福建九龙棘蛙和小棘蛙的核型和Ag－NORs研究  

STUDY ON KARYOTYPES AND Ag-NORs OF TWO PAA SPECIES FROM FUJIAN PROVINCE

作　　者：李树深[1] 胡健生[1] 

机构地区：[1]云南大学生物系

出　　处：《动物学杂志》1995年第5期11-14,共4页Chinese Journal of Zoology

基　　金：昆明动物研究所细胞和分子进化研究开放实验室资助

摘　　要：福建两种棘蛙的核型和Ａｇ－ＮＯＲｓ观察结果如下：九龙棘蛙，２ｎ＝２６（２２Ｍ＋４ＳＭ），ＮＦ＝５２，５＋８模式，Ａｇ－ＮＯＲｓ位于６ｐｉｎｔｅｒ，小棘蛙，２ｎ＝２６（２０Ｍ＋６ＳＭ），ＮＦ＝５２，５＋８模式，次缢痕和Ａｇ－ＮＯＲｓ在６ｐｉｎｔｅｒ。二者均未发现与性别分化相关的异形染色体。根据已知棘蛙属内的核型资料，对该属种间和居群间的核型演化机制进行了讨论。Karytypes and Ag-NORs of two species in genus Paa from Fujian Province were investigated and analysed.The results showed that Paa jiulongensis have Zn=26(22M+4SM) and P.exilispinosa Zn=26(20M+6SM).Both the two species have NF=52,5+8 karyotypic formula and Ag-NORs on 6 p￣(inter) in common.No heteromorphic sex chromosomes were found in both species.

关 键 词：棘蛙 九龙棘蛙 小棘蛙 染色体组型 AG-NORS 

分 类 号：Q959.530.3[生物学—动物学]