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红螯螯虾又称淡水龙虾,俗称澳大利亚龙虾,原产于澳大利亚。其特点是个体大、食性杂、生长快、抗病力强,且肉质细嫩,但耐低温性差,养殖产量不高。1.人工繁殖(1)亲虾选择选择附肢完整,躯体光亮,活动力强,个体重75克左右的成虾,雌雄亲虾的性别比为2～3:1。(2)雌雄区分雌虾生殖孔在第三步足基部,雄性生殖突在第五步足基部;雄虾螫足粗大,前端有明亮、柔软的红色薄膜,雌虾螫足较小,一般无红色
Red crayfish, also known as freshwater lobster, commonly known as Australian lobster, native to Australia. It is characterized by large individuals, food miscellaneous, fast growth, disease resistance, and tender meat, but poor low temperature tolerance, farmed yield is not high. 1. Artificial reproduction (1) broodstock choose to choose complete appendages, body bright, strong activity, individuals weighing about 75 grams of shrimp, sex ratio of male and female broilers 2 ~ 3: 1. (2) male and female differentiate female reproductive glands in the third step foot base, the male reproductive process in the fifth step foot base; male shrimp feet thick, front with bright, soft red film, females smaller enough, generally no red