IMPOSEX IN NEW-ZEALAND NEOGASTROPODS

被引：76
作者：
STEWART, C
DEMORA, SJ
JONES, MRL
MILLER, MC
机构：
[1] UNIV AUCKLAND, DEPT ZOOL, POB 92019, AUCKLAND, NEW ZEALAND
[2] UNIV AUCKLAND, DEPT CHEM, AUCKLAND, NEW ZEALAND
来源：
MARINE POLLUTION BULLETIN | 1992年 / 24卷 / 04期
关键词：
D O I：
10.1016/0025-326X(92)90531-A
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Imposex has been observed in the New Zealand neogastropod species Lepsiella scobina; Thais orbita; Haustrum haustorium; Xymene ambiguus; Taron dubius; Cominella virgata and Amalda (Baryspira) australis. Imposex occurrence in L. scobina has been studied in more detail in the Auckland region, and the sequence of imposex development described. At 3 control sites, 0% frequency of imposex was observed, but at all other sites 100% frequency of imposex was recorded. Lepsiella scobina populations in the inner Waitemata Harbour were found to be severely imposexed, and appear to be in decline. A relationship was found to exist between imposex intensity (as measured by the Vas Deferens Sequence Index) and L. scobina body burdens of hexane-extractable tin. Lepsiella scobina shows considerable potential as a bioindicator species of TBT contamination in New Zealand coastal waters, due to its acute sensitivity to TBT, intertidal occurrence, widespread distribution, high abundance, direct development and limited adult mobility.
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页码：204 / 209
页数：6
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