Survival, growth and sterility of induced triploids in the cyprinid loach Misgurnus anguillicaudatus
Survival, growth and sterility of induced triploids in the cyprinid loach Misgurnus anguillicaudatus
复制标题
鲤科泥鳅诱导三倍体的存活、生长和不育
DOI：
10.2331/suisan.51.889
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发表时间：
1985
影响因子：
0.4
通讯作者：
T. Oshiro
中科院分区：
文献类型：
--
作者：
R. Suzuki;T. Nakanishi;T. Oshiro
采用冷激处理方法，对受精卵进行三倍体诱导，观察三倍体的存活、生长和不育性。在26°C下受精的卵，在受精后1°C处理1小时、4和5分钟，胚胎期的存活率与未处理的对照组几乎相同，但畸形苗的发生率比对照组高12%左右。在这些处理组中，84%的鱼是三倍体。然而，在受精后处理时间较长的组中，三倍体的发生率较低。三倍体个体红细胞的平均长轴是二倍体对照的1.2 ~ 1.3倍。三倍体在0岁饲养试验结束时的平均体重比二倍体小。然而，在11年的试验中，三倍体的体重大于对照。在0年和11年的实验中，三倍体的存活率与二倍体非常相似。雄性和雌性三倍体都完全不育。
Triploids were induced by means of cold shock treatment of eggs after fertilization in the loach Misgurnus anguillicaudatus, to examine their survival, growth and sterility. In eggs fertilized at 26°C and treated at 1°C for one h, 4 and 5 min after fertilization, survival rates at embryonic stage were almost the same as in the untreated controls, although rates of deformed fry were about 12% higher than the control. Fish in these treated groups were 84% triploids. However, lower rates of triploids were found in groups treated more minutes after fertilization.Mean major axes of erythrocytes of triploid individuals were 1.2 to 1.3 times larger than that of diploid controls. Mean body weights of triploids at the end of O-year-oldrearing experiment were small compared with those of the diploids. However, in l-year-old experiment, weights of triploids were greater than those of control. Survival rates of triploids in both O-year-and l-year-old experiments were very similar to those of diploids. Both male and female triploids were entirely sterile.