Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature
We transferred embryos of pink (Oncorhynchus gorbuscha) and chum (Oncorhynchus keta) salmon from 8 to 2 °C at five stages of development: 16-cell stage, blastula stage, completion of epiboly, early eye pigmentation, and late eye pigmentation. Survival rates of the embryos increased the later in deve...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1987
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Online Access: | http://dx.doi.org/10.1139/z87-015 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-015 |
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crcansciencepubl:10.1139/z87-015 2024-03-24T09:04:29+00:00 Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature Beacham, Terry D. Murray, Clyde B. 1987 http://dx.doi.org/10.1139/z87-015 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-015 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 65, issue 1, page 96-105 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1987 crcansciencepubl https://doi.org/10.1139/z87-015 2024-02-26T15:23:02Z We transferred embryos of pink (Oncorhynchus gorbuscha) and chum (Oncorhynchus keta) salmon from 8 to 2 °C at five stages of development: 16-cell stage, blastula stage, completion of epiboly, early eye pigmentation, and late eye pigmentation. Survival rates of the embryos increased the later in development that they were transferred to 2 °C. All pink salmon blastulas transferred died, whereas 50% of chum salmon blastulas transferred survived until hatching. After epiboly was complete, survival rates of the embryos subsequently transferred to 2 °C were usually in excess of 75%. Chum salmon embryos had higher survival rates than did pink salmon embryos at all transfer stages. Significant differences were found in embryo survival rates among stocks within species and among families within stocks. Fry from early-spawning chum salmon took longer for exogenous yolk absorption ("button-up") than did those from late-spawning ones. Alevins and fry from early transfers were generally smaller than those from later ones. Different trends in embryo and alevin survival rates and alevin and fry size among stocks within species and among families within stocks were assumed to be indicative of adaptive variation to variable natural incubation environments. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Canadian Journal of Zoology 65 1 96 105 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Beacham, Terry D. Murray, Clyde B. Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
We transferred embryos of pink (Oncorhynchus gorbuscha) and chum (Oncorhynchus keta) salmon from 8 to 2 °C at five stages of development: 16-cell stage, blastula stage, completion of epiboly, early eye pigmentation, and late eye pigmentation. Survival rates of the embryos increased the later in development that they were transferred to 2 °C. All pink salmon blastulas transferred died, whereas 50% of chum salmon blastulas transferred survived until hatching. After epiboly was complete, survival rates of the embryos subsequently transferred to 2 °C were usually in excess of 75%. Chum salmon embryos had higher survival rates than did pink salmon embryos at all transfer stages. Significant differences were found in embryo survival rates among stocks within species and among families within stocks. Fry from early-spawning chum salmon took longer for exogenous yolk absorption ("button-up") than did those from late-spawning ones. Alevins and fry from early transfers were generally smaller than those from later ones. Different trends in embryo and alevin survival rates and alevin and fry size among stocks within species and among families within stocks were assumed to be indicative of adaptive variation to variable natural incubation environments. |
format |
Article in Journal/Newspaper |
author |
Beacham, Terry D. Murray, Clyde B. |
author_facet |
Beacham, Terry D. Murray, Clyde B. |
author_sort |
Beacham, Terry D. |
title |
Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
title_short |
Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
title_full |
Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
title_fullStr |
Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
title_full_unstemmed |
Effects of transferring pink ( Oncorhynchus gorbuscha ) and chum ( Oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
title_sort |
effects of transferring pink ( oncorhynchus gorbuscha ) and chum ( oncorhynchus keta ) salmon embryos at different developmental stages to a low incubation temperature |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/z87-015 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-015 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Keta |
geographic_facet |
Keta |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Canadian Journal of Zoology volume 65, issue 1, page 96-105 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z87-015 |
container_title |
Canadian Journal of Zoology |
container_volume |
65 |
container_issue |
1 |
container_start_page |
96 |
op_container_end_page |
105 |
_version_ |
1794405719069425664 |