Trophic ecology of an assemblage of anurans from the Amazonian savanna in Amapá, Brazil.
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| Title: | Trophic ecology of an assemblage of anurans from the Amazonian savanna in Amapá, Brazil. |
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| Authors: | Eduardo COSTA-CAMPOS, Carlos1 dududueducampos@gmail.com, Dantas SALES, Raul Fernandes2, Xavier FREIRE, Eliza Maria2 |
| Source: | North-Western Journal of Zoology. Dec2024, Vol. 20 Issue 2, p151-155. 5p. |
| Document Type: | Article |
| Subjects: | Foraging behavior, Natural history, Gastrointestinal contents, Hylidae, Leptodactylidae |
| Author-Supplied Keywords: | Amphibia diet natural history niche breadth niche overlap |
| Abstract: | This study describes the diet and trophic ecology of anurans from the Amazonian savanna in Amapá (Brazil). A total of 17 anuran species were collected (three bufonids, eight hylids, five leptodactylids, and one phyllomedusid), and their stomach contents revealed 17 prey items. Coleoptera, Hemiptera, and Acari had high indices of relative importance (IRI). Boana multifasciata exhibited the most diversified diet (11 prey). The trophic niche overlap was low (0.42), and trophic niche breadth varied between 0.31 (Rhinella major) and 1 (Leptodactylus podicipinus), suggesting generalist feeding behavior for these species. The null models indicated that the observed values differed significantly from expected values, demonstrating resource partitioning amongst anuran species in the Amapá Amazonian savanna, where competition does not seem to be the structuring agent. Group analysis among species revealed two main groups. Leptodactylus macrosternum and Dendropsophus walfordi showed the highest similarity of diet composition, while Leptodactylus pentadactylus and Boana raniceps showed the most dissimilar diet composition compared to other species. Anurans from the Amapá Amazonian savanna used various categories of prey, had high values of niche breadths, and overlapped on some of the most important categories of arthropods, coexisting in the same environment and can present different ways of accessing food resources influenced by the abundant prey and foraging behavior. This is the first study evaluating the diet of Brazilian frogs in the Amazonian savanna. [ABSTRACT FROM AUTHOR] |
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| Author Affiliations: | 1Laboratório de Herpetologia, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Campus Marco Zero do Equador, 68903-419, Macapá, Amapá, Brazil 2Laboratório de Herpetologia, Departamento de Botânica, Ecologia e Zoologia, Universidade Federal do Rio Grande do Norte, Campus Central, 59.072-970, Natal, Rio Grande do Norte, Brazil |
| ISSN: | 1584-9074 |
| Accession Number: | 182004885 |
| Database: | Veterinary Source |
| Abstract: | This study describes the diet and trophic ecology of anurans from the Amazonian savanna in Amapá (Brazil). A total of 17 anuran species were collected (three bufonids, eight hylids, five leptodactylids, and one phyllomedusid), and their stomach contents revealed 17 prey items. Coleoptera, Hemiptera, and Acari had high indices of relative importance (IRI). Boana multifasciata exhibited the most diversified diet (11 prey). The trophic niche overlap was low (0.42), and trophic niche breadth varied between 0.31 (Rhinella major) and 1 (Leptodactylus podicipinus), suggesting generalist feeding behavior for these species. The null models indicated that the observed values differed significantly from expected values, demonstrating resource partitioning amongst anuran species in the Amapá Amazonian savanna, where competition does not seem to be the structuring agent. Group analysis among species revealed two main groups. Leptodactylus macrosternum and Dendropsophus walfordi showed the highest similarity of diet composition, while Leptodactylus pentadactylus and Boana raniceps showed the most dissimilar diet composition compared to other species. Anurans from the Amapá Amazonian savanna used various categories of prey, had high values of niche breadths, and overlapped on some of the most important categories of arthropods, coexisting in the same environment and can present different ways of accessing food resources influenced by the abundant prey and foraging behavior. This is the first study evaluating the diet of Brazilian frogs in the Amazonian savanna. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 15849074 |