Diet and Trophic Niche of Two Sympatric Physalaemus Species in Central Brazil

Gambale, Priscilla Guedes; Silva, Marlene Rodrigues da; Oda, Fabrício Hiroiuki

doi:10.2994/sajh-d-17-00100.1

Cited by 4 publications

(2 citation statements)

References 53 publications

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“…Due to similarities in resource use, competition is expected to be greater between phylogenetically close species and that this process will lead to congeneric species generally not occurring in sympatry (Violle et al., 2011; Webb et al., 2002). However, some studies have questioned this prediction, showing that in some groups, closely related species occur in sympatry (Gambale et al., 2020; Moser et al., 2018; Zainudin et al., 2017). Although niche overlap increases interspecific competition, competitive exclusion depends on species differences in fitness‐related traits (HilleRisLambers et al., 2012; Letten et al., 2017), and niche‐related and fitness‐related traits may not depend strongly on phylogenetic relatedness (Godoy et al., 2014).…”

Section: Discussionmentioning

confidence: 99%

How environmental factors affect the abundance and distribution of two congeneric species of Amazonian frogs

Moreno,

Pequeno,

Santorelli Junior

et al. 2023

Biotropica

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In this study, we test the hypothesis that, at a fine‐scale, environmental variables influence differently sister species that live in sympatry and are phylogenetically closely related. We sampled two Amazonian anuran species, Phyzelaphryne miriamae and Phyzelaphryne sp., in 11 permanent sampling modules distributed across ~600 km in the Purus‐Madeira Interfluve between 2013 and 2014. Using mixed generalized linear models, we found that the species have distinct environmental associations, which may facilitate their coexistence in sympatry. Phyzelaphryne miriamae was more frequent in environments with low precipitation and low water tables, suggesting this species is better adapted to live in drier places. In contrast, Phyzelaphryne sp. appeared to be a generalist regarding to habitat and resource use. These patterns are in accordance with the hypothesis that environmental variables influence sister species differently on a fine scale. Phyzelaphryne miriamae is larger than Phyzelaphryne sp., which may make it more resistant to dehydration, allowing it to explore drier environments. In conclusion, our results are in concordance with the hypothesis that the evolution of characteristics resulting from selection may have reduced competition for resources between closely related species, thus facilitating coexistence in sympatry.Abstract in Portuguese is available with online material.

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Section: Discussionmentioning

confidence: 99%

How environmental factors affect the abundance and distribution of two congeneric species of Amazonian frogs

Moreno,

Pequeno,

Santorelli Junior

et al. 2023

Biotropica

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“…When two species occupy the same habitat, a competition for food resources and a segregation of the trophic niches is expected to occur, especially when resources are scarce (Hardin 1960). Indeed, similar species that show allopatric distributions usually exploit the same resources (Lopes et al 2020), whereas some degree of trophic niche segregation takes place when they live in sympatry (Gambale et al 2020). In sympatric raptor species, interspecific competition is indeed a major source of exclusion (Newton 1979).…”

Section: Introductionmentioning

confidence: 99%

Diet of sympatric Barn Owls Tyto alba and Short-eared Owls Asio flammeus in an agricultural landscape in south-east Spain

Jiménez-Nájar¹,

Garrido-Bautista²,

Tarifa³

et al. 2021

Ornis Svec

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The diets of the Barn Owl Tyto alba and the Short-eared Owl Asio flammeus have been extensively studied worldwide over the past few years, especially on the Iberian Peninsula. Nevertheless, very few studies have examined the diets and the trophic niche overlap in areas where these two raptor species occur in sympatry. As such, in this study we compared the diets of the Barn Owl and the Short-eared Owl inhabiting agricultural landscapes of the Vega de Granada, south-east Spain, based on pellet analysis. The diets were very similar, as both owls preyed mainly on small mammals, the Algerian Mouse Mus spretus being the prey most commonly found in pellets from both species. Although the diet of the Barn Owl was more diverse than that of the Short-eared Owl, the food niche overlap was very high, thus indicating a low interspecific trophic segregation. Despite the similarities between both diets, the frequency of the Mediterranean Pine Vole Microtus duodecimcostatus was much higher in pellets from the Barn Owl, thus suggesting that the Barn Owl may exert pest control in years when the Mediterranean Pine Vole occurs in high numbers.

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Conspicuous and cryptic poison frogs are picky and prefer different meals in syntopy

Sánchez-Loja,

Donoso,

Páez-Vacas

2023

Evol Ecol

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Diet and Trophic Niche of Two Sympatric Physalaemus Species in Central Brazil

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 4 publications

References 53 publications

How environmental factors affect the abundance and distribution of two congeneric species of Amazonian frogs

How environmental factors affect the abundance and distribution of two congeneric species of Amazonian frogs

Diet of sympatric Barn Owls Tyto alba and Short-eared Owls Asio flammeus in an agricultural landscape in south-east Spain

Conspicuous and cryptic poison frogs are picky and prefer different meals in syntopy

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