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Mortality Factors of Dalmatian Pelicans (Pelecanus crispus) Wintering in Macedonia, Greece

Published online by Cambridge University Press:  24 August 2009

Myrto Pyrovetsi  and
Margarita Papazahariadou
Myrto Pyrovetsi
Affiliation:
Assistant Professor, Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 540 06 Thessaloniki, Greece
Margarita Papazahariadou
Affiliation:
Lecturer, Laboratory of Parasitology and Parasitic Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, 540 06 Thessaloniki, Greece.
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Extract

A survey of dead Dalmatian Pelicans (Pelecanus crispus) at Kerkini Lake, Greece, the major wintering site in Europe of this world-endangered species, was undertaken to investigate the causes of high mortality that occurred during 1991–93. In February 1991, 30% of the population wintering on the Lake (30 individuals) were found dead, the majority (85%) having died of natural causes. A loss of this magnitude does not reflect only locally or on the genetic stock of the species but is also a matter of grave concern relative to its conservation world-wide.

Most mortality of the Pelicans coincided with subzero temperatures and the Lake freezing over — conditions that direct fish to deep waters, and make them unavailable to the Pelicans. Necropsies were carried out on the carcasses of 13 Pelicans, including stomach and gizzard, etc., contents' analysis, and gross pathological, bacteriological, toxicological, and parasitological, examinations. All the carcasses found at Lake Kerkini were dehydrated and emaciated. No food was found in the digestive system of the Pelicans, but there was a heavy parasite burden. Species of seven helminth genera were detected in the carcasses, three of them (Bolbophorus, Contracaecum, and Synhimantus) being reported for the first time in Greece. Contracaecum spp. in large numbers (up to 875 worms per bird), were found in the digestive system of all the carcasses. Most parasites were observed to penetrate the wall of the gizzard, causing haemorrhages and ulcers. No evidence of chlorinated hydrocarbon contamination or bacterial infection was found. Mycotic lesions were detected in the air-sacs of one Dalmatian Pelican, which may have contributed to the death of that particular individual in connection with the parasite burden.

Type
Main Papers
Information
Environmental Conservation , Volume 22 , Issue 4 , Winter 1995 , pp. 345 - 351
Copyright
Copyright © Foundation for Environmental Conservation 1995

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References

Anderson, D.W., Jehl, J.R. Jr, Risebrough, R.W., Woods, L.A. Jr., DeWeese, L.R. & Edgecomb, W.G. (1975). Brown Pelicans: improved reproduction off the southern California coast. Science, 190, pp. 806–8, illustr.CrossRefGoogle ScholarPubMed
Anderson, D.W., Gress, F., Mais, K.F. & Kelly, P.R. (1980). Brown Pelicans as anchovy stock indicators and their relationships to commercial fishing. Cal. Coop. Oceanic Fish. Invest. Rep., 21, pp. 54–61.Google Scholar
Anderson, D.W., Gress, L.R. & Mais, K.F. (1982). Brown Pelicans: influence of food supply on reproduction. Oikos, 39, pp. 23–31.CrossRefGoogle Scholar
Artopios, E. (1980). Bird Pathology. Aristotle University of Thessaloniki, Thessaloniki, Greece: 748 pp. (in Greek).Google Scholar
Blus, L.J., Lamont, T.J. & Neely, B.S. Jr, (1979). Effects of organochlorine residues on eggshell thickness, reproduction and population status of Brown Pelicans (Pelecanus occidentalis) in South Carolina and Florida, 1969–1976. Pesticide Monitoring J., 12, pp. 172–84, illustr.Google Scholar
Cook, R.T. (1992). Trace Metals and Organochlorines in the Eggs and Diets of Dalmatian Pelicans (Pelecanus crispus) and Spoonbills (Platalea leucorodia) from Northern Greece. MSc thesis submitted to the University of Manchester, UK: 148 pp.Google Scholar
Courtney, C.H. & Forrester, D.J. (1974). Helminth parasites of the Brown Pelican in Florida and Louisiana. Proceedings of the Helminthological Society of Washington, 41(1), pp. 89–93, illustr.Google Scholar
Courtney, C.H., Forrester, D.J. & White, F.H. (1977). Anthelmintic treatment of Brown Pelicans. Journal of the American Veterinary Medical Association, 171(9), pp. 991–2, illustr.Google ScholarPubMed
Crivelli, A.J., Jerrentrup, H. & Mitchev, T. (1988). Electric power lines: a cause of mortality in Pelecanus crispus Bruch, a world endangered bird species, in Porto-Lago, Greece. Colonial Waterbirds, 11(2), pp. 301–5, illustr.CrossRefGoogle Scholar
Deardorff, T.L. & Overstreet, R.M. (1980). Contracaecum multipapillatum (= C. robustum) from fishes and birds in the Northern Gulf of Mexico. Journal of Parasitology, 66(5), pp. 853–6, illustr.CrossRefGoogle ScholarPubMed
Gerakis, P.A. (Ed.) (1992). Conservation and Management of Greek Wetlands. (Proceedings of a Greek Wetland Workshop, held in Thessaloniki, Greece, 17–21 April 1989.) IUCN, Gland, Switzerland: xii + 493 pp., illustr.Google Scholar
Githkopoulos, P.R. & Liakos, V.D. (1985). Parasites in aquatic birds. Bulletin of the Hellenic Veterinary Medical Society, 36, pp. 170–5.Google Scholar
Greve, J.H., Albers, H.F., Suto, B. & Grimes, J. (1986). Pathology of gastrointestinal helminthiasis in the brown pelican (Pelecanus occidentalis). Avian Diseases, 30(3), pp. 482–7, illustr.CrossRefGoogle ScholarPubMed
Groombridge, B. (Ed.) (1993). 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland & Cambridge, England, UK: lvi + 286 pp., illustr.Google Scholar
Himonas, C. (1970). Veterinary Parasitology. Aristotle University of Thessaloniki, Thessaloniki, Greece: 455 pp. (in Greek).Google Scholar
Hofstand, M.S., Calnek, B.W., Helmboldt, C.F., Reid, W.M. & Yoder, H.W. Jr, (1972). Diseases of Poultry. Sixth Edn. The Iowa State University Press, Ames, Iowa, USA: xvi + 1160 pp., illustr.Google Scholar
Huizinga, H.W. (1971). Contracaeciasis in Pelicaniform birds. Journal of Wildlife Diseases, 7, pp. 198–204, illustr.CrossRefGoogle ScholarPubMed
Kushlan, J.A. & Frohring, P.C. (1985). Decreases in the Brown Pelican Population in Southern Florida. Colonial Waterbirds, 8(2), pp. 83–95, illustr.CrossRefGoogle Scholar
Liu, S.K. & Edward, A.G. (1971). Gastric ulcers associated with Contracaecum spp. (Nematoda Ascaroidea) in a Steller Sea Lion and a White Pelican. Journal of Wildlife Diseases, 7, pp. 266–71, illustr.CrossRefGoogle Scholar
Ministry of the Environment (1986). Delineation of the Ramsar Convention Wetlands: Lake Kerkini. Ministry of the Environment, Athens, Greece: 91 pp., illustr.Google Scholar
Nyange, J.F.C., Mbise, A.N., Flavian, P.M. & Mbasha, E.M.S. (1983). Contracaecum microcephalum in two Pelicans: A case report. Bull. Anim. Hith. Prod. Afr., 31, pp. 301–2, illustr.Google Scholar
Oglesby, L.C. (1960). Heavy nematode infestation of White Pelican. The Auk, 77, p. 354, illustr.CrossRefGoogle Scholar
Owre, O.T. (1962). Nematodes in birds of the order Pelecaniformes. The Auk, 79, p. 114, illustr.CrossRefGoogle Scholar
Papazahariadou, M., Georgopoulou, J., Jordanidis, P. & Antoniadou-Sotiriadou, K. (1994). Incidents of death in Swans (Cygnus olor). Bulletin of the Hellenic Veterinary Medical Society, 45(1) pp. 51–4, illustr.Google Scholar
Pyrovetsi, M. (1990). Conservation and Management of the Biotopes of the Dalmatian Pelicans (Pelecanus crispus L.) in Northern Greece. Commission of the European Communities (DGXI) and Aristotle University of Thessaloniki, Thessaloniki, Greece: 145 pp.Google Scholar
Pyrovetsi, M. & Papastergiadou, E. (1992). Biological conservation implications of water-level fluctuations in a Wetland of International Importance: Lake Kerkini, Macedonia, Greece. Environmental Conservation, 19(3), pp. 235–44, illustr.CrossRefGoogle Scholar
Sarashina, T., Taniyama, H. & Yamada, J. (1987). A case of Contracaecum spiculigerum (Ascaroidea: Anisakinae): Infection of Cormorant (Phalacrocorax carbo). Japanese Journal of Veterinary Science, 49(1), pp. 15–21, illustr.Google ScholarPubMed
Schreiber, R.W. (1980). The Brown Pelican: An endangered species? BioScience, 30, pp. 742–7, illustr.CrossRefGoogle Scholar
Schreiber, R.W. & Mock, P.J. (1988). Eastern Brown Pelicans: What does 60 years of banding tell us? Journal of Field Ornithology, 59(2), pp. 171–82, illustr.Google Scholar
Soulsby, E.J.L. (1982). Helminths, Arthropods and Protozoa of Domesticated Animals. Lea & Febiger, Philadelphia, Pennsylvania, USA: 809 pp., illustr.Google Scholar
Stickel, L.F. (1973). Pesticide residues in birds and mammals. Pp. 254–312 in Environmental Pollution by Pesticides (Ed. Edwards, C. A.). Plenum Press [not available for checking].CrossRefGoogle Scholar
Stoican, E., Cocin, M. & Eustafievici, V. (1969). Anisachidoza pelicanului comun (Pelecanus onocrotalus onocrotalus L.) si a pelicanului cu coama (Pelecanus crispus Bruch). Etiologie si tratament. Bucharest — Institutul de Ceredtari Veterinare si Biopreparate Pasteur Lucranilor, 6, pp. 345–54.Google Scholar
Yamaguti, S. (1958). Systema Helminthum, Vol. I. The Digenetic Trematodes of Vertebrates, Part I. Interscience Publishers, Inc., New York & London: 979 pp.Google Scholar
Yamaguti, S. (1959). Systema Helminthum, Vol. II. The cestodes of Vertebrates. Interscience Publishers, Inc., New York & London: 860 pp., illustr.Google Scholar
Yamaguti, S. (1961). Systema Helminthum, Vol. III. The Nematodes of Vertebrates, Part I. Interscience Publishers, Inc., New York & London: 679 pp.Google Scholar