Niche overlap and resource partitioning among five sympatric bufonids (Anura, Bufonidae) from northeastern Argentina
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Studying the diet behaviors and trophic parameters of sympatric species provides important data for understanding the community and for the development of conservation guidelines.Abstract:
Niche overlap and resource partitioning among five sympatric bufonids (Anura, Bufonidae) from northeastern Argentina. The niche overlap and resource partitioning were analyzed for five sympatric bufonids from Northeastern Argenti- na: Rhinella schneideri, R. bergi, R. fernandezae, R. granulosa, and Melanophryniscus cupreuscapularis. The primary objectives were to analyze the diet and pattern of coexistence relative to the microhabitats among species. The bufonids, which are primarily terrestrial, exhibited a preference for small, hard prey such as formicids or coleopterans. The smallest species preferably consumed ants, while R. schneideri preferred beetles. Significant differences were detected for the diets of these five species. In addition, significant overlap in the trophic niche was noted for all species except between R. granulosa and R. schneideri. Studying the diet behaviors and trophic parameters of sympatric species provides important data for understanding the community and for the development of conservation guidelines.read more
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Diet of the toad Rhinella icterica (Anura: Bufonidae) from Atlantic Forest Highlands of southeastern Brazil
Leandro Talione Sabagh,Leandro Talione Sabagh,Ana Maria Paulino Telles de Carvalho-e-Silva,Carlos Frederico Duarte Rocha +3 more
TL;DR: It is concluded that R. icterica toads at the highlands of Itatiaia feeds on arthropods, mainly ants and coleopterans and that the high consumption of preys with relatively small and similar size as ants in the diet prevents an expected relationship among frog body or mouth size and prey volume and size.
Journal ArticleDOI
Helminth parasites in the toad Rhinella major (Bufonidae) from Chaco region, Argentina
TL;DR: The results suggest that the amount of rainfall and associated humidity affects the distribution and development of the parasite fauna of this toad.
Feeding habits, microhabitat use, and daily activity period of Rhinella ornata (Anura, Bufonidae) from three Atlantic rainforest remnants in southeastern Brazil
TL;DR: Flexibility in prey consumed may result in a low trophic similarity among different populations of R. ornata, and might represent an advantage in environments with varying prey availability.
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06. Niche differentiation of an anuran assemblage in temporary ponds in the Brazilian semiarid Caatinga: influence of ecological and historical factors
Arielson dos Santos Protázio,Ralph Lacerda de Albuquerque,Laura M. Falkenberg,Daniel Oliveira Mesquita +3 more
TL;DR: Although resource use patterns reflect phylogenetic relationships among species, the results suggest that ecological factors such as competition further shaped the studied anuran assemblages.
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Ecology of the bromeligenous frog Phyllodytes luteolus (Anura, Hylidae) from three restinga remnants across Brazil's coast
Tatiana Motta-Tavares,Thiago Maia-Carneiro,Leonardo F. Dantas,Monique Van Sluys,F. H. Hatano,Davor Vrcibradic,Carlos Frederico Duarte Rocha +6 more
TL;DR: Diet, sexual dimorphism and bromeliad use in three populations of the hylid frog Phyllodytes luteolus from restinga habitats along the Brazilian coast suggest this species has a conservative diet independent of area.
References
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Book
The Mathematical Theory of Communication
TL;DR: The Mathematical Theory of Communication (MTOC) as discussed by the authors was originally published as a paper on communication theory more than fifty years ago and has since gone through four hardcover and sixteen paperback printings.
Journal ArticleDOI
Canonical Correspondence Analysis: A New Eigenvector Technique for Multivariate Direct Gradient Analysis
TL;DR: In this article, a new multivariate analysis technique, called canonical correspondence analysis (CCA), was developed to relate community composition to known variation in the environment, where ordination axes are chosen in the light of known environmental variables by imposing the extra restriction that the axes be linear combinations of environmental variables.
BookDOI
Evolution in Changing Environments: Some Theoretical Explorations. (MPB-2)
TL;DR: Professor Levins, one of the leading explorers in the field of integrated population biology, considers the mutual interpenetration and joint evolution of organism and environment, occurring on several levels at once.
Journal ArticleDOI
Resource Partitioning in Ecological Communities
TL;DR: To conclude with a list of questions appropriate for studies of resource partitioning, questions this article has related to the theory in a preliminary way.
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The structure of lizard communities
TL;DR: The topic here is the structure of lizard communities in this somewhat loose sense of the word (perhaps assemblage would be a more accurate description), with emphasis on the niche relationships among such sympatric sets of lizard species, especially as they affect the numbers of species that coexist within lizard communities.