不同温度、底质和饵料对管角螺孵化和稚、幼螺生长的影响  

Effects of temperature,sediment and food on hatching and growth of juvenile,young Hemifusus tuba

作　　者：陆珠润[1] 蒋霞敏[1] 段雪梅[1] 王春琳[1] 

机构地区：[1]宁波大学应用海洋生物技术教育部重点实验室,浙江宁波315211

出　　处：《南方水产》2009年第3期10-14,共5页South China Fisheries Science

基　　金：国家教育部长江学者和创新团队发展计划项目(IRT0734)

摘　　要：通过单因子试验,研究了不同温度、底质和饵料对管角螺Hemifusus tuba孵化和稚、幼螺生长的影响。温度试验结果表明,29℃组卵囊平均出稚螺数为15.07ind.卵囊-1,显著高于23℃组(13.3ind.卵囊-1)和26℃组(12.87ind.卵囊-1);29℃组孵化时间为30d,26℃组为40d,23℃组为35d;23℃组最后存活率达到66.7%,29℃组只有36.37%;26℃组初孵稚螺的壳高为6.33±0.34mm,显著高于23℃和29℃组,但经培养后,23℃和26℃组的幼螺壳高无显著差异,分别为17.59±2.22和16.66±1.80mm,综合考虑23℃为较适孵化温度。底质试验结果表明,初孵稚螺无底质培养比泥底质培养佳,幼螺沙底质培养比无底质培养佳;饵料试验结果表明,投喂鲜活饵料优于配合饲料。Effects of different temperature, sediment and food on hatching and growth of Hemifusus tuba were studied using single-factor test. The results were as follows： the average number of juvenile individuals attained 15.07 ind .oocyst^-1, significantly more than that of 23℃ （ 13.3 ind-oocyst^-1 ） and 26℃ （ 12.87 ind.oocyst^-1 ）. The incubation time was 30 d at 29℃, 40 d at 26℃ and 35 d at 23℃. The survival rate reached 66. 7% at 23℃ and 36. 37% at 29℃. The shell height of juvenile individuals was 6. 33 ±0. 34 mm at 26℃ , significantly higher than that of 23℃ and 29℃. After cultivation, there was no significant difference between 23℃ （ 17.59± 2. 22 mm） and 26℃ （ 16. 66 ± 1.80 mm） , so 23℃ was considered to be the suitable incubation temperature. The cultivation condition without sediment was better than that with sediment for newly-hatched juvenile individuals. However, the cultivation condition with sediment was better than that without sediment for young ones; alive living food was better than formula food.

关 键 词：管角螺 温度 底质 饵料 

分 类 号：S968.319[农业科学—水产养殖]