The carotenoid redshift: Physical basis and implications for visual signaling [PDF]
Ecology and Evolution, 2023 Carotenoid pigments are the basis for much red, orange, and yellow coloration in nature and central to visual signaling. However, as pigment concentration increases, carotenoid signals not only darken and become more saturated but they also redshift; for
Dakota E. McCoy +4 more
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Microstructures amplify carotenoid plumage signals in tanagers [PDF]
Scientific Reports, 2021 Brilliantly-colored birds are a model system for research into evolution and sexual selection. Red, orange, and yellow carotenoid-colored plumages have been considered honest signals of condition; however, sex differences in feather pigments and ...
Dakota E. McCoy +6 more
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Molecular survey of Hepatozoon spp., piroplasmids, and onchocercids in wild birds from the Brazilian Pantanal [PDF]
Revista Brasileira de Parasitologia VeterináriaThe diversity of Hepatozoon spp., piroplasmids, and onchocercids that parasitize birds worldwide has been underestimated, especially in Brazil. The present work aimed to investigate, using molecular assays, the occurrence of Hepatozoon spp., piroplasmids,
Amir Salvador Alabí Córdova +5 more
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Validation of a High-Throughput Microfluidic Real-Time PCR for the Detection of Vector-Borne Agents in Wild Birds from the Brazilian Pantanal [PDF]
PathogensDespite numerous studies on haemosporidians in wild birds from Brazil, the presence of other vector-borne agents (VBA) such as Anaplasma spp., Bartonella spp., and Onchocercidae filariids in avian hosts remains largely unknown.
Amir Salvador Alabí Córdova +9 more
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Origin and cross-century dynamics of an avian hybrid zone [PDF]
BMC Evolutionary Biology, 2017 Background Characterizations of the dynamics of hybrid zones in space and time can give insights about traits and processes important in population divergence and speciation. We characterized a hybrid zone between tanagers in the genus Ramphocelus (Aves,
Andrea Morales-Rozo +3 more
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Novel Tick-Borne Anaplasmataceae Genotypes in Tropical Birds from the Brazilian Pantanal Wetland [PDF]
MicroorganismsDespite numerous reports of Anaplasmataceae agents in mammals worldwide, few studies have investigated their occurrence in birds. The present study aimed to investigate the occurrence and molecular identity of Anaplasmataceae agents in birds from the ...
Amir Salvador Alabí Córdova +8 more
doaj +2 more sources
First report of Davaneidae and Strongylida parasitizing Ramphocelus carbo (Aves: Passeriformes: Thraupidae) in the southwest of the Brazilian Amazon region [PDF]
Revista Brasileira de Parasitologia Veterinária, 2020 In Brazil, species of the genus Ramphocelus with the presence of various endoparasites have already been reported. Coccidia have been the parasites most frequently found.
Leandro Siqueira de Souza +4 more
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Diversidad de aves en la zona costera de Bahía Ballena y Puerto Cortés, Costa Rica
Cuadernos de investigación UNED, 2019 Introducción: las aves son componentes importantes de la biodiversidad y desempeñan un papel ecológico fundamental en la dispersión y la polinización, además de caracterizar el estado de conservación de los ecosistemas. Objetivo: determinar la diversidad
Juan Carlos Villegas-Arguedas
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Bird-plant interactions on the edge of a forest fragment in southwestern Brazilian Amazonia
Acta Scientiarum: Biological Sciences, 2020 Seed dispersal is one of the principal ecological processes that determine the richness and distribution of plants in tropical forests. Birds play an important role in the zoochoric dispersal of seeds in these forests.
Luana Alencar, Edson Guilherme
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Avifauna del Caribe sur asociada a ecosistemas alterados en Limón, Costa Rica
Cuadernos de investigación UNED, 2014 Southern Caribbean avifauna associated with altered ecosystems in Limón, Costa Rica. The Caribbean coast of Costa Rica, one of the areas with higher bird species richness in the country, is the main migratory route in Central America.
Juan Carlos Villegas Arguedas +1 more
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