Vitellogenin is not an appropriate biomarker of feminisation in a crustacean

Aquatic Toxicology
Stephen J ShortAlex T Ford

Abstract

The expression of the yolk protein vitellogenin (Vtg) has been used as a biomarker of feminisation in multiple fish species throughout the world. Since the late 1990s, researchers have attempted to develop similar biomarkers to address whether reproductive endocrine disruption also occurs in the males of invertebrate groups such as the Crustacea. To date, the vast majority of studies investigating Vtg induction in male Crustacea have resulted in negative or inconclusive results, leading researchers to question the utility of Vtg expression as a biomarker in this taxon. This study measured the expression of Vtg genes in two intersex phenotypes (termed internal and external) found in the male amphipod, Echinogammarus marinus, and compared them with those of normal males and females. Males presenting the external intersex phenotype are infected with known feminising parasites and display a variety of feminised traits including oviduct structures on their testes and external female brood plates (oostegites). The internal intersex male phenotype, that displays a pronounced oviduct structure on the testes without the external intersex characteristics, is not parasite infected and it is thought to be a result of environmental contamin...Continue Reading

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Citations

Oct 25, 2014·Environmental Science & Technology·Stephen ShortAlex T Ford
Apr 26, 2017·Environmental Toxicology and Chemistry·Andrew BarrickCatherine Mouneyrac
May 28, 2019·Environmental Science and Pollution Research International·Madson Silveira de MeloEric Gismondi
Jan 22, 2020·Molecular and Cellular Endocrinology·Virginie Cuvillier-Hot, Alain Lenoir
Oct 28, 2014·Environmental Science & Technology·Judith TrappOlivier Geffard
Oct 15, 2020·Environmental Science & Technology·Alex T Ford, Gerald A LeBlanc

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