文章摘要
楼允东,宋天复,正逸妹,魏华,邬梅初,徐惠明,王志强.异育银鲫性别控制的研究[J].水产学报,1994,18(3):169~176
异育银鲫性别控制的研究
STUDIES ON SEX CONTROL IN ALLOGYNOGENETIC CRUCIAN CARP
投稿时间:1993-09-03  修订日期:1993-01-01
DOI:
中文关键词: 异育银鲫  中性不育鱼  17α-甲基睾酮  性别控制  放射免疫测定
英文关键词: allogynogenetic crucian carp  sterile fish  17a-methyltestosterone  sex control  radioimmunoassav (RIA)
基金项目:
作者单位
楼允东 上海水产大学, 200090 
宋天复 上海水产大学, 200090 
正逸妹 上海水产大学, 200090 
魏华 上海水产大学, 200090 
邬梅初 上海市宝山区水产技术推广站,201900 
徐惠明 上海市宝山区水产技术推广站,201900 
王志强 上海市宝山区水产技术推广站,201900 
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中文摘要:
      用含400和800ppm17α-甲基睾酮的饲料投饲孵化后3天的异育银鲫仔鱼45天,再用无激素的饲料饲养1年,结果获得了一批性腺呈细线状、难辨雌雄的中性不育鱼.经随机解剖测定,中性不育鱼的比例分别是对照组的3.71和3.40倍;与对照组比较,试验组的平均体重分别增长16%和11%;平均性腺系数分别降低45.5%和24.5%;平均出肉率分别增长6.5%和5.0%.切片观察未发现中性鱼的性腺内有生殖细胞.试验表明,用400和800ppm的甲基睾酮都能导致雄激素阉割而产生中性不育鱼,以前者效果更好.经放射免疫测定,发现试验鱼血清和肌肉中的睾酮含量与对照组无显著差异.
英文摘要:
      The effect of feeding 17a-methyltestosterone(400 and 800ppm)over a period of 45 days,starting with 3-day-old fry,or. growth and gonadal developme. of allogynogenetic crucian carp was investigated. After the treatment, the tested fish was reared with hormone-free diet for one year. The experimental results are as folhws:Oral administration of 17a-MT at 400 and 800 ppm resulted in a high percentage of sterile fish. The ratio of sterile fish was 3.71 times and 3.40 times as high as control group. In comparison with the control group,the mean body weight in two experimental groups increased by 16%and 11%,respectively. The mean gonadosomatic index decreased by 45.5%and 24.500,and the mean percentage of dress-out increased by 6.5%and 5.0 %,respectively. Any germ cells were not been found in the thread-like gonad of sterile fish. The results suggest that oral administration of 17a methyltestosterone at 400 ppm and 800 ppm to allogynogenetic crucian carp fry would result in androgenic castration and production of sterile fish,especially at the 400 ppm. The level of testosterone in serum and muscle of two experimental groups had no significant difference with control group,indicating the hormone-treated fish do not contain any residual hormones and they are quite safe for humanconsumption.
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