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罗氏沼虾又名马来西亚大虾、淡水长臂大虾,是近年来兴起养殖的一个水产优新品种。它以个体大、生长快、产量高、周期短、效益好而著称。目前,养殖罗氏沼虾已成为农村致富的又一好门路。现将罗氏沼虾亲虾的选购和运输技术介绍如下:1.罗氏沼虾亲虾的选购(1)雌雄亲虾的鉴别。雄性个体明显比同龄雌性大。雄虾第二对步足强大,呈蔚蓝色,其长度超过体长。头胸部较大,腹部较短,生殖孔开口于第五对步足的基部并形成小突起,第二对腹足内肢的内缘有一棒状的雄性附肢,第四、五对步足基部之间的距离较窄。
Macrobrachium, also known as Malaysian prawn, freshwater long-legged prawn, aquaculture is emerging in recent years, an aquaculture new varieties. It is individual, fast growth, high yield, short cycle, good efficiency and known. Currently, farming Macrobrachium has become another good way to get rich in the countryside. Now Macrobrachium rosenbergii purchasing and transport technology introduced as follows: 1. Macrobrachium rosenbergii purchasing (1) Identification of male and female broodstock. Male individuals were significantly larger than their females. The second pair of male shrimp foot step powerful, was blue, its length over body length. The head and chest are larger and the abdomen is shorter. The reproductive orifice is open to the base of the fifth pair of foot steps and forms a small protrusion. The second pair of gastropods has a stick-shaped male appendage on the inner edge. The fourth and fifth pair of foot bases The distance between the narrower.