Results 11 to 20 of about 308 (155)
Ramphocelus passerinii Bonaparte
, 2007 Published as part of Č, Ř Á, 2007, Chewing lice (Phthiraptera) from buntings, cardinals and tanagers (Passeriformes: Emberizidae, Cardinalidae, Thraupidae) from Costa Rica, with descriptions of two new species of the genus Myrsidea (Phthiraptera: Menoponidae), pp.
Č, Ř Á
core +4 more sources
RECORD OF CHROMATIC MUTATION IN Rhea americana (Linnaeus, 1758) AND Ramphocelus bresilius (Linnaeus, 1766) IN BRAZIL [PDF]
Revista de Ciências Ambientais, 2018 Casos de plumagens anormais são descritos na literatura como plumagens aberrantes ou mutações cromáticas, não sendo incomum sua ocorrência entre as aves. Apresentamos aqui dois novos casos de mutações para aves neotropicais no território brasileiro. Um indivíduo de ema (Rhea americana) com mutação tipo leucismo, registrado numa área rural no Estado do ...
Luiz Liberato Costa Corrêa +3 more
openaire +2 more sources
Origin and dynamics of a hybrid zone between Ramphocelus tanagers (Thraupidae) in Colombia
, 2010 Characterizations of hybrid zones are of importance in evolutionary biology because they can give insights about the characters and processes implied in population divergence. Here, we characterize a hybrid zone between tanagers in the genus Ramphocelus (
Morales Rozo, Andrea
core +3 more sources
Zootaxa, 2010 In the current study, a new coccidian species (Protozoa: Apicomplexa: Eimeriidae) collected from the Brazilian tanager Ramphocelus bresilius dorsalis Sclater, 1855 is reported from Brazil. Isospora ramphoceli n. sp. has oocysts which are spherical to sub-spherical, 23.7 × 22.8 μ m, with smooth, bilayered wall, ~1.2 μ m thick. Micropyle, oocyst residuum
Berto, Bruno Pereira +4 more
openaire +2 more sources
Revista de Biología Tropical, 2012 Las modificaciones de los hábitats naturales, tales como la deforestación y el incremento de las actividades agrícolas, han conducido a interacciones faunísticas inusuales.
M. Juliana Bedoya, Oscar E. Murillo G
doaj +1 more source
Non-Native Plants Alter Bird-Plant Frugivory Network Structure in a Human-Modified Tropical Landscape. [PDF]
Ecol EvolDNA metabarcoding of faecal samples from 21 frugivorous bird species in Gamboa, Panama, was used to assess how non‐native plants influence frugivory network structure. Non‐native species, though comprising only 28% of plants, reduced nestedness, increased connectance and modularity, and caused disproportionately high secondary bird extinctions while ...
Fell A +6 more
europepmc +2 more sources
Trophic position determines the persistence of neotropical understory birds after forest disturbance. [PDF]
Ecol EvolWe studied whether an understory bird species' trophic position or niche width determines its persistence after forest disturbance in the Pacific lowlands of Costa Rica. Using stable isotope methodology, we found a significant effect of trophic position: Species feeding at low trophic levels in old‐growth forests were less likely to persist in ...
Paces B +5 more
europepmc +2 more sources
Multiple Pathways to Red Carotenoid Coloration: House Finches (Haemorhous mexicanus) Do Not Use CYP2J19 to Produce Red Plumage. [PDF]
Mol EcolABSTRACT The carotenoid‐based colours of birds are a celebrated example of biological diversity and an important system for the study of evolution. Recently, a two‐step mechanism, with the enzymes cytochrome P450 2J19 (CYP2J19) and 3‐hydroxybutyrate dehydrogenase 1‐like (BDH1L), was described for the biosynthesis of red ketocarotenoids from yellow ...
Koch RE +6 more
europepmc +2 more sources
Scarlet-rumped Tanager (Ramphocelus passerinii)
, 2020 Pascal O. Title, Kevin J. Burns
openaire +2 more sources