Recovery of marine Conus (Mollusca: Caenogastropoda) from imposex at Rottnest Island, Western Australia, over a quarter of a century.

Autor: Wells FE; Department of Environment and Agriculture, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia; School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia; Integrative Research Center, Field Museum of Natural History, Chicago, IL 60605, USA. Electronic address: fred.wells@curtin.edu.au., Keesing JK; CSIRO Oceans and Atmosphere, Indian Ocean Marine Research Centre, The University of Western Australia, Crawley, Western Australia 6009, Australia; Oceans Research Institute, Indian Ocean Marine Research Centre, The University of Western Australia, Crawley, Western Australia 6009, Australia., Brearley A; Oceans Research Institute, Indian Ocean Marine Research Centre, The University of Western Australia, Crawley, Western Australia 6009, Australia.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2017 Oct 15; Vol. 123 (1-2), pp. 182-187. Date of Electronic Publication: 2017 Sep 04.
DOI: 10.1016/j.marpolbul.2017.08.064
Abstrakt: Imposex is a reproductive abnormality in which female snails begin to transform to males, but do not become functional. It was caused by tributyltin (TBT) used as an antifoulant in boat paints. Imposex was first recorded marine snails (Conus) (Mollusca: Caenogastropoda) at Rottnest Island, Western Australia, in January 1991, where 88% of individuals at the west end were affected. Most were at moderate Stages 3 and 4 on a scale of 0 (no affect) to 6 (death). TBT was banned on boats <25m long in late 1991 in WA. In 1996, imposex had declined to 69% of females with Stages 3 and 4 still the most common. By 2007 only 35% of females exhibited imposex; Stage 3 was the highest level recorded. TBT was below detection limits. TBT was banned on vessels >25m in September 2013. In February 2017 only 4% of Conus had imposex, at Stage 1.
(Copyright © 2017. Published by Elsevier Ltd.)
Databáze: MEDLINE
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