Publications (13) View all
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Article: A new species of Ischnocnema from highlands of the Atlantic Forest, Southeastern Brazil (Terrarana, Brachycephalidae)
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ABSTRACT: A new species of Ischnocnema is described from Serra da Mantiqueira, Municipality of Campos do Jordão, State of São Paulo, Brazil. The new species is a member of the Ischnocnema lactea Species Series. The new species differs from other species in the Ischnocnema lactea Species Series by its small size, snout sub-elliptical in dorsal view and acuminate-rounded in lateral view, and advertisement call. Descriptions of the dorsal coloration, advertisement call, and natural history are presented.Zootaxa 01/2010; 3(2617):55-65. · 0.93 Impact Factor -
Article: Amphibia, Anura, Cycloramphidae, Odontophrynus moratoi : Distribution extension and advertisement call
Check List. 01/2008; -
Article: The tadpole of Physalaemus jordanensis Bokermann, 1967 (Anura, Leiuperidae) from Campos do Jordão, Serra da Mantiqueira, Southeastern Brazil
Zootaxa. 01/2010; 2327:65-68. -
Article: The karyotype of three Brazilian Terrarana frogs (Amphibia, Anura) with evidence of a new Barycholos species.
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ABSTRACT: A recent substantial rearrangement of the 882 described eleutherodactyline frog species has considerably improved the understanding of their systematics. Nevertheless, many taxonomic aspects of the South American eleutherodactyline species remain unknown and require further investigation using morphological, cytogenetic and molecular approaches. In this work, the karyotypes of the Brazilian species Ischnocnema juipoca (Atibaia and Campos do Jordão, SP), Barycholos cf. ternetzi (Uberlândia, MG, and Porto Nacional, TO), and Pristimantis crepitans (Chapada dos Guimarães and São Vicente, MT) were analyzed using Giemsa staining, Ag-NOR labeling, and C-banding techniques. All individuals had a diploid number of 22 chromosomes, but the Fundamental Numbers were different among species. The herein described low chromosome number of Pristimantis crepitans is unique within this genus, suggesting that cytogenetically this species is not closely related either to its congeneric species or to Ischnocnema. In addition, karyotype differences, mainly in the NOR position, clearly distinguished the two Barycholos populations, besides indicating the existence of a so far undescribed species in this genus. A taxonomic review could clarify the systematic position of P. crepitans and verify the hypothetic new Barycholos species.Genetics and Molecular Biology 07/2009; 32(3):470-6. · 0.63 Impact Factor -
Article: CALLING SITES AND ACOUSTIC PARTITIONING IN SPECIES OF THE HYLA NANA AND RUBICUNDULA GROUPS (ANURA, HYLIDAE)
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ABSTRACT: We analysed spatial and acoustic partitioning among four species of Hyla belonging to two species-groups: nana (H. nana and H. sanborni) and rubicundula (H. elianeae and H. jimi). Field activities were conducted at three permanent ponds, from 1998 through 2001. Four attributes of the calling sites were analysed: perch height, distance of the perch from the edge of the pond, type of perch (vegetation) and the individual's position on the perch. There was extensive overlap in the four calling-site variables analysed. However, we found spatial segregation did occur in calling site height and the distance of perches from pond edges. Bioacoustic analyses revealed behavioural differences among species in calling activity, both time of onset and peak calling in chorus. There was acoustic partitioning among species the fundamental frequency of the advertisement calls, principally as a function of the temporal structure (e.g. note duration, rate of note repetition, duration and rate of repetition of the calling pulses). We propose that differences in physical attributes of calling site and in characteristics of calls allow these species to exist in sympatry.Herpetological Journal 01/2006; 16(3):239-247. · 0.81 Impact Factor
