海洋科学2023，Vol.47Issue(12)：55-62,8.DOI:10.11759/hykx20230405001
复合益生菌和底质深度对硬壳蛤育苗效果的影响
Effect of compound probiotics and substrate depth on the breeding of hard clam(Mercenaria mercenaria)
摘要
Abstract
The survival rates of Mercenaria mercenaria larvae and juveniles are key factors for the success of artificial breeding.In this study,we have explored the effects of compound probiotics and sediment depth on the specific growth,survival,and metamorphosis rate of larvae and juveniles.The results showed that after feeding S2 probiotics(Clostrid-ium butyric acid metabolites of lactic acid bacteria composite flora),the proportion of small individual hard shelled calm larvae decreased,and the growth rate and metamorphosis rate of larval significantly increased.S2 probiotics had signifi-cant effects on specific growth rates under different culture temperatures in larvae from different regions.The specific growth rate of larvae from Tianjin(25 ℃)was significantly higher than that of the control group(20 ℃),whereas no significant difference was detected between larvae from Fujian(25 ℃)and the control group(20 ℃).In addition,a 3-mm sediment depth significantly increased the growth rate,metamorphosis rate,and foot emergence rate of the larvae.The proportion of juveniles buried at 0-3 mm depth was significantly higher than that at 3-9 mm depth.Therefore.screening compound probiotics that promote the growth and development of clams and improve the survival rate and determining the best substrate depth suitable for the growth and development of clams further optimized the artificial seedling breeding technology,which is of great significance for the large-scale artificial seedling breeding of clams.关键词
硬壳蛤/益生菌/底质/育苗效果Key words
Mercenaria mercenaria/probiotics/substrate/breeding分类
农业科技引用本文复制引用
孟良,李华煜,王元宁,李金泽,李永仁,郭永军,张涛..复合益生菌和底质深度对硬壳蛤育苗效果的影响[J].海洋科学,2023,47(12):55-62,8.基金项目
由天津市科委项目(20YFZCSN00240) （20YFZCSN00240）
天津市农委项目(202103010) （202103010）
国家现代农业产业技术体系(CARS-49)[Tianjin Science and Technology Commission project,No.20YFZCSN00240 （CARS-49）
Tianjin Agricultural Committee Project,No.202103010 （）
the China Agriculture Research System of MOF and MARA,No.CARS-49] （）
