新线虫属三个种的核型比较研究(小杆目:斯氏线虫科)  

COMPARATIVE STUDIES ON THE KARYOTYPES OF THREE SPECIES OF NEMATODES IN THE GENUS NEOAPLECTANA

作　　者：王国汉[1] 罗俊烈[2] 王正询[2] 

机构地区：[1]华南农业大学植保系 [2]广州师范学院生物系

出　　处：《Zoological Research》1989年第1期71-77,共7页动物学研究（英文）

摘　　要：以格氏线虫(NC513,85011)、苹果蠢蛾线虫(DD-136)及毛蚊线虫的幼胚、精巢及卵巢为材料,用地衣红染色,压片法制片,其染色体组型进行了研究。结果表明,三种线虫的染色体数目均为雌性2n=10,雄性2n=9。但它们的核型并不一致,可概括为以下公式: 格氏线虫(NC513,85011):2n=4m+6t(),2n=4m+5t() 苹果蠢蛾线虫(DD-136):2n=8m+2t(),2n=7m+2t() 毛蚊线虫 :2n=6m+4t(),2n=5m+4t() 此外,本文还讨论了三种线虫的亲缘关系。This paper presents comparative studies of the karyotypes of three species of Neoapleclana nematodes. The karyotypes of the gonadal cells and the embryonic cells of N. glaseri (NC513, 85011), N, carpocapsae (DD-136) and N. bibionis were studied. Slides were made by the squash technique with orcein staining. The results obtained from this study indicate that three species of nematodes show a 2N condition of nine chromosomes for the males, ten for the females, but they are different in karyotypes from one species to another. (The karyotype formulae. ) N. glaseri(NC513, 85011) 2n = 4 m + 6t(♀) 2n = 4m+ 5t((?)) N .carpocapsae (DD-136) 2n= 8m+ 2t(♀) 2n= 7m+2t((?)) N.bibionis 2n=6m+4t(♀) 2 n= 5 m + 4 t((?)) In the last part of this paper, we compared and analyzed the karyotypes of three species and discussed the evolutionary relationship of their karyotypes.

关 键 词：线虫属 染色体组型 小杆目 

分 类 号：Q959.172.1[生物学—动物学]