Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Biota Neotropica (1) Neotropical Ichthyology (1) Autor Beneditto,Ana Paula Madeira Di (2) Camargo,Plínio Barbosa (2) Kehrig,Helena Amaral (2) Bittar,Vanessa Trindade (1) Rezende,Carlos Eduardo (1) Rezende,Carlos Eduardo de (1) Mais... Palavra-chave Carbon (1) Diet tracers (1) Marine vertebrates (1) Nitrogen (1) Rio de Janeiro (1) Southwest Atlantic (1) Stable isotopes (1) Trace element (1) Trichiurus lepturus (1) Trophic niche (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2013 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Mercury and stable isotopes (δ15N and δ13C) as tracers during the ontogeny of Trichiurus lepturus Neotropical Ichthyology Beneditto,Ana Paula Madeira Di; Bittar,Vanessa Trindade; Rezende,Carlos Eduardo de; Camargo,Plínio Barbosa; Kehrig,Helena Amaral. This study applies total mercury (THg) concentration and stable isotope signature (δ15N and δ13C) to evaluate the trophic status and feeding ground of Trichiurus lepturus during its ontogeny in northern Rio de Janeiro, south-eastern Brazil. The trophic position of T. lepturus is detected well by THg and δ15N as the sub-adult planktivorous specimens are distinct from the adult carnivorous specimens. The δ13C signatures suggest a feeding ground associated with marine coastal waters that are shared by fish in different ontogenetic phases. The diet tracers indicated that the fish feeding habits do not vary along seasons of the year, probably reflecting the prey availability in the study area. This fish has economic importance and the concentration of THg was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon; Diet tracers; Nitrogen; Trace element; Trichiurus lepturus. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100211 Trophic niche comparison between two predators in northern Rio de Janeiro State, Brazil: a stable isotopes approach Biota Neotropica Beneditto,Ana Paula Madeira Di; Rezende,Carlos Eduardo; Camargo,Plínio Barbosa; Kehrig,Helena Amaral. The trophic niche of the sympatric predators Pontoporia blainvillei(franciscana dolphin) and Trichiurus lepturus (ribbonfish) was compared by stable isotope (δ15N and δ13C) ratios in hepatic and muscular tissues to understand how they co-exist in the northern Rio de Janeiro State (21°30′S-22°15′S), south-eastern Brazil. Dolphin specimens were incidentally captured through commercial gillnet fisheries, while fish specimens were the target of these fisheries. The predators had similar δ15N values in the liver (P. blainvillei: 14.6 ± 1.0‰; T. lepturus: 14.4 ± 0.6‰), which indicates similar trophic position in the recent food intake. However,P. blainvillei showed lighter δ15N values in muscle (13.8 ± 1.0‰) than T. lepturus (15.0 ± 0.4‰), revealing differences... Tipo: Info:eu-repo/semantics/article Palavras-chave: Trophic niche; Marine vertebrates; Stable isotopes; Rio de Janeiro; Southwest Atlantic. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300029 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco