Imposex and organotin compounds in marine gastropods and sediments from the Mar del Plata coast, Argentina

The occurrence of imposex in Adelomelon brasiliana during two consecutive years near to Mar del Plata (the principal fishery port of Argentina) and its relation to tributyltin (TBT) and dibutyltin (DBT) content in muscle tissue and digestive gland was investigated using gas chromatography. Percentag...

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Detalles Bibliográficos
Autores principales: Cledón, M., Theobald, N., Gerwinski, W., E. Penchaszadeh, P.
Formato: JOUR
Lenguaje:English
Materias:
coastal zone
gas chromatography
gastropod
imposex
marine ecosystem
organotin compound
sediment pollution
spring (season)
summer
tributyltin
Argentina
Buenos Aires [Argentina]
Mar del Plata
South America
Adelomelon
Gastropoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00253154_v86_n4_p751_Cledon
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The occurrence of imposex in Adelomelon brasiliana during two consecutive years near to Mar del Plata (the principal fishery port of Argentina) and its relation to tributyltin (TBT) and dibutyltin (DBT) content in muscle tissue and digestive gland was investigated using gas chromatography. Percentage of imposex affected females increased to over 80% in spring and summer of both years. However, its intensity, given by the relative penis size index (RPSI), fluctuated around low values. Adelomelon brasiliana digestive gland samples showed a very low concentration of TBT (36-46 ng/g dry weight). Egg capsules presented normal viable embryos, which had TBT concentrations similar to the capsule wall (15 ng/g) while the intracapsular liquid was only 2 ng/g, similar to the sediment concentration. The proportion and distribution of butyltin compounds (BTs) in sediments indicate a major contamination event.

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