4 documents found, page 1 of 1
Caracterização ecotoxicológica de um substrato orgânico em fim de vida
Serrão, Joana; Bouguerra, Sirine; Nogueira, Verónica; Sanchez-Hernandez, Juan C.; Carvalho, Susana M.P.; Pereira, RuthNos últimos anos a utilização de substratos para a produção de frutos e hortícolas em estufa tem vindo a aumentar. Estes materiais apresentam várias vantagens, nomeadamente um uso mais eficiente da água e dos nutrientes e a redução da aplicação de produtos fitofarmacêuticos. No entanto, o destino destes substratos no fim da sua vida útil é um assunto controverso que necessita de aprofundamento científico. Devid...
Biomarkers of exposure and effect in a lacertid lizard (Podarcis bocagei Seoane...
Amaral, Maria José; Sanchez-Hernandez, Juan C.; Bicho, Rita C.; Carretero, Miguel A.; Valente, Ricardo; Faustino, Augusto M. R.; Soares, Amadeu M. V. M.In Europe, reptiles have been recently included in environmental risk-assessment processes for registration of plant-protection products. However, data on toxicity effects of most compounds are lacking. Chlorpyrifos is the most commonly used organophosphorus insecticide worldwide. In the present study, the authors exposed a lacertid lizard, Podarcis bocagei, to sublethal concentrations of chlorpyrifos. Individu...
The usefulness of mesocosms for ecotoxicity testing with lacertid lizards
Amaral, Maria José; Bicho, Rita C.; Carretero, Miguel A.; Sanchez-Hernandez, Juan C.; Faustino, Augusto; Soares, Amadeu M. V. M.; Mann, Reinier M.Mesocosms (i.e., outdoor, man-made representations of natural ecosystems) have seldom been used to study the impact of contaminants on terrestrial ecosystems. However, mesocosms can be a useful tool to provide a link between field and laboratory studies. We exposed juvenile lacertid lizards for a period of over one year to pesticides (herbicides and insecticides) in mesocosm enclosures with the intention of val...
The use of a lacertid lizard as a model for reptile ecotoxicology studies: part...
Amaral, Maria José; Bicho, Rita C.; Carretero, Miguel A.; Sanchez-Hernandez, Juan C.; Faustino, Augusto M. R.; Soares, Amadeu M. V. M.; Mann, Reinier M.As part of a wider study examining the impacts of corn pesticides on lacertid lizards in north-western Portugal, we examined various physiological, biochemical, and histological biomarkers of exposure and effect among field populations of Podarcis bocagei. Biomarkers included body condition index, standard metabolic rate, locomotor performance, parasitization, glutathione oxidative pathways and related enzyme a...