Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan
The coastal waters off Tokoro, Okhotsk Sea have been characterized by a substantial decrease in primary production from spring to summer season which will have repercussions on the maintenance of the Japanese scallop Patinopecten yessoensis (Jay, 1857) culture. This study examined the seasonal chang...
Published in: | Plankton and Benthos Research |
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The Plankton Society of Japan (The Japanese Association of Benthology)
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Online Access: | http://hdl.handle.net/10862/6326 https://doi.org/10.3800/pbr.17.156 |
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ftseafdecir:oai:repository.seafdec.org:20.500.12066/6962 2023-05-15T17:52:35+02:00 Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan Aya, Frolan Kudo, Isao Okhotsk, Sea of 2022-05-30 http://hdl.handle.net/10862/6326 https://doi.org/10.3800/pbr.17.156 en eng The Plankton Society of Japan (The Japanese Association of Benthology) https://www.jstage.jst.go.jp/article/pbr/17/2/17_B170213/_pdf/-char/en Aya, F. A., & Kudo, I. (2022). Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan. Plankton and Benthos Research, 17(2), 156–164. 1880-8247 http://hdl.handle.net/10862/6326 1882-627X doi:10.3800/pbr.17.156 scallops scallop culture growth food availability seasonal variation chlorophylls isotopes production particulate organic carbon Patinopecten yessoensis Article 2022 ftseafdecir https://doi.org/10.3800/pbr.17.156 2022-12-14T07:27:23Z The coastal waters off Tokoro, Okhotsk Sea have been characterized by a substantial decrease in primary production from spring to summer season which will have repercussions on the maintenance of the Japanese scallop Patinopecten yessoensis (Jay, 1857) culture. This study examined the seasonal changes in scallop growth, condition and organ indices in relation to environmental conditions, and compared the sinking particulate organic carbon (POC) flux as an estimate of food availability to scallop food requirements. Monthly specimens were obtained in July 2005, and from May 2006 to December 2008 off Tokoro, Okhotsk Sea. Growth parameters derived from the modified von Bertalanffy growth function of 885 scallop individuals were the mean asymptotic shell height H ∞ =126.51 mm, Brody growth coefficient K=0.081 year −1 , and t 0 =6.19 year. Condition (CI) and gonadosomatic indices (GSI) increased in April and May, decreased from June to September, but increased again from October until May. The adductor muscle index (AMI) increased from June to October, but declined from November until May when CI and GSI began to increase. Primary production (PP) and chlorophyll a biomass decreased from spring (25.75–29.74 µg C L −1 h −1 and 1.74–5.37 µg L −1 ) to autumn (0.90–10.83 µg C L −1 h −1 and 0.29–0.75 µg L −1 ) concurrent with decreasing CI and GSI, but no deleterious effect on AMI was evident during these periods. The sinking POC flux (25–68 mg C m −2 day −1 ) was low during summer when gonad activity was also low, but started to increase in autumn when gonad activity started to peak. Although a deficit in food availability (lower sinking POC fluxes than scallop food consumption) was observed during summer, the potential advection of organic matter from offshore to nearshore region may have provided additional source of food to bottom-cultured scallops, contributing in part to the increase in shell growth and somatic tissues. Article in Journal/Newspaper okhotsk sea DSpace @ SEAFDEC/AQD (Southeast Asian Fisheries Development Center, Aquaculture Department Institutional Repository - SAIR) Okhotsk Plankton and Benthos Research 17 2 156 164 |
institution |
Open Polar |
collection |
DSpace @ SEAFDEC/AQD (Southeast Asian Fisheries Development Center, Aquaculture Department Institutional Repository - SAIR) |
op_collection_id |
ftseafdecir |
language |
English |
topic |
scallops scallop culture growth food availability seasonal variation chlorophylls isotopes production particulate organic carbon Patinopecten yessoensis |
spellingShingle |
scallops scallop culture growth food availability seasonal variation chlorophylls isotopes production particulate organic carbon Patinopecten yessoensis Aya, Frolan Kudo, Isao Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan |
topic_facet |
scallops scallop culture growth food availability seasonal variation chlorophylls isotopes production particulate organic carbon Patinopecten yessoensis |
description |
The coastal waters off Tokoro, Okhotsk Sea have been characterized by a substantial decrease in primary production from spring to summer season which will have repercussions on the maintenance of the Japanese scallop Patinopecten yessoensis (Jay, 1857) culture. This study examined the seasonal changes in scallop growth, condition and organ indices in relation to environmental conditions, and compared the sinking particulate organic carbon (POC) flux as an estimate of food availability to scallop food requirements. Monthly specimens were obtained in July 2005, and from May 2006 to December 2008 off Tokoro, Okhotsk Sea. Growth parameters derived from the modified von Bertalanffy growth function of 885 scallop individuals were the mean asymptotic shell height H ∞ =126.51 mm, Brody growth coefficient K=0.081 year −1 , and t 0 =6.19 year. Condition (CI) and gonadosomatic indices (GSI) increased in April and May, decreased from June to September, but increased again from October until May. The adductor muscle index (AMI) increased from June to October, but declined from November until May when CI and GSI began to increase. Primary production (PP) and chlorophyll a biomass decreased from spring (25.75–29.74 µg C L −1 h −1 and 1.74–5.37 µg L −1 ) to autumn (0.90–10.83 µg C L −1 h −1 and 0.29–0.75 µg L −1 ) concurrent with decreasing CI and GSI, but no deleterious effect on AMI was evident during these periods. The sinking POC flux (25–68 mg C m −2 day −1 ) was low during summer when gonad activity was also low, but started to increase in autumn when gonad activity started to peak. Although a deficit in food availability (lower sinking POC fluxes than scallop food consumption) was observed during summer, the potential advection of organic matter from offshore to nearshore region may have provided additional source of food to bottom-cultured scallops, contributing in part to the increase in shell growth and somatic tissues. |
format |
Article in Journal/Newspaper |
author |
Aya, Frolan Kudo, Isao |
author_facet |
Aya, Frolan Kudo, Isao |
author_sort |
Aya, Frolan |
title |
Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan |
title_short |
Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan |
title_full |
Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan |
title_fullStr |
Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan |
title_full_unstemmed |
Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan |
title_sort |
seasonal growth, organ indices and food consumption of the japanese scallop patinopecten yessoensis (jay, 1857) in relation to food availability in tokoro seabed, okhotsk sea, north japan |
publisher |
The Plankton Society of Japan (The Japanese Association of Benthology) |
publishDate |
2022 |
url |
http://hdl.handle.net/10862/6326 https://doi.org/10.3800/pbr.17.156 |
op_coverage |
Okhotsk, Sea of |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea |
genre_facet |
okhotsk sea |
op_relation |
https://www.jstage.jst.go.jp/article/pbr/17/2/17_B170213/_pdf/-char/en Aya, F. A., & Kudo, I. (2022). Seasonal growth, organ indices and food consumption of the Japanese scallop Patinopecten yessoensis (Jay, 1857) in relation to food availability in Tokoro seabed, Okhotsk Sea, North Japan. Plankton and Benthos Research, 17(2), 156–164. 1880-8247 http://hdl.handle.net/10862/6326 1882-627X doi:10.3800/pbr.17.156 |
op_doi |
https://doi.org/10.3800/pbr.17.156 |
container_title |
Plankton and Benthos Research |
container_volume |
17 |
container_issue |
2 |
container_start_page |
156 |
op_container_end_page |
164 |
_version_ |
1766160190593302528 |