Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod
The somatic growth, sexual maturation and fecundity of individually marked first‐time spawning female Atlantic cod Gadus morhua were examined under different varying temperature and feeding regimes over the months preceding spawning. A negative correlation between somatic and oocyte growth was found...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2005
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2005.00819.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2005.00819.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2005.00819.x |
id |
crwiley:10.1111/j.1095-8649.2005.00819.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1095-8649.2005.00819.x 2024-09-15T17:55:21+00:00 Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod Yoneda, M. Wright, P. J. 2005 http://dx.doi.org/10.1111/j.1095-8649.2005.00819.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2005.00819.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2005.00819.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 67, issue 5, page 1225-1241 ISSN 0022-1112 1095-8649 journal-article 2005 crwiley https://doi.org/10.1111/j.1095-8649.2005.00819.x 2024-08-09T04:27:58Z The somatic growth, sexual maturation and fecundity of individually marked first‐time spawning female Atlantic cod Gadus morhua were examined under different varying temperature and feeding regimes over the months preceding spawning. A negative correlation between somatic and oocyte growth was found, reflecting the changing energy allocation pattern. Nevertheless, the somatic growth of mature individuals was at least as high as those of immature fish over the period of vitellogenesis. Potential fecundity was positively correlated with body size, but neither temperature or feeding regime significantly affected this relationship. Consequently, fish with unlimited feeding opportunity invested more energy into somatic growth during vitellogenesis compared to those held under a restricted ration. This indicated that once Atlantic cod had made the decision to invest in first reproduction, they allocated a certain amount of energy relative to their size into egg production and any surplus was invested into somatic growth. Low temperature led to an arrest in the onset of vitellogenesis and significantly affected the number of females that matured. Article in Journal/Newspaper atlantic cod Gadus morhua Wiley Online Library Journal of Fish Biology 67 5 1225 1241 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The somatic growth, sexual maturation and fecundity of individually marked first‐time spawning female Atlantic cod Gadus morhua were examined under different varying temperature and feeding regimes over the months preceding spawning. A negative correlation between somatic and oocyte growth was found, reflecting the changing energy allocation pattern. Nevertheless, the somatic growth of mature individuals was at least as high as those of immature fish over the period of vitellogenesis. Potential fecundity was positively correlated with body size, but neither temperature or feeding regime significantly affected this relationship. Consequently, fish with unlimited feeding opportunity invested more energy into somatic growth during vitellogenesis compared to those held under a restricted ration. This indicated that once Atlantic cod had made the decision to invest in first reproduction, they allocated a certain amount of energy relative to their size into egg production and any surplus was invested into somatic growth. Low temperature led to an arrest in the onset of vitellogenesis and significantly affected the number of females that matured. |
format |
Article in Journal/Newspaper |
author |
Yoneda, M. Wright, P. J. |
spellingShingle |
Yoneda, M. Wright, P. J. Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod |
author_facet |
Yoneda, M. Wright, P. J. |
author_sort |
Yoneda, M. |
title |
Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod |
title_short |
Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod |
title_full |
Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod |
title_fullStr |
Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod |
title_full_unstemmed |
Effects of varying temperature and food availability on growth and reproduction in first‐time spawning female Atlantic cod |
title_sort |
effects of varying temperature and food availability on growth and reproduction in first‐time spawning female atlantic cod |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2005.00819.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2005.00819.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2005.00819.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Journal of Fish Biology volume 67, issue 5, page 1225-1241 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2005.00819.x |
container_title |
Journal of Fish Biology |
container_volume |
67 |
container_issue |
5 |
container_start_page |
1225 |
op_container_end_page |
1241 |
_version_ |
1810431647605063680 |