Results 51 to 60 of about 1,275 (185)

Sarcocystis falcatula infection in ringneck parakeets (Psittacula krameri) in Minas Gerais, Brazil

Brazilian Journal of Veterinary Pathology
Sarcocystis falcatula is an Apicomplexa protozoan parasite recognized for its pathogenicity in birds. This microorganism has a complex life cycle involving definitive hosts, such as marsupials from the Didelphidae family, and intermediate hosts, which ...
Acácia Eduarda de Jesus Nascimento, Nayara Toledo da Silva, Tatyana Salarolli de Carvalho, Gabriel Almeida de Oliveira Bezerra, Lucas dos Reis Souza, Ayisa Rodrigues de Oliveira, Renato Lima Santos   +6 more
doaj   +1 more source

Non‐native parrot species expand the trait space of avian communities by filling empty niches in urban areas

Ibis, Volume 168, Issue 3, Page 1055-1070, July 2026.
Non‐native species are one of the greatest threats to biodiversity worldwide due to their direct and indirect effects on native communities. There are two opposing hypotheses to explain how non‐native species successfully establish outside their native range.
Fabio Marcolin, Riccardo Alba, Stefano Mammola, Giacomo Assandri, Luca Ilahiane, Diego Rubolini, Luís Reino, Dan Chamberlain   +7 more
wiley   +1 more source

Balancing conflict and coexistence: Interactions between invasive monk parakeets and native urban birds

Ecological Applications, Volume 36, Issue 4, June 2026.
Abstract Biological invasions often generate complex ecological paradoxes, particularly when invasive species act as ecosystem engineers that simultaneously compete with and benefit native communities. Understanding these dual dynamics is critical for managing urban biodiversity.
Jon Blanco‐González, Isabel López‐Rull, Fernando Enríquez, Luis Cayuela   +3 more
wiley   +1 more source

“Kill Two Birds with One Stone”: Urban Tree Species Classification Using Bi-Temporal Pléiades Images to Study Nesting Preferences of an Invasive Bird

Remote Sensing, 2017
This study presents the results of object-based classifications assessing the potential of bi-temporal Pléiades images for mapping broadleaf and coniferous tree species potentially used by the ring-necked parakeet Psittacula krameri for nesting in the ...
Marine Le Louarn, Philippe Clergeau, Elodie Briche, Magali Deschamps-Cottin   +3 more
doaj   +1 more source

Beyond species loss: Community reshuffling shapes biodiversity along the urban–rural gradient

Journal of Applied Ecology, Volume 63, Issue 6, June 2026.
Our results indicate that species turnover is a general ecological mechanism shaping vertebrate communities along the urban gradient, driven by taxon‐ and species‐specific responses to environmental and spatial features. Community differences primarily reflect habitat suitability rather than dispersal limitation, highlighting the potential of targeted ...
Olivia Dondina, Valerio Orioli, Pietro Tirozzi, Andrea Viviano, Emiliano Mori, Matteo Celeste, Leonardo Ancillotto   +6 more
wiley   +1 more source

Valores hematológicos e bioquímicos de periquitos-de-colar (Psittacula krameri) saudáveis adultos e alterações na estação produtiva [PDF]

, 2022
Orientador(a): Prof.(a). Dr(a). Rosangela Locatelli DittrichDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Programa de Pós-Graduação em Ciências Veterinárias.
Pinto, Gabriela Oliveira da Paz Augusto
core   +1 more source

Vector‐borne diseases‐knowledge maps

EFSA Journal, Volume 24, Issue 5, May 2026.
Abstract This scientific report provides a structured overview of the main characteristics of 25 selected vector‐borne diseases (VBDs) of potential relevance for the EU, including 12 diseases listed under the Animal Health Law (AHL) and 13 non‐listed diseases.
European Food Safety Authority (EFSA), Sofie Dhollander, Ieva Baltusyte, Fabio Bigoni, Alessandro Broglia, Jordi Figuerola, Hans‐Hermann Thulke, Miguel Angel Chueca Miranda   +7 more
wiley   +1 more source

Induction of blindness by formoguanamine hydrochloride in adult male roseringed parakeets (Psittacula krameri)

Journal of Biosciences, 2002
Formoguanamine (2,4-diamino-s-triazine) was known to be an effective chemical agent in inducing blindness in poultry chicks, but not in adult birds. The present study was undertaken to demonstrate the influences, if any, of this chemical on the visual performance and retinal histology in an adult sub-tropical wild bird the roseringed parakeet ...
Anamika, Sengupta, Yoshihiko, Obara, Tapan K, Banerji, Saumen K, Maitra   +3 more
openaire   +2 more sources

Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring-necked parakeet (Psittacula krameri)

Animal Biodiversity and Conservation, 2019
Stable isotope analyses (SIAs) have been widely used in recent years to infer the diet of many species. This isotopic approach requires using diet to tissue discrimination factors (DTDFs) for each prey type and predator tissue, i.e., to determine the ...
D. Mazzoni, N. A. Borray-Escalante, A. Ortega–Segalerva, L. Arroyo, J. González–Solís, J. C. Senar   +5 more
doaj   +3 more sources

Occurrence of gastrointestinal parasites in wild animals in State of Paraná, Brazil

Anais da Academia Brasileira de Ciências, 2018
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.
LEW K. SPRENGER, URSULA Y. YOSHITANI, ANDREIA BUZATTI, MARCELO B. MOLENTO   +3 more
doaj   +1 more source