宝兴泛树蛙不同地理居群的染色体多样性

本文分析了比较了宝兴泛树蛙四个地理居群的核型，Ｃ－带和Ａｇ－ＮＯＲｓ，结果表明它们有相同的２ｎ＝２６，ＮＦ＝５２，和相同的核型模式：５＋８。但是，它们彼此之间在ＳＭ数目和顺序，次缢痕或随体的位置以及银染的位置，Ｃ－带类型都有所不同。

CHROMOSOME DIVERSITY OF DIFFERENT GEOGRAPHICAL POPULATIONS OF THE TREE FROG POLYPEDATES DUGRITEI

The karyotypes, C-bands and Ag-NORs of four populations of Polypedates dugritei from different geographical regions were compared. They have the same 2n=26 and 5 + 8 karyotypic formulae, but some dissimilarities were found among them. First, the number and Sequence of submetacentric chromosome were different among them, and then the sec- ondary contriction (SC) or satellite (Sat. ), Ag-NORs and C-band were also different. Nos. 2, 3, 6, 9, are SM,SC and Ag-NORs on 12q inter for Puxiong population;Nos. 2, 3, 4 , 7, 8, 9 are SM, Sat. and Ag-NORs on 12q ter for Mount Omei population ; Nos. 2, 4, 7, 8, 13 are SM, SC and Ag-NORs on 10q inter for Lichuan population. In Jingdong population Nos. 2,3 are SM only, Sat. and Ag-NORs are on 12q ter; besides the C-type C-bands, it has several ter-type and inter-type C-bands. These karyotypic and banding differences a- mong them probably resulted from the inversion and reciprocal transposition of heterochro- matins. The importance of cytogeography research is discussed.