Collation of data on the ploidy levels and mitochondrial DNA phylogenetic lineages in the silver crucian carp Carassius auratus gibelio from Far Eastern and Central Asian populations

Collation of data on the ploidy levels and mitochondrial DNA phylogenetic lineages in the silver... The distribution of the diploid and triploid forms and the correspondence between ploidy and mitochondrial DNA (mtDNA) phylogenetic lineages of the silver crucian carp have been studied in Far Eastern water bodies and the Syr Darya River. Both diploid and triploid forms have been found in large river systems (the Amur, Suifun, Tumangan, and Syr Darya river basins). Only the diploid form has been detected in lakes of Bol’shoi Pelis Island (Peter the Great Bay of the Sea of Japan), Sakhalin Island, and the Kamchatka River basin (the Kamchatka Peninsula). It has been confirmed that there are two mtDNA phylogroups in the silver crucian carp in the area studied. Both mtDNA phylogenetic lineages are present in the Suifun and Tumangan river basins. Only one mtDNA phylogroup (characteristic of the gynogenetic form) has been detected in two samples from the Amur River and in the Syr Darya population. The other mtDNA phylogroup is predominant in insular populations and in Kamchatka. The gynogenetic form carries only mtDNA phylogroup I, whereas both phylogroups have been found in diploid bisexual fish. The existence of only two mtDNA phylogroups substantially differing from each other indicates that the gynogenetic form has emerged from the diploid form only once and evolved independently for a long time after that. The absence of haplotypes transitional between the two mtDNA phylogroups suggests that the secondary contact between the gynogenetic and bisexual forms in continental populations occurred within recent historical time. The obtained data confirm that genetic (though asymmetric) exchange between the two forms is possible, which explains the high morphological and, probably, genetic similarity between them. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Collation of data on the ploidy levels and mitochondrial DNA phylogenetic lineages in the silver crucian carp Carassius auratus gibelio from Far Eastern and Central Asian populations

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2008 by MAIK Nauka
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795408070168
Publisher site
See Article on Publisher Site

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