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红螯螯虾是原产于澳大利亚的大型经济虾类,经引种养殖试验证明很有推广价值。为推广该虾在我国的养殖,我们经几年的试验研究掌握了其繁殖习性和苗种培育技术。1 红螯螯虾的繁殖技术1.1繁殖习性 红螯螯虾雌雄异体,在正常情况下幼虾经180~240天饲养,达到性成熟,成熟后水温在20℃左右即可交配产卵,卵粒粘着在腹肢上进行孵化,抱卵孵化时间与温度有直接的关系。红螯螯虾卵粒较大,怀卵量与亲虾体重呈正相关,据报道,对体重为13~112g范围的个体,其线性关系方程为C=106+6.5W(R2=0.46)(C为抱卵数,W为体重)。孵化过程中有一部分卵不能正常
Chera’s red crayfish is a large-scale economic shrimp originating in Australia that has been shown to be very valuable in marketing by introduction of aquaculture. In order to promote the shrimp breeding in our country, we have mastered its breeding habits and seed breeding techniques after several years of experimental research. 1 Red Crayfish breeding technology 1.1 Breeding habits Cerciche shrimp dioecious, under normal circumstances juvenile 180 ~ 240 days of feeding, reaching sexual maturity, the water temperature at about 20 ℃ after mating to spawn, eggs Adhesion in the abdomen on the hatch, hold the hatching time and temperature have a direct relationship. Larval eggs and the number of fecundity were positively correlated with the body weight of broodstock, and the linear relationship equation was reported to be C = 106 + 6.5W (R2 = 0.46) for individuals weighing 13 to 112 g (C To hold the number of eggs, W is the weight). Some eggs in hatching process can not be normal