Clonal Diversity in the Japanese Silver Crucian Carp, Carassius langsdorfii Inferred from Genetic Markers(Animal Diversity and Evolution)
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概要
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The Japanese silver crucian carp, Carassius langsdorfii, is a naturally polyploid fish that reproduces by gynogenesis, resulting in a geographically clustered clonal population. To determine the amount of clonal diversity in this species, we used genetic markers to compare fish from several Japanese locations. Samples were collected from Lake Kasumigaura (Ibaraki Pref.), Lake Imba (Chiba Pref.), Lake Fukushimagata (Niigata Pref.), Lake Biwa (Shiga Pref.), Lake Koyama (Tottori Pref.), and the Niyodo and Monobe Rivers (Kochi Pref.). The genetic markers used were the microsatellite loci GF1*, GF17*, and GF29*, as well as isozyme (creatinekinase CK*) and mtDNA (D-loop region) RFLP. In the seven locations sampled, 61 clonal lines were identified by combining the genotypes of the three microsatellite loci. Populations at all locations consisted of six to 28 clonal lines. Fourteen common clonal lines were detected in two or more locations, and 13 of these were observed in Lake Biwa. We suggest that these clonal lines have been widely distributed in Japanese freshwaters through the intentional stocking of fish species such as "gengorobuna" (C. cuvieri) and "ayu" (Plecoglossus altivelis altivelis) obtained from Lake Biwa and its adjacent waters. The CK* genotypes and mtDNA haplotypes of fish from Lake Kasumigaura differed from those of other locations.
- 2003-06-25
著者
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Ohara K
Tohoku Univ. Sendai Jpn
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Ohara K
Laboratory Of Applied Population Genetics Graduate School Of Agricultural Science Tohoku University:
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Ohara Kenichi
Laboratory Of Applied Population Genetics Graduate School Of Agricultural Science Tohoku University
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Taniguchi Nobuhiko
Laboratory of Applied Population Genetics, Graduate School of Agricultural Science, Tohoku Universit
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Sumida Eiji
Department Of Aquaculture Faculty Of Agriculture Kochi University
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Taniguchi N
Laboratory Of Population Genetics Informatics Graduate School Of Agricultural Science Tohoku Univers
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Ariyoshi Takahiro
Department of Aquaculture, Faculty of Agriculture, Kochi University
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Ariyoshi Takahiro
Department Of Aquaculture Faculty Of Agriculture Kochi University
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Taniguchi Nobuhiko
Laboratory Of Applied Population Genetic Informatics Graduate School Of Agricultural Science Tohoku
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Taniguchi Nobuhiko
Laboratory Of Population Genetic Informatics Graduate School Of Agricultural Science Tohoku University
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