Feeding Overlap
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. Contrasting life-histories in two syntopic amphibians of the Leptodactylus fuscus group (Heyer 1978)
Abstract Abstract: We used skeletochronology to compare age, size, reproductive parameters and growth patterns of two related, anuran amphibians from Northern Argentina: Leptodactylus bufonius(n=69) andL. latinasus(n=56), in order to better understand their coexistence in syntopy. Previous studies showed that the two species overlap in their dietary requirem
An. Acad. Bras. Ciênc.. Publicado em: 29/07/2019
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2. Diet and resource sharing by two Pimelodidae species in a Southeastern Brazilian reservoir
Resumo: Os peixes podem variar suas dietas e dinâmicas alimentares de acordo com fatores bióticos e abióticos. O conhecimento insuficiente desses fatores em reservatórios limita o manejo dessas áreas. O objetivo deste estudo foi determinar a dieta de duas espécies de peixes aparentados e mais coletados; verificar a influência de fatores bióticos e ab
Biota Neotrop.. Publicado em: 06/06/2019
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3. Hábitos alimenticios de poblaciones periféricas de Zaedyus pichiy y Chaetophractus villosus (Cingulata, Chlamyphoridae) en la Patagonia chilena
ABSTRACT In Chile the armadillos Zaedyus pichiy (Desmarest, 1804) and Chaetophractus villosus (Desmarest, 1804) have peripheral populations restricted to steppes and plains near western slopes of the Andes, being also inadequately studied. We present information on feeding habits of both species by analysis of feces obtained in two study areas of Aysén dist
Iheringia, Sér. Zool.. Publicado em: 08/05/2017
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4. The partitioning of food resources between two rodents in the subtropical region of southern Brazil
ABSTRACT The capybara (Hydrochoerus hydrochaeris) and nutria (Myocastor coypus) are herbivorous semi-aquatic rodents. Although these rodents occur in sympatry in southern South America, little is known about how the two species interact in relationship to food resources. In this context, the aim of this study was to analyze the food resource overlap, the fee
An. Acad. Bras. Ciênc.. Publicado em: 2017-03
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5. Long-wavelength sensitive opsin (LWS) gene variability in Neotropical cichlids (Teleostei: Cichlidae)
ABSTRACT Cichlid fishes are an important group in evolutionary biology due to their fast speciation. This group depends widely of vision for feeding and reproduction. During the evolutionary process it plays a significant role in interspecific and intraspecific recognition and in its ecology. The molecular basis of vision is formed by the interaction of the
An. Acad. Bras. Ciênc.. Publicado em: 2017-03
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6. Feeding ecology of the common bottlenose dolphin, Tursiops truncatus, in southern Brazil: analyzing its prey and the potential overlap with fisheries
Braz. j. oceanogr.. Publicado em: 2016-12
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7. 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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8. The feeding habits of the eyespot skate Atlantoraja cyclophora (Elasmobranchii: Rajiformes) in southeastern Brazil
The stomach contents of the eyespot skate, Atlantoraja cyclophora (Regan, 1903), were examined with the goal to provide information about the diet of the species. Samples were collected off the southern coast of Rio de Janeiro, Brazil, near Ilha Grande, between January 2006 and August 2007, at a depth of about 60 m. The diet was analyzed by sex, maturity sta
Zoologia (Curitiba). Publicado em: 2014-04
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9. Feeding ecology of stream-dwelling Characidae (Osteichthyes: Characiformes) from the upper Tocantins River, Brazil
In this contribution we studied the trophic ecology of four Characidae species from the Cavalo Stream, upper Tocantins River, considering diet overlap and trophic niche breadth. The diet of the four species was composed of adult and immature insects, both autochthonous and allochthonous in origin. Autochthonous items dominated the diet of Moenkhausia dichrou
Zoologia (Curitiba). Publicado em: 06/12/2013
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10. Diet and functional feeding groups of Chironomidae (Diptera) in the Middle Paraná River floodplain (Argentina)
The gut contents of nine genera of benthic Chironominae and Tanypodinae from the Middle Paraná River floodplain habitats (a lake and a secondary channel) were analyzed to determine their feeding patterns and functional feeding groups. Amorphous detritus, animal and vegetal tissues, and mineral materials (predominantly sand) were observed in the larval guts.
Iheringia. Série Zoologia. Publicado em: 2012-06
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11. What can we learn from confusing Olivella columellaris and O. semistriata (Olivellidae, Gastropoda), two key species in panamic sandy beach ecosystems?
Olivella columellaris (Sowerby 1825) and O. semistriata (Gray 1839) are suspension-feeding, swash-surfing snails on tropical sandy beaches of the east Pacific. While they often are the numerically dominant macrofaunal element in their habitats, their biology is poorly understood; the two species actually have been confused in all of the few publications that
Biota Neotrop.. Publicado em: 2012-06
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12. Food niche overlap between two sympatric leaf-litter frog species from Central Amazonia
We studied the feeding habits and similarities in the diet of two sympatric and syntopic Amazonian frog species, Anomaloglossus stepheni (Aromobatidae) and Leptodactylus andreae (Leptodactylidae) in a forested area in Central Amazonia. The breadth of the trophic niche of these species was 5.89 and 3.75, respectively, and approximately 85% of their diets were
Zoologia (Curitiba). Publicado em: 2012-02