Free-living birds are not only susceptible to certain infectious diseases; wild bird populations serve as reservoirs of several important diseases of public health concern. Bacterial and viral diseases endemic in populations of free-living birds such as tuberculosis, avian influenza, arboviral infections, and enteropathogens have been classified as emerging or reemerging. Providing care to wild avian patients increases the opportunity for direct contact with infected birds and the possibility of transmission of infectious disease to human handlers. Awareness of disease potential is critical to disease monitoring of wild populations and will allow for the implementation of precautionary measures when working with wild avian species. Biosecurity measures designed to minimize risk must be evaluated by individual facilities.
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http://dx.doi.org/10.1016/j.cvex.2011.05.008 | DOI Listing |
Vet Med Int
December 2024
Clinic of Ruminants, University of Veterinary Medicine and Pharmacy in Košice, Komenského 73, Košice 041 81, Slovakia.
The objective of this study was to characterize the distribution of serum proteins in laying hens reared under cage-free open farm conditions and to evaluate the changes in the concentrations of serum protein fractions throughout the 1-year laying period. Ten Dekalb White white-egg-laying hens were blood sampled from the wing vein at 17, 22, 29, 38, 50, 60, and 70 weeks of age. Egg laying was observed at 18 weeks of age.
View Article and Find Full Text PDFPeerJ
December 2024
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, United States of America.
Plastic pollution is a global threat and occurs in almost every marine ecosystem. The amount of plastic in the ocean has increased substantially over the past decade, posing a mounting threat to biodiversity. Seabirds, typically top predators in marine food chains, have been negatively affected by plastic pollution.
View Article and Find Full Text PDFVet Res Commun
November 2024
Laboratório de Aves Aquáticas e Tartarugas Marinhas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, CEP 96203-900, Brazil.
Dispersal patterns of zoonotic pathogens can be strongly influenced by mobility and contact among hosts. Toxoplasma gondii infection has been documented in many avian species, however, there is little information regarding free-living seabird populations. Leptospira can infect domestic and wild animals, with birds being potential carriers of the bacteria.
View Article and Find Full Text PDFSci Total Environ
December 2024
Unité Physiologie Moléculaire et Adaptation, UMR7221-Muséum National d'Histoire Naturelle, CNRS, Paris, France; Department of Ecological and Biological Sciences, University of Tuscia, Largo dell'Università snc, 01100 Viterbo, Italy.
Wild animals are exposed to a variety of anthropogenic stressors that may result in loss of physiological homeostasis. One main consequence of this stress exposure is the increased vulnerability to pathogens. We addressed the hypothesis that energetic unbalance and alterations of immune effectors are key proximate mechanisms underlying this vulnerability, by quantifying the gene expression of magnificent frigatebird Fregata magnificens chicks affected by a highly lethal viral disease, whose appearance is favoured by food limitation in this species.
View Article and Find Full Text PDFJ Neuroendocrinol
October 2024
Department of Zoology, University of Allahabad, Prayagraj, India.
The alterations of phenotypic traits (morphology, endocrine physiology, and behavior) in response to predictable environmental cues across life-history stages in seasonally breeding birds enable successful culmination of reproduction. The present study elucidated the plasticity of the hypothalamic-pituitary-adrenal (HPA) axis in a subtropical free-living finch, Amandava amandava amandava, and suggests the crucial role of the baseline corticosterone (CORT) to coordinate energetic readiness across life-history stages. Birds were captured monthly from an area (25.
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