中文摘要：

采用人工授精法以奥利亚罗非鱼（Oreochromis aurea）为母本,鳜（Siniperca ahuasti）为父本,获得了能正常发育的后代.利用微量全血培养法对奥利亚罗非鱼、鳜及它们杂交后代的染色体数目和核型进行了分析,结果表明,奥利亚罗非鱼染色体数目为2n=44,核型公式为6sm＋24st＋14t,染色体臂数（NF）=50;鳜鱼为2n=48,核型公式为8sm＋4st＋36t,NF=56;杂交后代为2n=44,核型公式为6sm＋26st＋12t,NF=50.经对比分析,杂交后代与奥利亚罗非鱼的核型相似.

英文摘要：

The progenies of the distant hybridization between Oreochromis aurea （ ♀ ） and Siniperca ahuasti （ ♂ ） were successfully obtained through years of research. And their karyotypes were studied by half-micro blood lymphocytic cell cultivation. The result indicated that the diploid chromosome number of O. aurea （ ♀ ） was 2n =44, and karyotype formula was 6sm＋24st＋14t, arm number （NF） =50; the diploid chromosome number of S. chuatsi （ ♂ ） was 2n =48, and karyotype formula was 8sm＋4st＋36t, NF=56; the diploid chromosome number of their progenies was 2n =44, chromosome formula was 6sm＋26st＋12t, NF=50. The results showed the karyotypes between O. aurea （ ♀ ） and progenies were similar by comparison.