在池塘中养殖的河蟹往往由于某种或多种原因,引起死亡或全部死亡,给养殖者造成较大的经济损失。为此,笔者通过调查和查阅有关资料,综述河蟹死亡的原因,供水产同仁参考,以便采取有效措施。 1.蟹种来源不当。目前各地用作蟹种的有长江幼蟹、瓯江幼蟹、珠江幼蟹、辽河幼蟹、闽江幼蟹,各水系蟹种都有水域适应性和差异性。如辽河幼蟹在长江流域养殖较长江幼蟹提早开食,提早性成熟,由 Crabs cultured in ponds often cause death or death for any one or more reasons, causing great economic losses to farmers. To this end, the author through the investigation and access to relevant information, summarize the causes of crab death, water supply colleagues for reference, in order to take effective measures. 1. crab species from improper sources. Currently used as a crab species across the Yangtze River larvae, Oujiang larvae, Zhujiang larvae, Liaohe crabs, Minjiang crabs, water crab species have water adaptability and diversity. Such as Liaohe larvae in the Yangtze River farmed Yangtze River larvae to eat earlier, early maturity, from