Effects of imposex on reproduction and population of gastropods

Abstract

Abstract: Imposex in gastropods can be induced by tributyltin,which acts as endocrine disrupting chemicals.In the development of imposex,female will become sterile and even dead when the vulva is replaced by the prostate or blocked by the vas deferens,the bursa compulatrix or the capsule gland opens,the capsule gland is blocked interiorly,and the ovary becomes testis.Subsequently,the ratio of female to male and the juveniles to the adults decreases,and the population declines.The population with planktonic larva can sustain by immigrating,while one without planktonic larva will extinct locally due to the limited dispersal of juvenile snails.The functional effect of imposex is revelatory to the research of ecological effect for other endocrine disrupting chemicals.

Key words: Energy, Casurina equisetifolia, Homogeneous eolian sandy soil, Red earth eolian sandy soil

CLC Number:

X145

SHI Huahong, YU Xiujuan, ZHU Sixi, HUANG Changjiang. Effects of imposex on reproduction and population of gastropods[J]. cje, 2004, (6): 89-93.

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