Results: 25

Precipitation explains Wood Thrush (Hylocichla mustelina) occupancy patterns in Northern Costa Rica

Rev. biol. trop; 72 (1), 2024
Abstract Introduction: The Wood Thrush is a migratory bird that has experienced dramatic declines in its populations in recent decades. This species overwinters in forest fragments with intermediate levels of habitat modification in Central America. However, more studies detailing the use of remnant fo...

Infrações ambientais relacionadas à criação amadora de passeriformes no Distrito Federal

J. Health Sci. Inst; 41 (2), 2023
A criação amadora de aves passeriformes nativas é regulamentada pela Instrução Normativa nº 10/2011, sendo proibida a captura destes animais diretamente da natureza. Além disso, aquele que deseja praticar essa atividade deve atentar-se a Lei de Crimes Ambientais, que dispõe sobre as sanções pen...

Comparative study of the histomorphological structure of the small intestine of Lonchura striata and Copsychus saularis

Int. j. morphol; 40 (4), 2022
SUMMARY: Six Lonchura striata and six Copsychus saularis birds were selected in this study, morphological index of the small intestine was measured by quantitative biology and image analysis. The changes of goblet cells and Na+/K+ATPase were detected by AB-PAS staining and ELISA to inform the different m...

Histomorphological structure of the Bursa cloacalis (Bursa of Fabricius) in young Leiothrix lutea: a comparative study using light microscopy and transmission electron microscopy

Int. j. morphol; 39 (6), 2021
SUMMARY: This study aimed to investigate the microstructure and ultrastructure of the Bursa cloacalis (Bursa of Fabricius) (BC) in young Leiothrix lutea at various days of age (a few days after hatching) using light microscopy and transmission electron microscopy. The bird BC was sampled at 1, 5, 7, and ...

Brasilia tapaculo (Scytalopus novacapitalis) seasonality and site occupancy in altitudinal riparian environments after non-natural burnings and feral pig invasion in Serra da Canastra National Park, Brazil

Braz. j. biol; 81 (2), 2021
The Brasilia Tapaculo, Scytalopus novacapitalis Sick, 1958, is a rare, geographically restricted, and endangered bird species that inhabits riparian vegetation of Cerrado, mainly Gallery Forests. In Serra da Canastra National Park, southeastern Brazil, wetlands are under threat due to frequent non-natura...

Molecular diagnosis of avian viruses in grassland passerines and captive yellow cardinals Gubernatrix cristata in Brazil

Pesqui. vet. bras; 41 (), 2021
Avian influenza viruses (AIVs), Newcastle disease virus (NDV), West Nile virus (WNV), adenovirus (AV) and herpesvirus (HV) play an important role in the health of human and animal populations. However, knowledge of the prevalence of these viruses in wild birds is restricted to some groups (e.g. shorebird...

Comportamiento reproductivo, forrajeo y uso de hábitat de Coccyzus ferrugineus (Cuculiformes: Cuculidae) en la Isla del Coco, Costa Rica

Rev. biol. trop; 68 (supl 2), 2020
Introducción: Coccyzus ferrugineus es el ave endémica menos estudiada de la Isla del Coco se desconocen muchos aspectos sobre su historia natural y comportamiento, siendo de las especies menos conocidas en Costa Rica. Objetivo: Describir el comportamiento reproductivo, de forrajeo, y el uso de hábitat...

Serum anti-Toxoplasma gondii antibodies in Passer domesticus (Linnaeus, 1758) (Passeriformes: Passeridae), in the municipality of Pelotas, RS, Brazil

The objective of this study was to detect the presence of anti-Toxoplasma gondii antibodies in serum samples from 100 house sparrows (Passer domesticus Linnaeus, 1758) that were caught in the municipality of Pelotas, Rio Grande do Sul, Brazil. The modified agglutination test (MAT) was u...

Ciclos anuales de colibríes (Aves: Trochilidae) en un bosque nublado, Parque Nacional Henri Pittier, Venezuela

Rev. biol. trop; 68 (1), 2020
El Paso de Portachuelo es un abra utilizado por una gran diversidad de especies de aves, bien sea como residentes o para movimientos estacionales o migratorios, en el cual se han reportado 32 especies de colibríes en la familia Trochilidae. Debido a esto nos planteamos como objetivo evaluar la dinámica...

Morphological and molecular characterization of Haemoproteus coatneyi and Haemoproteus erythrogravidus (Haemosporida: Haemoproteidae) in Passeriformes in Brazils Atlantic Forest

Abstract Haemoproteus spp. are protozoan parasites found in birds around the world. These parasites are identified through the morphology of gametocytes, phylogenetic analysis based on the mitochondrial cytb gene, and the parasite's geographic distribution. The absence of erythrocytic merogony, high intr...