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	Provedor de dados Neotropical Ichthyology (2) Autor Penha,Jerry (2) Assunção,Wilhan R. C. (1) Duca,Charles (1) Fernandes,Izaias M (1) Machado,Francisco A (1) Silva,Samuel Elias (1) Mais... Palavra-chave Assemblage structure (1) Effect of habitat alteration (1) Floodplain (1) Foraging (1) Resting time (1) Spatial distribution (1) Species richness (1) Temporary water (1) Territory defense (1) Territory size (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2010 (1) 2009 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Cost of territorial maintenance by Parodon nasus (Osteichthyes: Parodontidae) in a Neotropical stream Neotropical Ichthyology Silva,Samuel Elias; Assunção,Wilhan R. C.; Duca,Charles; Penha,Jerry. The combined demand over a certain resource may exceed its immediate supply, which can then lead to competition between individuals. This competition may result in territorial behavior. In this study we determine the density and spatial distribution, describe the interactions arising from territorial behavior and evaluate the costs of keeping the territories defended by adults of Parodon nasus. The study was conducted in Camarinha Stream located in the Serra das Araras Ecological Station, Porto Estrela, State of Mato Grosso, Brazil. The density was constant throughout the length of the stream, with a mean (± standard deviation) of 1.01 ind./m² (± 0.14). Our results show that the spatial distribution of individuals in the area ranged between uniform and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Spatial distribution; Territory size; Foraging; Resting time; Territory defense. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400017 Spatial pattern of a fish assemblage in a seasonal tropical wetland: effects of habitat, herbaceous plant biomass, water depth, and distance from species sources Neotropical Ichthyology Fernandes,Izaias M; Machado,Francisco A; Penha,Jerry. The influence of habitat, biomass of herbaceous vegetation, depth and distance from permanent water bodies on the structure of fish assemblages of a seasonal floodplain was evaluated using data collected along 22 transects in an area of 25 km² in the floodplain of Cuiabá River, Pantanal, Brazil. Each transect was sampled for fish using throw traps and gillnets during the flood period of 2006. Multivariate multiple regression analysis and multivariate analysis of covariance indicated that depth was the only variable that affected the structure of the fish assemblage, both for quantitative data (abundance) and qualitative data (presence-absence). Species such as Neofundulus parvipinnis and Laetacara dorsigera were more abundant in shallower sites (below 25... Tipo: Info:eu-repo/semantics/article Palavras-chave: Assemblage structure; Effect of habitat alteration; Floodplain; Species richness; Temporary water. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200007 Registros recuperados: 2 Primeira ... 1 ... Última

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