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
doaj +3 more sources
First report of Davaneidae and Strongylida parasitizing Ramphocelus carbo (Aves: Passeriformes: Thraupidae) in the southwest of the Brazilian Amazon region [PDF]
Brazilian Journal of Veterinary Parasitology, 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.
Edson Guilherme +2 more
exaly +8 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
Breeding biology and biometrics of Silver-beaked Tanager Ramphocelus carbo connectens in south-west Brazilian Amazonia [PDF]
Bulletin of the British Ornithologists' Club, 2020 We present new data on the breeding biology and biometrics of Silver-beaked Tanager Ramphocelus carbo in south-west Brazilian Amazonia. R. carbo is widely distributed in South America, but its reproductive ecology is little studied. We made observations on the species in a terra firme forest fragment in the capital city of the state of Acre, between ...
Edson Guilherme, Jonatas Lima
exaly +2 more sources
Description of a New Species of Ramphocelus from Costa Rica
Auk, 1891 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
George K Cherrie
exaly +3 more sources
Revista de biologia tropical, 2012 Habitat modifications such as deforestation and the increase of agricultural activities, have led to uncommon faunal interactions. In Colombia, this condition have caused the secondary contact of subspecies of Ramphocelus flammigerus populations from Cauca valley and the Pacific coast; and some specimens with rumps of intermediate colors of the ...
M Juliana, Bedoya, Oscar E, Murillo
openaire +8 more sources