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一异育银鲫的特征异育银鲫是中国科学院水生生物研究所以黑龙江省方正县双风水库银鲫为母本,江西省兴国红鲤为父本,进行人工授精后产生的三倍体子代。受精过程中,鲤鱼精子虽也进入银鲫鱼卵,但不与卵核融合,胚胎即由卵核单独分裂发育而成,因此子代不会发生分离,且全部是雌性个体。异育银鲫的外形与鲫鱼十分相似,但侧线鳞较鲫鱼多,一般为30—32个,鲫鱼侧线鳞一般为28—29个;异育银鲫体型较高,体高一般为体长的45％左右,而鲫鱼一般仅为体长的40％;异育银鲫血球比鲫鱼大,染色体为162个左右,而鲫鱼为100个。
An allogynogenetic crucian carp characteristics Allogynogenetic crucian carp is a Chinese Academy of Sciences Institute of Hydrobiology, Founder County, Heilongjiang Province, Shuangfeng reservoir silver carp as the female parent, Jiangxi Province, Xingguo red carp as a male parent after artificial insemination triploid child generation. During fertilization, although carp sperm also enter silver crucian carp eggs but do not fuse with egg nuclei, embryos are formed by separate development of egg nuclei. Therefore, segregation will not occur in offspring and all are female individuals. The appearance of allogynogenetic crucian carp is very similar to that of crucian carp, but the lateral line scale is more than that of crucian carp, usually 30-32, and the lateral line scales of crucian carp are generally 28-29. The body size of allogynogenetic crucian carp is generally 45 %, While the crucian carp generally only 40% of the body length; allogynogenetic crucian carp larger than the crucian carp, the chromosome is about 162, while the crucian carp is 100.