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

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.