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五种棺头蟋核型的比较研究
引用本文:尤平,郑哲民.五种棺头蟋核型的比较研究[J].昆虫学报,2001,44(1):40-45.
作者姓名:尤平  郑哲民
作者单位:1. 淮北煤炭师范学院生物系,
2. 陕西师范大学动物研究所,
摘    要:报道了中国5种棺头蟋的核型:石首棺头蟋Loxoblemmus equestris, 2n=17, XO();小棺头蟋L. aomoriensis, 2n=11, XO(); 哈尼棺头蟋L. haani, 2n=11, XO();多伊棺头蟋L. doenitzi, 2n=11, XO()和窃棺头蟋L. detectus, 2n=11,XO()。并应用核型似近系数及进化距离对这5种蟋蟀作了聚类分析,得出5种蟋蟀的演化方向为石首棺头蟋→小棺头蟋→哈尼棺头蟋→多伊棺头蟋→窃棺头蟋。

关 键 词:棺头蟋属  核型似近系数  进化距离  
文章编号:0454-6296(2001)01-0040-06
修稿时间:1998年8月10日

Comparative study of karyotypes in five Loxoblemmus species
YOU Ping,ZHENG Zhe-min.Comparative study of karyotypes in five Loxoblemmus species[J].Acta Entomologica Sinica,2001,44(1):40-45.
Authors:YOU Ping  ZHENG Zhe-min
Abstract:This is a report on the karyotypes of the five Loxoblemmus species in China. The chromosomal number of the five Loxoblemmus'diploid male varied between 11~17 with XO sex mechanism. Among these five species, L.aomoriensis, L.haani, L.doenitzi and L.detectus contained 5 pairs of autosomes and 1 X-chromosome while L.equestris contained 8 pairs of autosomes and 1 Xchromosome. According to the cluster analysis of the karyotype resemblancenear coefficients and evolutionary distance among the five crickets, the authors draw the conclusion that the evolutionary trend of the five crickets would be L.equestris→L.aomoriensis→L.haani→L.doenitzi→L.detectus.
Keywords:Loxoblemmus  karyotype resemblance\|near coefficient  evolutionary distance
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