| an atypical enteropathogenic escherichia coli isolate with possible human and domestic animal origin from a free-living lear's macaw (anodorhynchus leari). | an atypical enteropathogenic escherichia coli was isolated from an asymptomatic nestling of the endangered lear's macaw (anodorhynchus leari). phylogenetically, it was identical to bovine and human strains and highly similar to other human and domestic animal isolates. we discuss potential routes of transmission and risks to conservation of this species. | 2017 | 28151077 |
| a survey for escherichia coli virulence factors in asymptomatic free-ranging parrots. | parrots in captivity are frequently affected by escherichia coli (e. coli) infections. the objective of this study was to collect information on the carrier state for e. coli pathotypes in asymptomatic free-ranging parrots. cloacal swabs were collected from nestlings of hyacinth, lear's macaws and blue-fronted amazon parrots and tested by polymerase chain reaction (pcr) for virulence factors commonly found in enteropathogenic, avian pathogenic, and uropathogenic e. coli strains. in total, 44 sam ... | 2012 | 23738135 |
| polymorphic dna microsatellite markers for forensic individual identification and parentage analyses of seven threatened species of parrots (family psittacidae). | the parrot family represents one of the bird group with the largest number of endangered species, as a result of habitat destruction and illegal trade. this illicit traffic involves the smuggling of eggs and animals, and the laundering through captive breeding facilities of wild-caught animals. despite the huge potential of wildlife dna forensics to determine with conclusive evidence illegal trade, current usage of dna profiling approaches in parrots has been limited by the lack of suitable mole ... | 2016 | 27688959 |
| comparative analysis of microsatellite variability in five macaw species (psittaciformes, psittacidae): application for conservation. | cross-amplification was tested and variability in microsatellite primers (designed for neotropical parrots) compared, in five macaw species, viz., three endangered blue macaws (cyanopsitta spixii [extinct in the wild], anodorhynchus leari [endangered] and anodorhynchus hyacinthinus [vulnerable]), and two unthreatened red macaws (ara chloropterus and ara macao). among the primers tested, 84.6% successfully amplified products in c. spixii, 83.3% in a. leari, 76.4% in a. hyacinthinus, 78.6% in a. c ... | 2011 | 21734841 |
| internal seed dispersal by parrots: an overview of a neglected mutualism. | despite the fact that parrots (psitacifformes) are generalist apex frugivores, they have largely been considered plant antagonists and thus neglected as seed dispersers of their food plants. internal dispersal was investigated by searching for seeds in faeces opportunistically collected at communal roosts, foraging sites and nests of eleven parrot species in different habitats and biomes in the neotropics. multiple intact seeds of seven plant species of five families were found in a variable pro ... | 2016 | 26925322 |
| isolation and characterization of 15 new microsatellite markers for the globally endangered lear's macaw anodorhynchus leari. | a set of 16 microsatellite markers was characterized for lear's macaw (anodorhynchus leari) using dna samples from captive individuals. extending this molecular toolkit, including the use of samples from wild individuals, is expected to provide the required power of resolution for pedigree inference of both wild and captive individuals, and could support research on the genetic structure of wild populations. we characterize a set of 15 microsatellite markers optimized for the lear's macaw, devel ... | 2020 | 32960414 |
| experimental removal of invasive africanized honey bees increased breeding population size of the endangered lear's macaw. | invasive africanized honey bees potentially compete with cavity-nesting birds in south america. however, the impacts of this competition and its conservation consequences to threatened species are poorly known. we quantified the presence of these bees and assessed their competition for cliff cavities used by nesting lear's macaws anodorhynchus leari, a globally endangered parrot endemic to the caatinga biome of brazil. we treated beehives with permethrin by shooting them with a crossbow bolt tha ... | 2020 | 32569399 |
| how much does it cost to save a species from extinction? costs and rewards of conserving the lear's macaw. | although the limited resources available to save species from extinction necessitate the optimization of conservation actions, little is known about their costs and effectiveness. we developed a costs-rewards framework that integrates information on which sectors of society contribute to funding conservation, how much is contributed, how funds are distributed among conservation targets and how these investments drive not only conservation rewards but also the economic and ecosystem services that ... | 2019 | 31417724 |