Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition
Spawning time of female Atlantic cod ( Gadus morhua L.) can be predicted to within 3 days using vitellogenic oocyte diameters measured over the last month before spawning. Simulations show that a l°C drop in temperature during vitellogenesis delays spawning by about 8–10 days. Similar results were o...
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1994
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crwiley:10.1111/j.1095-8649.1994.tb00939.x 2024-06-02T08:03:08+00:00 Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition Kjesbu, O. S. 1994 http://dx.doi.org/10.1111/j.1095-8649.1994.tb00939.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1994.tb00939.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1994.tb00939.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 45, issue 5, page 719-735 ISSN 0022-1112 1095-8649 journal-article 1994 crwiley https://doi.org/10.1111/j.1095-8649.1994.tb00939.x 2024-05-03T11:11:09Z Spawning time of female Atlantic cod ( Gadus morhua L.) can be predicted to within 3 days using vitellogenic oocyte diameters measured over the last month before spawning. Simulations show that a l°C drop in temperature during vitellogenesis delays spawning by about 8–10 days. Similar results were obtained with fish on low ration for 4–8 months before spawning. Moderately fed females held over two to four consecutive spawning seasons demonstrated a significant delay (⋍3–40 days) in the date of first spawning as the fish grew older and more fecund. Forecasting studies on spawning migrating Arcto‐Norwegian cod gave no evidence of a significant effect of fish length on the time of spawning. Warmer water temperature during vitellogenesis for the larger fish appears to compensate for the negative effect of fecundity On spawning time. Article in Journal/Newspaper atlantic cod Gadus morhua Wiley Online Library Journal of Fish Biology 45 5 719 735 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Spawning time of female Atlantic cod ( Gadus morhua L.) can be predicted to within 3 days using vitellogenic oocyte diameters measured over the last month before spawning. Simulations show that a l°C drop in temperature during vitellogenesis delays spawning by about 8–10 days. Similar results were obtained with fish on low ration for 4–8 months before spawning. Moderately fed females held over two to four consecutive spawning seasons demonstrated a significant delay (⋍3–40 days) in the date of first spawning as the fish grew older and more fecund. Forecasting studies on spawning migrating Arcto‐Norwegian cod gave no evidence of a significant effect of fish length on the time of spawning. Warmer water temperature during vitellogenesis for the larger fish appears to compensate for the negative effect of fecundity On spawning time. |
format |
Article in Journal/Newspaper |
author |
Kjesbu, O. S. |
spellingShingle |
Kjesbu, O. S. Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
author_facet |
Kjesbu, O. S. |
author_sort |
Kjesbu, O. S. |
title |
Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
title_short |
Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
title_full |
Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
title_fullStr |
Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
title_full_unstemmed |
Time of start of spawning in Atlantic cod ( Gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
title_sort |
time of start of spawning in atlantic cod ( gadus morhua) females in relation to vitellogenic oocyte diameter, temperature, fish length and condition |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1994.tb00939.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1994.tb00939.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1994.tb00939.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Journal of Fish Biology volume 45, issue 5, page 719-735 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1994.tb00939.x |
container_title |
Journal of Fish Biology |
container_volume |
45 |
container_issue |
5 |
container_start_page |
719 |
op_container_end_page |
735 |
_version_ |
1800747606778839040 |