Ectoparasites affect hemoglobin and percentages of immature erythrocytes but not hematocrit in nestling Eastern Bluebirds

Reneé E. Carleton

doi:10.1676/07-158.1

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Reneé E. Carleton^*,**

^*Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30603, USA
^**Current address: Department of Biology, School of Mathematical and Natural Sciences, Berry College, Mount Berry, GA 30149 USA; rcarleton@berry.edu

Abstract

Populations of the hematophagous mite, Dermanyssus prognephilus, within Eastern Bluebird (Sialia sialis) nests were manipulated using a pyrethrin-based insecticide to examine effects on nestling growth, selected hematological parameters, and fledging success. There was no difference in body mass, fledging success, estimated white blood cell counts, or hematocrits of infested versus non-infested nestlings. However, infested nestlings had a 25.0% reduction in hemoglobin and a 20.5% increase in immature erythrocytes. These findings suggest a physiological response to parasite feeding that may affect post-fledging survival.

Citation Download Citation

Reneé E. Carleton "Ectoparasites affect hemoglobin and percentages of immature erythrocytes but not hematocrit in nestling Eastern Bluebirds," The Wilson Journal of Ornithology 120(3), 565-568, (1 September 2008). https://doi.org/10.1676/07-158.1

Received: 13 October 2007; Accepted: 1 January 2008; Published: 1 September 2008

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