Trophic ecology of two <i>Pithecopus</i> species (Anura: Phyllomedusidae) living in syntopy in southern Bahia, Brazil

Oliveira, Renan M. De; Schilling, Ana Cristina; Solé, Mirco

doi:10.1080/01650521.2018.1485313

Cited by 10 publications

(10 citation statements)

References 59 publications

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“…A ausência de conteúdo estomacal nos indivíduos amostrados durante a estação chuvosa pode estar relacionada a diferenças comportamentais, já que durante este período os espécimes se encontram reproduzindo (De Oliveira e Haddad, 2015). Comportamentos relacionados ao período reprodutivo que podem estar associados a essa espécie podem ter contribuído para o elevado número de estômagos vazios como vocalizações constantes ao longo da noite (17h às 23h, observação pessoal), extensos períodos de imobilidade, ausência de busca ativa por fêmeas e defesa de ninhos (Oliveira et al, 2018).…”

Section: Discussionunclassified

“…Anfíbios ocupam uma importante posição trófica em ecossistemas terrestres e aquáticos por controlar populações, especialmente, de invertebrados, e também por agirem como presas de outros organismos (Wells, 2007). É comum que a dieta de anuros consista principalmente de insetos, porém outras categorias de invertebrados como aracnídeos e miriápodes, têm sido encontradas nos conteúdos estomacais (Batista et al, 2011;Solé et al, 2017;Oliveira et al, 2018).…”

Section: Introductionunclassified

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Diet and morphological aspects of a population of Pseudopaludicola pocoto (Anura: Leptodactylidae) from Northeast Brazil

Silva¹,

Sousa

Lima

et al. 2018

Neotropical Biology and Conservation

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This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0), which permits reproduction, adaptation, and distribution provided the original author and source are credited. Resumo Os recursos alimentares representam uma porção importante do nicho trófico, sendo um determinante importante na estruturação de comunidades em qualquer grupo filogenético. Dessa forma, objetivamos contribuir com informações ecológicas sobre a composição da dieta, amplitude de nicho trófico e tamanho corpóreo de Pseudopaludicola pocoto em uma área de Caatinga do nordeste brasileiro. As coletas foram realizadas durante as estações de seca (setembro de 2015) e chuvosa (fevereiro de 2016), quando foram coletados e analisados 120 espécimes de P. pocoto. Registramos a dieta do período seco composta por treze categorias de presas, sendo Coleoptera e Hemiptera as categorias de maior importância relativa. A amplitude de nicho trófico (Bsta = 0,18) indica que P. pocoto é consumidor especialista. Todos os indivíduos coletados durante a estação chuvosa não apresentaram conteúdo estomacal. Além disso, não foram observadas diferenças significativas entre os tamanhos corpóreos de machos e fêmeas. Futuros trabalhos que abordem a reprodução dessa espécie são estimulados, pois podem contribuir para a compreensão de fenômenos como a ausência de conteúdo estomacal durante o período reprodutivo e, por fim, comprovarem ou não a hipótese de estivação nessa espécie.

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Section: Discussionunclassified

Section: Introductionunclassified

Diet and morphological aspects of a population of Pseudopaludicola pocoto (Anura: Leptodactylidae) from Northeast Brazil

Silva¹,

Sousa

Lima

et al. 2018

Neotropical Biology and Conservation

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“…Individual consumers and community trophic structure also respond to variation in resource availability (e.g. Oliveira et al 2018). For instance, resource availability influences the number of trophic links in local food webs as well as resource and consumer contributions to energy flow within the network (Winemiller 1990;Dalerum et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Frogs are considered good models for trophic ecology studies because they have diverse life histories and, in many cases, play key roles in the flow of energy between aquatic and terrestrial habitats (Kupfer et al 2006). Most studies of frog trophic ecology have relied on stomach contents analysis (SCA; Leivas et al 2018;Oliveira et al 2018). While effective, this technique also has some limitations, such as difficulty to identify prey items in advanced stages of digestion and uncertainty regarding the proportion of ingested material that actually is assimilated by the consumer (Jepsen & Winemiller 2002).…”

Section: Introductionmentioning

confidence: 99%

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Trophic structure of frog assemblages in coastal habitats in southern Brazil

et al. 2020

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We evaluated the hypothesis that contrasting environmental conditions in a coastal wetland and nearby sand dunes results in frog assemblages with divergent trophic structures. We predicted that the more productive habitat (wetland) would have higher diversity of primary producers and frogs with larger trophic niches and greater interspecific dietary overlap when compared to the less-productive dune habitat. Stomach content analysis (SCA) and stable isotope analysis (SIA) were used to compare frog trophic ecology in the two habitats. We compared trophic niche size (Shannon's index) and overlap (Pianka's index; isotopic ellipse area, SEA c). Bayesian isotope mixing models were used to estimate relative contributions of basal production sources to frog biomass in each habitat. Estimates indicated that wetland frogs assimilated material from diverse basal sources (suspended particulate organic matter (POM), C 3 plants, periphyton), whereas frogs inhabiting dunes assimilated material mostly originating from C 3 plants. Both SCA and SIA revealed less trophic overlap among frogs from the sand dunes compared with those from the wetland. Dietary overlap was greater than expected at random for frogs in both the wetland and dunes. Mean overlap among isotopic ellipses (SEAc) of all frogs at each habitat was higher in the wetland (0.14&) than in the dunes (0.04&). These findings corroborate our prediction that trophic structure in the wetland is more complex than in the sand dunes. Also, as expected, we observed greater isotopic niche segregation among frogs in the sand dunes, a potential mechanism that reduces competition for limited food resources.

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Diet and observations on natural history of Gabohyla pauloalvini (Bokermann 1973) (Amphibia: Hylidae), a poorly known species from cacao agroforestry in southern Bahia, Brazil

et al. 2021

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Trophic ecology of two Pithecopus species (Anura: Phyllomedusidae) living in syntopy in southern Bahia, Brazil

Cited by 10 publications

References 59 publications

Diet and morphological aspects of a population of Pseudopaludicola pocoto (Anura: Leptodactylidae) from Northeast Brazil

Diet and morphological aspects of a population of Pseudopaludicola pocoto (Anura: Leptodactylidae) from Northeast Brazil

Trophic structure of frog assemblages in coastal habitats in southern Brazil

Diet and observations on natural history of Gabohyla pauloalvini (Bokermann 1973) (Amphibia: Hylidae), a poorly known species from cacao agroforestry in southern Bahia, Brazil

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