Imposex in gastropods from Venezuela

The imposex phenomenon is a superimposition of male characters on gastropod females due to exposure to tributyltin (TBT). There have been no previous reports of this phenomenon in the southern Caribbean, which is inhabited by some edible and commercially exploited gastropod populations. To determine...

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Autores principales: Miloslavich, P., Penchaszadeh, P.E., Bigatti, G.
Formato: JOUR
Materias:
Edible gastropods
Imposex
Marine pollution
Southern Caribbean
TBT
antifouling
bioindicator
gastropod
imposex
marine pollution
tributyltin
South America
Venezuela
Chicoreus
Gastropoda
Leucozonia
Phyllonotus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01853880_v33_n3_p319_Miloslavich
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01853880_v33_n3_p319_Miloslavich
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spelling todo:paper_01853880_v33_n3_p319_Miloslavich2023-10-03T15:08:40Z Imposex in gastropods from Venezuela Miloslavich, P. Penchaszadeh, P.E. Bigatti, G. Edible gastropods Imposex Marine pollution Southern Caribbean TBT antifouling bioindicator gastropod imposex marine pollution tributyltin South America Venezuela Chicoreus Gastropoda Leucozonia Phyllonotus The imposex phenomenon is a superimposition of male characters on gastropod females due to exposure to tributyltin (TBT). There have been no previous reports of this phenomenon in the southern Caribbean, which is inhabited by some edible and commercially exploited gastropod populations. To determine whether imposex is affecting some of these local gastropod populations, surveys were conducted at several sites with different levels of boating activity around Margarita Island and on the continental coast of Venezuela. The species affected were Chicoreus brevifrons, Chicoreus (Phylonotus) margaritensis and Leucozonia nasa; however, no females with obstructed vagina were observed. Imposex was observed in a coastal lagoon and on the coast at sites characterized by medium to high boat concentrations, but was not detected in open waters with low marine traffic. A survey of local boat operators indicated that the use of TBT had stopped 2-3 years prior to this study and had been replaced by regular application of other antifouling paints. This is the first report of imposex in Venezuela, but further studies incorporating the bioindicators identified here are needed in order to determine the full extent of TBT contamination and the biological implications in zones with marine traffic. Fil:Penchaszadeh, P.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bigatti, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01853880_v33_n3_p319_Miloslavich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Edible gastropods
Imposex
Marine pollution
Southern Caribbean
TBT
antifouling
bioindicator
gastropod
imposex
marine pollution
tributyltin
South America
Venezuela
Chicoreus
Gastropoda
Leucozonia
Phyllonotus
spellingShingle Edible gastropods
Imposex
Marine pollution
Southern Caribbean
TBT
antifouling
bioindicator
gastropod
imposex
marine pollution
tributyltin
South America
Venezuela
Chicoreus
Gastropoda
Leucozonia
Phyllonotus
Miloslavich, P.
Penchaszadeh, P.E.
Bigatti, G.
Imposex in gastropods from Venezuela
topic_facet Edible gastropods
Imposex
Marine pollution
Southern Caribbean
TBT
antifouling
bioindicator
gastropod
imposex
marine pollution
tributyltin
South America
Venezuela
Chicoreus
Gastropoda
Leucozonia
Phyllonotus
description The imposex phenomenon is a superimposition of male characters on gastropod females due to exposure to tributyltin (TBT). There have been no previous reports of this phenomenon in the southern Caribbean, which is inhabited by some edible and commercially exploited gastropod populations. To determine whether imposex is affecting some of these local gastropod populations, surveys were conducted at several sites with different levels of boating activity around Margarita Island and on the continental coast of Venezuela. The species affected were Chicoreus brevifrons, Chicoreus (Phylonotus) margaritensis and Leucozonia nasa; however, no females with obstructed vagina were observed. Imposex was observed in a coastal lagoon and on the coast at sites characterized by medium to high boat concentrations, but was not detected in open waters with low marine traffic. A survey of local boat operators indicated that the use of TBT had stopped 2-3 years prior to this study and had been replaced by regular application of other antifouling paints. This is the first report of imposex in Venezuela, but further studies incorporating the bioindicators identified here are needed in order to determine the full extent of TBT contamination and the biological implications in zones with marine traffic.
format JOUR
author Miloslavich, P.
Penchaszadeh, P.E.
Bigatti, G.
author_facet Miloslavich, P.
Penchaszadeh, P.E.
Bigatti, G.
author_sort Miloslavich, P.
title Imposex in gastropods from Venezuela
title_short Imposex in gastropods from Venezuela
title_full Imposex in gastropods from Venezuela
title_fullStr Imposex in gastropods from Venezuela
title_full_unstemmed Imposex in gastropods from Venezuela
title_sort imposex in gastropods from venezuela
url http://hdl.handle.net/20.500.12110/paper_01853880_v33_n3_p319_Miloslavich
work_keys_str_mv AT miloslavichp imposexingastropodsfromvenezuela
AT penchaszadehpe imposexingastropodsfromvenezuela
AT bigattig imposexingastropodsfromvenezuela
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