Treatment of capture myopathy in shorebirds: a successful trial in northwestern Australia
Shorebirds held during banding activities can develop muscle cramps, especially when temperatures are high and birds are heavy. Such capture myopathy can be fatal or render birds vulnerable to predators. We rehabilitated Great Knots (Calidris tenuirostris), Red Knots (C. canutus), Bar-tailed Godwits...
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Veröffentlicht in: | Journal of field ornithology 2004-04, Vol.75 (2), p.157-164 |
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Zusammenfassung: | Shorebirds held during banding activities can develop muscle cramps, especially when temperatures are high and birds are heavy. Such capture myopathy can be fatal or render birds vulnerable to predators. We rehabilitated Great Knots (Calidris tenuirostris), Red Knots (C. canutus), Bar-tailed Godwits (Limosa lapponica), and Red-necked Stints (C. ruficollis) in northwestern Australia. We kept birds in slings (if cramped) or in a small cage (if able to walk) and gave them daily standing exercises. Recovery of severely cramped birds took up to 14 d, which may reflect a critical period of tissue regeneration. Of 15 knots (8 Red and 7 Great) taken into captivity, 12 were rehabilitated and released. The resighting rate after the breeding season of the rehabilitated birds was the same as for other birds color-banded during our research, indicating that the rehabilitation was successful. We conclude that rehabilitating cramped shorebirds is possible though time-consuming. A sex bias in susceptibility to capture myopathy is suggested by seven of the eight Red Knots treated being male; the sex ratio in the local population was 1:1.Original Abstract: Tratamiento de miopatia en playeros: casos exitosos en la parte noroeste de Australia Los playeros atrapados durante actividades de anillamiento pueden desarrollar calambres o miopatia muscular particularmente cuando las temperaturas son altas y las aves son pesadas. La miopatia puede ser fatal o dejar a las aves sumamente vulnerables a depredadores. Recientemente, rehabilitamos individuos de Calidris tenuirostris, C. canutus, C. ruficollis y Limosa lapponica en trabajos llevandose a cabo en la parte noroeste de Australia. Mantuvimos a las aves en cabestrillos si estaban acalambradas o en una pequena jaula, (si no podian caminar) y los sometimos a un regimen diario de ejercicios. La recuperacion de individuos con miopatia severa, tomo hasta 14 dias, lo que pudiera reflejar un periodo critico para la regeneracion de tejidos. De un total de 15 playeros (ocho C. canutus y siete C. tenuirostris) que fueron llevados a cautiverio 12 se rehabilitaron y fueron liberados. La tasa de reavistamiento de estas aves despues de la epoca de reproduccion fue la misma que para otros playeros anillados durante el periodo de investigacion, lo que indica que la rehabilitacion fue exitosa. Concluimos que la rehabilitacion de aves con miopatia es posible, aunque consume mucho tiempo. Se sugiere una suceptibilidad mayor (a la miopatia) en los ma |
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ISSN: | 0273-8570 |
DOI: | 10.1043/0273-8570(2004)075(0157:TOCMIS)2.0.CO;2 |