RESUMO
The aviation sector is believed to be responsible for considerable environmental damage attributed to emission of a large number and amount of pollutants. Airports are often surrounded by forest fragments and humid areas that attract birds of prey and hence may potentially serve as useful bioindicators. The aim of the present study was to examine genotoxic potential in raptors exposed to airport pollution using the micronucleus (MN) test and morphological changes as evidenced by bilateral symmetry. This investigation was conducted at Salgado Filho International Airport of Porto Alegre - RS as well as in private and zoological breeding grounds. The presence of metals was measured in the blood cells of the collected birds. Seventeen birds (Caracara (Polyborus) plancus) were used in this study 11 from exposed and 6 from non-exposed group. The nuclear alterations clearly indicate that organisms exposed to airport pollution exhibited a significantly higher frequency of genetic damage compared to non-exposed birds. Further, manganese and chromium were detected exclusively in the blood of the exposed group. In contrast, the analysis of bilateral symmetry did not detect any significant morphologic differences between the two groups. Therefore, data indicate that blood genotoxic stress occurs in birds of prey living in civil aviation areas as evidenced by MN frequency increase and presence of manganese and chromium.
Assuntos
Aeroportos , Testes para Micronúcleos , Animais , Brasil , Monitoramento Ambiental , Micronúcleos com Defeito Cromossômico/induzido quimicamente , Dano ao DNA , Núcleo Celular/efeitos dos fármacos , Aves Predatórias , MasculinoRESUMO
Helminths are not usually considered important pathogens for birds of prey. There is a single published report of mortality in raptors due to an air sac trematode infection. We report a well-documented death case from massive infection by an air sac trematode of the family Cyclocoelidae in a wild-caught, juvenile male Snail Kite (Rostrhamus sociabilis) in Ecuador. The necropsy of a Snail Kite revealed more than 200 trematodes among air sacs, lungs, heart, gizzard, proventriculus, and liver. Within air sacs and lungs, mature flukes were associated with sacculitis, bronchitis, pneumonia, and atelectasis. Using an integrative taxonomic approach with morphological and molecular data, we identified the parasites as Bothrigaster variolaris (Trematoda: Cyclocoelidae: Ophthalmophaginae). This case provides the first evidence for the pathologic presence of air sac trematodes associated with morbidity in birds of prey in South America. Our results suggest that cyclocoelids may cause debilitation and significant clinical lesions in birds of prey, with potentially fatal consequences.
RESUMO
The method of fixation should be well tolerated and its application must be made in theshortest possible surgery and anesthesia times. This report describes the surgicalmanagement of a Harris's hawk who, on orthopedic examination, had functional impotenceof the pelvic limb right. A transverse complete fracture of the tibiotarsus was observed onradiographic examination. Closed fracture reduction was chosen and osteosynthesis withhybrid external fixator with tied-in intramedullary pin. After 30 days it was bone healingwas confirmed.(AU)
Assuntos
Animais , Fixação Interna de Fraturas/veterinária , Tíbia/cirurgia , Tarso Animal/cirurgia , Falcões/cirurgia , Aves Predatórias/cirurgiaRESUMO
The method of fixation should be well tolerated and its application must be made in theshortest possible surgery and anesthesia times. This report describes the surgicalmanagement of a Harris's hawk who, on orthopedic examination, had functional impotenceof the pelvic limb right. A transverse complete fracture of the tibiotarsus was observed onradiographic examination. Closed fracture reduction was chosen and osteosynthesis withhybrid external fixator with tied-in intramedullary pin. After 30 days it was bone healingwas confirmed.