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Abstract:

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 A survey of local boat operators indicated that the use of TBT had stopped 2-3 years prior to this study and had been replaced by regular application of other antifouling paints.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.

Registro:

Documento: Artículo
Título:Imposex in gastropods from Venezuela
Autor:Miloslavich, P.; Penchaszadeh, P.E.; Bigatti, G.
Filiación:Departamento de Estudios Ambientales, Universidad Simón Bolívar, Apartado postal 89000, Caracas 1080, Venezuela
CONICET, Facultad de Ciencias Exactas y Naturales, UBA, Av. Angel Gallardo 470, Buenos Aires, Argentina
Centro Nacional Patagónico CENPAT, CONICET, Bvd. Brown 2825, Puerto Madryn Chubut, Argentina
Palabras clave:Edible gastropods; Imposex; Marine pollution; Southern Caribbean; TBT; antifouling; bioindicator; gastropod; imposex; marine pollution; tributyltin; South America; Venezuela; Chicoreus; Gastropoda; Leucozonia; Phyllonotus
Año:2007
Volumen:33
Número:3
Página de inicio:319
Página de fin:324
DOI: http://dx.doi.org/10.7773/cm.v33i3.1147
Título revista:Ciencias Marinas
Título revista abreviado:Cienc. Mar.
ISSN:01853880
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01853880_v33_n3_p319_Miloslavich

Referencias:

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Citas:

---------- APA ----------
Miloslavich, P., Penchaszadeh, P.E. & Bigatti, G. (2007) . Imposex in gastropods from Venezuela . Ciencias Marinas, 33(3), 319-324.
http://dx.doi.org/10.7773/cm.v33i3.1147
---------- CHICAGO ----------
Miloslavich, P., Penchaszadeh, P.E., Bigatti, G. "Imposex in gastropods from Venezuela " . Ciencias Marinas 33, no. 3 (2007) : 319-324.
http://dx.doi.org/10.7773/cm.v33i3.1147
---------- MLA ----------
Miloslavich, P., Penchaszadeh, P.E., Bigatti, G. "Imposex in gastropods from Venezuela " . Ciencias Marinas, vol. 33, no. 3, 2007, pp. 319-324.
http://dx.doi.org/10.7773/cm.v33i3.1147
---------- VANCOUVER ----------
Miloslavich, P., Penchaszadeh, P.E., Bigatti, G. Imposex in gastropods from Venezuela . Cienc. Mar. 2007;33(3):319-324.
http://dx.doi.org/10.7773/cm.v33i3.1147