| surveys for ectoparasites on wildlife associated with amblyomma variegatum (acari: ixodidae)-infested livestock in st. croix, u.s. virgin islands. | surveys in 2001, 2005, and 2006 attempted to determine the role of wildlife in maintenance and dissemination of the tropical bont tick, amblyomma variegatum (f.) (acari: ixodidae), in st. croix, u.s. virgin islands. small mammals; birds; white-tailed deer, odocoileus virginianus (zimmermann); and feral cattle, bos taurus l., were examined at nine premises, in mountainous rain forest, and in surrounding areas in western st. croix, an area including and central to all known bont tick-infested prem ... | 2009 | 19960701 |
| host phylogeography and beta diversity in avian haemosporidian (plasmodiidae) assemblages of the lesser antilles. | 1. we estimated the correlation between host phylogeographical structure and beta diversity of avian haemosporidian assemblages of passerine birds to determine the degree to which parasite communities change with host evolution, expressed as genetic divergence between island populations, and we investigated whether differences among islands in the haemosporidia of a particular host species reflect beta diversity in the entire parasite assemblage, beta diversity in vectors, turnover of bird speci ... | 2011 | 21426344 |
| feeding innovations in a nested phylogeny of neotropical passerines. | several studies on cognition, molecular phylogenetics and taxonomic diversity independently suggest that darwin's finches are part of a larger clade of speciose, flexible birds, the family thraupidae, a member of the new world nine-primaried oscine superfamily emberizoidea. here, we first present a new, previously unpublished, dataset of feeding innovations covering the neotropical region and compare the stem clades of darwin's finches to other neotropical clades at the levels of the subfamily, ... | 2016 | 26926278 |
| description of <i>brachymeria philornisae</i> sp. n. (hymenoptera: chalcididae), a parasitoid of the bird parasite <i>philornis</i> <i>trinitensis</i> (diptera: muscidae) in tobago, with a review of the sibling species. | in this paper, we describe and illustrate a new species of parasitoid wasp as brachymeria philornisae delvare, sp. nov. the new species was reared from philornis trinitensis dodge & aitken (diptera: muscidae) puparia that were found in the nests of the bird species mimus gilvus (vieillot) (mimidae) and tiaris bicolor (l.) (thraupidae) in tobago. the new species is of particular interest as it may be considered a potential biological control agent in locations where philornis species are invasive ... | 2017 | 28610193 |
| divergence in problem-solving skills is associated with differential expression of glutamate receptors in wild finches. | problem solving and innovation are key components of intelligence. we compare wild-caught individuals from two species that are close relatives of darwin's finches, the innovative loxigilla barbadensis, and its most closely related species in barbados, the conservative tiaris bicolor. we found an all-or-none difference in the problem-solving capacity of the two species. brain rna sequencing analyses revealed interspecific differences in genes related to neuronal and synaptic plasticity in the in ... | 2018 | 29546239 |