| a rickettsia parkeri-like agent infecting amblyomma calcaratum nymphs from wild birds in mato grosso do sul, brazil. | in total, 142 birds, mostly passerines, belonging to 42 species were examined for the presence of ticks in 3 locations in mato grosso do sul brazil during 2006. seven birds (5%) were infested with 4 nymphs of amblyomma calcaratum (ramphocelus carbo, 3 infested/12 examined) and 5 larvae of amblyomma sp. (furnarius rufus, 2/5; turdus leucomelas, 1/6; and paroaria capitata, 1/8). all 4 nymphs of a. calcaratum tested by polymerase chain reaction targeting rickettsial genes glta and ompa and by ampli ... | 2013 | 23238243 |
| bird attributes, plant characteristics, and seed dispersal of pera glabrata (schott, 1858), (euphorbiaceae) in a disturbed cerrado area. | several plant characteristics, such as fruit production, nutrient reward, secondary compounds, and fruit color display, affect fruit choice by birds. on the other hand, several bird attributes affect their efficiency as dispersers. here we investigate the ornithochoric seed dispersal of pera glabrata schott (euphorbiaceae) in a cerrado fragment in southeastern brazil. a set of bird attributes, such as frequency of visits, number of diaspores eaten, time spent foraging, methods of taking and hand ... | 2007 | 18278313 |
| characterization and distribution of isospora sabiai n. sp. (apicomplexa: eimeriidae) from thrushes turdus spp. (passeriformes: turdidae) from brazil. | a new coccidian species (protozoa: apicomplexa: isospora) is described parasitizing white-necked thrushes turdus albicollis vieillot, 1818, rufous-bellied thrushes turdus rufiventris vieillot, 1818, pale-breasted thrushes turdus leucomelas vieillot, 1818 and yellow-legged thrushes turdus flavipes vieillot, 1818 from 3 different localities in brazil. isospora sabiai n. sp. has oocysts that are sub-spherical to ellipsoidal, 20.9 × 18.6 µm, with smooth, delicate, bilayered wall, ~1.1 μm thick. micr ... | 2017 | 28319677 |
| isospora albicollis (apicomplexa: eimeriidae) in thrushes turdus spp. (passeriformes: turdidae), in southeastern brazil. | the aim of the present study was to report and describe isospora albicollis lainson and shaw, 1989 parasitizing a white-necked thrush turdus albicollis vieillot, 1818 and a pale-breasted thrush turdus leucomelas vieillot, 1818 in two different localities: the itatiaia national park and cacaria, in southeastern brazil. the oocysts identified were ovoidal, 24.4 × 19.7 μm, with a smooth, bilayered wall, around 1.4 μm thick. oocyst residuum was absent, but a micropyle and a polar granule were presen ... | 2017 | 28423067 |
| effects of land cover on the movement of frugivorous birds in a heterogeneous landscape. | movement is a key spatiotemporal process that enables interactions between animals and other elements of nature. the understanding of animal trajectories and the mechanisms that influence them at the landscape level can yield insight into ecological processes and potential solutions to specific ecological problems. based upon optimal foraging models and empirical evidence, we hypothesized that movement by thrushes is highly tortuous (low average movement speeds and homogeneous distribution of tu ... | 2016 | 27257810 |
| molecular and morphological characterization of a brazilian lineage of plasmodium (novyella) unalis in turdus spp. (passeriformes) of the atlantic forest, with remarks on new hosts and high genetic variation. | plasmodium spp. are haemosporidian protozoans that alternate their live cycles between bloodsucking culicidae dipterans and vertebrate hosts (mammals, reptiles and birds). in birds, these parasites are the causative agents of the so called avian malaria, a disease associated with considerable declines and extinctions in the avifauna in different geographical regions. in this work, we applied a multidisciplinary approach, light microscopy and cytochrome oxidase b (cyt b) gene sequence analysis fo ... | 2017 | 28930498 |
| isospora brasilsatoae n. sp. (apicomplexa: eimeriidae) from thrushes turdus spp. (passeriformes: turdidae) from brazil. | a new species of coccidia (protozoa: apicomplexa: eimeriidae) found parasitizing the yellow-legged thrush turdus flavipes (vieillot, 1818), the pale-breasted thrush turdus leucomelas vieillot, 1818 and the creamy-bellied thrush turdus amaurochalinus cabanis, 1850 in southeastern brazil is described. isospora brasilsatoae n. sp. has oocysts that are ovoidal to pyriform, 26.8 × 21.1 μm, with smooth, bilayered wall, ~1.6 μm thick. micropyle present. oocyst residuum absent, but one to three polar gr ... | 2019 | 30790929 |
| atlantic bird traits: a data set of bird morphological traits from the atlantic forests of south america. | scientists have long been trying to understand why the neotropical region holds the highest diversity of birds on earth. recently, there has been increased interest in morphological variation between and within species, and in how climate, topography, and anthropogenic pressures may explain and affect phenotypic variation. because morphological data are not always available for many species at the local or regional scale, we are limited in our understanding of intra- and interspecies spatial mor ... | 2019 | 30845354 |