| comparative cytogenetic analysis of some species of the dendropsophus microcephalus group (anura, hylidae) in the light of phylogenetic inferences. | dendropsophus is a monophyletic anuran genus with a diploid number of 30 chromosomes as an important synapomorphy. however, the internal phylogenetic relationships of this genus are poorly understood. interestingly, an intriguing interspecific variation in the telocentric chromosome number has been useful in species identification. to address certain uncertainties related to one of the species groups of dendropsophus, the d. microcephalus group, we carried out a cytogenetic analysis combined wit ... | 2013 | 23822759 |
| bioacoustic analysis of advertisement call in hyla nana and hyla sanborni (anura, hylidae) in botucatu, são paulo, brazil. | vocal communication traits of hyla nana and hyla sanborni, of the nana species group, were studied from august 1997 until june 1999 in two large permanent ponds located in an open field in botucatu, são paulo state. one hundred thirty-one individuals, 71 of h. nana and 58 of h. sanborni, were recorded in the beginning of their vocalization activity and during chorus vocalization. the rhythms of sound emission on the two occasions were different. an advertisement call consists in a consecutive se ... | 2003 | 14758710 |
| chromosomal differentiation of hyla nana and hyla sanborni (anura, hylidae) with a description of nor polymorphism in h. nana. | specimens of hyla nana and hyla sanborni from a syntopic population were studied cytogenetically. these species are morphologically very similar and are frequently misidentified, confused with each other. both species had a diploid chromosome number, 2n = 30. however, the karyotypes of h. nana and h. sanborni differed considerably from each other in the number of submetacentric and telocentric chromosomes. the two species also differed in their primary nor-bearing chromosomes (metacentric pair 1 ... | 2006 | 12721226 |