| 暗纹东方鲀生殖洄游期性腺发育特点及人工繁殖的研究 |
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| 引用本文： | 华元渝,杨州,陈亚芬,钱林峰,王立新,顾美华.暗纹东方鲀生殖洄游期性腺发育特点及人工繁殖的研究[J].淡水渔业,1999(4). |
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| 作者姓名： | 华元渝 杨州 陈亚芬 钱林峰 王立新 顾美华 |
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| 作者单位： | 南京师范大学生物系，中国科学院南京地理与湖泊研究所，江苏省水产局 |
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| 摘 要： | １９９６～１９９８年，作者从长江下游扬中段采捕暗纹东方鱼屯亲鱼，经暂养促熟处理（微流水刺激、投喂鲜活饵料、不定期注射适量的ＬＨＲＨ－Ａ２），雌鱼的性腺可发育到Ⅳ期末，对外源激素能引起正常的排卵反应。同时观察了Ⅲ、Ⅳ、Ⅴ期性腺发育的特点。催产药物为ＬＨＲＨ－Ａ２和ＰＧ，三针注射，雌鱼剂量为３５ｍｇＰＧ＋６０μｇＬＨＲＨ－Ａ２／ｋｇ，雄鱼剂量减半。在水温１８～２２℃的条件下，效应时间为１０～３６小时；在２１～２２℃时，胚胎发育时间为１３９～２１０小时。１９９７～１９９８年的平均受精率为８３４％，平均孵化率为７８０％。
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| 关 键 词： | 暗纹东方鲀，性腺发育，人工繁殖，亲鱼培育，催情产卵 |
CHARACTERISTICS OF SEXUAL GONAD DEVELOPMENT AND ARTIFICIAL PROPAGATION OF
TAKIFUGU OBSCURUS |
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| Hua Yuanyu,Yang Zhou,Chen Yafen,Qian Linfeng,Wang Lixin and
Gu Meihua\=.CHARACTERISTICS OF SEXUAL GONAD DEVELOPMENT AND ARTIFICIAL PROPAGATION OF
TAKIFUGU OBSCURUS[J].Freshwater Fisheries,1999(4). |
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| Authors: | Hua Yuanyu Yang Zhou Chen Yafen Qian Linfeng Wang Lixin and
Gu Meihua\= |
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| Abstract: | Parent fish of
Takifugu obscurus were caught from the lower reaches of Yangzhong,Changjiang River in
19961998. After temporarily rearing and maturation inducement (by means of slowly runing
water, feeding of live food and irregular injection of LHRH-A\-2), the sexual gonad of the females
could developed to the last stage of and normal ovulation could be caused by extegeous
hormones. At the same time,the characteristics of sexual gonad development of \,\, stage were
described. The hormones adopted in the experiment were LHRH-A\-2 and PG, injected by three
times. The dosages for females were 3.5mg PG+60g LHRH-A\-2/kg, and half of the dosages for
males. The effective time was 1036 hours after the last injection under the water temperature of
1822. At 2122, the time of embryo development was 139210 hours. The average rates of
fertilization and incubation reached 83.4% and 78% respectively in 19971998. |
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| Keywords: | Takifugu obscurus Sexual gonad development Artificial propagation Broodstock cultivation Induced spawning |
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