| 红螯螯虾的室内人工育苗 |
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| 引用本文： | 顾志敏.红螯螯虾的室内人工育苗[J].水产学报,2003,27(1):32-37. |
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| 作者姓名： | 顾志敏 |
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| 作者单位： | 浙江省淡水水产研究所,浙江,湖州,313001 |
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| 基金项目： | 浙江省"九五"重点科研项目(961102162) |
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| 摘 要： | 于1996-1998年,在浙北地区,对澳大利亚引进的红螯螯是进行亲虾培育、人工越冬,怀卵孵化,室内人工育苗技术的研究。研究表明,在浙北地区,2.8-4.9g的幼虾经5个月左右的饲养可以达到性成熟并部分怀卵,利用电厂余热水水泥池人工越冬的成活率可达70%以上。越冬后亲是在水温20℃以上即开始交配怀卵,怀卵盛期4-6月。红螯螯虾一年可产卵4次,但只有第一、二次怀卵可用于育苗生产,个体一次怀卵量较少,一般为400-500粒,但群体怀卵比率较高。试验还表明,红螯螯虾出膜幼体即呈幼虾状,需依附母体7-10d后才营独立生活并开口摄食外源性饵料,所研制的幼虾Ⅰ号饲料为红螯螯虾室内人工育苗较好的开口饲料。室内人工育苗成活率可达60%以上。
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| 关 键 词： | 红螯螯虾 室内人工育苗 越冬培育 怀卵 |
| 文章编号： | 1000-0615(2003)01-0032-06 |
| 收稿时间： | 2014/3/20 0:00:00 |
| 修稿时间： | 2002年4月17日 |
Indoor artificial breeding and juvenile nursing of Cherax quadricarinatus |
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| GU Zhi min.Indoor artificial breeding and juvenile nursing of Cherax quadricarinatus[J].Journal of Fisheries of China,2003,27(1):32-37. |
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| Authors: | GU Zhi min |
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| Institution: | Freshwater Fishery Institute of Zhejiang,Huzhou313001,China |
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| Abstract: | Studies on culture of parent crayf ish, winter rearing, hatching and indoor artificial breeding of the red
crayfish ( Cherax quadricarinatus ) were carried out from 1996 to 1998 in the northern region of Zhejiang
Province. Results showed that the red crayfish is appropriate for farming and breeding in Zhejiang Province. In
the northern region of Zhejiang Province, the juvenile crayfish ( sizes of 2. 8- 4. 9g) can grow to sexual maturity
and the survival rate in pond was over 70% during the winter seasons because of warm water supply from a local
power plant. In February, when the water temperature went up to 20 .. , the parent red crayf ish began to
copulate and breed, but the epacme were observed in April to June. The red crayfish can spawn four times a
year, but only the first and the second hatches are useful for juvenile nursing purpose. A female brood normally
ovulate 400- 500 eggs, but the spawning rate of the population in a pond is commonly high. The red crayfish
develops from fertilized egg to juveniles directly, which is quite different from crabs and shrimps. The hatch need
stay on the pleopod of the female brood for 7 to 10 days, and then begin to leave and live on extraneous foods.
The juveniles do not need live food absolutely. A formulated feed has been developed successfully for nursery
stage juvenile. Temperature regulation and intensive management during the indoor nursery stage are very
important for juvenile nursing success, and the survival rate can reach up to 60%. |
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| Keywords: | Cherax quadricarinatus artificial breeding and juvenile nursing winter rearing brood |
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