The small lizards of the genus Loxopholis inhabit the leaf litter of Central and South America tropical forests. The genus includes 10 bisexual species and the unisexual L. percarinatum, the latter widely distributed ...

Ameivula nativo is the only parthenogenetic lizard of its genus and endemic to the restingas of Espírito Santo and southern Bahia. It is considered as "Endangered" in the List of Threatened Species of Extinction, because ...

The brown-throated sloth (Bradypus variegatus) is a widely distributed mammal in the forests of Central and South America. Although listed as not threatened, recent studies point to the need for a better understanding of ...

Geographic distribution models and conservation status of two endangered species of Rhipsalis (Cactaceae) in the Atlantic Forest. The Rhipsalis (Cactaceae) is the most abundant genus among all the epiphytic cactus. This ...

Bird vocalizations are important signals in specific recognition, mediating territorial competition as well as female choice. In birds, population divergence in vocalizations can act as barriers to gene flow, leading to ...

Although the processes involved in searching, digestion and absorption of the food involve high energy investment, the low maintenance cost of some ectothermic vertebrates allows feeding to occur at irregular intervals. ...

The family Buthidae family is the largest within the order Scorpiones, with approximately 90 genera and 1,100 species. The genus Tityus is the richest, including more than 220 species distributed in Central and South ...

Acalypha L. is the third largest genus of Euphorbiaceae, with approximately 450 species. The genus is represented on almost all continents and its greatest diversity is reported to the Neotropics. In Brazil, Acalypha has ...

The diversity of habitats along a geographic gradient imposes selective pressures that result in differences in the life history of individuals of the same species. In ectothermal animals, such as anuran amphibians, climatic ...

The evidence of acoustic variation among animal populations has inspired scientists to inquire about the evolutionary and ecological mechanisms that shape the divergence of songs and that have led to the emergence of ...