Abstract Chemical defense is a widespread mechanism on many animals and plants. However, just a few cases are known for avian species. In this study we evaluate the toxicity of Pheucticus chrysopeplus feather extract via lethality test with brine shrimp (Artemia salina) as an in vivo model. Mortality of ...
Abstract We used miniaturized GPS loggers and site observations to access foraging patterns and nest behaviour of the White-tailed Tropicbird Phaethon lepturus (WTTB), an endangered species at its South Atlantic breeding colony. Dual foraging pattern was observed with alternation between long and short f...
Silva, Marcio André;
Pena, Hilda Fátima Jesus;
Soares, Herbert Sousa;
Aizawa, Juliana;
Oliveira, Solange;
Alves, Bruna Farias;
Souza, Dênisson Silva;
Melo, Renata Pimentel Bandeira;
Gennari, Solange Maria;
Mota, Rinaldo Aparecido;
Silva, Jean Carlos Ramos.
Abstract Recent genetic population studies on Toxoplasma gondii in Brazil have shown large genetic variability. The objective of the present study was to isolate and genotypically characterize T. gondii from free-ranging and captive wild mammals and birds in Pernambuco state, Brazil. Fragments of heart,...
Anticuerpos Antiprotozoarios/sangre,
Aves/parasitología,
Brasil,
ADN Protozoario/análisis,
Variación Genética,
Genotipo,
Mamíferos/clasificación,
Mamíferos/parasitología,
Reacción en Cadena de la Polimerasa,
Polimorfismo de Longitud del Fragmento de Restricción,
Toxoplasma/genética,
Toxoplasma/inmunología,
Toxoplasma/aislamiento & purificación
Migration is an event observed in several animals, such as shorebirds moving between the northern and southern hemispheres, during breeding and wintering intervals. Morphophysiological adaptations are necessary to allow the maintenance of migratory cycles and, therefore, studies with this focus can help ...
Abstract The growth of the population of cattle egrets (Bubulcus ibis) in the archipelago of Fernando de Noronha constitutes a threat to public health and biological diversity because of their competition with and predation on native species and the possibility of transmission of pathogens to human being...
Resumen En las zonas urbanas, los ríos brindan diversos servicios ecosistémicos, entre ellos, funcionan como corredores biológicos interurbanos, permitiendo a las aves trasladarse y refugiarse en medio de la ciudad. Sin embargo, los altos niveles de contaminación las exponen, e incluso al ser humano,...
Abstract Tropical forests have undergone extensive transformation because of increasing tourism development, in addition to historic clearing for agricultural and cattle grazing activities. Altogether, these activities have had an important effect on bird diversity, reducing the habitat available to many...
Abstract Six species of birds of the family Sternidae are often found on the southern coast of South America. Sterna trudeaui, S. hirundinacea, Thalasseus maximus, T. acuflavidus and Sternula superciliaris are South American residents and Sterna hirundo, a Nearctic migrant. At least 500 species of nasal ...
Abstract Acuariidae nematodes are normally found in the digestive tract of aquatic birds, including Procellariiformes. Were examined Calonectris borealis (n = 4), Diomedea exulans (n = 1), Macronectes giganteus (n = 8), Thalassarche chlororhynchos (n = 5), Thalassarche melanophrys (n = 15), Procellaria a...
ABSTRACT The objective of this study was to determine the prevalence and diversity of gastrointestinal parasites in fecal samples from wild birds and mammals from the State of Paraná. In total, 220 stool samples were sent to Parasitic Diseases Laboratory of the Federal University of Paraná during 13 mo...
Animales Salvajes/parasitología,
Aves/parasitología,
Brasil,
Eimeria/aislamiento & purificación,
Heces/parasitología,
Tracto Gastrointestinal/parasitología,
Parasitosis Intestinales/parasitología,
Parasitosis Intestinales/virología,
Mamíferos/parasitología,
Parásitos/aislamiento & purificación,
Valores de Referencia,
Strongyloidea/aislamiento & purificación,
Trichuris/aislamiento & purificación
