Spawning induction, and larval and juvenile rearing of the giant clam, <i>Tridacna gigas</i>. Crawford, C., Nash, W., & Lucas, J. S. Aquaculture, 58(3-4):281–295, 1986. doi abstract bibtex Specimens of Tridacna gigas (L.) with mature gonads were selected for broodstock using a biopsy technique and induced to spawn using intragonadal were reared using conventional to settlement injections of serotonin. Some larvae bivalve rearing techniques in 500-l tanks, with up to 40% survival raceways. There was heavy mortality at or soon after metamorphosis after 7-8 days. Other larvae were reared extensively from eggs added directly to in all groups of juvenile clams and survival of juveniles from intensive larval rearing was less than 1% to harvesting at 5 months. Similar numbers of juvenile clams were harvested from raceways to which 4 x lo5 intensively reared pediveligers or 2 x lo7 eggs (extensive juvenile clams. Some juvenile clams were fed cultured microalgae for several months to supplement the nutrients obtained from their symbiotic zooxanthellae. These clams showed poorer survival than unfed clams, apparently because they were more overgrown by benthic algae. The distribu- tion of juveniles in the raceways at harvesting was not influenced by water turbulence or shading, but growth rates were reduced by shading. Growth rates and densities of juveniles were much higher on textured than smooth substrates. We have shown that the mass rearing methods used for bivalve mollusc larvae are appropriate to T. gigas larvae; however, the typical methods for bivalve nursery rearing are not readily applicable to giant clam juveniles. Further research is requiredon these methods and on factors affecting juvenile survival and growth
@article{crawford_spawning_1986,
title = {Spawning induction, and larval and juvenile rearing of the giant clam, \textit{{Tridacna} gigas}.},
volume = {58},
issn = {00448486},
doi = {10.1016/0044-8486(86)90094-3},
abstract = {Specimens of Tridacna gigas (L.) with mature gonads were selected for broodstock using a biopsy technique and induced to spawn using intragonadal were reared using conventional to settlement injections of serotonin. Some larvae bivalve rearing techniques in 500-l tanks, with up to 40\% survival raceways. There was heavy mortality at or soon after metamorphosis after 7-8 days. Other larvae were reared extensively from eggs added directly to in all groups of juvenile clams and survival of juveniles from intensive larval rearing was less than 1\% to harvesting at 5 months. Similar numbers of juvenile clams were harvested from raceways to which 4 x lo5 intensively reared pediveligers or 2 x lo7 eggs (extensive juvenile clams. Some juvenile clams were fed cultured microalgae for several months to supplement the nutrients obtained from their symbiotic zooxanthellae. These clams showed poorer survival than unfed clams, apparently because they were more overgrown by benthic algae. The distribu- tion of juveniles in the raceways at harvesting was not influenced by water turbulence or shading, but growth rates were reduced by shading. Growth rates and densities of juveniles were much higher on textured than smooth substrates. We have shown that the mass rearing methods used for bivalve mollusc larvae are appropriate to T. gigas larvae; however, the typical methods for bivalve nursery rearing are not readily applicable to giant clam juveniles. Further research is requiredon these methods and on factors affecting juvenile survival and growth},
number = {3-4},
journal = {Aquaculture},
author = {Crawford, C.M. and Nash, W.J. and Lucas, John S.},
year = {1986},
pages = {281--295},
}
Downloads: 0
{"_id":"ieNmeQ2JBoPJvTvzx","bibbaseid":"crawford-nash-lucas-spawninginductionandlarvalandjuvenilerearingofthegiantclamitridacnagigasi-1986","author_short":["Crawford, C.","Nash, W.","Lucas, J. S."],"bibdata":{"bibtype":"article","type":"article","title":"Spawning induction, and larval and juvenile rearing of the giant clam, <i>Tridacna gigas</i>.","volume":"58","issn":"00448486","doi":"10.1016/0044-8486(86)90094-3","abstract":"Specimens of Tridacna gigas (L.) with mature gonads were selected for broodstock using a biopsy technique and induced to spawn using intragonadal were reared using conventional to settlement injections of serotonin. Some larvae bivalve rearing techniques in 500-l tanks, with up to 40% survival raceways. There was heavy mortality at or soon after metamorphosis after 7-8 days. Other larvae were reared extensively from eggs added directly to in all groups of juvenile clams and survival of juveniles from intensive larval rearing was less than 1% to harvesting at 5 months. Similar numbers of juvenile clams were harvested from raceways to which 4 x lo5 intensively reared pediveligers or 2 x lo7 eggs (extensive juvenile clams. Some juvenile clams were fed cultured microalgae for several months to supplement the nutrients obtained from their symbiotic zooxanthellae. These clams showed poorer survival than unfed clams, apparently because they were more overgrown by benthic algae. The distribu- tion of juveniles in the raceways at harvesting was not influenced by water turbulence or shading, but growth rates were reduced by shading. Growth rates and densities of juveniles were much higher on textured than smooth substrates. We have shown that the mass rearing methods used for bivalve mollusc larvae are appropriate to T. gigas larvae; however, the typical methods for bivalve nursery rearing are not readily applicable to giant clam juveniles. Further research is requiredon these methods and on factors affecting juvenile survival and growth","number":"3-4","journal":"Aquaculture","author":[{"propositions":[],"lastnames":["Crawford"],"firstnames":["C.M."],"suffixes":[]},{"propositions":[],"lastnames":["Nash"],"firstnames":["W.J."],"suffixes":[]},{"propositions":[],"lastnames":["Lucas"],"firstnames":["John","S."],"suffixes":[]}],"year":"1986","pages":"281–295","bibtex":"@article{crawford_spawning_1986,\n\ttitle = {Spawning induction, and larval and juvenile rearing of the giant clam, \\textit{{Tridacna} gigas}.},\n\tvolume = {58},\n\tissn = {00448486},\n\tdoi = {10.1016/0044-8486(86)90094-3},\n\tabstract = {Specimens of Tridacna gigas (L.) with mature gonads were selected for broodstock using a biopsy technique and induced to spawn using intragonadal were reared using conventional to settlement injections of serotonin. Some larvae bivalve rearing techniques in 500-l tanks, with up to 40\\% survival raceways. There was heavy mortality at or soon after metamorphosis after 7-8 days. Other larvae were reared extensively from eggs added directly to in all groups of juvenile clams and survival of juveniles from intensive larval rearing was less than 1\\% to harvesting at 5 months. Similar numbers of juvenile clams were harvested from raceways to which 4 x lo5 intensively reared pediveligers or 2 x lo7 eggs (extensive juvenile clams. Some juvenile clams were fed cultured microalgae for several months to supplement the nutrients obtained from their symbiotic zooxanthellae. These clams showed poorer survival than unfed clams, apparently because they were more overgrown by benthic algae. The distribu- tion of juveniles in the raceways at harvesting was not influenced by water turbulence or shading, but growth rates were reduced by shading. Growth rates and densities of juveniles were much higher on textured than smooth substrates. We have shown that the mass rearing methods used for bivalve mollusc larvae are appropriate to T. gigas larvae; however, the typical methods for bivalve nursery rearing are not readily applicable to giant clam juveniles. Further research is requiredon these methods and on factors affecting juvenile survival and growth},\n\tnumber = {3-4},\n\tjournal = {Aquaculture},\n\tauthor = {Crawford, C.M. and Nash, W.J. and Lucas, John S.},\n\tyear = {1986},\n\tpages = {281--295},\n}\n\n","author_short":["Crawford, C.","Nash, W.","Lucas, J. S."],"key":"crawford_spawning_1986","id":"crawford_spawning_1986","bibbaseid":"crawford-nash-lucas-spawninginductionandlarvalandjuvenilerearingofthegiantclamitridacnagigasi-1986","role":"author","urls":{},"metadata":{"authorlinks":{}},"html":""},"bibtype":"article","biburl":"https://bibbase.org/zotero/armst185","dataSources":["vzQnKyKjKrdynJxFW"],"keywords":[],"search_terms":["spawning","induction","larval","juvenile","rearing","giant","clam","tridacna","gigas","crawford","nash","lucas"],"title":"Spawning induction, and larval and juvenile rearing of the giant clam, <i>Tridacna gigas</i>.","year":1986}