Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5331
Título: Avaliação de risco ambiental de pesticidas para ecossistemas aquáticos - representatividade das espécies padrão de invertebrados
Autor: Santos, Liliana Raquel Assunção
Orientador: Daam, Michiel Adriaan
Cerejeira, Maria José Pais de Almeida
Palavras-chave: environmental risk assessment
aquatic invertebrates
insecticides
aquatic ecosystem
mode of action
species sensitivity distributions
Data de Defesa: 2012
Editora: ISA/UTL
Citação: Santos, L.R.A. - Avaliação de risco ambiental de pesticidas para ecossistemas aquáticos - representatividade das espécies padrão de invertebrados. Lisboa: ISA, 2012, 56 p.
Resumo: With the main aim of verifying whether Daphnia magna is sufficient for the evaluation of the environmental risk of pesticides to aquatic ecosystems, toxicity values of 218 insecticides were analyzed. For each one the relative tolerance (Trel) value was calculated to compare the sensitivity of species from different taxonomic groups with that of D. magna. The taxonomic groups were grouped in arthropods, non-arthropod invertebrates, fish, algae/macrophytes and based on Trel values the species sensitivity distribution (SSD) were defined. For the arthropods the influence of the mode of action (MOA) on vulnerability to the insecticide was also analyzed. Still in the arthropods group, for each species, the class, order and family they belong to were identified. To check the necessity of inclusion of a second species studies of relationship were performed, between D. magna, Americamysis bahia and Chironomus riparius. As far as the SSD curves are concerned, for the different groups the most sensitive one was the arthropods group in both values of EC50 and NOEC. Taking into consideration MOA the group of neonicotinoids was the most sensitive one in EC50 case and the GABA – gated chloride channel antagonists in NOEC. The most sensitive taxonomical group was Mysida and it was the combination of Daphnia plus A. Bahia that generated the greater percentage of protection.
Descrição: Mestrado em Engenharia do Ambiente - Gestão Ambiental - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/5331
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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