Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles
Sexual maturation in male pink salmon (Oncorhynchus gorbuscha) from Jones Creek, a tributary of the Fraser River, British Columbia, was accelerated by intraperitoneal injections of partially purified chinook salmon (O. tshawytscha) gonadotropin. The treated pinks produced milt 1 year earlier than no...
Published in: | Journal of the Fisheries Research Board of Canada |
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Canadian Science Publishing
1972
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Online Access: | http://dx.doi.org/10.1139/f72-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/f72-002 |
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crcansciencepubl:10.1139/f72-002 2024-03-03T08:47:41+00:00 Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles Donaldson, Edward M. Funk, James D. Withler, F. C. Morley, R. B. 1972 http://dx.doi.org/10.1139/f72-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/f72-002 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 29, issue 1, page 13-18 ISSN 0015-296X journal-article 1972 crcansciencepubl https://doi.org/10.1139/f72-002 2024-02-07T10:53:37Z Sexual maturation in male pink salmon (Oncorhynchus gorbuscha) from Jones Creek, a tributary of the Fraser River, British Columbia, was accelerated by intraperitoneal injections of partially purified chinook salmon (O. tshawytscha) gonadotropin. The treated pinks produced milt 1 year earlier than normal. Milt from these fish was compared with milt from wild Lower Babine River pinks with respect to its ability to fertilize the ova of Lower Babine River females. There were no marked differences in proportions of ova fertilized, in survival to hatching, or in numbers of deformed larvae. Densities of sperm in the milt from treated males ranged from 0.15 × 10 9 to 7.35 × 10 9 per ml; sperm densities in the milt from wild males ranged from 19.3 × 10 9 to 38.6 × 10 9 per ml. Two stages in testicular development were identified among the treated males and found to be directly related to the success of fertilization. The significance of induced early maturation in attempts to establish pink runs in the "off" year rivers is discussed. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing Fraser River ENVELOPE(-62.243,-62.243,56.619,56.619) Babine River ENVELOPE(-127.704,-127.704,55.683,55.683) Journal of the Fisheries Research Board of Canada 29 1 13 18 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Sexual maturation in male pink salmon (Oncorhynchus gorbuscha) from Jones Creek, a tributary of the Fraser River, British Columbia, was accelerated by intraperitoneal injections of partially purified chinook salmon (O. tshawytscha) gonadotropin. The treated pinks produced milt 1 year earlier than normal. Milt from these fish was compared with milt from wild Lower Babine River pinks with respect to its ability to fertilize the ova of Lower Babine River females. There were no marked differences in proportions of ova fertilized, in survival to hatching, or in numbers of deformed larvae. Densities of sperm in the milt from treated males ranged from 0.15 × 10 9 to 7.35 × 10 9 per ml; sperm densities in the milt from wild males ranged from 19.3 × 10 9 to 38.6 × 10 9 per ml. Two stages in testicular development were identified among the treated males and found to be directly related to the success of fertilization. The significance of induced early maturation in attempts to establish pink runs in the "off" year rivers is discussed. |
format |
Article in Journal/Newspaper |
author |
Donaldson, Edward M. Funk, James D. Withler, F. C. Morley, R. B. |
spellingShingle |
Donaldson, Edward M. Funk, James D. Withler, F. C. Morley, R. B. Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles |
author_facet |
Donaldson, Edward M. Funk, James D. Withler, F. C. Morley, R. B. |
author_sort |
Donaldson, Edward M. |
title |
Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles |
title_short |
Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles |
title_full |
Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles |
title_fullStr |
Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles |
title_full_unstemmed |
Fertilization of Pink Salmon ( Oncorhynchus gorbuscha ) Ova by Spermatozoa from Gonadotropin-Injected Juveniles |
title_sort |
fertilization of pink salmon ( oncorhynchus gorbuscha ) ova by spermatozoa from gonadotropin-injected juveniles |
publisher |
Canadian Science Publishing |
publishDate |
1972 |
url |
http://dx.doi.org/10.1139/f72-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/f72-002 |
long_lat |
ENVELOPE(-62.243,-62.243,56.619,56.619) ENVELOPE(-127.704,-127.704,55.683,55.683) |
geographic |
Fraser River Babine River |
geographic_facet |
Fraser River Babine River |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Journal of the Fisheries Research Board of Canada volume 29, issue 1, page 13-18 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f72-002 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
29 |
container_issue |
1 |
container_start_page |
13 |
op_container_end_page |
18 |
_version_ |
1792503923507986432 |