中国四个盐湖卤虫品系的核型研究

Study on the Karyotypes of Four Artemia Strains From Salt Lakes in China

摘要: 本文以气干法，对中国4个盐湖卤虫品系的核型进行了研究。研究结果表明：各盐湖卤虫染色体基数均为n＝21。两性生殖卤虫均为二倍体，其核型为2n＝16m＋10sm＋4st＋10t＋Z(st)W(m)／Z(st)Z(st)，NF＝74。孤雌生殖卤虫存在二、四、五倍体个体。其二倍体核型为：2n＝14m＋4sm＋4st＋18t＋Z(st)W(sm)，NF＝66。

Abstract: The karyotypes of four Artemia strains from salt lakes in China were studied by air-dried technique.The basic number of chromosome are n=21 in all Artemia strains.He bisexual strains from Yuncheng salt lake and Hangjinqi salt lake are diploid,and the karyotype is:2n=16m+10sm+4st+10t+Z(st)W(m)/Z(st)Z(st),NF=74.There are diploid and tetraploid Artemia in partheno-genetic strains from Aibi lake and Balikun lake,there are also pentaploid Artemia in Balikun salt lake.The diploid karyotype of the two parthenogenetic strains is:2n=14m+4sm+4st+18t+Z(st)W(sm),NF=66.