Results 41 to 50 of about 1,345 (168)

Birds from cerradão woodland, an overlooked forest of the Cerrado region, Brazil [PDF]

open access: yes, 2011
The Cerrado region still receives relatively little ornithological attention, although it is regarded as the only tropical savanna in the world considered to be a biodiversity hotspot.
CAVARZERE, Vagner   +4 more
core   +3 more sources

The role of alien plants in the composition of fruit-eating bird assemblages in Brazilian urban ecosystems [PDF]

open access: yes, 2007
Between 1985 and 2004, 91 wild fruit-eating bird species were studied in 11 urban areas of Brazil: 78 of these species were seed dispersers and 13 were seed predators. The most representative families of fruit-eating birds in these areas were: Thraupidae
Guix, Juan Carlos
core   +1 more source

Low Levels of Extra-Pair Paternity in a Neotropical Duetting Songbird, the Rufous-and-White Wren (Thryothorus rufalbus) [PDF]

open access: yes, 2012
Molecular analyses have confirmed that the majority of socially monogamous birds follow a genetically promiscuous reproductive strategy. Most such studies, however, have addressed species of the North Temperate Zone; tropical species are grossly ...
Douglas, Sarah B.   +2 more
core   +4 more sources

RECORD OF CHROMATIC MUTATION IN Rhea americana (Linnaeus, 1758) AND Ramphocelus bresilius (Linnaeus, 1766) IN BRAZIL [PDF]

open access: yesRevista 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   +1 more source

Recurrent gene flow events occurred during the diversification of clownfishes of the skunk complex

open access: yesMolecular Ecology, Volume 33, Issue 11, June 2024.
Abstract Clownfish (subfamily Amphiprioninae) are an iconic group of coral reef fish that evolved a mutualistic interaction with sea anemones, which triggered the adaptive radiation of the clade. Within clownfishes, the “skunk complex” is particularly interesting.
Anna Marcionetti   +8 more
wiley   +1 more source

DOIS NOVOS HOSPEDEIROS PARA Isospora tiesangui BERTO, FLAUSINO, LUZ, FERREIRA & LOPES, 2008 (APICOMPLEXA: EIMERIIDAE)

open access: yesBrazilian Journal of Veterinary Medicine, 2010
Este estudo relata sanhaços-do-coqueiro, Thraupis palmarum e saís-azuis, Dacnis cayana, parasitados por Isospora tiesangui. Este coccídio foi originalmente descrito parasitando o tiê-sangue Ramphocelus bresilius dorsalis e nunca foi descrito em outros ...
Bruno Pereira Berto   +4 more
doaj  

Selección de diferentes sistemas de producción de cacao (Theobroma cacao, Malvaceae) por aves en Alto Beni, Bolivia - una prueba de cafetería en el campo [PDF]

open access: yes, 2017
El cacao (Theobroma cacao, Malvaceae) es una especie nativa de Sudamérica, y se considera que su cultivo cumple un rol importante para la conservación de biodiversidad.
Gómez, M. Isabel   +2 more
core  

Historic genetic structuring and paraphyly within the Great-tailed Grackle

open access: yes, 2008
The Great-tailed Grackle (Quiscalus mexicanus) and Boat-tailed Grackle (Q. major) are sister species that have expanded their ranges during historical times. This expansion has created an area of sympatry between these species in Texas and Louisiana, and
American Ornithologists' Union   +31 more
core   +1 more source

Iris colour as an indicator of age feature in female Brazilian tanagers (Passeriformes: Emberizidae) confirmed by a molecular sexing technique

open access: yesRevista de Biología Tropical, 2008
The Brazilian tanager, Ramphocelus bresilius is an endemic species from Brazil that is sexually dimorphic in adult plumage. Young males are similar to adult and young females until their second year.
Denise Monnerat Nogueira   +1 more
doaj  

Germinação de sementes de Cecropia pachystachya Trécul (Cecropiaceae) em padrões anteriores e posteriores à passagem pelo trato digestório de aves dispersoras de sementes. [PDF]

open access: yes, 2011
O objetivo neste experimento foi avaliar a germinação natural de sementes de C. pachystachya e comparar à germinação de sementes que passaram pelo trato digestório de aves dispersoras de sementes.
BOCCHESE, R. A.   +2 more
core  

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