| a collection of ticks (ixodidae) from wild birds in uruguay. | thirty nine wild birds from seven families (alcedinidae, emberizidae, furnariidae, parulidae, trochilidae, turdidae and tyrannidae) were caught from 4 to 7 of february, 2004 at rincón da vassoura (31 degrees 15' s 56 degrees 03' w) department of tacuarembó, uruguay. ninety one nymphs and forty one larvae of ixodidae were recovered from them. the majority of ticks were conventionally identified but 16s mitochondrial rdna sequences were obtained for larvae and nymphs of amblyomma with uncertain sp ... | 2005 | 16132744 |
| efficiency of playback for assessing the occurrence of five bird species in brazilian atlantic forest fragments. | playback of bird songs is a useful technique for species detection; however, this method is usually not standardized. we tested playback efficiency for five atlantic forest birds (white-browed warbler basileuterus leucoblepharus, giant antshrike batara cinerea, swallow-tailed manakin chiroxiphia caudata, whiteshouldered fire-eye pyriglena leucoptera and surucua trogon trogon surrucura) for different time of the day, season of the year and species abundance at the morro grande forest reserve (sou ... | 2006 | 17143403 |
| variations in the abundance of three parulidae species in the southern portion of the brazilian atlantic forest, state of paraná. | we evaluated the distribution of abundance of three species of warblers in the southern portion of the brazilian atlantic forest (baf): tropical parula (parula pitiayumi), the golden-crowned warbler (basileuterus culicivorus) and the white-rimmed warbler (basileuterus leucoblepharus). three types of forests comprise this region of the atlantic forest: seasonal semi-deciduous forest (sf), mixed rain forest (mf) and dense rain forest (df). these forest types occur at different elevations: sf rangi ... | 2012 | 22782537 |
| phylogeography of an atlantic forest passerine reveals demographic stability through the last glacial maximum. | in this study we analyzed the phylogeographic pattern and historical demography of an endemic atlantic forest (af) bird, basileuterus leucoblepharus, and test the influence of the last glacial maximum (lgm) on its population effective size using coalescent simulations. we address two main questions: (i) does b. leucoblepharus present population genetic structure congruent with the patterns observed for other af organisms? (ii) how did the lgm affect the effective population size of b. leucobleph ... | 2012 | 22940152 |
| singing in the rain forest: how a tropical bird song transfers information. | how information transmission processes between individuals are shaped by natural selection is a key question for the understanding of the evolution of acoustic communication systems. environmental acoustics predict that signal structure will differ depending on general features of the habitat. social features, like individual spacing and mating behavior, may also be important for the design of communication. here we present the first experimental study investigating how a tropical rainforest bir ... | 2008 | 18270571 |
| how a simple and stereotyped acoustic signal transmits individual information: the song of the white-browed warbler basileuterus leucoblepharus. | the white-browed warbler basileuterus leucoblepharus, a common bird of the brazilianatlantic forest, emits only one distinct song type in the context of territorial defense. individual or neighbor-stranger recognition may be more difficult when birds share similar songs. in fact, the analysis of songs of different individuals reveals slight differences in the temporal and the frequency domains. effectively, a careful examination of the signals of different individuals (21) by 5 complementary met ... | 2004 | 15258647 |