Contrasting relationships between pyloric caecum and gonad growth in the starfish Asterias rubens: combined field and experimental approaches. Joly-Turquin, G., Dubois, P., Leyzour, S., Pernet, P., De Ridder, F., Pintelon, R., & Guillou, M. Journal of the Marine Biological Association of the United Kingdom, 93(4):1073--1086, 2013. doi abstract bibtex The common starfish, Asterias rubens, occurs in fluctuating environments in the North Atlantic. To better understand energy allocation dynamics, we recorded gonad, body wall, and pyloric caeca (storage organ) indices between 2000 and 2004 from three different habitats. We applied a Fourier transform to the data to evaluate and compare the seasonal variation in these indices. Specific effects of emersion and salinity variation were examined in two laboratory studies. Differences in energy allocation were found between sites and temporally within sites. Food availability appeared to be the most important factor controlling allocation dynamics while fluctuating salinity and/or emersion had a significant but smaller impact. Only severe food shortage reduced reproductive investment indicating a preferential energy allocation to gonads. This study is the first to encompass a broad range of populations over several reproduction cycles and emphasizes the ability of A. rubens to adapt to a fluctuating environment.
@article{joly-turquin_contrasting_2013,
title = {Contrasting relationships between pyloric caecum and gonad growth in the starfish {Asterias} rubens: combined field and experimental approaches},
volume = {93},
issn = {0025-3154},
doi = {10.1017/S0025315412000124},
abstract = {The common starfish, Asterias rubens, occurs in fluctuating environments in the North Atlantic. To better understand energy allocation dynamics, we recorded gonad, body wall, and pyloric caeca (storage organ) indices between 2000 and 2004 from three different habitats. We applied a Fourier transform to the data to evaluate and compare the seasonal variation in these indices. Specific effects of emersion and salinity variation were examined in two laboratory studies. Differences in energy allocation were found between sites and temporally within sites. Food availability appeared to be the most important factor controlling allocation dynamics while fluctuating salinity and/or emersion had a significant but smaller impact. Only severe food shortage reduced reproductive investment indicating a preferential energy allocation to gonads. This study is the first to encompass a broad range of populations over several reproduction cycles and emphasizes the ability of A. rubens to adapt to a fluctuating environment.},
language = {English},
number = {4},
journal = {Journal of the Marine Biological Association of the United Kingdom},
author = {Joly-Turquin, Guillemette and Dubois, Philippe and Leyzour, Sandra and Pernet, Philippe and De Ridder, Fjo and Pintelon, Rik and Guillou, Monique},
year = {2013},
keywords = {ACL, Belgium, E2, E3, Fourier transform, France, Reproduction, The Netherlands, WOS, emersion, energy storage, salinity},
pages = {1073--1086}
}
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