上海海洋大学学报2024，Vol.33Issue(3)：615-622,8.DOI:10.12024/jsou.20230804297
折叠萝卜螺卵粒孵化时间及不同饵料对仔螺生长的影响
Study of egg hatching time for snail Radix plicatula and effects of different diets on growth performance to juvenile snails
摘要
Abstract
In order to study the egg hatching time and the effects of lettuce leaves,aquatic periphyton,artificial pellets,as well as their partial combinations on growth performance to the juvenile snails Radix plicatula,a subset of 10 newly laid egg masses were collected and their hatching time were record under indoor conditions.In addition,the shell length,shell width,body weight and survival rate for the juvenile snails feeding with different diets were analyzed.The results showed that the egg hatching time was 6.0-7.5 days with a 96.37％hatching rate when the water temperature ranged from 25.0 ℃ to 32.5 ℃.There was no significant difference in the survival rate for the 0-5 week old snails feeding with different diets,however,significant difference in the growth performance was found among the snail in different diet groups.The growth rate for 0-2 weeks old snails feeding with lettuce+aquatic periphyton was the fastest,followed by the snails feeding with aquatic periphyton.The growth rate for 3-5 weeks old snails with an initial body mass of 0.005 g feeding with lettuce+artificial pellets was greater than that feeding with lettuce or artificial pellets.Furthermore,no significant differences were found between the 3-5 weeks old snails with an initial body mass of 0.026 g fed by lettuce or lettuce+artificial pellets for their shell height,shell width and body mass.The results indicated that the R.plicatula egg hatching time is 6.0-7.5 days with a mean hatching rate of 96.37％with the water temperature ranging from 25.0 ℃ to 32.5 ℃.Aquatic periphyton and the leaves of lettuce are ideal food sources for 0-2 weeks old and 3-5 weeks old R.plicatula,respectively,and artificial pellets have a promoting effect on the growth of juvenile snails.The results of this study will provide a basis for large-scale production of R.plicatula.关键词
折叠萝卜螺/孵粒孵化/饵料开发/生长/成活率Key words
Radix plicatula/egg hatching/diet developing/growth/survival rate分类
农业科技引用本文复制引用
王帅兵,熊良伟,曹又文,宋扬,王海华,刘波..折叠萝卜螺卵粒孵化时间及不同饵料对仔螺生长的影响[J].上海海洋大学学报,2024,33(3):615-622,8.基金项目
江苏省"青蓝工程"项目(苏教师函数[2023]27号) （苏教师函数[2023]27号）
江西省重点研发计划项目(20212BBG73040) （20212BBG73040）
2023年泰州市科技支撑计划(农业)项目(TN202303) （农业）
江苏农牧科技职业学院横向科研项目(S20220124) （S20220124）
