Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis
In order to compare the effects on reproductive performance of short-term or prolonged exposure to elevated temperatures during vitellogenesis, female Atlantic salmon Salmo salar were held at a water temperature of 22° C for periods of 4 or 6 weeks during the austral summer and autumn. Plasma levels...
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Online Access: | https://eprints.utas.edu.au/3892/ https://eprints.utas.edu.au/3892/1/3892.pdf https://doi.org/10.1111/j.1095-8649.2006.01295.x |
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ftunivtasmania:oai:eprints.utas.edu.au:3892 2023-05-15T15:31:49+02:00 Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis King, HR Pankhurst, NW Watts, M 2007 application/pdf https://eprints.utas.edu.au/3892/ https://eprints.utas.edu.au/3892/1/3892.pdf https://doi.org/10.1111/j.1095-8649.2006.01295.x en eng Wiley-Blackwell Publishing Ltd https://eprints.utas.edu.au/3892/1/3892.pdf King, HR, Pankhurst, NW and Watts, M 2007 , 'Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis' , Journal of Fish Biology, vol. 70, no. 1 , pp. 190-205 , doi:10.1111/j.1095-8649.2006.01295.x <http://dx.doi.org/10.1111/j.1095-8649.2006.01295.x>. cc_utas 300703 Aquaculture reproductive success salmon steroidogenesis temperature vitellogenesis Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.1111/j.1095-8649.2006.01295.x 2020-05-30T07:17:40Z In order to compare the effects on reproductive performance of short-term or prolonged exposure to elevated temperatures during vitellogenesis, female Atlantic salmon Salmo salar were held at a water temperature of 22° C for periods of 4 or 6 weeks during the austral summer and autumn. Plasma levels of 17b-oestradiol (E2), testosterone (T) and vitellogenin (Vtg) were monitored and reproductive success was compared to that in groups of fish maintained at 14 or 22° C for 12 weeks from mid-January. Significant endocrine effects were observed within as few as 3 days of the commencement of exposure to 22° C, when plasma levels of E2 (c. 05 ng ml1) and Vtg (c. 14 mg ml1) were approximately half those observed in fish maintained at 14° C (c. 10 ng ml1 and 27 mg ml1 respectively). The fertility and survival to the eyed stage of ova from fish held at 14° C exceeded 85 and 70% respectively, whereas ova from fish held at 22° C for 6 or 12 weeks exhibited significantly reduced fertility (<70 and <45% respectively) and survival (c. 40 and 13% respectively). In spite of significant endocrine effects at all stages, a 4 week exposure to 22° C only generated significant reductions in egg fertility (<65%) and survival (c. 30%) when it occurred between mid-February and mid-March. Together, these data confirm that high temperature spikes can affect reproductive success as strongly as more prolonged exposures, and indicate that there is a critical period of reproductive sensitivity to elevated temperature in late February and early March in this stock of Atlantic Article in Journal/Newspaper Atlantic salmon Salmo salar University of Tasmania: UTas ePrints Austral Journal of Fish Biology 70 1 190 205 |
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Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
300703 Aquaculture reproductive success salmon steroidogenesis temperature vitellogenesis |
spellingShingle |
300703 Aquaculture reproductive success salmon steroidogenesis temperature vitellogenesis King, HR Pankhurst, NW Watts, M Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis |
topic_facet |
300703 Aquaculture reproductive success salmon steroidogenesis temperature vitellogenesis |
description |
In order to compare the effects on reproductive performance of short-term or prolonged exposure to elevated temperatures during vitellogenesis, female Atlantic salmon Salmo salar were held at a water temperature of 22° C for periods of 4 or 6 weeks during the austral summer and autumn. Plasma levels of 17b-oestradiol (E2), testosterone (T) and vitellogenin (Vtg) were monitored and reproductive success was compared to that in groups of fish maintained at 14 or 22° C for 12 weeks from mid-January. Significant endocrine effects were observed within as few as 3 days of the commencement of exposure to 22° C, when plasma levels of E2 (c. 05 ng ml1) and Vtg (c. 14 mg ml1) were approximately half those observed in fish maintained at 14° C (c. 10 ng ml1 and 27 mg ml1 respectively). The fertility and survival to the eyed stage of ova from fish held at 14° C exceeded 85 and 70% respectively, whereas ova from fish held at 22° C for 6 or 12 weeks exhibited significantly reduced fertility (<70 and <45% respectively) and survival (c. 40 and 13% respectively). In spite of significant endocrine effects at all stages, a 4 week exposure to 22° C only generated significant reductions in egg fertility (<65%) and survival (c. 30%) when it occurred between mid-February and mid-March. Together, these data confirm that high temperature spikes can affect reproductive success as strongly as more prolonged exposures, and indicate that there is a critical period of reproductive sensitivity to elevated temperature in late February and early March in this stock of Atlantic |
format |
Article in Journal/Newspaper |
author |
King, HR Pankhurst, NW Watts, M |
author_facet |
King, HR Pankhurst, NW Watts, M |
author_sort |
King, HR |
title |
Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis |
title_short |
Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis |
title_full |
Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis |
title_fullStr |
Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis |
title_full_unstemmed |
Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis |
title_sort |
reproductive sensitivity to elevated water temperatures in female atlantic salmon is heightened at certain stages of vitellogenesis |
publisher |
Wiley-Blackwell Publishing Ltd |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/3892/ https://eprints.utas.edu.au/3892/1/3892.pdf https://doi.org/10.1111/j.1095-8649.2006.01295.x |
geographic |
Austral |
geographic_facet |
Austral |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://eprints.utas.edu.au/3892/1/3892.pdf King, HR, Pankhurst, NW and Watts, M 2007 , 'Reproductive sensitivity to elevated water temperatures in female Atlantic salmon is heightened at certain stages of vitellogenesis' , Journal of Fish Biology, vol. 70, no. 1 , pp. 190-205 , doi:10.1111/j.1095-8649.2006.01295.x <http://dx.doi.org/10.1111/j.1095-8649.2006.01295.x>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1111/j.1095-8649.2006.01295.x |
container_title |
Journal of Fish Biology |
container_volume |
70 |
container_issue |
1 |
container_start_page |
190 |
op_container_end_page |
205 |
_version_ |
1766362334690803712 |