文章摘要
姜仁良,谭玉钧,罗清荣,李先才,严维辉,房亚萍,陈富宾.淡水白鲳人工繁殖的调控[J].水产学报,1994,18(4):278~283
淡水白鲳人工繁殖的调控
REGULATION OF ARTIFICIAL REPRODUCTION IN COLOSSOMA BROCHYPOMUM
投稿时间:1993-12-27  修订日期:1993-01-01
DOI:
中文关键词: 淡水白鲳  人工繁殖  有效积温  17β-雌二醇  睾酮
英文关键词: Colossoma brochypomum  artificial reproduction  effective accumulating temperature  17β-oestradiol  testosterone
基金项目:
作者单位
姜仁良 上海水产大学, 200090 
谭玉钧 上海水产大学, 200090 
罗清荣 上海水产大学, 200090 
李先才 南京水产良种场, 210039 
严维辉 南京水产良种场, 210039 
房亚萍 南京水产良种场, 210039 
陈富宾 南京水产良种场, 210039 
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中文摘要:
      本文对控制淡水白鲳有效积温和投饲量促进性腺成熟人工诱导春繁和秋繁作了研究.春繁平均水温23.3±1.1℃,雌、雄亲鱼有效积温分别达到3509.0±164.2和3786.7±81.8度·日,平均催产率为86.9%,比自然水温条件下,提前催产约1.5个月.秋繁平均水温28.1±2.0℃,雌、雄亲鱼有效积温分别为2008.8和2030.0度·日,平均催产率为93.2%;秋繁千克鱼饲料量小于春繁,但千克鱼日投饲量大于春繁.产卵前后血清中17β-E_2和T浓度测定表明,雌鱼血清中17β-E_2浓度在产卵后极显著降低(春季,P<0.01;秋季,P<0.001),经秋季培育后又再升高,表明17β-E_2的作用主要与卵黄发生有关,但与排卵的关系不大,而睾酮在产卵过程中,雌、雄鱼均有显著升高(P<0.001),这与排卵、排精有关.
英文摘要:
      The regulation of effective accumulating temperature and feeding amount for promoting gonad maturation during spring and autumn induced breeding were studied. When the water temperature was 23. 3±1. 1℃, the effective accumulating temperatures were up to 3509. 0±164. 2℃ and 3786. 7 ±81.8℃ ·d. of female and male spawners respectively. The average spawning rate was 86. 9%, and the spawning time was about one and a half months early than that of the induced spawning under the condition of natural water temperature.When the water temperature was at 28. 1 ± 2.0℃, the effective accumulating temperatures were 2008. 8℃ and 2030.0℃ ·d. in female and male fish respectively, and 93. 2% spawning rate was got. The feeding amount per kilogram body weight of fish during autumn breeding was low than that of the fish during spring breeding, but higher in daily feeding amount.Serum 17β-oestradiol (17β-E2) and testosterone (T) levels were measured before and after spawning. Serum 17β-E2 level showed highly significant decrease (spring, P<0. 01 and autumn, P<0. 001) in female after spawning. The serum 17β-E2 level increased when the spawned fish were recultured intensively. It suggested that the role of 17β-E2 was involved in vitellogenesis and less relationship with ovulation. The serum level of T in both female and male after spawning were highly significant increase (P<0. 001 ), and it showed in connection with ovulation and spermiation.
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