Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Biota Neotropica (2) BABT (1) Neotropical Ichthyology (1) Autor Casatti,Lilian (1) Delariva,Rosilene Luciana (1) Fenerich-Verani,Nelsy (1) Ferro,Dagmar Aparecida de Marco (1) Fragoso-Moura,Evelise Nunes (1) Iglesias,José Manoel Pires (1) Mattox,George Mendes Taliaferro (1) Neves,Mayara Pereira (1) Sá,Maria de Fátima Pereira de (1) Wolff,Luciano Lazzarini (1) Mais... Palavra-chave Stream fishes (4) Conservation (2) Atlantic Rainforest (1) Characidae (1) Endangered species (1) Endemism (1) Feeding ecology (1) Iguaçu River basin (1) Intersexuality (1) Morphotypes (1) Neotropical ichthyofauna (1) Niche overlap (1) Reproduction (1) River continuum concept (1) Tetras (1) Upper Rio Paraná (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2015 (1) 2010 (1) 2008 (1) 2005 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Diet and ecomorphological relationships of an endemic, species-poor fish assemblage in a stream in the Iguaçu National Park Neotropical Ichthyology Neves,Mayara Pereira; Delariva,Rosilene Luciana; Wolff,Luciano Lazzarini. This study investigated the morphological and dietary relationships of the fish assemblage in a stream with an endemic fauna and low species richness. The ichthyofauna was sampled quarterly from September 2011 to July 2012, through the electrofishing technique. The stomach contents of 419 individuals belonging to seven species were analyzed by the volumetric method, and the ecomorphological traits of 30 specimens of each species were estimated. The main food items consumed were detritus, aquatic and terrestrial insects, and other aquatic invertebrates. We observed low levels of trophic niche breadth and diet overlap between most species. The PCA scores indicated the occurrence of three ecomorphotypes. PCA axis 1 segregated at one extreme, species with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding ecology; Iguaçu River basin; Morphotypes; Niche overlap; Stream fishes. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100245 Ichthyofauna of Rio Jurubatuba, Santos, São Paulo: a high diversity refuge in impacted lands Biota Neotropica Mattox,George Mendes Taliaferro; Iglesias,José Manoel Pires. Ichthyofaunistic surveys in the Atlantic Rainforest have been published in relatively few works, in spite of the major biological importance of this once vast biome which is rapidly vanishing due to disordered human population growth and natural resources overexploitation. The present study aimed to access the fish fauna of a relatively well preserved basin between the cities of Santos and Cubatão (SP), an area highly modified by human activities where recent ichthyofaunistic surveys are still missing. Collections were made during three field trips in Rio Jurubatuba, a medium sized costal river, and Riacho Sabão, one of its main tributaries. A total of 2773 specimens were sampled, representing 25 species from 14 families. Six species were primary marine... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Rainforest; Conservation; Endangered species; Endemism; Stream fishes. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000100010 Fish assemblage structure in a first order stream, southeastern Brazil: longitudinal distribution, seasonality, and microhabitat diversity Biota Neotropica Casatti,Lilian. This study was carried out on a first order stream in the Morro do Diabo State Park, southeastern Brazil. Three equidistant stream stretches - upper, middle, and lower - were chosen for underwater observations and fish collections that were performed in the dry (June and September 2000) and wet seasons (December 2000 and March 2001). Of the 18 fish species documented, 11 were considered resident year round. Phalloceros caudimaculatus, Hypostomus nigromaculatus, Hisonotus francirochai, Trichomycterus diabolus, and Hypostomus ancistroides represented 90% of the collected specimens. The highest richness and abundance occurred during the wet season. In general, the longitudinal addition of species follows the addition of microhabitats. Sexually mature... Tipo: Info:eu-repo/semantics/article Palavras-chave: Upper Rio Paraná; Stream fishes; Conservation; Reproduction; River continuum concept. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000100009 Occurrence of intersexuality in " Lambaris" , Astyanax scabripinnis (Jenyns, 1842), small characids from the Brazilian streams BABT Sá,Maria de Fátima Pereira de; Fragoso-Moura,Evelise Nunes; Fenerich-Verani,Nelsy; Ferro,Dagmar Aparecida de Marco. During studies carried out with a small characid (Astyanax scabripinnis), from the Brazilian streams located in Cerrado biome, some gonads of fishes exhibited sparse oocytes in perinucleolar stage embedded in normally developing testicular tissues. Another pattern of gonad intersex with vitellogenic oocytes and mature lobules was observed in the gonads of fishes collected from a reservoir supplied by the Atlantic Forest stream. These gonads in different stages of maturation were examined histologically. The results revealed the patterns occurring in fishes of the same species, from four different populations. Tipo: Info:eu-repo/semantics/article Palavras-chave: Intersexuality; Neotropical ichthyofauna; Characidae; Tetras; Stream fishes. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200011 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