几种天然饵料对泥东风螺稚螺生长、存活的影响

Influence on growth and survival of Babylonia lutosa juveniles fed with several natural diets

本文报道了用单因素实验方法进行泥东风螺(Babylonia lutosa)稚螺适宜饵料的研究。以太平洋牡蛎、远海梭子蟹、竹筴鱼、南美白对虾和卤虫幼体为饵料,以及上述饵料每日一种轮流投喂的方式,组成6个实验组;实验水温28～28.5℃,经30 d的投喂实验,结果表明:体长、体重、日均增长量和日均增长率以及存活率等综合指标,单种饵料投喂以太平洋牡蛎组效果最好,远海梭子蟹组次之;竹筴鱼组的存活率高于南美白对虾组,其他指标接近;卤虫最低,而混合投喂组,综合指标在全部实验组中位列第二。方差分析表明,投喂不同天然饵料泥东风螺稚螺的生长速度差异极显著(P<0.01)

In this paper, we used one - factor experimental method to research the optimum diets for Babylonia lutosa juveniles. We used Crassostrea gigas, Portunus pelagicus, Trachurus japonicas ; Penaeus vannamei and the larva of Artemia salina as different diets for six experimental groups in a way of feeding in turn each day. In our experiment the water temperature was 28 - 28.5 ℃. After 30 days of feeding experiment, the results of the body - length, weight, and growth of each day, growth rate of each day and survival rate showed that the feeding effect of Crassostrea gigas was the best and Portunus pelagicus was the second. In survival rate, the group fed with Trachurus japonicas was higher than that of Penaeus vannamei group. The group fed with larva of Artemia salina was the lowest survival rate while other parameter index were comparatively close. The com- prehensive parameter index of Babylonia lutosa juveniles fed with 5 different diets mixed together was the sec- ond in all experimental groups. The results of One Way Analysis of Variance indicated that different diets had significant influence on the growth speed of Babylonia lutosa （P 〈0. 01 ）.