中国科学院水生生物研究所的科研人员在研究中发现,用黑龙江省方正县三倍体雌核发育的银鲫与兴国红鲤杂交产生的子一代,具有明显的杂交优势.经鉴定,这种杂交鱼被命名为异育银鲫.它的生长速度比母本方正银鲫快34%以上,比南方本地鲫快2倍;各种营养成分均和本地鲫相近.仅空壳部分较大而含肉率略少.因长势快、生长周期短,当年苗能上 Researchers at the Institute of Hydrobiology, Chinese Academy of Sciences, found in the study that there was a clear heterosis in hybrid progeny derived from crossbreeding of silver gruel and Xingguo red carp with triploid gynogenetic nuclei in Founder County, Heilongjiang Province. The fish was named Allogynogenetic crucian carp and its growth rate was more than 34% faster than that of the female parent Ficus carpio and twice as fast as that of the native crucian carp in the South China. All nutrients were similar to the native crucian carp Flesh rate slightly less because of fast growth, short growth cycle, when the Miao energy