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\n  \n 2023\n \n \n (7)\n \n \n
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\n \n\n \n \n \n \n \n \n Editorial: Innovative approaches to coral reef science by early career researchers.\n \n \n \n \n\n\n \n Paz-García, D. A.; Armstrong, E. J.; Popovic, I.; González-Pech, R. A.; and Hellberg, M. E.\n\n\n \n\n\n\n Frontiers in Marine Science, 10: 1322657. December 2023.\n \n\n\n\n
\n\n\n\n \n \n \"Editorial:Paper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{paz-garcia_editorial:_2023,\n\ttitle = {Editorial: {Innovative} approaches to coral reef science by early career researchers},\n\tvolume = {10},\n\tcopyright = {All rights reserved},\n\tissn = {2296-7745},\n\tshorttitle = {Editorial},\n\turl = {https://www.frontiersin.org/articles/10.3389/fmars.2023.1322657/full},\n\tdoi = {10.3389/fmars.2023.1322657},\n\turldate = {2024-01-09},\n\tjournal = {Frontiers in Marine Science},\n\tauthor = {Paz-García, David A. and Armstrong, Eric J. and Popovic, Iva and González-Pech, Raúl A. and Hellberg, Michael E.},\n\tmonth = dec,\n\tyear = {2023},\n\tpages = {1322657},\n}\n\n
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\n \n\n \n \n \n \n \n \n Disparate genetic divergence patterns in three corals across a pan-Pacific environmental gradient highlight species-specific adaptation.\n \n \n \n \n\n\n \n Voolstra, C. R.; Hume, B. C. C.; Armstrong, E. J.; Mitushasi, G.; Porro, B.; Oury, N.; Agostini, S.; Boissin, E.; Poulain, J.; Carradec, Q.; Paz-García, D. A.; Zoccola, D.; Magalon, H.; Moulin, C.; Bourdin, G.; Iwankow, G.; Romac, S.; Banaigs, B.; Boss, E.; Bowler, C.; De Vargas, C.; Douville, E.; Flores, M.; Furla, P.; Galand, P. E.; Gilson, E.; Lombard, F.; Pesant, S.; Reynaud, S.; Sullivan, M. B.; Sunagawa, S.; Thomas, O. P.; Troublé, R.; Thurber, R. V.; Wincker, P.; Planes, S.; Allemand, D.; and Forcioli, D.\n\n\n \n\n\n\n npj Biodiversity, 2(1): 15. July 2023.\n \n\n\n\n
\n\n\n\n \n \n \"DisparatePaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 4 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{voolstra_disparate_2023,\n\ttitle = {Disparate genetic divergence patterns in three corals across a pan-{Pacific} environmental gradient highlight species-specific adaptation},\n\tvolume = {2},\n\tcopyright = {All rights reserved},\n\tissn = {2731-4243},\n\turl = {https://www.nature.com/articles/s44185-023-00020-8},\n\tdoi = {10.1038/s44185-023-00020-8},\n\tabstract = {Abstract\n            \n              Tropical coral reefs are among the most affected ecosystems by climate change and face increasing loss in the coming decades. Effective conservation strategies that maximize ecosystem resilience must be informed by the accurate characterization of extant genetic diversity and population structure together with an understanding of the adaptive potential of keystone species. Here we analyzed samples from the Tara Pacific Expedition (2016–2018) that completed an 18,000 km longitudinal transect of the Pacific Ocean sampling three widespread corals—\n              Pocillopora meandrina\n              ,\n              Porites lobata\n              , and\n              Millepora\n              cf.\n              platyphylla\n              —across 33 sites from 11 islands. Using deep metagenomic sequencing of 269 colonies in conjunction with morphological analyses and climate variability data, we can show that despite a targeted sampling the transect encompasses multiple cryptic species. These species exhibit disparate biogeographic patterns and, most importantly, distinct evolutionary patterns in identical environmental regimes. Our findings demonstrate on a basin scale that evolutionary trajectories are species-specific and can only in part be predicted from the environment. This highlights that conservation strategies must integrate multi-species investigations to discern the distinct genomic footprints shaped by selection as well as the genetic potential for adaptive change.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {npj Biodiversity},\n\tauthor = {Voolstra, Christian R. and Hume, Benjamin C. C. and Armstrong, Eric J. and Mitushasi, Guinther and Porro, Barbara and Oury, Nicolas and Agostini, Sylvain and Boissin, Emilie and Poulain, Julie and Carradec, Quentin and Paz-García, David A. and Zoccola, Didier and Magalon, Hélène and Moulin, Clémentine and Bourdin, Guillaume and Iwankow, Guillaume and Romac, Sarah and Banaigs, Bernard and Boss, Emmanuel and Bowler, Chris and De Vargas, Colomban and Douville, Eric and Flores, Michel and Furla, Paola and Galand, Pierre E. and Gilson, Eric and Lombard, Fabien and Pesant, Stéphane and Reynaud, Stéphanie and Sullivan, Matthew B. and Sunagawa, Shinichi and Thomas, Olivier P. and Troublé, Romain and Thurber, Rebecca Vega and Wincker, Patrick and Planes, Serge and Allemand, Denis and Forcioli, Didier},\n\tmonth = jul,\n\tyear = {2023},\n\tpages = {15},\n}\n\n
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\n Abstract Tropical coral reefs are among the most affected ecosystems by climate change and face increasing loss in the coming decades. Effective conservation strategies that maximize ecosystem resilience must be informed by the accurate characterization of extant genetic diversity and population structure together with an understanding of the adaptive potential of keystone species. Here we analyzed samples from the Tara Pacific Expedition (2016–2018) that completed an 18,000 km longitudinal transect of the Pacific Ocean sampling three widespread corals— Pocillopora meandrina , Porites lobata , and Millepora cf. platyphylla —across 33 sites from 11 islands. Using deep metagenomic sequencing of 269 colonies in conjunction with morphological analyses and climate variability data, we can show that despite a targeted sampling the transect encompasses multiple cryptic species. These species exhibit disparate biogeographic patterns and, most importantly, distinct evolutionary patterns in identical environmental regimes. Our findings demonstrate on a basin scale that evolutionary trajectories are species-specific and can only in part be predicted from the environment. This highlights that conservation strategies must integrate multi-species investigations to discern the distinct genomic footprints shaped by selection as well as the genetic potential for adaptive change.\n
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\n \n\n \n \n \n \n \n \n Host transcriptomic plasticity and photosymbiotic fidelity underpin Pocillopora acclimatization across thermal regimes in the Pacific Ocean.\n \n \n \n \n\n\n \n Armstrong, E. J.; Lê-Hoang, J.; Carradec, Q.; Aury, J.; Noel, B.; Hume, B. C. C.; Voolstra, C. R.; Poulain, J.; Belser, C.; Paz-García, D. A.; Cruaud, C.; Labadie, K.; Da Silva, C.; Moulin, C.; Boissin, E.; Bourdin, G.; Iwankow, G.; Romac, S.; Agostini, S.; Banaigs, B.; Boss, E.; Bowler, C.; De Vargas, C.; Douville, E.; Flores, M.; Forcioli, D.; Furla, P.; Galand, P. E.; Gilson, E.; Lombard, F.; Pesant, S.; Reynaud, S.; Sullivan, M. B.; Sunagawa, S.; Thomas, O. P.; Troublé, R.; Thurber, R. V.; Zoccola, D.; Planes, S.; Allemand, D.; and Wincker, P.\n\n\n \n\n\n\n Nature Communications, 14(1): 3056. June 2023.\n \n\n\n\n
\n\n\n\n \n \n \"HostPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@article{armstrong_host_2023,\n\ttitle = {Host transcriptomic plasticity and photosymbiotic fidelity underpin \\textit{{Pocillopora}} acclimatization across thermal regimes in the {Pacific} {Ocean}},\n\tvolume = {14},\n\tcopyright = {All rights reserved},\n\tissn = {2041-1723},\n\turl = {https://www.nature.com/articles/s41467-023-38610-6},\n\tdoi = {10.1038/s41467-023-38610-6},\n\tabstract = {Abstract\n            \n              Heat waves are causing declines in coral reefs globally. Coral thermal responses depend on multiple, interacting drivers, such as past thermal exposure, endosymbiont community composition, and host genotype. This makes the understanding of their relative roles in adaptive and/or plastic responses crucial for anticipating impacts of future warming. Here, we extracted DNA and RNA from 102\n              Pocillopora\n              colonies collected from 32 sites on 11 islands across the Pacific Ocean to characterize host-photosymbiont fidelity and to investigate patterns of gene expression across a historical thermal gradient. We report high host-photosymbiont fidelity and show that coral and microalgal gene expression respond to different drivers. Differences in photosymbiotic association had only weak impacts on host gene expression, which was more strongly correlated with the historical thermal environment, whereas, photosymbiont gene expression was largely determined by microalgal lineage. Overall, our results reveal a three-tiered strategy of thermal acclimatization in\n              Pocillopora\n              underpinned by host-photosymbiont specificity, host transcriptomic plasticity, and differential photosymbiotic association under extreme warming.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Nature Communications},\n\tauthor = {Armstrong, Eric J. and Lê-Hoang, Julie and Carradec, Quentin and Aury, Jean-Marc and Noel, Benjamin and Hume, Benjamin C. C. and Voolstra, Christian R. and Poulain, Julie and Belser, Caroline and Paz-García, David A. and Cruaud, Corinne and Labadie, Karine and Da Silva, Corinne and Moulin, Clémentine and Boissin, Emilie and Bourdin, Guillaume and Iwankow, Guillaume and Romac, Sarah and Agostini, Sylvain and Banaigs, Bernard and Boss, Emmanuel and Bowler, Chris and De Vargas, Colomban and Douville, Eric and Flores, Michel and Forcioli, Didier and Furla, Paola and Galand, Pierre E. and Gilson, Eric and Lombard, Fabien and Pesant, Stéphane and Reynaud, Stéphanie and Sullivan, Matthew B. and Sunagawa, Shinichi and Thomas, Olivier P. and Troublé, Romain and Thurber, Rebecca Vega and Zoccola, Didier and Planes, Serge and Allemand, Denis and Wincker, Patrick},\n\tmonth = jun,\n\tyear = {2023},\n\tpages = {3056},\n}\n\n
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\n Abstract Heat waves are causing declines in coral reefs globally. Coral thermal responses depend on multiple, interacting drivers, such as past thermal exposure, endosymbiont community composition, and host genotype. This makes the understanding of their relative roles in adaptive and/or plastic responses crucial for anticipating impacts of future warming. Here, we extracted DNA and RNA from 102 Pocillopora colonies collected from 32 sites on 11 islands across the Pacific Ocean to characterize host-photosymbiont fidelity and to investigate patterns of gene expression across a historical thermal gradient. We report high host-photosymbiont fidelity and show that coral and microalgal gene expression respond to different drivers. Differences in photosymbiotic association had only weak impacts on host gene expression, which was more strongly correlated with the historical thermal environment, whereas, photosymbiont gene expression was largely determined by microalgal lineage. Overall, our results reveal a three-tiered strategy of thermal acclimatization in Pocillopora underpinned by host-photosymbiont specificity, host transcriptomic plasticity, and differential photosymbiotic association under extreme warming.\n
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\n \n\n \n \n \n \n \n \n Telomere DNA length regulation is influenced by seasonal temperature differences in short-lived but not in long-lived reef-building corals.\n \n \n \n \n\n\n \n Rouan, A.; Pousse, M.; Djerbi, N.; Porro, B.; Bourdin, G.; Carradec, Q.; Hume, B. C.; Poulain, J.; Lê-Hoang, J.; Armstrong, E.; Agostini, S.; Salazar, G.; Ruscheweyh, H.; Aury, J.; Paz-García, D. A.; McMinds, R.; Giraud-Panis, M.; Deshuraud, R.; Ottaviani, A.; Morini, L. D.; Leone, C.; Wurzer, L.; Tran, J.; Zoccola, D.; Pey, A.; Moulin, C.; Boissin, E.; Iwankow, G.; Romac, S.; De Vargas, C.; Banaigs, B.; Boss, E.; Bowler, C.; Douville, E.; Flores, M.; Reynaud, S.; Thomas, O. P.; Troublé, R.; Thurber, R. V.; Planes, S.; Allemand, D.; Pesant, S.; Galand, P. E.; Wincker, P.; Sunagawa, S.; Röttinger, E.; Furla, P.; Voolstra, C. R.; Forcioli, D.; Lombard, F.; and Gilson, E.\n\n\n \n\n\n\n Nature Communications, 14(1): 3038. June 2023.\n \n\n\n\n
\n\n\n\n \n \n \"TelomerePaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 5 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{rouan_telomere_2023,\n\ttitle = {Telomere {DNA} length regulation is influenced by seasonal temperature differences in short-lived but not in long-lived reef-building corals},\n\tvolume = {14},\n\tcopyright = {All rights reserved},\n\tissn = {2041-1723},\n\turl = {https://www.nature.com/articles/s41467-023-38499-1},\n\tdoi = {10.1038/s41467-023-38499-1},\n\tabstract = {Abstract\n            \n              Telomeres are environment-sensitive regulators of health and aging. Here,we present telomere DNA length analysis of two reef-building coral genera revealing that the long- and short-term water thermal regime is a key driver of between-colony variation across the Pacific Ocean. Notably, there are differences between the two studied genera. The telomere DNA lengths of the short-lived, more stress-sensitive\n              Pocillopora\n              spp. colonies were largely determined by seasonal temperature variation, whereas those of the long-lived, more stress-resistant\n              Porites\n              spp. colonies were insensitive to seasonal patterns, but rather influenced by past thermal anomalies. These results reveal marked differences in telomere DNA length regulation between two evolutionary distant coral genera exhibiting specific life-history traits. We propose that environmentally regulated mechanisms of telomere maintenance are linked to organismal performances, a matter of paramount importance considering the effects of climate change on health.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Nature Communications},\n\tauthor = {Rouan, Alice and Pousse, Melanie and Djerbi, Nadir and Porro, Barbara and Bourdin, Guillaume and Carradec, Quentin and Hume, Benjamin Cc. and Poulain, Julie and Lê-Hoang, Julie and Armstrong, Eric and Agostini, Sylvain and Salazar, Guillem and Ruscheweyh, Hans-Joachim and Aury, Jean-Marc and Paz-García, David A. and McMinds, Ryan and Giraud-Panis, Marie-Josèphe and Deshuraud, Romane and Ottaviani, Alexandre and Morini, Lycia Die and Leone, Camille and Wurzer, Lia and Tran, Jessica and Zoccola, Didier and Pey, Alexis and Moulin, Clémentine and Boissin, Emilie and Iwankow, Guillaume and Romac, Sarah and De Vargas, Colomban and Banaigs, Bernard and Boss, Emmanuel and Bowler, Chris and Douville, Eric and Flores, Michel and Reynaud, Stéphanie and Thomas, Olivier P. and Troublé, Romain and Thurber, Rebecca Vega and Planes, Serge and Allemand, Denis and Pesant, Stephane and Galand, Pierre E. and Wincker, Patrick and Sunagawa, Shinichi and Röttinger, Eric and Furla, Paola and Voolstra, Christian R. and Forcioli, Didier and Lombard, Fabien and Gilson, Eric},\n\tmonth = jun,\n\tyear = {2023},\n\tpages = {3038},\n}\n\n
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\n Abstract Telomeres are environment-sensitive regulators of health and aging. Here,we present telomere DNA length analysis of two reef-building coral genera revealing that the long- and short-term water thermal regime is a key driver of between-colony variation across the Pacific Ocean. Notably, there are differences between the two studied genera. The telomere DNA lengths of the short-lived, more stress-sensitive Pocillopora spp. colonies were largely determined by seasonal temperature variation, whereas those of the long-lived, more stress-resistant Porites spp. colonies were insensitive to seasonal patterns, but rather influenced by past thermal anomalies. These results reveal marked differences in telomere DNA length regulation between two evolutionary distant coral genera exhibiting specific life-history traits. We propose that environmentally regulated mechanisms of telomere maintenance are linked to organismal performances, a matter of paramount importance considering the effects of climate change on health.\n
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\n \n\n \n \n \n \n \n \n Ecology of Endozoicomonadaceae in three coral genera across the Pacific Ocean.\n \n \n \n \n\n\n \n Hochart, C.; Paoli, L.; Ruscheweyh, H.; Salazar, G.; Boissin, E.; Romac, S.; Poulain, J.; Bourdin, G.; Iwankow, G.; Moulin, C.; Ziegler, M.; Porro, B.; Armstrong, E. J.; Hume, B. C. C.; Aury, J.; Pogoreutz, C.; Paz-García, D. A.; Nugues, M. M.; Agostini, S.; Banaigs, B.; Boss, E.; Bowler, C.; De Vargas, C.; Douville, E.; Flores, M.; Forcioli, D.; Furla, P.; Gilson, E.; Lombard, F.; Pesant, S.; Reynaud, S.; Thomas, O. P.; Troublé, R.; Wincker, P.; Zoccola, D.; Allemand, D.; Planes, S.; Thurber, R. V.; Voolstra, C. R.; Sunagawa, S.; and Galand, P. E.\n\n\n \n\n\n\n Nature Communications, 14(1): 3037. June 2023.\n \n\n\n\n
\n\n\n\n \n \n \"EcologyPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{hochart_ecology_2023,\n\ttitle = {Ecology of \\textit{{Endozoicomonadaceae}} in three coral genera across the {Pacific} {Ocean}},\n\tvolume = {14},\n\tcopyright = {All rights reserved},\n\tissn = {2041-1723},\n\turl = {https://www.nature.com/articles/s41467-023-38502-9},\n\tdoi = {10.1038/s41467-023-38502-9},\n\tabstract = {Abstract\n            \n              Health and resilience of the coral holobiont depend on diverse bacterial communities often dominated by key marine symbionts of the\n              Endozoicomonadaceae\n              family. The factors controlling their distribution and their functional diversity remain, however, poorly known. Here, we study the ecology of\n              Endozoicomonadaceae\n              at an ocean basin-scale by sampling specimens from three coral genera (\n              Pocillopora\n              ,\n              Porites\n              ,\n              Millepora\n              ) on 99 reefs from 32 islands across the Pacific Ocean. The analysis of 2447 metabarcoding and 270 metagenomic samples reveals that each coral genus harbored a distinct new species of\n              Endozoicomonadaceae\n              . These species are composed of nine lineages that have distinct biogeographic patterns. The most common one, found in\n              Pocillopora\n              , appears to be a globally distributed symbiont with distinct metabolic capabilities, including the synthesis of amino acids and vitamins not produced by the host. The other lineages are structured partly by the host genetic lineage in\n              Pocillopora\n              and mainly by the geographic location in\n              Porites\n              .\n              Millepora\n              is more rarely associated to\n              Endozoicomonadaceae\n              . Our results show that different coral genera exhibit distinct strategies of host-\n              Endozoicomonadaceae\n              associations that are defined at the bacteria lineage level.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Nature Communications},\n\tauthor = {Hochart, Corentin and Paoli, Lucas and Ruscheweyh, Hans-Joachim and Salazar, Guillem and Boissin, Emilie and Romac, Sarah and Poulain, Julie and Bourdin, Guillaume and Iwankow, Guillaume and Moulin, Clémentine and Ziegler, Maren and Porro, Barbara and Armstrong, Eric J. and Hume, Benjamin C. C. and Aury, Jean-Marc and Pogoreutz, Claudia and Paz-García, David A. and Nugues, Maggy M. and Agostini, Sylvain and Banaigs, Bernard and Boss, Emmanuel and Bowler, Chris and De Vargas, Colomban and Douville, Eric and Flores, Michel and Forcioli, Didier and Furla, Paola and Gilson, Eric and Lombard, Fabien and Pesant, Stéphane and Reynaud, Stéphanie and Thomas, Olivier P. and Troublé, Romain and Wincker, Patrick and Zoccola, Didier and Allemand, Denis and Planes, Serge and Thurber, Rebecca Vega and Voolstra, Christian R. and Sunagawa, Shinichi and Galand, Pierre E.},\n\tmonth = jun,\n\tyear = {2023},\n\tpages = {3037},\n}\n\n
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\n Abstract Health and resilience of the coral holobiont depend on diverse bacterial communities often dominated by key marine symbionts of the Endozoicomonadaceae family. The factors controlling their distribution and their functional diversity remain, however, poorly known. Here, we study the ecology of Endozoicomonadaceae at an ocean basin-scale by sampling specimens from three coral genera ( Pocillopora , Porites , Millepora ) on 99 reefs from 32 islands across the Pacific Ocean. The analysis of 2447 metabarcoding and 270 metagenomic samples reveals that each coral genus harbored a distinct new species of Endozoicomonadaceae . These species are composed of nine lineages that have distinct biogeographic patterns. The most common one, found in Pocillopora , appears to be a globally distributed symbiont with distinct metabolic capabilities, including the synthesis of amino acids and vitamins not produced by the host. The other lineages are structured partly by the host genetic lineage in Pocillopora and mainly by the geographic location in Porites . Millepora is more rarely associated to Endozoicomonadaceae . Our results show that different coral genera exhibit distinct strategies of host- Endozoicomonadaceae associations that are defined at the bacteria lineage level.\n
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\n \n\n \n \n \n \n \n \n Diversity of the Pacific Ocean coral reef microbiome.\n \n \n \n \n\n\n \n Galand, P. E.; Ruscheweyh, H.; Salazar, G.; Hochart, C.; Henry, N.; Hume, B. C. C.; Oliveira, P. H.; Perdereau, A.; Labadie, K.; Belser, C.; Boissin, E.; Romac, S.; Poulain, J.; Bourdin, G.; Iwankow, G.; Moulin, C.; Armstrong, E. J.; Paz-García, D. A.; Ziegler, M.; Agostini, S.; Banaigs, B.; Boss, E.; Bowler, C.; De Vargas, C.; Douville, E.; Flores, M.; Forcioli, D.; Furla, P.; Gilson, E.; Lombard, F.; Pesant, S.; Reynaud, S.; Thomas, O. P.; Troublé, R.; Zoccola, D.; Voolstra, C. R.; Thurber, R. V.; Sunagawa, S.; Wincker, P.; Allemand, D.; and Planes, S.\n\n\n \n\n\n\n Nature Communications, 14(1): 3039. June 2023.\n \n\n\n\n
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@article{galand_diversity_2023,\n\ttitle = {Diversity of the {Pacific} {Ocean} coral reef microbiome},\n\tvolume = {14},\n\tcopyright = {All rights reserved},\n\tissn = {2041-1723},\n\turl = {https://www.nature.com/articles/s41467-023-38500-x},\n\tdoi = {10.1038/s41467-023-38500-x},\n\tabstract = {Abstract\n            \n              Coral reefs are among the most diverse ecosystems on Earth. They support high biodiversity of multicellular organisms that strongly rely on associated microorganisms for health and nutrition. However, the extent of the coral reef microbiome diversity and its distribution at the oceanic basin-scale remains to be explored. Here, we systematically sampled 3 coral morphotypes, 2 fish species, and planktonic communities in 99 reefs from 32 islands across the Pacific Ocean, to assess reef microbiome composition and biogeography. We show a very large richness of reef microorganisms compared to other environments, which extrapolated to all fishes and corals of the Pacific, approximates the current estimated total prokaryotic diversity for the entire Earth. Microbial communities vary among and within the 3 animal biomes (coral, fish, plankton), and geographically. For corals, the cross-ocean patterns of diversity are different from those known for other multicellular organisms. Within each coral morphotype, community composition is always determined by geographic distance first, both at the island and across ocean scale, and then by environment. Our unprecedented sampling effort of coral reef microbiomes, as part of the\n              Tara\n              Pacific expedition, provides new insight into the global microbial diversity, the factors driving their distribution, and the biocomplexity of reef ecosystems.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Nature Communications},\n\tauthor = {Galand, Pierre E. and Ruscheweyh, Hans-Joachim and Salazar, Guillem and Hochart, Corentin and Henry, Nicolas and Hume, Benjamin C. C. and Oliveira, Pedro H. and Perdereau, Aude and Labadie, Karine and Belser, Caroline and Boissin, Emilie and Romac, Sarah and Poulain, Julie and Bourdin, Guillaume and Iwankow, Guillaume and Moulin, Clémentine and Armstrong, Eric J. and Paz-García, David A. and Ziegler, Maren and Agostini, Sylvain and Banaigs, Bernard and Boss, Emmanuel and Bowler, Chris and De Vargas, Colomban and Douville, Eric and Flores, Michel and Forcioli, Didier and Furla, Paola and Gilson, Eric and Lombard, Fabien and Pesant, Stéphane and Reynaud, Stéphanie and Thomas, Olivier P. and Troublé, Romain and Zoccola, Didier and Voolstra, Christian R. and Thurber, Rebecca Vega and Sunagawa, Shinichi and Wincker, Patrick and Allemand, Denis and Planes, Serge},\n\tmonth = jun,\n\tyear = {2023},\n\tpages = {3039},\n}\n\n
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\n Abstract Coral reefs are among the most diverse ecosystems on Earth. They support high biodiversity of multicellular organisms that strongly rely on associated microorganisms for health and nutrition. However, the extent of the coral reef microbiome diversity and its distribution at the oceanic basin-scale remains to be explored. Here, we systematically sampled 3 coral morphotypes, 2 fish species, and planktonic communities in 99 reefs from 32 islands across the Pacific Ocean, to assess reef microbiome composition and biogeography. We show a very large richness of reef microorganisms compared to other environments, which extrapolated to all fishes and corals of the Pacific, approximates the current estimated total prokaryotic diversity for the entire Earth. Microbial communities vary among and within the 3 animal biomes (coral, fish, plankton), and geographically. For corals, the cross-ocean patterns of diversity are different from those known for other multicellular organisms. Within each coral morphotype, community composition is always determined by geographic distance first, both at the island and across ocean scale, and then by environment. Our unprecedented sampling effort of coral reef microbiomes, as part of the Tara Pacific expedition, provides new insight into the global microbial diversity, the factors driving their distribution, and the biocomplexity of reef ecosystems.\n
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\n \n\n \n \n \n \n \n \n Pervasive tandem duplications and convergent evolution shape coral genomes.\n \n \n \n \n\n\n \n Noel, B.; Denoeud, F.; Rouan, A.; Buitrago-López, C.; Capasso, L.; Poulain, J.; Boissin, E.; Pousse, M.; Da Silva, C.; Couloux, A.; Armstrong, E.; Carradec, Q.; Cruaud, C.; Labadie, K.; Lê-Hoang, J.; Tambutté, S.; Barbe, V.; Moulin, C.; Bourdin, G.; Iwankow, G.; Romac, S.; Agostini, S.; Banaigs, B.; Boss, E.; Bowler, C.; De Vargas, C.; Douville, E.; Flores, J. M.; Forcioli, D.; Furla, P.; Galand, P. E.; Lombard, F.; Pesant, S.; Reynaud, S.; Sullivan, M. B.; Sunagawa, S.; Thomas, O. P.; Troublé, R.; Thurber, R. V.; Allemand, D.; Planes, S.; Gilson, E.; Zoccola, D.; Wincker, P.; Voolstra, C. R.; and Aury, J.\n\n\n \n\n\n\n Genome Biology, 24(1): 123. June 2023.\n \n\n\n\n
\n\n\n\n \n \n \"PervasivePaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{noel_pervasive_2023,\n\ttitle = {Pervasive tandem duplications and convergent evolution shape coral genomes},\n\tvolume = {24},\n\tcopyright = {All rights reserved},\n\tissn = {1474-760X},\n\turl = {https://genomebiology.biomedcentral.com/articles/10.1186/s13059-023-02960-7},\n\tdoi = {10.1186/s13059-023-02960-7},\n\tabstract = {Abstract\n            \n              Background\n              Over the last decade, several coral genomes have been sequenced allowing a better understanding of these symbiotic organisms threatened by climate change. Scleractinian corals are reef builders and are central to coral reef ecosystems, providing habitat to a great diversity of species.\n            \n            \n              Results\n              \n                In the frame of the Tara Pacific expedition, we assemble two coral genomes,\n                Porites lobata\n                and\n                Pocillopora\n                cf.\n                effusa,\n                with vastly improved contiguity that allows us to study the functional organization of these genomes. We annotate their gene catalog and report a relatively higher gene number than that found in other public coral genome sequences, 43,000 and 32,000 genes, respectively. This finding is explained by a high number of tandemly duplicated genes, accounting for almost a third of the predicted genes. We show that these duplicated genes originate from multiple and distinct duplication events throughout the coral lineage. They contribute to the amplification of gene families, mostly related to the immune system and disease resistance, which we suggest to be functionally linked to coral host resilience.\n              \n            \n            \n              Conclusions\n              At large, we show the importance of duplicated genes to inform the biology of reef-building corals and provide novel avenues to understand and screen for differences in stress resilience.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Genome Biology},\n\tauthor = {Noel, Benjamin and Denoeud, France and Rouan, Alice and Buitrago-López, Carol and Capasso, Laura and Poulain, Julie and Boissin, Emilie and Pousse, Mélanie and Da Silva, Corinne and Couloux, Arnaud and Armstrong, Eric and Carradec, Quentin and Cruaud, Corinne and Labadie, Karine and Lê-Hoang, Julie and Tambutté, Sylvie and Barbe, Valérie and Moulin, Clémentine and Bourdin, Guillaume and Iwankow, Guillaume and Romac, Sarah and Agostini, Sylvain and Banaigs, Bernard and Boss, Emmanuel and Bowler, Chris and De Vargas, Colomban and Douville, Eric and Flores, J. Michel and Forcioli, Didier and Furla, Paola and Galand, Pierre E. and Lombard, Fabien and Pesant, Stéphane and Reynaud, Stéphanie and Sullivan, Matthew B. and Sunagawa, Shinichi and Thomas, Olivier P. and Troublé, Romain and Thurber, Rebecca Vega and Allemand, Denis and Planes, Serge and Gilson, Eric and Zoccola, Didier and Wincker, Patrick and Voolstra, Christian R. and Aury, Jean-Marc},\n\tmonth = jun,\n\tyear = {2023},\n\tpages = {123},\n}\n\n
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\n Abstract Background Over the last decade, several coral genomes have been sequenced allowing a better understanding of these symbiotic organisms threatened by climate change. Scleractinian corals are reef builders and are central to coral reef ecosystems, providing habitat to a great diversity of species. Results In the frame of the Tara Pacific expedition, we assemble two coral genomes, Porites lobata and Pocillopora cf. effusa, with vastly improved contiguity that allows us to study the functional organization of these genomes. We annotate their gene catalog and report a relatively higher gene number than that found in other public coral genome sequences, 43,000 and 32,000 genes, respectively. This finding is explained by a high number of tandemly duplicated genes, accounting for almost a third of the predicted genes. We show that these duplicated genes originate from multiple and distinct duplication events throughout the coral lineage. They contribute to the amplification of gene families, mostly related to the immune system and disease resistance, which we suggest to be functionally linked to coral host resilience. Conclusions At large, we show the importance of duplicated genes to inform the biology of reef-building corals and provide novel avenues to understand and screen for differences in stress resilience.\n
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\n  \n 2022\n \n \n (1)\n \n \n
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\n \n\n \n \n \n \n \n \n Elevated temperature and carbon dioxide levels alter growth rates and shell composition in the fluted giant clam, Tridacna squamosa.\n \n \n \n \n\n\n \n Armstrong, E. J.; Watson, S.; Stillman, J. H.; and Calosi, P.\n\n\n \n\n\n\n Scientific Reports, 12(1): 11034. June 2022.\n \n\n\n\n
\n\n\n\n \n \n \"ElevatedPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 6 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{armstrong_elevated_2022,\n\ttitle = {Elevated temperature and carbon dioxide levels alter growth rates and shell composition in the fluted giant clam, \\textit{{Tridacna} squamosa}},\n\tvolume = {12},\n\tcopyright = {All rights reserved},\n\tissn = {2045-2322},\n\turl = {https://www.nature.com/articles/s41598-022-14503-4},\n\tdoi = {10.1038/s41598-022-14503-4},\n\tabstract = {Abstract\n            \n              Giant clams produce massive calcified shells with important biological (e.g., defensive) and ecological (e.g., habitat-forming) properties. Whereas elevated seawater temperature is known to alter giant clam shell structure, no study has examined the effects of a simultaneous increase in seawater temperature and partial pressure of carbon dioxide (\n              p\n              CO\n              2\n              ) on shell mineralogical composition in these species. We investigated the effects of 60-days exposure to end-of-the-century projections for seawater temperature (+ 3 °C) and\n              p\n              CO\n              2\n              (+ 500 µatm) on growth, mineralogy, and organic content of shells and scutes in juvenile\n              Tridacna squamosa\n              giant clams. Elevated temperature had no effect on growth rates or organic content, but did increase shell [\n              24\n              Mg]/[\n              40\n              Ca] as well as [\n              40\n              Ca] in newly-formed scutes. Elevated\n              p\n              CO\n              2\n              increased shell growth and whole animal mass gain. In addition, we report the first evidence of an effect of elevated\n              p\n              CO\n              2\n              on element/Ca ratios in giant clam shells, with significantly increased [\n              137\n              Ba]/[\n              40\n              Ca] in newly-formed shells. Simultaneous exposure to both drivers greatly increased inter-individual variation in mineral concentrations and resulted in reduced shell N-content which may signal the onset of physiological stress. Overall, our results indicate a greater influence of\n              p\n              CO\n              2\n              on shell mineralogy in giant clams than previously recognized.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Scientific Reports},\n\tauthor = {Armstrong, Eric J. and Watson, Sue-Ann and Stillman, Jonathon H. and Calosi, Piero},\n\tmonth = jun,\n\tyear = {2022},\n\tpages = {11034},\n}\n\n
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\n Abstract Giant clams produce massive calcified shells with important biological (e.g., defensive) and ecological (e.g., habitat-forming) properties. Whereas elevated seawater temperature is known to alter giant clam shell structure, no study has examined the effects of a simultaneous increase in seawater temperature and partial pressure of carbon dioxide ( p CO 2 ) on shell mineralogical composition in these species. We investigated the effects of 60-days exposure to end-of-the-century projections for seawater temperature (+ 3 °C) and p CO 2 (+ 500 µatm) on growth, mineralogy, and organic content of shells and scutes in juvenile Tridacna squamosa giant clams. Elevated temperature had no effect on growth rates or organic content, but did increase shell [ 24 Mg]/[ 40 Ca] as well as [ 40 Ca] in newly-formed scutes. Elevated p CO 2 increased shell growth and whole animal mass gain. In addition, we report the first evidence of an effect of elevated p CO 2 on element/Ca ratios in giant clam shells, with significantly increased [ 137 Ba]/[ 40 Ca] in newly-formed shells. Simultaneous exposure to both drivers greatly increased inter-individual variation in mineral concentrations and resulted in reduced shell N-content which may signal the onset of physiological stress. Overall, our results indicate a greater influence of p CO 2 on shell mineralogy in giant clams than previously recognized.\n
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\n  \n 2021\n \n \n (1)\n \n \n
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\n \n\n \n \n \n \n \n \n Kelp Morphology and Herbivory Are Maintained Across Latitude Despite Geographic Shift in Kelp-Wounding Herbivores.\n \n \n \n \n\n\n \n Burnett, N. P.; Armstrong, E. J.; Romero, R.; Runzel, C. C.; and Tanner, R. L.\n\n\n \n\n\n\n The Biological Bulletin, 241(2): 168–184. October 2021.\n \n\n\n\n
\n\n\n\n \n \n \"KelpPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n  \n \n 3 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{burnett_kelp_2021,\n\ttitle = {Kelp {Morphology} and {Herbivory} {Are} {Maintained} {Across} {Latitude} {Despite} {Geographic} {Shift} in {Kelp}-{Wounding} {Herbivores}},\n\tvolume = {241},\n\tcopyright = {All rights reserved},\n\tissn = {0006-3185, 1939-8697},\n\turl = {https://www.journals.uchicago.edu/doi/10.1086/715039},\n\tdoi = {10.1086/715039},\n\tlanguage = {en},\n\tnumber = {2},\n\turldate = {2024-01-09},\n\tjournal = {The Biological Bulletin},\n\tauthor = {Burnett, Nicholas P. and Armstrong, Eric J. and Romero, Rosemary and Runzel, Charlotte C. and Tanner, Richelle L.},\n\tmonth = oct,\n\tyear = {2021},\n\tpages = {168--184},\n}\n\n
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\n  \n 2020\n \n \n (1)\n \n \n
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\n \n\n \n \n \n \n \n \n Elevated temperature, but not acidification, reduces fertilization success in the small giant clam, Tridacna maxima.\n \n \n \n \n\n\n \n Armstrong, E. J.; Dubousquet, V.; Mills, S. C.; and Stillman, J. H.\n\n\n \n\n\n\n Marine Biology, 167(1): 8. January 2020.\n \n\n\n\n
\n\n\n\n \n \n \"ElevatedPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n  \n \n 4 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{armstrong_elevated_2020,\n\ttitle = {Elevated temperature, but not acidification, reduces fertilization success in the small giant clam, \\textit{{Tridacna} maxima}},\n\tvolume = {167},\n\tcopyright = {All rights reserved},\n\tissn = {0025-3162, 1432-1793},\n\turl = {http://link.springer.com/10.1007/s00227-019-3615-0},\n\tdoi = {10.1007/s00227-019-3615-0},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Marine Biology},\n\tauthor = {Armstrong, Eric J. and Dubousquet, Vaimiti and Mills, Suzanne C. and Stillman, Jonathon H.},\n\tmonth = jan,\n\tyear = {2020},\n\tpages = {8},\n}\n\n
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\n  \n 2019\n \n \n (2)\n \n \n
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\n \n\n \n \n \n \n \n \n Plasticity of foot muscle and cardiac thermal limits in the limpet Lottia limatula from locations with differing temperatures.\n \n \n \n \n\n\n \n Wang, T; Tanner, R.; Armstrong, E.; Lindberg, D.; and Stillman, J.\n\n\n \n\n\n\n Aquatic Biology, 28: 113–125. September 2019.\n \n\n\n\n
\n\n\n\n \n \n \"PlasticityPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{wang_plasticity_2019,\n\ttitle = {Plasticity of foot muscle and cardiac thermal limits in the limpet \\textit{{Lottia} limatula} from locations with differing temperatures},\n\tvolume = {28},\n\tcopyright = {All rights reserved},\n\tissn = {1864-7782, 1864-7790},\n\turl = {https://www.int-res.com/abstracts/ab/v28/p113-125/},\n\tdoi = {10.3354/ab00714},\n\tlanguage = {en},\n\turldate = {2024-01-09},\n\tjournal = {Aquatic Biology},\n\tauthor = {Wang, T and Tanner, Rl and Armstrong, Ej and Lindberg, Dr and Stillman, Jh},\n\tmonth = sep,\n\tyear = {2019},\n\tpages = {113--125},\n}\n\n
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\n \n\n \n \n \n \n \n \n High Heat Tolerance Is Negatively Correlated with Heat Tolerance Plasticity in Nudibranch Mollusks.\n \n \n \n \n\n\n \n Armstrong, E. J.; Tanner, R. L.; and Stillman, J. H.\n\n\n \n\n\n\n Physiological and Biochemical Zoology, 92(4): 430–444. July 2019.\n \n\n\n\n
\n\n\n\n \n \n \"HighPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n  \n \n 5 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{armstrong_high_2019,\n\ttitle = {High {Heat} {Tolerance} {Is} {Negatively} {Correlated} with {Heat} {Tolerance} {Plasticity} in {Nudibranch} {Mollusks}},\n\tvolume = {92},\n\tcopyright = {All rights reserved},\n\tissn = {1522-2152, 1537-5293},\n\turl = {https://www.journals.uchicago.edu/doi/10.1086/704519},\n\tdoi = {10.1086/704519},\n\tlanguage = {en},\n\tnumber = {4},\n\turldate = {2024-01-09},\n\tjournal = {Physiological and Biochemical Zoology},\n\tauthor = {Armstrong, Eric J. and Tanner, Richelle L. and Stillman, Jonathon H.},\n\tmonth = jul,\n\tyear = {2019},\n\tpages = {430--444},\n}\n\n
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\n  \n 2018\n \n \n (2)\n \n \n
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\n \n\n \n \n \n \n \n \n Acid secretion by the boring organ of the burrowing giant clam, Tridacna crocea.\n \n \n \n \n\n\n \n Hill, R. W.; Armstrong, E. J.; Inaba, K.; Morita, M.; Tresguerres, M.; Stillman, J. H.; Roa, J. N.; and Kwan, G. T.\n\n\n \n\n\n\n Biology Letters, 14(6): 20180047. June 2018.\n \n\n\n\n
\n\n\n\n \n \n \"AcidPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 4 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{hill_acid_2018,\n\ttitle = {Acid secretion by the boring organ of the burrowing giant clam, \\textit{{Tridacna} crocea}},\n\tvolume = {14},\n\tcopyright = {All rights reserved},\n\tissn = {1744-9561, 1744-957X},\n\turl = {https://royalsocietypublishing.org/doi/10.1098/rsbl.2018.0047},\n\tdoi = {10.1098/rsbl.2018.0047},\n\tabstract = {The giant clam\n              Tridacna crocea\n              , native to Indo-Pacific coral reefs, is noted for its unique ability to bore fully into coral rock and is a major agent of reef bioerosion. However,\n              T. crocea\n              's mechanism of boring has remained a mystery despite decades of research. By exploiting a new, two-dimensional pH-sensing technology and manipulating clams to press their presumptive boring tissue (the pedal mantle) against pH-sensing foils, we show that this tissue lowers the pH of surfaces it contacts by greater than or equal to 2 pH units below seawater pH day and night. Acid secretion is likely mediated by vacuolar-type H\n              +\n              -ATPase, which we demonstrate (by immunofluorescence) is abundant in the pedal mantle outer epithelium. Our discovery of acid secretion solves this decades-old mystery and reveals that, during bioerosion,\n              T. crocea\n              can liberate reef constituents directly to the soluble phase, rather than producing sediment alone as earlier assumed.},\n\tlanguage = {en},\n\tnumber = {6},\n\turldate = {2024-01-09},\n\tjournal = {Biology Letters},\n\tauthor = {Hill, Richard W. and Armstrong, Eric J. and Inaba, Kazuo and Morita, Masaya and Tresguerres, Martin and Stillman, Jonathon H. and Roa, Jinae N. and Kwan, Garfield T.},\n\tmonth = jun,\n\tyear = {2018},\n\tpages = {20180047},\n}\n\n
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\n The giant clam Tridacna crocea , native to Indo-Pacific coral reefs, is noted for its unique ability to bore fully into coral rock and is a major agent of reef bioerosion. However, T. crocea 's mechanism of boring has remained a mystery despite decades of research. By exploiting a new, two-dimensional pH-sensing technology and manipulating clams to press their presumptive boring tissue (the pedal mantle) against pH-sensing foils, we show that this tissue lowers the pH of surfaces it contacts by greater than or equal to 2 pH units below seawater pH day and night. Acid secretion is likely mediated by vacuolar-type H + -ATPase, which we demonstrate (by immunofluorescence) is abundant in the pedal mantle outer epithelium. Our discovery of acid secretion solves this decades-old mystery and reveals that, during bioerosion, T. crocea can liberate reef constituents directly to the soluble phase, rather than producing sediment alone as earlier assumed.\n
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\n \n\n \n \n \n \n \n \n Symbiont photosynthesis in giant clams is promoted by V-type H$^{\\textrm{+}}$-ATPase from host cells.\n \n \n \n \n\n\n \n Armstrong, E. J.; Roa, J. N.; Stillman, J. H.; and Tresguerres, M.\n\n\n \n\n\n\n Journal of Experimental Biology,jeb.177220. January 2018.\n \n\n\n\n
\n\n\n\n \n \n \"SymbiontPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{armstrong_symbiont_2018,\n\ttitle = {Symbiont photosynthesis in giant clams is promoted by {V}-type {H}$^{\\textrm{+}}$-{ATPase} from host cells},\n\tcopyright = {All rights reserved},\n\tissn = {1477-9145, 0022-0949},\n\turl = {https://journals.biologists.com/jeb/article/doi/10.1242/jeb.177220/262930/Symbiont-photosynthesis-in-giant-clams-is-promoted},\n\tdoi = {10.1242/jeb.177220},\n\tabstract = {Giant clams (genus Tridacna) are the largest living bivalves and, like reef-building corals, host symbiotic dinoflagellate algae (Symbiodinium) that significantly contribute to their energy budget. In turn, Symbiodinium rely on the host to supply inorganic carbon (Ci) for photosynthesis. In corals, host “proton pump” vacuolar-type H+-ATPase (VHA) is part of a carbon concentrating mechanism (CCM) that promotes Symbiodinium photosynthesis. Here, we report that VHA in the small giant clam (Tridacna maxima) similarly promotes Symbiodinium photosynthesis. VHA was abundantly expressed in the apical membrane of epithelial cells of T. maxima’s siphonal mantle tubule system which harbors Symbiodinium. Furthermore, application of the highly specific pharmacological VHA inhibitors bafilomycin A1 and concanamycin A significantly reduced photosynthetic O2 production by ∼40\\%. Together with our observation that exposure to light increased holobiont aerobic metabolism ∼five-fold, and earlier estimates that translocated fixed carbon exceeds metabolic demand, we conclude that VHA activity in the siphonal mantle confers strong energetic benefits to the host clam through increased supply of Ci to algal symbionts and subsequent photosynthetic activity. The convergent role of VHA in promoting Symbiodinium photosynthesis in the giant clam siphonal mantle tubule system and coral symbiosome suggests VHA-driven CCM is a common exaptation in marine photosymbioses that deserves further investigation in other taxa.},\n\tlanguage = {en},\n\turldate = {2024-01-09},\n\tjournal = {Journal of Experimental Biology},\n\tauthor = {Armstrong, Eric J. and Roa, Jinae N. and Stillman, Jonathon H. and Tresguerres, Martin},\n\tmonth = jan,\n\tyear = {2018},\n\tpages = {jeb.177220},\n}\n\n
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\n Giant clams (genus Tridacna) are the largest living bivalves and, like reef-building corals, host symbiotic dinoflagellate algae (Symbiodinium) that significantly contribute to their energy budget. In turn, Symbiodinium rely on the host to supply inorganic carbon (Ci) for photosynthesis. In corals, host “proton pump” vacuolar-type H+-ATPase (VHA) is part of a carbon concentrating mechanism (CCM) that promotes Symbiodinium photosynthesis. Here, we report that VHA in the small giant clam (Tridacna maxima) similarly promotes Symbiodinium photosynthesis. VHA was abundantly expressed in the apical membrane of epithelial cells of T. maxima’s siphonal mantle tubule system which harbors Symbiodinium. Furthermore, application of the highly specific pharmacological VHA inhibitors bafilomycin A1 and concanamycin A significantly reduced photosynthetic O2 production by ∼40%. Together with our observation that exposure to light increased holobiont aerobic metabolism ∼five-fold, and earlier estimates that translocated fixed carbon exceeds metabolic demand, we conclude that VHA activity in the siphonal mantle confers strong energetic benefits to the host clam through increased supply of Ci to algal symbionts and subsequent photosynthetic activity. The convergent role of VHA in promoting Symbiodinium photosynthesis in the giant clam siphonal mantle tubule system and coral symbiosome suggests VHA-driven CCM is a common exaptation in marine photosymbioses that deserves further investigation in other taxa.\n
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\n  \n 2017\n \n \n (2)\n \n \n
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\n \n\n \n \n \n \n \n \n Abundant betaines in giant clams (Tridacnidae) and western Pacific reef corals, including study of coral betaine acclimatization.\n \n \n \n \n\n\n \n Hill, R.; Armstrong, E.; Florn, A.; Li, C; Walquist, R.; and Edward, A\n\n\n \n\n\n\n Marine Ecology Progress Series, 576: 27–41. August 2017.\n \n\n\n\n
\n\n\n\n \n \n \"AbundantPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n  \n \n 5 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{hill_abundant_2017,\n\ttitle = {Abundant betaines in giant clams ({Tridacnidae}) and western {Pacific} reef corals, including study of coral betaine acclimatization},\n\tvolume = {576},\n\tcopyright = {All rights reserved},\n\tissn = {0171-8630, 1616-1599},\n\turl = {http://www.int-res.com/abstracts/meps/v576/p27-41/},\n\tdoi = {10.3354/meps12181},\n\tlanguage = {en},\n\turldate = {2024-01-09},\n\tjournal = {Marine Ecology Progress Series},\n\tauthor = {Hill, Rw and Armstrong, Ej and Florn, Am and Li, C and Walquist, Rw and Edward, A},\n\tmonth = aug,\n\tyear = {2017},\n\tpages = {27--41},\n}\n\n
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\n \n\n \n \n \n \n \n \n High pCO$_{\\textrm{2}}$ and elevated temperature reduce survival and alter development in early life stages of the tropical sea hare Stylocheilus striatus.\n \n \n \n \n\n\n \n Armstrong, E. J.; Allen, T. R.; Beltrand, M.; Dubousquet, V.; Stillman, J. H.; and Mills, S. C.\n\n\n \n\n\n\n Marine Biology, 164(5): 107. May 2017.\n \n\n\n\n
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@article{armstrong_high_2017,\n\ttitle = {High \\textit{p}{CO}$_{\\textrm{2}}$ and elevated temperature reduce survival and alter development in early life stages of the tropical sea hare \\textit{{Stylocheilus} striatus}},\n\tvolume = {164},\n\tcopyright = {All rights reserved},\n\tissn = {0025-3162, 1432-1793},\n\turl = {http://link.springer.com/10.1007/s00227-017-3133-x},\n\tdoi = {10.1007/s00227-017-3133-x},\n\tlanguage = {en},\n\tnumber = {5},\n\turldate = {2024-01-09},\n\tjournal = {Marine Biology},\n\tauthor = {Armstrong, Eric J. and Allen, Trevor R. and Beltrand, Maeva and Dubousquet, Vaimiti and Stillman, Jonathon H. and Mills, Suzanne C.},\n\tmonth = may,\n\tyear = {2017},\n\tpages = {107},\n}\n\n
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\n \n\n \n \n \n \n \n \n Construction and Characterization of Two Novel Transcriptome Assemblies in the Congeneric Porcelain Crabs Petrolisthes cinctipes and P. manimaculis.\n \n \n \n \n\n\n \n Armstrong, E. J.; and Stillman, J. H.\n\n\n \n\n\n\n Integrative and Comparative Biology, 56(6): 1092–1102. December 2016.\n \n\n\n\n
\n\n\n\n \n \n \"ConstructionPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 3 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{armstrong_construction_2016,\n\ttitle = {Construction and {Characterization} of {Two} {Novel} {Transcriptome} {Assemblies} in the {Congeneric} {Porcelain} {Crabs} \\textit{{Petrolisthes} cinctipes} and \\textit{{P}. manimaculis}},\n\tvolume = {56},\n\tcopyright = {All rights reserved},\n\tissn = {1540-7063, 1557-7023},\n\turl = {https://academic.oup.com/icb/article/56/6/1092/2647077},\n\tdoi = {10.1093/icb/icw043},\n\tabstract = {Crustaceans have commonly been used as non-model systems in basic biological research, especially physiological regulation. With the recent and rapid adoption of functional genomic tools, crustaceans are increasingly becoming model systems for ecological investigations of development and evolution and for mechanistic examinations of genotype–phenotype interactions and molecular pathways of response to environmental stressors. Comparative transcriptomic approaches, however, remain constrained by a lack of sequence data in closely related crustacean taxa. We identify challenges in the use of functional genomics tools in comparative analysis among decapod crustacean in light of recent advances. We present RNA-seq data from two congeneric species of porcelain crabs (Petrolisthes cinctipes and P. manimaculis) used to construct two de novo transcriptome assemblies with ∼194K and ∼278K contigs, respectively. We characterize and contrast these assemblies and compare them to a previously generated EST sequence library for P. cinctipes. We also discuss the potential use of these data as a case-study system in the broader context of crustacean comparative transcriptomics.},\n\tlanguage = {en},\n\tnumber = {6},\n\turldate = {2024-01-09},\n\tjournal = {Integrative and Comparative Biology},\n\tauthor = {Armstrong, Eric J. and Stillman, Jonathon H.},\n\tmonth = dec,\n\tyear = {2016},\n\tpages = {1092--1102},\n}\n\n
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\n Crustaceans have commonly been used as non-model systems in basic biological research, especially physiological regulation. With the recent and rapid adoption of functional genomic tools, crustaceans are increasingly becoming model systems for ecological investigations of development and evolution and for mechanistic examinations of genotype–phenotype interactions and molecular pathways of response to environmental stressors. Comparative transcriptomic approaches, however, remain constrained by a lack of sequence data in closely related crustacean taxa. We identify challenges in the use of functional genomics tools in comparative analysis among decapod crustacean in light of recent advances. We present RNA-seq data from two congeneric species of porcelain crabs (Petrolisthes cinctipes and P. manimaculis) used to construct two de novo transcriptome assemblies with ∼194K and ∼278K contigs, respectively. We characterize and contrast these assemblies and compare them to a previously generated EST sequence library for P. cinctipes. We also discuss the potential use of these data as a case-study system in the broader context of crustacean comparative transcriptomics.\n
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\n \n\n \n \n \n \n \n \n Multiple Stressors in a Changing World: The Need for an Improved Perspective on Physiological Responses to the Dynamic Marine Environment.\n \n \n \n \n\n\n \n Gunderson, A. R.; Armstrong, E. J.; and Stillman, J. H.\n\n\n \n\n\n\n Annual Review of Marine Science, 8(1): 357–378. January 2016.\n \n\n\n\n
\n\n\n\n \n \n \"MultiplePaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n  \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{gunderson_multiple_2016,\n\ttitle = {Multiple {Stressors} in a {Changing} {World}: {The} {Need} for an {Improved} {Perspective} on {Physiological} {Responses} to the {Dynamic} {Marine} {Environment}},\n\tvolume = {8},\n\tcopyright = {All rights reserved},\n\tissn = {1941-1405, 1941-0611},\n\tshorttitle = {Multiple {Stressors} in a {Changing} {World}},\n\turl = {https://www.annualreviews.org/doi/10.1146/annurev-marine-122414-033953},\n\tdoi = {10.1146/annurev-marine-122414-033953},\n\tabstract = {Abiotic conditions (e.g., temperature and pH) fluctuate through time in most marine environments, sometimes passing intensity thresholds that induce physiological stress. Depending on habitat and season, the peak intensity of different abiotic stressors can occur in or out of phase with one another. Thus, some organisms are exposed to multiple stressors simultaneously, whereas others experience them sequentially. Understanding these physicochemical dynamics is critical because how organisms respond to multiple stressors depends on the magnitude and relative timing of each stressor. Here, we first discuss broad patterns of covariation between stressors in marine systems at various temporal scales. We then describe how these dynamics will influence physiological responses to multi-stressor exposures. Finally, we summarize how multi-stressor effects are currently assessed. We find that multi-stressor experiments have rarely incorporated naturalistic physicochemical variation into their designs, and emphasize the importance of doing so to make ecologically relevant inferences about physiological responses to global change.},\n\tlanguage = {en},\n\tnumber = {1},\n\turldate = {2024-01-09},\n\tjournal = {Annual Review of Marine Science},\n\tauthor = {Gunderson, Alex R. and Armstrong, Eric J. and Stillman, Jonathon H.},\n\tmonth = jan,\n\tyear = {2016},\n\tpages = {357--378},\n}\n\n
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\n Abiotic conditions (e.g., temperature and pH) fluctuate through time in most marine environments, sometimes passing intensity thresholds that induce physiological stress. Depending on habitat and season, the peak intensity of different abiotic stressors can occur in or out of phase with one another. Thus, some organisms are exposed to multiple stressors simultaneously, whereas others experience them sequentially. Understanding these physicochemical dynamics is critical because how organisms respond to multiple stressors depends on the magnitude and relative timing of each stressor. Here, we first discuss broad patterns of covariation between stressors in marine systems at various temporal scales. We then describe how these dynamics will influence physiological responses to multi-stressor exposures. Finally, we summarize how multi-stressor effects are currently assessed. We find that multi-stressor experiments have rarely incorporated naturalistic physicochemical variation into their designs, and emphasize the importance of doing so to make ecologically relevant inferences about physiological responses to global change.\n
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\n  \n 2015\n \n \n (1)\n \n \n
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\n \n\n \n \n \n \n \n \n Genomics Are Transforming Our Understanding of Responses to Climate Change.\n \n \n \n \n\n\n \n Stillman, J. H.; and Armstrong, E.\n\n\n \n\n\n\n BioScience, 65(3): 237–246. March 2015.\n \n\n\n\n
\n\n\n\n \n \n \"GenomicsPaper\n  \n \n\n \n \n doi\n  \n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n  \n \n 5 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@article{stillman_genomics_2015,\n\ttitle = {Genomics {Are} {Transforming} {Our} {Understanding} of {Responses} to {Climate} {Change}},\n\tvolume = {65},\n\tcopyright = {All rights reserved},\n\tissn = {1525-3244, 0006-3568},\n\turl = {http://academic.oup.com/bioscience/article/65/3/237/236654/Genomics-Are-Transforming-Our-Understanding-of},\n\tdoi = {10.1093/biosci/biu219},\n\tlanguage = {en},\n\tnumber = {3},\n\turldate = {2024-01-09},\n\tjournal = {BioScience},\n\tauthor = {Stillman, Jonathon H. and Armstrong, Eric},\n\tmonth = mar,\n\tyear = {2015},\n\tpages = {237--246},\n}\n
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