SOMATIC CHROMOSOME OF HASHIMA-FROG
1982; Linguagem: Inglês
ISSN
0001-7302
Autores Tópico(s)interferon and immune responses
ResumoHashima-frog is distributed in Northeast China.It is one of the amphibians with important economical value,and also being a component of traditional Chinese Medicine.Adult Ilashima-frog of both sexes were collected in the Heilongjiang and Liaoning provinces.An analysis of the karyotype of the Hashima-frog was based on the chromosome complements of leucocytes of peripheral blood cultured in vitro.The diploid chromosome number is 24,i.e.,12 large (relative length7.0) and 12 small (relative length6.0).The chromosomes comprised a graded size series,divided into three groups: Group 1,Group 2-6 and Group 7-12.All chromosomes were metacentric (No.1,4,5,7 and 8),submetacentric (No.2,3,6,9,11 and 12) and snbtelocentric (No.10).The most distinctive chromosome was No.9,a submetacentric chromosome with a pronounced secondary constriction in the short arms.Chromosome No.3 carries a slight secondary constriction in its short arms near their respective centromeres.The chromosomes of Hashima-frog can be very easily identified by their length and centromere index,except chromosomes No.7 and No.8.which have no visible evidence of sex chromosome dimorphism.Through karyotype analysis of Sana temporaria in Europe and Hashima-frog in Northeast China,it is quite clear that the latter is not a subspecies of the former.The Hashima-frog named by Pope and Boring (1940) as Rana temporaria ehensinemsis is therefore not appropriate.It is suggested that its name should tentatively be called Hashima-frog in order to avoid furthur confusion.
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