底栖多毛类动物双齿围沙蚕(Perinereis aibuhitensis)对沉积颗粒物的再造作用

摘要

双齿围沙蚕是底栖多毛类动物,广泛分布于亚洲近海和河口环境中.本文研究了天津北塘河口双齿围沙蚕对沉积颗粒物的再造作用.研究结果表明双齿围沙蚕对沉积颗粒物有显著的混合能力,其中对小粒径颗粒物的混合作用强于大粒径颗粒物.小粒径颗粒物可以被沙蚕摄食随粪便排出.%The infaunal polychaete Perinereis aibuhitensis Grube, distributes widely along Asian coasts and estuaries. In this research the particle reworking function of P. aibuhitensis was investigated in Beitang Estuary, Tianjin. The result showed that P.aibuhitensis displayed significant particle mixing function, in which small grain size sediment particles were mixed more than the large size ones. Some small grain size sediment particles could be ingested by P. aibuhitensis and egested with fecal pellets.