Data/hora: 11/06/2024 05:25:38

Provedor de dados: | Genetics and Molecular Biology
País: | Brazil
Título: | Profile of micronucleus frequencies and nuclear abnormalities in different species of electric fishes (Gymnotiformes) from the Eastern Amazon
Autores: | Melo,Karina Motta; Alves,Ingrid Reale; Pieczarka,Julio Cesar; David,José Augusto de Oliveira; Nagamachi,Cleusa Yoshiko; Grisolia,Cesar Koppe.
Data: | 2013-01-01
Ano: | 2013
Palavras-chave: | Biomonitoring; Genotoxicity; Gymnotiformes; Amazon region; Fish erythrocytes.
Resumo: | The frequency of spontaneous micronucleus (MN) formation in fish species needs to be determined to evaluate their usefulness for genotoxic biomonitoring. The definition of a good bioindicator takes into account the current knowledge of its metabolic traits as well as other factors including its feeding behavior and relationship to the environment. In this study, we compared the basal frequencies of micronucleated erythrocytes and nuclear abnormalities (NA) among different species of the fish Order Gymnotiformes (Rhamphichthys marmoratus, Steatogenys elegans, Sternopygus macrurus, Parapteronotus hasemani, Gymnotus mamiraua, Gymnotus arapaima, Brachyhypopomus beebei, Brachyhypopomus n. sp. BENN) sampled in several localities of the Eastern Amazon. A baseline of MN and NA frequency in these fish was determined, enabling the identification of potentially useful species as models for genotoxicity studies. Only one impacted sample collected at a site in the River Caripetuba showed a significant number of NAs, which may be due to the release of wastewater by neighbouring mining industries and by the burnt fuel released by the small boats used by a local community. Our results may provide support for further studies in areas of the Eastern Amazon affected by mining, deforestation and other anthropogenic activities.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300018
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572013005000032
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.36 n.3 2013
Fonte: | info:eu-repo/semantics/openAccess