| new data on the taxonomy and distribution of ten neotropical chewing lice of the genus myrsidea (phthiraptera: menoponidae), including the description of a new species. | the new species myrsidea alexanderi is described and illustrated ex pheugopedius maculipectus (troglodytidae) from honduras. redescriptions and illustrations are given for both sexes of myrsidea chiapensis ex calocitta formosa from costa rica, and the male of m. dissimilis ex progne chalybea from brazil. also, seven other previously known species or subspecies of the louse genus myrsidea are recorded and discussed from passerine birds of the neotropical region, as follows: myrsidea antiqua, myrs ... | 2016 | 27394300 |
| five new species of the feather mite genus trouessartia canestrini from south america (acari: trouessartiidae). | five new feather mite species of the genus trouessartia canestrini are described from south american birds: trouessartia latiducta sp. nov. from phylloscartes kronei (tyrannidae), t. basileuteri sp. nov. from basileuterus culicivorus (parulidae), t. sicaliae sp. nov. from sicalis flaveola (emberizidae), t. savanae sp. nov. from tyrannus savana (tyrannidae), and t. picumni from picumnus fulvescens (picidae). the latter species is the first representative of the genus described from a bird of the ... | 2014 | 25284645 |
| 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 |
| spatial dynamics of understorey insectivorous birds and arthropods in a southeastern brazilian atlantic woodlot. | spatial distribution and spatial relationships in capture rates of understorey insectivorous birds and density of arthropods were investigated in a patch of upper montane rain forest in minas gerais state, southeastern brazil, from january to december 2004. the composition of the arthropod fauna collected was similar to that reported for other tropical forests, with predominance of araneae, coleoptera, hymenoptera and hemiptera non-heteroptera. a total of 26 bird species were captured, among whi ... | 2011 | 21437393 |
| biogeographic history of the species complex basileuterus culicivorus (aves, parulidae) in the neotropics. | the taxonomic status of basileuterus culicivorus complex has been under debate for a long time. there are uncertainties about the relationships among recognized species (b. culicivorus and b. hypoleucus), and whether b. culicivorus can be considered as a single species. in order to elucidate the phylogenetic relationships among these species and their biogeographic history we used a broad geographic sampling from mexico to argentina of b. culicivorus and b. hypoleucus. using a mitochondrial gene ... | 2010 | 20659571 |
| an experimental study of habitat selection by birds in a coffee plantation. | unique components of tropical habitats, such as abundant vascular epiphytes, influence the distribution of species and can contribute to the high diversity of many animal groups in the tropics. however, the role of such features in habitat selection and demography of individual species has not been established. understanding the mechanisms of habitat selection requires both experimental manipulation of habitat structure and detailed estimation of the behavioral and demographic response of animal ... | 2008 | 18481516 |
| modeling the flocking propensity of passerine birds in two neotropical habitats. | we examined the importance of mixed-species flock abundance, individual bird home range size, foraging height, and foraging patch characteristics in predicting the propensity for five neotropical passerine bird species (slaty antwren, myrmotherula schisticolor; golden-crowned warbler, basileuterus culicivorus; slate-throated redstart, myioborus miniatus; wilson's warbler, wilsonia pusilla; and black-and-white warbler, mniotilta varia) to forage within flocks, rather than solitarily. we used stud ... | 2007 | 17375332 |
| atlantic birds: a data set of bird species from the brazilian atlantic forest. | south america holds 30% of the world's avifauna, with the atlantic forest representing one of the richest regions of the neotropics. here we have compiled a data set on brazilian atlantic forest bird occurrence (150,423) and abundance samples (n = 832 bird species; 33,119 bird individuals) using multiple methods, including qualitative surveys, mist nets, point counts, and line transects). we used four main sources of data: museum collections, on-line databases, literature sources, and unpublishe ... | 2017 | 29266462 |
| borrelia genospecies in ixodes sp. cf. ixodes affinis (acari: ixodidae) from argentina. | the aim of this work was to evaluate the presence of borrelia infection in ixodes sp. cf. ixodes affinis ticks from argentina. specimens of ixodes sp. cf. i. affinis were collected on vegetation and birds in five locations belonging the most humid part of the chaco biogeographic province. specimens were tested for borrelia infection by nested-pcr targeting the flab gene and the rrfa-rrlb intergenic spacer region (igs), sequenced and phylogenetically analyzed. a total of 48 ixodes sp. cf. i. affi ... | 2020 | 32993952 |
| effect of urbanization on the micronucleus frequency in birds from forest fragments. | the urbanization contributes to environment contamination, mainly by the increased vehicle traffic. this intense traffic releases in the air chemical compounds with mutagenic properties that can affect the entire ecosystem. the birds for the flight accumulate air, absorbing gases or particles. the absorption of this polluted air may be causative agent responsible for micronucleus (mn) induction in bird erythrocytes. the quantitative analysis of mn in birds can assists in the monitoring environme ... | 2019 | 30658298 |
| 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 |