タラ科3種の染色体〔英文〕

概要

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Cytological observations were carried out for 3 species of Gadidae, Theragra chalcogramma, Gadus macrocephalus and Eleginus gracilis, each of which was collected around the coast of Hok-kaido, Japan. The testes, gill tissues and fins were examined. The chromosome number was estimated as 2n=44 in both sexes of T. chalcogramma and in a female of G. macrocephalus, but 2n=26 in a female and a sex-unknown individual of E. gracilis. Karyotype analysis from gill tissue indicated to have 10M+4ST+30A in T. chalcogramma, 10M+10ST+24A in G. macrocephalus, and 22M+4A in E. gracilis. The chromosome complement obtained from the gill tissues, showed that the chromosomes of T. chalcogramma and G. macrocephalus were generally somewhat thicker than those in E. gracilis. In both sexes of T. chalcogramma, no specific chromosome could be detected.
日本水産學會の論文