Genetic drift in a hatchery and the maintenance of genetic diversity in hatchery-wild systems

Autor:	Masashi Yokota, Masaru Iizuka, Yasushi Harada
Rok vydání:	2003
Předmět:	Fishery Genetic diversity Stocking Natural population growth Genetic drift Genetic variation Population genetics Broodstock Aquatic Science Biology Hatchery
Zdroj:	Fisheries Science. 69:101-109
ISSN:	1444-2906 0919-9268
DOI:	10.1046/j.1444-2906.2003.00593.x
Popis:	Loss of within-population genetic diversity by genetic drift is related to stocking. In order to reduce it, selective use of wild-born individuals for hatchery broodstock is proposed. Its effectiveness is evaluated by the analytical method and numerical simulation. Results indicated that it is effective, especially when the ratio of released hatchery-produced individuals is high in the natural population. Loss of within-population genetic diversity by a few other strategies of broodstock preparation is also analyzed by numerical simulation and the effectiveness of these is also discussed.
Databáze:	OpenAIRE
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