摘要
中华鲎被IUCN列入"濒危"名录,进行鲎的人工培育并增殖放流是恢复鲎资源的有效途径,然而目前国内外尚未有适宜的幼鲎批量化生产培育技术.为探索幼鲎人工培育新方法,利用方斑东风螺养殖系统开展了中华鲎幼鲎生态养殖试验.结果显示,中华鲎幼鲎生态养殖模式显著提高了幼鲎成活率,并促进了幼鲎群体生长发育;经过9个月养殖,生态养殖池幼鲎90％以上个体达到3龄及以上,而单养池中幼鲎超过一半个体仍停滞在1龄;单养池和生态养殖池中螺的存活率和经济效益没有显著性差异.试验表明,中华鲎幼鲎生态养殖模式可有效促进幼鲎生长率并提高存活率,且不影响方斑东风螺养殖的经济效益.
Abstract
Tachypleus tridentatus is listed as the endangered(EN)on the IUCN Red List.Artificial breeding of horseshoe crabs and selection of suitable areas for multiplication and release are the effective way of restoring horseshoe crab resources.However,the survival rate of single species of juvenile hor-seshoe crabs is low.In order to explore new methods of improving the artificial breeding of juvenile horseshoe crabs,we carried out an ecological breeding experiment of juvenile T.tridentatus by using the Babylonia areolate breeding system.The results showed that the ecological breeding model of ju-venile T.tridentatus significantly improved the survival rate of juvenile horseshoe crabs and promoted the growth and development of the juvenile horseshoe crab population.After nine months of breeding,more than 90％of juvenile horseshoe crabs in ecological breeding ponds are three instars old and above while more than half of juvenile horseshoe crabs in monoculture ponds are still stagnant at one instar old.There was no significant difference in the survival rate and economic benefits of Babylonia areolate in monoculture ponds and ecological culture ponds.The experiments have shown that the ecological breeding model of juvenile T.tridentatus can effectively increase the growth rate and survival rate of juvenile horseshoe crabs without affecting the economic benefits of Babylonia areolate breeding.
基金项目
中央级公益性科研院所基本科研业务费专项中国水产科学研究院南海水产研究所项目(2019TS21)
南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0402)
NETL
NSTL
万方数据