An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ...
This study was undertaken to determine whether the gonads of pink salmon (Oncorhynchus gorbuscha), could be stimulated with exogenous hormones to reproductive maturity one year earlier than normal. This procedure, if successful, could be used as a method for repopulating ‘off’ year cycles of pink sa...
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University of British Columbia
2011
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Online Access: | https://dx.doi.org/10.14288/1.0093293 https://doi.library.ubc.ca/10.14288/1.0093293 |
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ftdatacite:10.14288/1.0093293 2024-04-28T08:35:07+00:00 An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... Funk, James D. 2011 https://dx.doi.org/10.14288/1.0093293 https://doi.library.ubc.ca/10.14288/1.0093293 en eng University of British Columbia article-journal Text ScholarlyArticle 2011 ftdatacite https://doi.org/10.14288/1.0093293 2024-04-02T09:35:31Z This study was undertaken to determine whether the gonads of pink salmon (Oncorhynchus gorbuscha), could be stimulated with exogenous hormones to reproductive maturity one year earlier than normal. This procedure, if successful, could be used as a method for repopulating ‘off’ year cycles of pink salmon in numerous rivers in British Columbia and Washington. In the juvenile males, complete sexual maturity was attained by September in the year of hatching with thrice-weekly treatments of 10.0 micrograms and of 1.0 micrograms salmon (Oncorhynchus tshawytscha) gonadotropin per gram body weight. Histological examination of the precociously mature testes, and comparison with testes from uninjected controls repealed that the time of onset of the mitotic division of spermatogonia to form the primary spermatocyte, and the process of active spermatogenesis were accelerated. At sexual maturity, a scattering of localizations of ∆5-3ß hydroxysteroid dehydrogenase activity was observed which corresponded to the ... Text Oncorhynchus gorbuscha Pink salmon DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
This study was undertaken to determine whether the gonads of pink salmon (Oncorhynchus gorbuscha), could be stimulated with exogenous hormones to reproductive maturity one year earlier than normal. This procedure, if successful, could be used as a method for repopulating ‘off’ year cycles of pink salmon in numerous rivers in British Columbia and Washington. In the juvenile males, complete sexual maturity was attained by September in the year of hatching with thrice-weekly treatments of 10.0 micrograms and of 1.0 micrograms salmon (Oncorhynchus tshawytscha) gonadotropin per gram body weight. Histological examination of the precociously mature testes, and comparison with testes from uninjected controls repealed that the time of onset of the mitotic division of spermatogonia to form the primary spermatocyte, and the process of active spermatogenesis were accelerated. At sexual maturity, a scattering of localizations of ∆5-3ß hydroxysteroid dehydrogenase activity was observed which corresponded to the ... |
format |
Text |
author |
Funk, James D. |
spellingShingle |
Funk, James D. An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... |
author_facet |
Funk, James D. |
author_sort |
Funk, James D. |
title |
An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... |
title_short |
An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... |
title_full |
An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... |
title_fullStr |
An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... |
title_full_unstemmed |
An investigation of the induction of precocious sexual maturity in juvenile pink salmon Oncorhynchus gorbuscha ... |
title_sort |
investigation of the induction of precocious sexual maturity in juvenile pink salmon oncorhynchus gorbuscha ... |
publisher |
University of British Columbia |
publishDate |
2011 |
url |
https://dx.doi.org/10.14288/1.0093293 https://doi.library.ubc.ca/10.14288/1.0093293 |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_doi |
https://doi.org/10.14288/1.0093293 |
_version_ |
1797567261722017792 |