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Lookup NU author(s): Emeritus Professor Stewart Evans
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Imposex was recorded in samples of dogwhelks Thais spp. from each of the sites surveyed in Hong Kong and Singapore, and the majority of those in Phuket and Penang. There was no imposex in samples from Langkawi. The most advanced symptoms were those from shores close to commercial harbours, marinas and mariculture sites, suggesting that tributyltin (TBT) is a primary cause of the condition. All females were categorised as sterile from four sites on Hong Kong. In these cases recruitment has probably occurred as a result of the dispersal of larvae from fecund populations elsewhere. However, severe imposex was surprisingly localised, even in Hong Kong. There was evidence of decreasing symptoms of imposex with increasing distance from centres of shipping activity.
Author(s): Evans SM, Bech M, Hawkins ST, Smith R, Stewart A
Publication type: Article
Publication status: Published
Journal: Invertebrate Reproduction and Development
Year: 2001
Volume: 39
Issue: 3
Pages: 231-237
Print publication date: 01/01/2001
ISSN (print): 0792-4259
ISSN (electronic):
Publisher: Balaban Publishers International Science Services
URL: http://dx.doi.org/10.1080/07924259.2001.9652487
DOI: 10.1080/07924259.2001.9652487
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