212 resultados para Anurans


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The vocals are the most conspicuous means of communication between frogs and can express evolutionary relationships among species. Call descriptions of frogs, in general, not standard acoustic parameters which are greatly diversified and usually restricted to comparisons between closely related taxa. The Atlantic Forest is considered one of the biodiversity hotspots of the world, however, it appears that the number of species to be known is still very large. To anurans from this Brazilian Domain, vocalizations are complex and can vary intra and interpopulations. Thus, we presented a quantitative and qualitative analysis of the work descriptions of anuran advertisement call from the Atlantic Forest, available in the literature so far. The frog species from this Domain and their descriptions of the advertisement call have been raised in the literature, organized into families and threat category IUCN Red List Threatened Species. The analysis of the descriptions were made based on the presence of preset parameters. It was observed that the species which the advertisement call is described within the standard are expected within the Brazilian Atlantic Domain, but efforts to describe the advertisement call of frogs of the Atlantic are concentrated in non-threatened species. Among the descriptions works, there is a large discrepancy between the information presented, giving preference to the use of abiotic data in this kind of work, to the detriment of biotic data about choir where the songs were recorded. The results point to the need for advancements in the descriptions of the advertisement of endangered species or to those with deficient information on their conservation status in the Atlantic Forest, and also for greater communication between works that describe vocalizations of frogs. It will be important to know about the state of the art of descriptions works of frogs in other Brazilian Domains, and relate this information with knowledge...

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Natural history studies aim to know where the organisms live, what they do, and their relationships within the environment, including the other organisms. The anurans, among other vertebrates, exhibits the greatest variety of reproductive modes as well as a high complexity of social organization, that may enable a lot of naturalist studies. Anurans modes of organization are direct related to parental care, vocalization of chorus organization, and with males territoriality. In general, the social organization is influenced by species reproductive pattern. This study aim to get information about the natural history of Hypsiboas albopunctatus (perereca-cabrinha) a species of the family Hylidae, on the region of Rio Claro Municipality, São Paulo State, Brazil. The major aspects discussed were: seasonality, spatial distribution, acoustic and visual communication, reproductive mode, reproductive site, abiotic factors influences, territoriality, courtship behaviour, satellite male behavior, embrace and defensive behavior. To obtain this data, nocturnal field excursions were realized monthly. Two sites of Rio Claro county where chosen as studies sites, the sítio Cantaclaro (22o19’36’’S; 47o42’57’’O), on the District of Itapé and Floresta Estadual Edmundo Navarro de Andrade (FEENA) (22o24’58’’S; 47o31’26’’O).

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With the degradation of Atlantic Forest over the years, the area that this ecosystem has occupied before decreased and in a lot of cases it was separated in little fragments, each one isolated in a different way depending of the local antropic action. In this context, this study compares the helminth fauna of anurans from two different fragments of Atlantic Forest, one inset in a matrix of eucalyptus (Eucaliptus sp.) reforestation and the other in a matrix of pasture (Brachiaria sp.), verifying if there is any difference between the structure of helminth communities. There were collected 155 anurans in both fragments, being 77 Hypsiboas albopunctatus, 18 Hypsiboas faber, 27 Hypsiboas polytaenius e 33 Dendropsophus minutus. These were weighted and their snout-vent lengths were measured. After the animals were euthanatized and their internal organs and coelomatic cavity were evaluated for helminth infection. There were identified one trematode species (Haematoloechus fuelleborni) and 14 nematode species (Aplectana sp., Cosmocerca parva, Cosmocerca sp1., Cosmocerca sp2., Cosmocercoides sp., Falcaustra mascula, Cosmocercidae larvae, nematode larvae, Physaloptera sp. larvae, Ochoterenella sp., Oswaldocruzia subauricularis, Raillietnema simples, Rhabdias sp. e Schrankiana sp.). The hylids' helminth fauna studied in São Luiz do Paraitinga fragments were relatively rich, being registered 15 helminth species in the captured anurans. The comparison between the fragments did not show differences in relation of the composition and abundance of helminth fauna in spite of the individualities of each environment

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Biotecnologia - IQ

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Biologia Animal - IBILCE

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)