Feeding ecology of endemic frogs of the Atlantic Forest in southern Brazil

Moser, Camila Fernanda; Farina, Renata K.; Dudczak, Amanda Caroline; Tozetti, Alexandro Marques; Lingnau, Rodrigo

doi:10.1590/0001-3765202220210282

Cited by 6 publications

(1 citation statement)

References 40 publications

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“…Although the divergence in feeding habits favors the coexistence of sympatric organisms, closely related species tend to use resources in a similar way (Pianka, 1973) since they are similar in physiology and often in morphology and behavior as well (Heyer et al, 1990). The number of studies on the diet of Neotropical anurans has increased in recent years (Siqueira et al, 2006, Dietl et al, 2009, Rodrigues and Santos-Costa, 2014, Moser et al 2017Oliveira et al 2017, Dias et al 2018, Farina et al 2018, Moser et al 2019, Protázio et al 2019, Oliveira et al 2021, Moser et al 2022. However, few studies focus on a comparative approach to the species' diet (Oliveira et al, 2015, Moser et al, 2017.…”

Section: Introductionmentioning

confidence: 99%

Diet and trophic niche overlap of four syntopic species of Physalaemus (Anura: Leptodactylidae) in southern Brazil

et al. 2023

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Despite the current increase in studies on the diet of neotropical anurans, few of them take a comparative approach between syntopic species. The objective of this study was to compare the diet of four syntopic species of the genus Physalaemus. The collections occurred between November 2014 and January 2016 in a preserved area of the subtropical Atlantic Forest in southern Brazil. We compared the gastrointestinal content of 109 individuals distributed in the species Physalaemus biligonigerus, P. cuvieri, P. gracilis and P. henselii. We measured the Index of Relative Importance of each prey category and calculated trophic niche breadth using the Levins’ index (Bsta) and trophic niche overlap using the Pianka’s index (Ojk). We also applied compositional analysis to evaluate feeding specializations. Formicidae was the most important prey category for P. biligonigerus (IRI = 88.5%) and P. gracilis (IRI = 39.1%). For P. henselii and P. cuvieri, the most important category was Isopoda (IRI = 51.7% and 57.9%, respectively), followed by Formicidae (IRI = 34.9% and 24.8%). Isopoda was also important in the diet of P. gracilis (IIR = 28.6%), followed by Araneae (IIR = 22.6%). The trophic niche breadth of the four species was narrow, all smaller than 0.32, and the lowest was recorded for P. biligonigerus (0.04). The trophic niche overlap was higher between P. biligonigerus and P. cuvieri (96%), and between P. gracilis and P. henselii (95%). Only P. gracilis presented a significant level of feeding specialization. The differences in their diets suggest different uses of the resources, which could relate to different ways of exploring the microhabitat.

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Section: Introductionmentioning

confidence: 99%

Diet and trophic niche overlap of four syntopic species of Physalaemus (Anura: Leptodactylidae) in southern Brazil

et al. 2023

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Unveiling the Diet Composition of Trachycephalus typhonius (Linnaeus, 1758) from a Relictual Mountain in Brazilian Semiarid

Clarice Maria de Araújo-Silva,

de Castro Araújo,

Ávila

et al. 2024

Biol Bull Russ Acad Sci

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Feeding ecology, reproductive biology, and sexual dimorphism of <i>Boana raniceps</i> (Anura: Hylidae) in an area of Caatinga, northeastern Brazil

Machado,

Silva,

Benício

et al. 2023

Caldasia

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The number of studies on the ecology of the genus Boana is vast in Brazilian biomes. Among the different species of this genus, B. raniceps is considered a common and widely distributed species. Despite this, only a few studies have explored the ecology of this species in the Caatinga biome. In this study we present information on the diet composition, reproduction, and sexual dimorphism of B. raniceps in the Caatinga biome, northeastern Brazil, providing additional information about the natural history of the species. We observed that B. raniceps has a generalist diet, consuming a great diversity of prey categories, but with a numerical and volumetric prevalence of Coleoptera. Interestingly, there was an ontogenetic and sexual variation in the diet, with the Relative Importance Index (RII) for each prey category differed between males, females, and juveniles. Females were found bearing mature eggs in both the rainy and dry seasons. The number of eggs carried by each female ranged from 153 to 3904. There was sexual dimorphism in body size, with females larger than males. However, size was not a limiting factor in fecundity. Here, we present new information on the natural history of B. raniceps and reinforce the need for further studies with widely distributed and known species. This is the first study to demonstrate ontogenetic and sexual variation in the diet of anurans of the genus Boana.

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Feeding ecology of endemic frogs of the Atlantic Forest in southern Brazil

Cited by 6 publications

References 40 publications

Diet and trophic niche overlap of four syntopic species of Physalaemus (Anura: Leptodactylidae) in southern Brazil

Diet and trophic niche overlap of four syntopic species of Physalaemus (Anura: Leptodactylidae) in southern Brazil

Unveiling the Diet Composition of Trachycephalus typhonius (Linnaeus, 1758) from a Relictual Mountain in Brazilian Semiarid

Feeding ecology, reproductive biology, and sexual dimorphism of <i>Boana raniceps</i> (Anura: Hylidae) in an area of Caatinga, northeastern Brazil

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