岩虫室内养殖的初步研究

为推动岩虫Marphysa sanguinea室内养殖,采用体质量为(6.26±1.68)g的岩虫进行了人工养殖方法(铺沙水槽和塑料箱)、养殖密度(50~250条/m~2)和饲料配方选择(藻粉、鱼粉和虾粉)的研究。结果表明:采用悬挂式养殖方法的养殖效果较好,养殖30 d后岩虫的成活率为88.6%;经过60 d的养殖,50、100条/m~2密度组岩虫的成活率为86.7%,与150、200、250条/m~2密度组有显著性差异(P0.05),113~125条/m~2(705~750 g/m~2)是比较适合的岩虫室内人工养殖密度;饲料中添加动物蛋白30%~70%或投喂新鲜卤虫可以满足岩虫的生长要求。本研究结果可为岩虫的人工促熟及增养殖提供基础数据。

Indoor culture of rock-worm Marphysa sanguinea

In this study, effects of culture method (in a bottom-covered with sand tank and a plastic net), stock-ing density (50-250 ind. / m2 ), and food type (Sargassum thunbergii meal, Sargassum sp. meal, kelp Laminaria japonica meal, fish meal and shrimp meal) on growth and survival of rock-worm Marphysa sanguinea with average body weight of (6. 26±1. 68)g were studied to optimize the conditions of artificial breeding and culture. The results showed that a plastic net suspanded breeding method had better growth and high survival rate of 88. 6% in 30 day culture. The survival rate of 86. 7% was observed at stocking density of 50 ind. / m2 and 100 ind. / m2 , significant different from those at stocking density of 150, 200 and 250 ind. / m2 in 60 day culture(P<0. 05),with the suitable stocking density from 113 ind. / m2 to 125 ind. / m2 (705 -750 g / m2 ) for artificial breeding. The diet containing 30% -70% of animal protein or fresh Artemia met the requirements of rock-worm for growth. The findings will pro-vide the basic data supporting for artificial induction of maturity and aquaculture of rock-worm.