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近年来随着河蟹养殖业的兴起,蟹苗的需求量越来越大。天然蟹苗在北方沿海几乎绝迹,人工培育蟹苗势在必行。而人工培育蟹苗所用的亲蟹,仅仅依靠春季在沿海捕捉.无论在数量上还是质量上都难以保证育苗需要。这主要是上年秋季降河入海的亲蟹寥寥无几,难以形成资源。为此.1992年秋冬季我们进行了亲蟹室内越冬试验研究。方法是在秋季河蟹性腺成熟时,将捕捉的雌雄亲蟹一起放入育苗室水泥池中,为之提供适宜环境使亲蟹交配、产卵及胚眙发育,经越冬后供来
In recent years, with the rise of crab farming, the demand for crab seed is getting bigger and bigger. Natural crabs almost disappeared in the northern coast, artificial cultivation of crab is imperative. The artificial crab used to cultivate the crab, relying solely on the spring capture in the sea, both in quantity and quality are difficult to ensure nursery needs. This is mainly due to the fact that a few crabs entering the sea in the autumn of last year rarely formed resources. To this end in autumn and winter of 1992, we conducted a crab indoor winter experiment. The method is that when the gonads of crabs and crabs mature in autumn, the captured male and female crabs are put into a cement pool of a nursery room to provide suitable environment for copulation, spawning and embryo development of the crabs,