生物资源2025，Vol.47Issue(4)：341-348,8.DOI:10.14188/j.ajsh.20250102002
鄱阳湖宽体金线蛭繁殖性能及仔蛭活力研究
Reproductive performance and larval vitality of Whitmania pigra in Poyang Lake
摘要
Abstract
The expansion of artificial breeding for Whitmania pigra has accelerated significantly.As Poyang Lake serves as a critical source of breeding stock,investigating the reproductive performance of Whitmania pigra in this ecosys-tem is pivotal for optimizing germplasm resource utilization and advancing the sustainable development of commercial leech aquaculture.Therefore,the wild Whitmania pigras in Poyang Lake were artificially bred under indoor conditions.Parent leeches were categorized into three groups by body weight:large(15.40-20.17 g),medium(10.59-14.78 g),and small(5.27-9.22 g).The weight recovery rates of the parent leeches were calculated,the number of cocoons and larvae produced by each parent leech were counted,and larval vitality were measured to compare the reproductive perfor-mance of different specifications of Whitmania pigra.The results showed that the body weight of parent leeches in Poy-ang Lake decreased significantly after cocooning.The average cocoon production was(3.66±0.85)per leech.The aver-age number of hatchlings was(99.55±39.16)per leech.And the relative fecundity of the body weight was(7.59±2.01)tails/g.The difference in the average number and weight of cocoons laid by large-size and medium-size leeches were not significant,but both of them were significantly greater than those of small-size leeches(P<0.05).Under star-vation conditions,the survival rate of the newly hatched leeches was 100%at 14 days of age,and half of the death time occurred at 83 days of age.Survival activity index was 3 036.73.These findings demonstrate that wild Whitmania pigra from Poyang Lake has robust reproductive capabilities.关键词
宽体金线蛭/亲蛭/繁殖性能/仔蛭活力Key words
Whitmania pigra/parent leech/reproductive performance/larval vitality分类
农业科技引用本文复制引用
马本贺,谢文,李燕华,李涵,熊良伟,黄孝锋,王海华..鄱阳湖宽体金线蛭繁殖性能及仔蛭活力研究[J].生物资源,2025,47(4):341-348,8.基金项目
江西省重点研发计划(20212BBG73040) （20212BBG73040）
江西省名特优水产品产业技术体系(JXARS-15) （JXARS-15）
