摘要
笔者于１９８９年５月至１９９０年７月对浙江沿海的泥螺生态进行了详细观察，结果表明：泥螺广布于浙江大陆沿岸到沿海岛屿的泥沙滩上，以中低潮带为多；成螺生存温度－１．５～３３℃，以１０－３０℃范围内较适，比重适宜范围在１．０２０以下，生存ｐＨ值范围３．７４－９．０９。以７．１３～８．０１为最适；春季耐干露能力较强，夏季较弱，死亡时的体重消耗率平均为６９％左右。泥螺营匍匐生活，依靠齿舌舐取滩涂表面的食物，饵料以底栖硅藻及腐植质为主，对种类没有明显的选择性。
From May, 1989 to July,1990,We had acquired detailed knowledge of the life habit of Bullacta exarata in Zhejian coast.According to the preliminarystudy ,it is widely distributed in the sand-mud beaches along the coast to theoffshore islands of Zhejian ,its habitat selection is in the Mid-Low intertidalzone. The temperature suitable for its existence is-1.5-33℃,and cardinaltemperature 10-30℃. The highest of sea specific gravity for existence is 1.020.In the sea water pH value is from 3.74 to 9. 09 for its existence,whilethe cardinal pH value is 7.13-8.01.The tolerable ability of exposure to driness is greater in sping than in summer.On an average,the rate of the bedy weight loss at death is about 69 percent.It is a benthos feeder ,nd creeping in the sand-mud beach .The benthic diaton and humus is full in the stomach,and it has no clear selective feeding.
关键词
螺
泥螺
生态学
养殖
Bullacta exarata,Ecological habit
