A Model of Gene Displacement by Stocking Activities.
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- Matsuishi Takashi
- Faculty of Fisheries, Hokkaido University
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- Kishino Hirohisa
- Department of Social and Interational Relations, University of Tokyo
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- Numachi Ken-Ichi
- School of Marine Science and Technology, Tokai University
Bibliographic Information
- Other Title
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- 種苗放流による遺伝子のおきかわりに関する数理モデル
- シュビョウ ホウリュウ ニ ヨル イデンシ ノ オキ カワリ ニ カンスル ス
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Description
Recent advances in aquatic hatcheries with a variety of fish and shellfish made a large scale stocking of artificially produced seeds into natural fishing grounds possible. When the genetic properties of the stocking population are different from the wild population, displacement of the gene in the wild population will gradually occur by the gene of the stocking population through reproduction. In this study, we investigate the change of the composition of both genes, in terms of the rate of stocking and fitness of the individuals of each genotype, using a simple mathematical model. When the fitness is equal in each genotype and the rate of stocking is 10%, the term that the gene of the wild becomes half (Genetic Halving Time, GHT) is 8 generations, and the term that the gene of the wild becoms 1% (Genetic Displacement Time, GDT) is 49 generations. When the fitness of the hybrid between wild and stocking individuals is smaller that both parents, GHT and GDT are much smaller.
Journal
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- NIPPON SUISAN GAKKAISHI
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NIPPON SUISAN GAKKAISHI 61 (3), 326-330, 1995
The Japanese Society of Fisheries Science
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Details 詳細情報について
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- CRID
- 1390282681389638400
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- NII Article ID
- 10004846840
- 10004853320
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- NII Book ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
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- NDL BIB ID
- 3618548
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed