Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis
Abstract Two 10‐day hatchery experiments were conducted to evaluate s‐type (Hawaiian strain) and ss‐type (Thailand strain) rotifers Brachionus plicatilis and cryogenically preserved oyster Crassostrea gigas trochophores as first feeds for larval Nassau grouper Epinephelus striatus . Newly hatched gr...
Published in: | Journal of the World Aquaculture Society |
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Online Access: | http://dx.doi.org/10.1111/j.1749-7345.1996.tb00615.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1749-7345.1996.tb00615.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1749-7345.1996.tb00615.x |
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crwiley:10.1111/j.1749-7345.1996.tb00615.x 2023-12-03T10:21:42+01:00 Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis Watanabe, Wade O. Ellis, Simon C. Ellis, Eileen P. Lopez, Vicente Gracia Bass, Paul Ginoza, John Moriwake, Aaron 1996 http://dx.doi.org/10.1111/j.1749-7345.1996.tb00615.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1749-7345.1996.tb00615.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1749-7345.1996.tb00615.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of the World Aquaculture Society volume 27, issue 3, page 323-331 ISSN 0893-8849 1749-7345 Agronomy and Crop Science Aquatic Science journal-article 1996 crwiley https://doi.org/10.1111/j.1749-7345.1996.tb00615.x 2023-11-09T13:40:35Z Abstract Two 10‐day hatchery experiments were conducted to evaluate s‐type (Hawaiian strain) and ss‐type (Thailand strain) rotifers Brachionus plicatilis and cryogenically preserved oyster Crassostrea gigas trochophores as first feeds for larval Nassau grouper Epinephelus striatus . Newly hatched grouper larvae were reared at densities of 11.2–20.8/L in 500‐L tanks at 36–38 ppt salinity, 25–26 C, and under a 11‐h light: 13‐h dark photoperiod. Beginning on day 2 posthatching (d2ph), prey were maintained at a density of 20 individuals/mL, while phytoplankton ( Nanochloropsis oculata ) was maintained at 500 × 10 3 cells/mL. In experiment 1, survival and growth were higher ( P < 0.05) for fish fed small s‐type rotifers (mean lorica length = 117 μm; fish survival = 7.96%) selected by sieving than for fish fed non‐selected rotifers (mean lorica length = 161 μm; fish survival = 2.13%). These results demonstrated the advantage of small prey size and suggested that super‐small (ss‐type) rotifer strains would be beneficial. In experiment 2, three feeding regimens were compared: 1) ss‐type rotifers (mean lorica length = 147 μm); 2) oyster trochophores (mean diameter = 50 μm) gradually replaced by ss‐type rotifers from d5ph; and 3) a mixed‐prey teatment of 50% oyster trochophores and 50% ss‐type rotifers. Survival was higher ( P < 0.05) for larvae fed mixed prey (15.6%) than for those fed rotifers (9.73%) or trochophores and rotifers in sequence (2.55%), which also showed the slowest growth. Oyster trochophores, although inadequate when used exclusively, enhanced survival when used in combination with rotifers, possibly by improving size selectivity and dietary quality. In a pilot‐scale trial, larvae were cultured through metamorphosis in two 33.8‐m 3 outdoor tanks. Fertilized eggs were stocked at a density of 10 eggs/L and larvae were fed ss‐type rotifers from d2ph‐d20ph, newly hatched Artemia from d15ph‐d18ph, 1‐d‐old Artemia nauplii from d18ph‐d62ph. Survival on d62ph was 1.17%, with a total of 5,651 ... Article in Journal/Newspaper Crassostrea gigas Rotifer Wiley Online Library (via Crossref) Journal of the World Aquaculture Society 27 3 323 331 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Agronomy and Crop Science Aquatic Science |
spellingShingle |
Agronomy and Crop Science Aquatic Science Watanabe, Wade O. Ellis, Simon C. Ellis, Eileen P. Lopez, Vicente Gracia Bass, Paul Ginoza, John Moriwake, Aaron Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis |
topic_facet |
Agronomy and Crop Science Aquatic Science |
description |
Abstract Two 10‐day hatchery experiments were conducted to evaluate s‐type (Hawaiian strain) and ss‐type (Thailand strain) rotifers Brachionus plicatilis and cryogenically preserved oyster Crassostrea gigas trochophores as first feeds for larval Nassau grouper Epinephelus striatus . Newly hatched grouper larvae were reared at densities of 11.2–20.8/L in 500‐L tanks at 36–38 ppt salinity, 25–26 C, and under a 11‐h light: 13‐h dark photoperiod. Beginning on day 2 posthatching (d2ph), prey were maintained at a density of 20 individuals/mL, while phytoplankton ( Nanochloropsis oculata ) was maintained at 500 × 10 3 cells/mL. In experiment 1, survival and growth were higher ( P < 0.05) for fish fed small s‐type rotifers (mean lorica length = 117 μm; fish survival = 7.96%) selected by sieving than for fish fed non‐selected rotifers (mean lorica length = 161 μm; fish survival = 2.13%). These results demonstrated the advantage of small prey size and suggested that super‐small (ss‐type) rotifer strains would be beneficial. In experiment 2, three feeding regimens were compared: 1) ss‐type rotifers (mean lorica length = 147 μm); 2) oyster trochophores (mean diameter = 50 μm) gradually replaced by ss‐type rotifers from d5ph; and 3) a mixed‐prey teatment of 50% oyster trochophores and 50% ss‐type rotifers. Survival was higher ( P < 0.05) for larvae fed mixed prey (15.6%) than for those fed rotifers (9.73%) or trochophores and rotifers in sequence (2.55%), which also showed the slowest growth. Oyster trochophores, although inadequate when used exclusively, enhanced survival when used in combination with rotifers, possibly by improving size selectivity and dietary quality. In a pilot‐scale trial, larvae were cultured through metamorphosis in two 33.8‐m 3 outdoor tanks. Fertilized eggs were stocked at a density of 10 eggs/L and larvae were fed ss‐type rotifers from d2ph‐d20ph, newly hatched Artemia from d15ph‐d18ph, 1‐d‐old Artemia nauplii from d18ph‐d62ph. Survival on d62ph was 1.17%, with a total of 5,651 ... |
format |
Article in Journal/Newspaper |
author |
Watanabe, Wade O. Ellis, Simon C. Ellis, Eileen P. Lopez, Vicente Gracia Bass, Paul Ginoza, John Moriwake, Aaron |
author_facet |
Watanabe, Wade O. Ellis, Simon C. Ellis, Eileen P. Lopez, Vicente Gracia Bass, Paul Ginoza, John Moriwake, Aaron |
author_sort |
Watanabe, Wade O. |
title |
Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis |
title_short |
Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis |
title_full |
Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis |
title_fullStr |
Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis |
title_full_unstemmed |
Evaluation of First‐Feeding Regimens for Larval Nassau Grouper Epinephelus straitus and Preliminary, Pilot‐Scale Culture through Metamorphosis |
title_sort |
evaluation of first‐feeding regimens for larval nassau grouper epinephelus straitus and preliminary, pilot‐scale culture through metamorphosis |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.1111/j.1749-7345.1996.tb00615.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1749-7345.1996.tb00615.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1749-7345.1996.tb00615.x |
genre |
Crassostrea gigas Rotifer |
genre_facet |
Crassostrea gigas Rotifer |
op_source |
Journal of the World Aquaculture Society volume 27, issue 3, page 323-331 ISSN 0893-8849 1749-7345 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1749-7345.1996.tb00615.x |
container_title |
Journal of the World Aquaculture Society |
container_volume |
27 |
container_issue |
3 |
container_start_page |
323 |
op_container_end_page |
331 |
_version_ |
1784269488972103680 |