Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Biota Neotropica (2) BABT (1) Neotropical Ichthyology (1) Autor Beneditto,Ana Paula Madeira Di (4) Camargo,Plínio Barbosa (2) Kehrig,Helena Amaral (2) Bittar,Vanessa Trindade (1) Lima,Neuza Rejane Wille (1) Monteiro,Leandro Rabello (1) Ramos,Renata Maria Arruda (1) Rezende,Carlos Eduardo (1) Rezende,Carlos Eduardo de (1) Tavares,Maria Thereza Manhães (1) Mais... Palavra-chave Stable isotopes (2) Trophic niche (2) Accidental capture (1) Ariidae (1) Carbon (1) Diet tracers (1) Feeding assimilation (1) Fishery (1) Marine vertebrates (1) Nitrogen (1) Pontoporia blainvillei (1) Rio de Janeiro (1) Sotalia fluviatilis (1) Southwest Atlantic (1) Trace element (1) Trichiurus lepturus (1) Tropical area (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2018 (1) 2013 (2) 1998 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 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 Isotopic niche of the catfishes Bagre bagre and Genidens barbus in a coastal area of south-eastern Brazil Biota Neotropica Beneditto,Ana Paula Madeira Di; Tavares,Maria Thereza Manhães; Monteiro,Leandro Rabello. Abstract: The isotopic niche of Bagre bagre and Genidens barbus target of commercial fisheries in a marine coastal area from northern Rio de Janeiro State (~21ºS), south-eastern Brazil was compared to evaluate the feeding assimilation and the trophic relationship. The mean isotopic values of the catfishes and their food items in the δ13C-δ15N space were coherent with their respective trophic positions. The relative contributions of the food items highlighted the shrimp Xiphopenaeus kroyeri as the most assimilated item in the diet of B. bagre, while for G. barbus the model highlighted the fish Porichthys porosissimus. The absence of niche overlap together with the trophic evenness point to a reduced feeding overlap between B. bagre and G. barbus in northern... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ariidae; Feeding assimilation; Stable isotopes; Trophic niche; Tropical area. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300201 Fishing activity in Northern Rio de Janeiro State (Brazil) and its relation with small cetaceans BABT Beneditto,Ana Paula Madeira Di; Ramos,Renata Maria Arruda; Lima,Neuza Rejane Wille. Research on fishing activity at Atafona village, in Northern Rio de Janeiro, Brazil (21°35'S), was carried out between 1987-96 for the purpose of relating it to the accidental capture of small cetaceans and of estimating the relationship between fishing activity and the diet of small cetaceans. Data on fishing operations were obtained at the cold storage plants management, from interviews with fishermen and personal observations. The most representative fishing resources were Xyphopenaeus kroyeri, Micropogonias furnieri, Carcharhinus plumbeus, C. acronotus,and Rhizoprionodon porosus. Gillnets are responsible for the accidental capture of small cetaceans in the region, mainly Pontoporia blainvillei and Sotalia fluviatilis (marine form). Four types of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fishery; Accidental capture; Pontoporia blainvillei; Sotalia fluviatilis. Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000300004 Registros recuperados: 4 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