生存密度和饵料对中国明对虾(Fenneropenaeus chinensis)争胜行为和生长性能的影响

摘要

This study was aimed to investigate the effects of stocking density and food on agonistic behavior and growth performance ofFenneropenaeus chinensis.Post larvas ofF.chinensis were used.Three stocking densities (300,600and 1200 ind/m2),two food types (living artemia,artificial food) and three food abundance (full food,less food and no food) were designed.Agonistic behavior were observed and recorded 1 hour before feeding,during feeding and 1 hour after feeding,body length and survival rate were determined once a week.The results showed that agonistic behavior of post larval increased and growth performance gradually decreased with increasing stocking density.Food types and abundance affected the agonistic behavior,growth and survival rate (P＜0.05).The results revealed that stocking density,food types and abundance influence the agonistic behavior of F.chinensis.It is helpful to improve larvas growth and survival rate with living artemia as food.%为探讨生存密度和饵料对中国明对虾(Fenneropenaeus chinensis)争胜行为和生长性能的影响,实验采用中国明对虾仔虾为材料,设置300尾/m2 (DL)、600尾/m2 (DA)、1200尾/m2 (DH)3个密度梯度,鲜活卤虫和人工配合饵料2种饵料及饱喂(FF)、少喂(LF)、不喂(NF)3个投喂丰度,测定中国明对虾的体长增长、存活率,以及投喂前、投喂时、投喂后对虾之间的争斗行为等指标.结果表明,仔虾间的争胜行为随生存密度的升高而增加,生长和存活率逐渐降低;饵料种类和丰度能显著影响中国明对虾的争胜行为和生长性能(P＜0.05).结果显示,生存密度、饵料种类及丰度会影响中国明对虾的争胜行为,投喂鲜活饵料有利于提高存活率和生长速度.