Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Michelin, G.; Ceron, Karoline; Santana, Diego José

doi:10.32800/abc.2020.43.0169

Cited by 8 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At a spatial scale, the sites were dissimilar in composition and abundance of species and morphospecies of prey. It is important to note that differences in habitat use by anuran species affect the type of prey consumed (Toft 1981, Parmelee 1999, Muñoz-Guerrero et al 2007, Duré et al 2009, Isaacs & Hoyos 2010, so that dissimilarities in their diet, at the level of species and morphospecies, could result from the variety of habitats they occupy, and also can be a result of prey availability between seasons and sites (Michelin et al 2020).…”

Section: Spatial-seasonal Diets Dynamicsmentioning

confidence: 99%

“…Studies on the dynamics of resources use have been a subject of interest in ecology, giving rise to numerous concepts related to interspecifi c associations. Numerous studies report the relationship that exists between environmental and spatial variability with trophic ecology (Almeida et al 2019, Ceron et al 2019, Le et al 2019 therefore, any study that attempts to understand the trophic dynamics of the species that inhabit it must include in its analysis both the spatial and temporal fl uctuations of their diets as the level of trophic overlap between taxa, since the diet is mediated by both, habitat type and seasonality; according to this, each type of prey can vary in quantity affecting the overlap (Vitt & Caldwell 2014, Almeida et al 2019, Le et al 2019, Michelin et al 2020.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Anurans trophic dynamic and guild structure in tropical dry forests of the Caribbean region of Colombia

Blanco‐Torres

Duré

Bonilla

2021

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

Studies on the exploitation of trophic resources allow to establish interactions between predators and predator-prey, and this dynamic can present fl uctuations over time and space. We analysed stomach contents of 19 anuran species from tropical dry forests of Colombia, quantifi ed the overlap between species and identifi ed anuran trophic guilds. Most of the species were generalists in diet (89.5%), some with strong prey dominance and only two species were classifi ed as specialists. Two anurans guilds were identifi ed according to diet structure and habitat use: "ground foraging anurans, consuming Formicidae and Isoptera" and "arboreal 'sit-and-wait' predators, primarily consuming arachnids". A considerable number of species did not clearly group in community trophic structure analysis. The level of taxonomic resolution with that preys are worked affects analysis of trophic niches segregation when analyzing regional and local patterns. Anuran species of tropical dry forest in the Colombian Caribbean display trophic resources partitioning at the level of species and/or morphospecies, as a mechanism of coexistence.

show abstract

Section: Spatial-seasonal Diets Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anurans trophic dynamic and guild structure in tropical dry forests of the Caribbean region of Colombia

Blanco‐Torres

Duré

Bonilla

2021

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

show abstract

“…These factors may be related to the non-significance of environmental and spatial models during this season. Besides to provide large areas for breeding the rainy season also provide a great amount of prey to anurans [80], because the composition of invertebrates in an environment change throughout a year in relation to climatic variations, different requirements among species, and life history stages [81]. Thus, the non-significance of environmental and spatial models can be related to the optimal conditions of species during this season, with species not being constrained by environmental or spatial filters.…”

Section: Plos Onementioning

confidence: 99%

Seasonal patterns of ecological uniqueness of anuran metacommunities along different ecoregions in Western Brazil

2020

View full text Add to dashboard Cite

Beta diversity can be portioned into local contributions to beta diversity (LCBD), which represents the degree of community composition uniqueness of a site compared to regionally sampled sites. LCBD can fluctuate among seasons and ecoregions according to site characteristics, species dispersal abilities, and biotic interactions. In this context, we examined anuran seasonal patterns of LCBD in different ecoregions of Western Brazil, and assessed their correlation with species richness and if environmental (climatic variables, pond area and ecoregions) and/or spatial predictors (spatial configuration of sampling sites captured by distance-based Moran's Eigenvector Maps) would drive patterns of LCBD. We sampled anurans in 19 ponds in different ecoregions in the Mato Grosso do Sul state, Western Brazil, during one dry and one rainy season. We found that LCBD patterns were similar between seasons with sites tending to contribute in the same way for community composition uniqueness during the dry and rainy season. Among studied ecoregions, Cerrado showed higher LCBD values in both seasons. In addition, LCBD was negatively correlated with species richness in the dry season. We also found that LCBD variation was explained by ecoregion in the dry season, but in the rainy season both environmental and spatial global models were non-significant. Our results reinforce the compositional uniqueness of the Cerrado ecoregion when compared to the other ecoregions in both seasons, which may be caused by the presence of species with different requirements that tolerate different conditions caused by seasonality.

show abstract

“…2019; Michelin et al . 2020), and the anuran habit can predict what is preyed upon, as they are generalist predators (Vignoli & Luiselli 2012). Conversely, we expect larger anurans to play a central role in the parasite–anuran network since larger anurans can host a greater diversity of parasites (Campião et al .…”

Section: Introductionmentioning

confidence: 99%

“…We expect modular networks, as antagonist interactions tend to form specialized interaction networks (Durán et al 2018), and that specialized network leads to modularity (Dormann & Strauss 2014). Also, the role of anurans as predators will be related to their habit, as the availability of prey is associated with their diet choices (Nadaline et al 2019;Michelin et al 2020), and the anuran habit can predict what is preyed upon, as they are generalist predators (Vignoli & Luiselli 2012). Conversely, we expect larger anurans to play a central role in the parasite-anuran network since larger anurans can host a greater diversity of parasites (Campião et al 2015), and consequently share more connections with other anurans.…”

Section: Introductionmentioning

confidence: 99%

The roles of anurans in antagonistic networks are explained by life‐habit and body‐size

et al. 2021

View full text Add to dashboard Cite

Interactions among living beings are the structuring basis of ecosystems, and studies of networks allow us to identify the patterns and consistency of such interactions. Antagonistic networks reflect the energy flow of communities, and identifying network structure and the biological aspects that influence its stability is crucial to understanding ecosystem functioning. We used antagonistic anuran interactions—predator–prey and host–parasite—to assess structural patterns and to identify the key anuran species structuring these networks. We tested whether anuran body‐size and life‐habit are related to their roles in these networks. We collected individuals of 9 species of anurans from an area of the Atlantic Forest in Brazil and identified their prey and helminth parasites. We used network (modularity, specialization, and nestedness) and centrality metrics (degree, closeness, and betweenness) to identify the role of anuran species in both networks. We then evaluated whether anuran body‐size or life‐habit were related to anuran centrality using generalized linear mixed models. The networks formed specialized interactions in compartments composed by key species from different habits. In our networks, anurans with rheophilic and cryptozoic habit are central in predator‐prey networks, and those with larger body size and arboreal and cryptozoic habit in the host‐parasite network. This study represents a step towards a better understanding of the influential factors that affect the structure of anuran antagonist networks, as well as to recognize the functioning roles of anuran species.

show abstract

Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Cited by 8 publications

References 24 publications

Anurans trophic dynamic and guild structure in tropical dry forests of the Caribbean region of Colombia

Anurans trophic dynamic and guild structure in tropical dry forests of the Caribbean region of Colombia

Seasonal patterns of ecological uniqueness of anuran metacommunities along different ecoregions in Western Brazil

The roles of anurans in antagonistic networks are explained by life‐habit and body‐size

Contact Info

Product

Resources

About