论文部分内容阅读
指甲履螺(Crepidula onyx)是属于帆螺科的腹足类软体动物,原产于美国加尼福利亚沿海,附着生活在牡蛎壳上,是牡蛎养殖场的污损生物之一。这种螺外表呈黄棕色、似笼贝,雌雄同体,雄性先熟,即小的个体为雄性,长大后的个体转变为雌性。经常几个或10多个互相重叠附着、成串群居,即大的、雌性的老个体在底部,性转变的个体居中,小的雄性个体附着在最上层。大个体终生附着,从不移动,营滤食生活。
Crepidula onyx is a gastropod mollusk belonging to the family Piranha, native to the coast of the Gulf of California in the United States and attached to oyster shells. It is one of the fouling organisms in oyster farms. This spiral appearance of the yellow-brown, like cage, hermaphrodite, male first cooked, that is, a small individual male, grown-up individual into a female. Often several or more than 10 are overlapping with each other, clustered in groups, that is, large, female, old individuals are at the bottom, sexually transformed individuals are centered, and small male individuals are attached to the top. Life-long attachment of large individuals, never move, Camp filter food life.