Attempts to induce gynogenetic chinook salmon by chinook‐sockeye and chinook‐brown trout crosses
作者:
F. Y. T. Sin,
C. L. Hopkins,
期刊:
New Zealand Journal of Marine and Freshwater Research
(Taylor Available online 1990)
卷期:
Volume 24,
issue 1
页码: 1-7
ISSN:0028-8330
年代: 1990
DOI:10.1080/00288330.1990.9516397
出版商: Taylor & Francis Group
关键词: gynogenesis;chinook;sockeye;brown trout;pressure shock;electrophoresis;protein;isozymes
数据来源: Taylor
摘要:
Attempts were made to induce gynogenesis in bisexual chinook salmon(Oncorhynchus tshawytscha)by insemination of chinook eggs with sperms from either sockeye salmon(O. nerka)or brown trout(Salmo trutta). In both crosses the success rate of induction of embryonic development was low and the hatched fish had poor survival. Physically normal and deformed progeny were found in both crosses. Our study suggests that the timing of pressure shock after insemination, and the method of application of pressure shock, may be critical in the induction of embryonic development. Electrophoretic analysis of soluble proteins and three isozymes revealed that the progeny produced by the two crosses were not truely gynogenetic, as paternal gene expression was detected. However, the persistent expression or non‐expression of the same paternal genes in all the progeny suggests that the activation or inactivation of these paternal genes did not occur at random.
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