Utilize este identificador para referenciar este registo: https://hdl.handle.net/10316/25761
Título: Impact of mercury contamination on the population dynamics of Peringia ulvae (Gastropoda): Implications on metal transfer through the trophic web
Autor: Cardoso, P. G. 
Sousa, E. 
Matos, P. 
Henriques, B. 
Pereira, E. 
Duarte, A. C. 
Pardal, M. A. 
Palavras-chave: mercury; gastropod; Peringia ulvae; population dynamics; metal transfer; trophic web
Data: 2013
Editora: Elsevier Ltd.
Título da revista, periódico, livro ou evento: Estuarine, Coastal and Shelf Science
Volume: 129
Resumo: The effects of mercury contamination on the population structure and dynamics of the gastropod Peringia ulvae (also known as Hydrobia ulvae) and its impact on the trophic web were assessed along a mercury gradient in Ria de Aveiro (Portugal). The gastropod was revealed to be a tolerant species to the contaminant, since the highest densities, biomasses and growth productivity values were recorded at the intermediate contaminated area followed by the most contaminated one and finally the least contaminated area. P. ulvae was however negatively affected by mercury in terms of growth and life span. So, in the most contaminated area the population was characterised mainly by the presence of juveniles and young individuals. The intermediate contaminated area showed a greater equilibrium in terms of groups’ proportion, being the adults the dominant set. The least contaminated area presented intermediate values. P. ulvae life spans were shortest in the most contaminated area (7e8 mo), followed by the least contaminated area (10e11 mo) and finally, the intermediate one (11e14 mo). P. ulvae revealed to be an important vehicle of mercury transfer from sediments to the trophic web, incorporating approximately 15 g of Hg, annually, in the inner area of the Laranjo Bay (0.6 Km2). Therefore, despite P. ulvae being revealed to be not a good bio-indicator of mercury contamination, since it did not suffer profound modifications in its structure and functioning, it is a crucial element in the mercury biomagnification processes throughout the food web.
URI: https://hdl.handle.net/10316/25761
DOI: 10.1016/j.ecss.2013.06.002
Direitos: openAccess
Aparece nas coleções:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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