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Wildlife disease and conservation in Hawaii: Pathogenicity of avian malaria (Plasmodium relictum) in experimentally infected Iiwi (Vestiaria coccinea)

  • C. T. Atkinson (a1), K. L. Woods (a1), R. J. Dusek (a1), L. S. Sileo (a1) and W. M. Iko (a1)...
Summary
SUMMARY

Native Hawaiian forest birds are facing a major extinction crisis with more than 75% of species recorded in historical times either extinct or endangered. Reasons for this catastrophe include habitat destruction, competition with non-native species, and introduction of predators and avian diseases. We tested susceptibility of Iiwi (Vestiaria coccinea), a declining native species, and Nutmeg Mannikins (Lonchura punctulata), a common non-native species, to an isolate of Plasmodium relictum from the island of Hawaii. Food consumption, weight, and parasitaemia were monitored in juvenile Iiwi that were infected by either single (low-dose) or multiple (high-dose) mosquito bites. Mortality in both groups was significantly higher than in uninfected controls, reaching 100% of high-dose birds and 90% of low-dose birds. Significant declines in food consumption and a corresponding loss of body weight occurred in malaria-infected birds. Both sex and body weight had significant effects on survival time, with males more susceptible than females and birds with low initial weights more susceptible than those with higher initial weights. Gross and microscopic lesions in malaria fatalities included massive enlargement of the spleen and liver, hyperplasia of the reticuloendothelial system with extensive deposition of malarial pigment, and overwhelming anaemia in which over 30% of the circulating erythrocytes were parasitized. Nutmeg Mannikins, by contrast, were completely refractory to infection. Our findings support previous studies documenting high susceptibility of native Hawaiian forest birds to avian malaria. This disease continues to threaten remaining high elevation populations of endangered native birds.

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Al-Dabagh M. A. (1966). Mechanisms of Death and Tissue Injury in Malaria: with special reference to five species of avian malaria, Baghdad: Shafik Press.
Applegate J. E. (1970). Population changes in latent avian malaria infections associated with season and corticosterone treatment. Journal of Parasitology 56, 439–43.
Atkinson I. A. E. (1977). A reassessment of factors, particularly Rattus rattus L., that influenced the decline of endemic forest birds in the Hawaiian Islands. Pacific Science 31, 109–33.
Banko W. E. & Banko P. C. (1976). Role of food depletion by foreign organisms in the historical decline of Hawaiian forest birds. In Proceedings of the First Conference in Natural Sciences, Hawaii Volcanoes National Park, (ed. Smith C. W.), pp. 2934. Honolulu: Cooperative National Park Resources Studies Unit.
Berger A. J. (1988). Hawaiian Birdlife, 2nd edn.Honolulu: University Press of Hawaii.
Black F. L. (1992). Why did they die? Science 258, 1739–40.
Carothers J. H. (1986 a). The effects of retreat site quality on interference related behavior among Hawaiian honeycreepers. The Condor 88, 421–6.
Carothers J. H. (1986 b). Behavioral and ecological correlates of interference competition among some Hawaiian Drepanididae. The Auk 106, 564–74.
Cox D. R. & Oakes D. (1984). Analysis of Survival Data, New York: Chapman and Hall.
Dobson A. P. & May R. M. (1986). Disease and conservation. In Conservation Biology: The Science of Scarcity and Diversity, (ed. Soule M. E.), pp. 345365. Sunderland, Massachusetts: Sinauer Associates, Inc.
Fancy S. G., Pratt T. K., Lindsey G. D., Harada C. K., Parent A. H. Jr & Jacobi J. D. (1993). Identifying sex and age of Apapane and Iiwi on Hawaii. Journal of Field Ornithology 64, 262–9.
Fink E. (1968). Experimentelle Infektion von Kanarien mit Plasmodium cathemerium Hartman, 1927, durch den Stich infizierter Müchen (Culex pipiens L.) und durch inokulation isolierter sporozoiten. Zeitschrift für Parasitenkunde 31, 232–53.
Freed L. A., Conant S. & Fleischer R. C. (1987). Evolutionary ecology and radiation of Hawaiian passerine birds. Trends in Ecology and Evolution 2, 196293.
Friend M. & Pearson G. L. (1973). Duck plague: the present situation. Proceedings of the Annual Conference of the Western Association of State Game and Fish Commissioners 53, 315–25.
Godfrey R. D. Jr, Fedynich A. M. & Pence D. B. (1987). Quantification of hematozoa in blood smears. Journal of Wildlife Diseases 23, 558–65.
Coff M. L. & Van Riper C. III (1980). Distribution of mosquitoes (Diptera: Culicidae) on the east flank of Mauna Loa volcano, Hawaii. Pacific Insects 22, 178–88.
Haberkorn A. (1968). Zur hormonellen Beeinflussung von Haemoproteus-Infektionen. Zeitschrift für Parasitenkunde 31, 108–12.
Harlow E. & James D. (1988). Antibodies. A Laboratory Manual, Cold Spring Harbor Laboratory, pp. 92137.
Hewitt R. I., Richardson A. P. & Seager L. D. (1942). Observations on untreated infections with Plasmodium lophurae in twelve hundred young white pekin ducks. American Journal of Hygiene 36, 362–73.
Jacobi J. D. & Atkinson C. T. (1995). Hawaii's endemic birds. In Our Living Resources: a Report to the Nation on the Distribution, Abundance, and Health of U.S. Plants, Animals, and Ecosystems, (ed. LaRoe E. T., Farris G. S., Puckett C. E., Doran P. D. & Mac M. J.), pp. 376381. Washington, DC: U.S. Government Printing Office.
James H. F. & Olson S. L. (1991). Descriptions of thirty-two new species of birds from the Hawaiian Islands: Part II. Passeriformes. Ornithological Monographs No. 46, 188.
Jeffery G. M. (1962). Survival of trophozoites of Plasmodium berghei and Plasmodium gallinaceum in glycerolized whole blood at low temperatures. Journal of Parasitology 48, 601–6.
Kamis A. B. & Ibrahim J. B. (1989). Effects of testosterone on blood leukocytes in Plasmodium berghei-infected mice. Parasitology Research 75, 611–13.
Kirch P. V. (1982). The impact of prehistoric Polynesians on the Hawaiian ecosystem. Pacific Science 36, 114.
Kirk R. E. (1982). Experimental Design: Procedures for the Behavioral Sciences. New York: Brooks/Cole Publishing Co.
Mcneill W. H. (1976). Plagues and Peoples. Garden City: Anchor Press.
Merton D. V. (1978). Controlling introduced predators and competitors on islands. In Endangered Birds: Management Techniques for Preserving Threatened Species, (ed. Temple S. A.), pp. 121128. Madison: University of Wisconsin Press.
Mountainspring S. & Scott J. M. (1985). Interspecific competition among Hawaiian forest birds. Ecological Monographs 55, 219–39.
Newton I. (1989). Synthesis. In Lifetime Reproduction in Birds, (ed. Newton I.), pp. 441469. London: Academic Press.
Pruett-Jones S. G., Pruett-Jones M. A. & Jones H. I. (1991). Parasites and sexual selection in a New Guinea avifauna. Current Ornithology 8, 213–45.
Ralph C. J. & Fancy S. G. (1995). Demography and movements of Apapane and Iiwi in Hawaii. The Condor 97, 729–42.
Samuel M. D. & Fuller M. R. (1994). Wildlife radiotelemetry. In Research and Management Techniques for Wildlife and Habitats, (ed. Brookhout T. A.), pp. 370418, 5th edn., Bethesda, Maryland: The Wildlife Society.
Sas Institute Inc. (1990). SAS/STAT user's guide, version 6, vol. 1, 4th edn.Cary, North Carolina: SAS Institute, Inc.
Schuurs A. H. W. M. & Verheul H. A. M. (1990). Effects of gender and sex steroids on the immune response. Journal of Steroid Biochemistry 35, 157–72.
Scott G. R. (1981). Rinderpest. In Infectious Diseases of Wild Mammals, 2nd edn. (ed. Davis J. W., Karstad L. H. & Trainer D. O.), pp. 1830. Ames: Iowa State University Press.
Scott J. M., Kepler C. B., Van Riper C. III & Fefer S. I. (1988). Conservation of Hawaii's vanishing avifauna. Bioscience 38, 238–53.
Scott J. M., Mountainspring S., Ramsey F. I. & Kepler C. B. (1986). Forest bird communities of the Hawaiian Islands: their dynamics, ecology, and conservation. Studies in Avian Biology 9, 1431.
Toft C. A. (1991). Current theory of host–parasite interactions. In Bird-Parasite Interactions: Ecology, Evolution, and Behavior (ed. Loye J. E. & Zuk M.), pp. 315. Oxford: Oxford University Press.
Van Riper C. III (1991). The impact of introduced vectors and avian malaria on insular passeriform bird populations in Hawaii. Bulletin of the Society for Vector Ecology 15, 5983.
Van Riper C. III, Atkinson C. T. & Seed T. M. (1994). Plasmodia of birds. In Parasitic Protozoa, vol. 7 (ed. Kreier J. P.) pp. 73140. New York: Academic Press.
Van Riper C. III, Van Riper S. G., Goff M. L. & Laird M. (1986). The epizootiology and ecological significance of malaria in Hawaiian land birds. Ecological Monographs 56, 327–44.
Warner R. E. (1968). The role of introduced diseases in the extinction of the endemic Hawaiian avifauna. The Condor 70, 101–20.
Wunderlich F., Marinovski P., Peter W., Benten M., Schmitt-Wrede H.-P. & Mossmann H. (1991). Testosterone and other gonadal factor(s) restrict the efficacy of genes controlling resistance to Plasmodium chabaudi malaria. Parasite Immunology 13, 357–67.
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Parasitology
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