| phylogeography of four frog species in forest fragments of northeastern brazil--a preliminary study. | i contrast mitochondrial dna genealogies based on 612 bp of the cytochrome b gene across four co-distributed species of frogs in northeastern brazil. they are hyla albomarginata, hyla branneri, proceratophrys boiei, and scinax nebulosus. samples were collected from the core or edge of six rainforest remnants in the states of pernambuco and alagoas. three fragments are located within the humid atlantic forest morphoclimatic domain (municipalities of cabo de santo agostinho, ibateguara, and jaquei ... | 2002 | 21680371 |
| the occurrence of amphibians in bromeliads from a southeastern brazilian restinga habitat, with special reference to aparasphenodon brunoi (anura, hylidae). | five species of anuran amphibians, all belonging to the family hylidae, were collected at praia das neves, municipality of president kennedy, southeastern brazil. the species were represented by four genera: scinax, hyla, aparasphenodon, and trachycephalus. four species (a. brunoi, hyla albomarginata, scinax altera, and s. cuspidatus) were found during the dry season (august 1999), and two (a. brunoi and trachycephalus nigromaculatus) in the rainy season (february 2000). aparasphenodon brunoi wa ... | 2002 | 12489399 |
| biological invasions and the acoustic niche: the effect of bullfrog calls on the acoustic signals of white-banded tree frogs. | invasive species are known to affect native species in a variety of ways, but the effect of acoustic invaders has not been examined previously. we simulated an invasion of the acoustic niche by exposing calling native male white-banded tree frogs (hypsiboas albomarginatus) to recorded invasive american bullfrog (lithobates catesbeianus) calls. in response, tree frogs immediately shifted calls to significantly higher frequencies. in the post-stimulus period, they continued to use higher frequenci ... | 2012 | 22675139 |
| muscles of the pes of hylid frogs. | complete or partial dissection of the foot musculature of 404 hylid frogs representing 247 species and 33 genera, along with representatives of eight other families, revealed a number of apomorphic characters that distinguish the hyloid frogs (hylidae plus allophryne and centrolenidae) from other bufonoid frogs. additional characters were found to define some of the hylid subfamilies. addition of characters from the foot musculature to duellman's phylogenetic tree of the hyloids produced a tree ... | 2004 | 15108161 |