Niche Overlap
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Food resource partitioning among species of Astyanax (Characiformes: Characidae) in the Lower Iguaçu River and tributaries, Brazil
RESUMO O particionamento de recursos permite a coexistência interespecífica e é frequentemente relatado para espécies semelhantes. Predizemos a existência de partição de recursos entre espécies de Astyanax que co-ocorrem no baixo rio Iguaçu. O total de 848 estômagos de cinco espécies de Astyanax foi analisado. Algas, plantas terrestres e frutos/se
Neotrop. ichthyol.. Publicado em: 25/11/2019
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2. Changes in trophic characteristics of two fish species of Astyanax (Teleostei: Characidae) in response to aquatic pollution
ABSTRACT The trophic plasticity of most fish species of Astyanax Baird & Girard, 1854 in response to environmental changes and resource availability is high. This work evaluates the differences in the trophic characteristics of two congeneric species, Astyanax taeniatus (Jenyns, 1842) and Astyanax lacustris (Lütken, 1875), in Rio das Velhas Basin, which is
Zoologia (Curitiba). Publicado em: 22/07/2019
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3. Ecological niche differentiation between Acanthodactylus micropholis and A. khamirensis (Sauria: Lacertidae) in southern Iran
ABSTRACT Acanthodactylus micropholis Heidari, Rastegar-Pouyani, Rastegar-Pouyani & Rajabizadeh, 2013 and A. khamirensis Blanford, 1874 are genetically and morphologically distinct, but their ecological differentiation has not previously been evaluated. The ecological niche models of these two sister species Acanthodactylus were reconstructed using climate an
Zoologia (Curitiba). Publicado em: 06/06/2019
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4. Community structure of invertebrate fauna in Central Chilean Rivers
Resumo Objetivo Os sistemas fluviais do Chile central são curtos, íngremes e fluem rapidamente. Eles são caracterizados por regimes de descarga dominados por chuvas e neve derretida. A fauna de invertebrados desses sistemas fluviais é altamente endêmica. O objetivo do presente estudo foi descrever a estrutura da comunidade de invertebrados em oito sis
Acta Limnol. Bras.. Publicado em: 11/04/2019
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5. Effect of oil palm (Elaeis guineensis Jacq.) plantations on individual-level diet variation of Hylaeamys megacephalus (G. Fisher 1814) (Rodentia, Cricetidae) in eastern Amazon Forest
Resumo: Neste estudo nós descrevemos a dieta de Hylaeamys megacephalus (G. Fisher, 1814) e investigamos o grau de variação individual na dieta desta espécie entre os hábitats de Floresta Amazônica e Plantação de Palmeira de Dendê. Analisamos o conteúdo estomacal de 36 indivíduos, dos quais 11 foram coletados na floresta e 25 capturados na plantaç
Biota Neotrop.. Publicado em: 28/03/2019
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6. Paleobiogeographic evolution and distribution of Carcharodontosauridae (Dinosauria, Theropoda) during the middle Cretaceous of North Africa
Abstract Over the last few decades, the systematics and evolution of carcharodontosaurids, a group of large predatory dinosaurs, from North Africa have been better understood mainly due the discovery of new species. We review this record here and discuss its importance for understanding the evolution and ecology of these dinosaurs. North Africa has one of th
Pap. Avulsos Zool.. Publicado em: 26/07/2018
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7. Comparative analysis of diet composition and its relation to morphological characteristics in juvenile fish of three lutjanid species in a Mexican Pacific coastal lagoon
ABSTRACT The main goal of this research was to investigate the differences in diet composition among three species of the genus Lutjanus inhabiting a coastal lagoon as juveniles. The working hypothesis was that these species feed on a common base of food resources and therefore, some niche overlap is present in terms of general diet composition. However, cha
Neotrop. ichthyol.. Publicado em: 21/12/2017
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8. The trophic niche of Mesoclemmys vanderhaegei (Testudines: Chelidae): evidence from stable isotopes
ABSTRACT Ecological niche is the multidimensional space comprising the resources used by an organism. Intraspecific variation in resource exploitation is common in reptile populations to maximize coexistence of individuals. The use of stable isotope analysis is an effective tool when there are variations in resource exploitation, since it can provide quantit
Zoologia (Curitiba). Publicado em: 23/10/2017
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9. A closer look at the main actors of Neotropical floodplain food webs: functional classification and niche overlap of dominant benthic invertebrates in a floodplain lake of Paraná River
ABSTRACT Functional classification of animals is necessary to enhance the predictive power of food web models. However, while there is a large database for functional classification of benthic invertebrates (Functional Feeding Groups, FFG) in the temperate zone, the attribution of individual species of riverine invertebrates is still in its infancies in the
Iheringia, Sér. Zool.. Publicado em: 10/06/2016
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10. Lizard assemblage from a sand dune habitat from southeastern Brazil: a niche overlap analysis
RESUMO As comunidades são estruturadas por uma interação de fatores históricos e ecológicos que influenciam o uso de diferentes recursos no tempo e no espaço. Coletamos dados sobre tempo de atividade, o uso de micro-habitat e dieta de uma assembleia de lagartos de um habitat de restinga na costa do Sudeste do Brasil (Restinga de Jurubatiba). Os dados f
An. Acad. Bras. Ciênc.. Publicado em: 29/04/2016
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11. Niche overlap analysis of a lizard assemblage from the Atlantic Rainforest, evaluation of arsenic toxicity in cladocerans, and molecular biology of mycoplasmas
An. Acad. Bras. Ciênc.. Publicado em: 2016
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12. Atlas of Mexican Triatominae (Reduviidae: Hemiptera) and vector transmission of Chagas disease
Chagas disease is one of the most important yet neglected parasitic diseases in Mexico and is transmitted by Triatominae. Nineteen of the 31 Mexican triatomine species have been consistently found to invade human houses and all have been found to be naturally infected with Trypanosoma cruzi. The present paper aims to produce a state-of-knowledge atlas of Mex
Mem. Inst. Oswaldo Cruz. Publicado em: 14/03/2015