| 引用本文: | 何绪刚,龚世园,刘军,张训蒲.大水面日本沼虾(Macrobrachium nipponensis)资源人工增殖.湖泊科学,2002,14(4):377-380. DOI:10.18307/2002.0414 |
| HE Xugang,GONG Shiyuan,LIU Jun,ZHANG Xunpu.Studies on the Artificial Enhancement of Freshwater Shrimp Macrobrachium nipponensis in Inland Waters. J. Lake Sci.2002,14(4):377-380. DOI:10.18307/2002.0414 |
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| 摘要: |
| 挑选受精卵颜色呈褐色或接近褐色的抱卵虾,放入网箱多点布局孵化,直接放流孵出幼体是大水面日本沼虾资源增殖的有效方法.2001年,采用此法对湖北省阳新县网湖日水沼虾进行增殖,其产量从增殖前(2000年)的10000kg上升至35000kg,取得显著增殖效果,进箱孵化的抱卵数量(N,kg)可用计划生产量(Y,kg),总回捕率(R)及个体平均体重(W,g/ind)计算:N≥Y·(1000·R·W)-1. |
| 关键词: 日本沼虾 人工增殖 大水面 |
| DOI：10.18307/2002.0414 |
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| 基金项目:湖北省重点科技发展项目(95012X03) |
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| Studies on the Artificial Enhancement of Freshwater Shrimp Macrobrachium nipponensis in Inland Waters |
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HE Xugang, GONG Shiyuan, LIU Jun, ZHANG Xunpu
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Huazhong Agricultural University, Wuhan 430070, P.R.China
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| Abstract: |
| The artificial enhancement technique of freshwater shrimp Macrobrachium nipponensis, in inland waters was studied in 2000~2001, It could be concluded that to select the egg-carrying shrimps whose embryos arc brown or analogous brown to hatching in net-cages, and distributed evenly in the whole water, and then release directly the larvae into the whole water is an effective method.Through this method, the output of Macrobrachium nipponensis in Lake Wanghu situated in county Yangxin of Hubei Province has been increased obviously from 10000 kg, before artificial enahneement (in 2000), to 35000kg,after artificial enahneement (in 2001).The numbers (N,kg) of egg-carrying shrimps which are hatched in nct-cages could be calculated according to the formula: N≥2Y·(1000·R·W)-1,where R means the general recapture rate (normally, W(g/ind) meanvs mean body weight, and Y Ckg) means plan yield, seperately. |
| Key words: Macrobrachium nipponensis artificial enhancement inland waters |
