The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ...
This study was undertaken to try to delay gonadal maturation of pink salmon for one year beyond their normal two year life cycle. This would allow these fish to spawn in years of low or nonexistent escapement and possibly increase these "poor" year populations. Three experiments were condu...
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2011
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Online Access: | https://dx.doi.org/10.14288/1.0101204 https://doi.library.ubc.ca/10.14288/1.0101204 |
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ftdatacite:10.14288/1.0101204 2024-04-28T08:36:19+00:00 The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... Flynn, Michael Bernard 2011 https://dx.doi.org/10.14288/1.0101204 https://doi.library.ubc.ca/10.14288/1.0101204 en eng University of British Columbia article-journal Text ScholarlyArticle 2011 ftdatacite https://doi.org/10.14288/1.0101204 2024-04-02T09:35:58Z This study was undertaken to try to delay gonadal maturation of pink salmon for one year beyond their normal two year life cycle. This would allow these fish to spawn in years of low or nonexistent escapement and possibly increase these "poor" year populations. Three experiments were conducted to investigate the efficacy of the antigonadotropic drug, methallibure, in inhibiting gonadal maturation in pink salmon. Gonadosomatic index, oocyte diameter, and stages of cell maturation in the testis and oocyte maturation in the ovary were measured. The first or pilot experiment involved a range of doses of methallibure (0.10 mg., 0.32 mg., and 1.0 mg./gm./2wks.) to determine the optimal dose for subsequent experiments. All doses had only a slight slowing effect on maturation. This result and possible undesirable effects of higher doses prompted the decision to use the 0.10 mg./gm. dose for subsequent experiments. The second or long-term experiment investigated the effects of methallibure and a constant 12 hours ... Text 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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ftdatacite |
language |
English |
description |
This study was undertaken to try to delay gonadal maturation of pink salmon for one year beyond their normal two year life cycle. This would allow these fish to spawn in years of low or nonexistent escapement and possibly increase these "poor" year populations. Three experiments were conducted to investigate the efficacy of the antigonadotropic drug, methallibure, in inhibiting gonadal maturation in pink salmon. Gonadosomatic index, oocyte diameter, and stages of cell maturation in the testis and oocyte maturation in the ovary were measured. The first or pilot experiment involved a range of doses of methallibure (0.10 mg., 0.32 mg., and 1.0 mg./gm./2wks.) to determine the optimal dose for subsequent experiments. All doses had only a slight slowing effect on maturation. This result and possible undesirable effects of higher doses prompted the decision to use the 0.10 mg./gm. dose for subsequent experiments. The second or long-term experiment investigated the effects of methallibure and a constant 12 hours ... |
format |
Text |
author |
Flynn, Michael Bernard |
spellingShingle |
Flynn, Michael Bernard The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... |
author_facet |
Flynn, Michael Bernard |
author_sort |
Flynn, Michael Bernard |
title |
The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... |
title_short |
The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... |
title_full |
The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... |
title_fullStr |
The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... |
title_full_unstemmed |
The effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (Oncorphynchus gorbuscha) ... |
title_sort |
effect of methallibure and a constant 12 hours light : 12 hours dark photoperiod on the gonadal maturation of pink salmon (oncorphynchus gorbuscha) ... |
publisher |
University of British Columbia |
publishDate |
2011 |
url |
https://dx.doi.org/10.14288/1.0101204 https://doi.library.ubc.ca/10.14288/1.0101204 |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_doi |
https://doi.org/10.14288/1.0101204 |
_version_ |
1797568130381250560 |