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1 April 2004 Evaluating stress in a Hawaiian honeycreeper, Paroreomyza montana, following translocation
Jim J. Groombridge, J. Gregory Massey, James C. Bruch, Trent R. Malcolm, Chris N. Brosius, Marcy M. Okada, Bill Sparklin
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Abstract

We used differential counts of white blood cells to determine heterophil:lymphocyte ratios in the Maui Creeper (Paroreomyza montana), an endemic, non-endangered Hawaiian honeycreeper, as a measure of stress in response to varying distance and handling technique during translocations. The Maui Creeper was used as an in situ experimental model for the Po'ouli (Melamprosops phaeosoma), an endangered species for whom translocation is critical for its recovery. We translocated 18 Maui Creepers across rugged terrain by hand-carrying individual birds for two distances (1.0 or 2.5 km) inside portable containers. We tested two methods of confinement that varied in the degree of physical restraint during translocation. Birds translocated across longer distances developed significantly higher heterophil:lymphocyte ratios than those moved shorter distances. However, no significant difference was seen between container types. Our findings build on a previous study of stress response in passerines, and indicate that using heterophil:lymphocyte ratios to measure stress may be a valuable tool for evaluating management practices for other critically endangered passerines.

Jim J. Groombridge, J. Gregory Massey, James C. Bruch, Trent R. Malcolm, Chris N. Brosius, Marcy M. Okada, and Bill Sparklin "Evaluating stress in a Hawaiian honeycreeper, Paroreomyza montana, following translocation," Journal of Field Ornithology 75(2), 183-187, (1 April 2004). https://doi.org/10.1648/0273-8570-75.2.183
Received: 9 September 2002; Accepted: 1 August 2003; Published: 1 April 2004
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KEYWORDS
heterophil lymphocyte ratio
honeycreeper
Po'ouli
translocation
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