ABSTRACT. Autoecology of Hypsiboas albopunctatus (Anura, Hylidae) in an area of Cerrado in southeast of Brazil. Herein we present new data on the breeding activity of the Neotropical treefrog H. albopunctatus. Data was collected in the Municipality of Uberlândia, Minas Gerais State, Brazil. Behavioral events were observed focally. We determined the pattern of spatial distribution of the tadpoles. We compared abundance of tadpoles in lakes and swamps and correlated it with variation in depth, amount of vegetable substratum and number of arthropods through a Principal Component Analysis. We tested the palatability of eggs and tadpoles for two species of teleosts. Males vocalized in almost all months of the year. Males were smaller than the females and presented one spine in each prepolex. Amplexus was alternated between axillary and tympanic types. Clutches averaged 769 eggs and were laid floating in a single layer. Tadpole coloration changed ontogenetically from black to tan. Eggs were not consumed by the two tested species of teleosts, but the tadpoles yes. Tadpoles had an aggregated distribution in their habitats. The swamps presented larger number and mass of tadpoles. Only in the lakes there was a positive correlation between the abundance of tadpoles and depth, amount of plant substratum and arthropods. The almost continuous reproduction of H. albopunctatus along the year is a rare behavior among frogs of southeastern Brazil. Tadpoles were more abundant in the swampy probably due to absence of predators such as teleosts. Unpalatable eggs and the use of refuges by the tadpoles may be the mechanisms allowing reproduction of H. albopunctatus in habitats with predatory teleosts. KEYWORDS.Hypsiboas albopunctatus, reproduction, abundance, teleosts, palatability. RESUMO. Neste estudo, descrevemos aspectos da biologia reprodutiva de H. albopunctatus. Coletamos os dados no município deUberlândia (MG), Brasil. Eventos comportamentais foram observados focalmente. Determinamos o padrão de distribuição espacial dos girinos. Comparamos a abundância de girinos em lagos e brejos, correlacionando-a com profundidade, quantidade de substrato vegetal e número de artrópodes através de uma Análise de Componentes Principais. Testamos a palatabilidade de ovos e girinos para duas espécies de teleósteos. A atividade de vocalização ocorria em praticamente todos os meses do ano. Os machos eram menores que as fêmeas e tinham um espinho em cada prepolex. O amplexo foi alternado entre os tipos axilar e timpânico. As desovas (média de 769 ovos) foram postas à superfície da água em uma monocamada. Girinos recentes eram pretos, porém tornavam-se acobreados ao longo do desenvolvimento. Diferentemente dos girinos, os ovos foram impalatáveis para os teleósteos testados. Os girinos eram mais abundantes nos brejos e se distribuíam de forma agregada no ambiente. Somente nos lagos houve correlação positiva entre a abundância de girinos e profundidade, número de artrópodes e quantidade de substrato vegetal. A reprodução da espécie quase continua ao ...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.