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	Provedor de dados Neotropical Ichthyology (2) Iheringia, Sér. Zool. (1) Autor Gerhard,Pedro (3) Brejão,Gabriel L. (1) Brejão,Gabriel Lourenço (1) Cyrino,José E. P. (1) Ferreira,Anderson (1) Teresa,Fabrício B. (1) Zuanon,Jansen (1) Mais... Palavra-chave Snorkeling (2) Characiformes (1) Deforestation arc (1) Dispersal-based process (1) Feeding ecology (1) Feeding tactics (1) Habitat features (1) Insectivorous fishes (1) NMDS (1) Natural history (1) Niche-based process (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2020 (1) 2013 (1) 2012 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Diet of Astyanax paranae (Characidae) in streams with different riparian land covers in the Passa-Cinco River basin, southeastern Brazil Iheringia, Sér. Zool. Ferreira,Anderson; Gerhard,Pedro; Cyrino,José E. P.. An analysis of the diet of Astyanax paranae Eigenmann, 1914 in nine streams located in the Passa-Cinco River basin (upper Paraná River system) was performed to investigate the feeding habits of this species, check for possible spatial variations in diet and to investigate the influence of riparian vegetation in the composition of the diet. Stomach contents of 243 specimens were analyzed by the methods of relative frequency of occurrence and volume, and the diet was characterized by the alimentary index (AIi). The species showed insectivorous feeding habits, with a predominance of terrestrial and aquatic insects in the diet, varying by location. In most streams, resources of allochthonous origin were the most consumed. The participation of aquatic insects... Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding ecology; Characiformes; Insectivorous fishes; Habitat features. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100011 Functional trophic composition of the ichthyofauna of forest streams in eastern Brazilian Amazon Neotropical Ichthyology Brejão,Gabriel Lourenço; Gerhard,Pedro; Zuanon,Jansen. This study aimed to describe the functional organization of the ichthyofauna of forest streams from northeastern Pará State, Brazil, based on behavioral observation of species' feeding tactics. Seven streams were sampled between June and November, 2010, during snorkeling sessions, totaling 91h 51min of visual censuses at day, dusk, and night periods. Seventy three species distributed in six orders, 26 families and 63 genera were observed, with dominance of Characiformes, followed by Siluriformes. From information gathered by ad libitum observations, each species was included in one of 18 functional trophic groups (FTGs), according to two main characteristics: (1) its most frequently observed feeding tactic; and (2) its spatial distribution in the stream... Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding tactics; Natural history; Snorkeling. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200361 When roads cross streams: fish assemblage responses to fluvial fragmentation in lowland Amazonian streams Neotropical Ichthyology Brejão,Gabriel L.; Teresa,Fabrício B.; Gerhard,Pedro. ABSTRACT Roads affect biodiversity by increasing mortality rates, habitat loss, and natural landscape fragmentation. Poorly installed culverts can impound streams, changing the environmental conditions, and affecting aquatic communities. We evaluated the effects of road crossings on the taxonomic composition and functional structure of fish assemblages in lowland eastern Amazonian streams, Brazil. We tested the hypothesis that the presence of road-derived impoundments affects assemblage taxonomic and functional composition and structure. Two predictions were addressed: (1) Species and functional group composition will differ in impounded reaches in relation to lotic reaches; (2) Assemblages in downstream lotic reaches will be richer in species and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Deforestation arc; Dispersal-based process; Niche-based process; NMDS; Snorkeling. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300205 Registros recuperados: 3 Primeira ... 1 ... Última

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