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 Amphipod intersex, metals and latitude: A perspective
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5576

title: Amphipod intersex, metals and latitude: A perspective
authors: Pastorinho, M. Ramiro
Telfer, Trevor C.
Soares, Amadeu M. V. M.
keywords: Echinogammarus marinus
Heavy metals
issue date: 2009
publisher: Elsevier
abstract: Intersexuality has been widely reported in crustaceans with several mechanisms being directly or indirectly held responsible for its occurrence, amongst which pollution. No mechanistic relationship between metals and intersex has ever been established. Also the incidence of intersex in populations of the same invertebrate species in a latitudinal gradient has never been studied so far. Three populations (Iceland. Scotland and Portugal) of the amphipod Echinogammarus marinus were scrutinized. Intersex females from Iceland registered the highest fecundity loss. Only in Scottish samples females with two genital papillae and males with only one genital papillae were observed. Nevertheless, water, biota and sediment samples pointed to equivalent metal levels, and in consonance the prevalence of intersex was not significantly different between locations. An unequivocal relationship between metal presence and intersex induction cannot be presented, but our results advocate the potential role of metals as a direct cause of intersexuality in E. marinus. (C) 2009 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/10773/5576
ISSN: 0025-326X
publisher version/DOI: http://dx.doi.org/10.1016/j.marpolbul.2009.02.001
source: Marine Pollution Bulletin
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