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作 者 ：张清靖¹;李晓东²;朱华¹;刘胥²;李永函³

期 刊 ：应用生态学报 2007年 18卷 01期 页码：174-178

关键词：蟹；

摘 要 ：探讨了辽宁盘锦辽河三角洲地区中华绒螯蟹(Eriocheir sinensis)生态育苗池中出现的近亲真宽水蚤(Eurytemor affinis)和细巧华哲水蚤(Sinocalanus tenellus)与中华绒螯蟹幼体的关系.结果表明：近亲真宽水蚤和细巧华哲水蚤都严重地影响Ⅰ期中华绒螯蟹溞状幼体的成活率,其密度越大,Ⅰ期溞状幼体的成活率就越低(P＜0.01); Ⅲ期中华绒螯蟹溞状幼体可捕食桡足类无节幼体,且捕食量随着无节幼体密度增加而变大(P＜0.01);Ⅴ期中华绒螯蟹溞状幼体和大眼幼体容易捕食到近亲真宽水蚤而很难捕食到细巧华哲水蚤;蟹苗池中大眼幼体的产量与育苗初期池塘中桡足类的数量呈负相关关系,且不同桡足类密度下大眼幼体收获量差异极显著(P＜0.01).提出了控制和利用蟹苗池中桡足类的措施.

Abstract:The study on the relationships between two copepod species Eurytemor affinis and
Sinocalanus tenellus and Chinese mitten crab Eriocheir sinensis larvae in the ecological breeding ponds
of E. sinensis larvae in Liaohe Delta district of Panjing City, Liaoning Province showed that E. affinis
and S. tenellus had significant effects on the survival rate of first stage zoae (Z₁). The higher the
density of the two copepod species, the lower the survival rate of Z₁ was (P＜0.01). Third stage
zoae (Z₃) could prey on the copepods nauplii, and the feeding amount was increased with the
increasing density of the nauplii (P＜0.01). Fifth stage zoae (Z₅) and megalopae could easily prey
on E. affinis, but not on S. tenellus. The megalopae yield in the ecological breeding ponds was
negatively correlated with the quantity of the copepods during early breeding stage of E. sinensis
larvae, and there was a significant difference among the megalopae yields when different quantity of
copepods existed (P＜0.01). Some measures for controlling and utilizing the copepods in ecological
breeding ponds of E. sinensis larvae were put forward.

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