Results 11 to 20 of about 15,494 (110)
Foram examinados 1.069 indivíduos de 13 espécies de membracídeos coletados em suas plantas hospedeiras, entre agosto de 2004 e setembro de 2005, em uma região do semi-árido da Paraíba, Nordeste do Brasil. Enchenopa concolor (Fairmaire, 1846) (31,6%) e E.
Antonio J. Creão-Duarte +2 more
doaj +1 more source
Seasonal dietary niche contraction in coexisting Neotropical frugivorous bats (Stenodermatinae)
Abstract Tropical dry forests are characterized by punctuated seasonal precipitation patterns that drive primary production and the availability of fruits, seeds, flowers, and insects throughout the year. In environments in which the quantity and quality of food resources varies seasonally, consumers should adjust their foraging behavior to maximize ...
Jeremy Ryan Shipley, Cornelia W. Twining
wiley +1 more source
Cuniculus taczanowskii es una especie típica de la región andina amenazada por factores, como la fragmentación del paisaje y la cacería. El presente trabajo, se desarrolló con el objetivo de establecer la amplitud de nicho, la selección alimentaria, la relación entre la frecuencia de ocurrencia de los ítems alimentarios recuperados en materia fecal y ...
Karin Osbahr +2 more
openaire +3 more sources
Trophic structure of fish fauna along the longitudinal gradient of a first-order rural stream
Aim: This study evaluated the trophic structure of the fish assemblage along the longitudinal gradient of a first-order rural stream. Methods Fish were sampled by electrofishing technique in December 2007, September 2008 and March 2009, at three stretch
Jardel Nimet +3 more
doaj +1 more source
The present study was based on the analysis of spraints (n = 294) collected between December 2005 and November 2007. The importance of each type of prey was determined by absolute and relative frequency. Niche breadth was also estimated. The results were
Kleisson S. Souza +2 more
doaj +1 more source
As atividades antrópicas têm alterado profundamente os ambientes naturais e muitas vezes afetado a diversidade e distribuição dos anuros. O objetivo deste estudo foi investigar as seguintes questões: (1) qual a composição da anurofauna em uma região de ...
Tiago Gomes dos Santos +2 more
doaj +1 more source
The objective of this study was to analyze the diet of fish species that use the mangrove vegetation for shelter and feeding in a river southeastern Brazil. The fieldwork, including collecting and underwater observations, was carried out in the dry (July
Michéle de O. D. A. Corrêa +1 more
doaj +1 more source
A Região Neotropical possui um elevado número de espécies de peixes de água doce, cujas adaptações para explorar diferentes tipos de alimento é particularmente evidente em reservatórios, refletindo numa considerável plasticidade alimentar.
Tatiane N. Medeiros +3 more
doaj +1 more source
The literature on species abundance models is extensive and a great deal of new and important contributions have been published in the last three decades.
FC. Ferreira, M. Petrere-Jr.
doaj +1 more source
First Record of Pseudomyrmex acanthobius Emery in Brazilian Pantanal
. Associations between ants and plants may be described, in some cases, as mutualisms. Ants use plant structures as sites for nesting and in return they offer protection against herbivory.
Rodrigo Aranda +2 more
doaj +1 more source

