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Ticks (Acarina, Ixodoidea) of the northern regions of the Somali Democratic Republic

Published online by Cambridge University Press:  10 July 2009

R. G. Pegram
R. G. Pegram
Affiliation:
British Veterinary Team, Hargeisa, Somali Democratic Republic
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Abstract

In this survey of distribution and prevalence of adult ticks (Acarina, Ixodoidea) parasitising domestic animals in the northern regions of the Somali Democratic Republic, 26 species were identified. The ten most common species were widely distributed with Hyalomma anatolicum anatolicum Koch, H. dromedarii Koch, H. erythraeum Tonelli-Rondelli, H. impeltatum Schulze & Schlottke and Rhipicephalus sanguineus group more common in the drier vegetation zones, and H. marginatum rufipes Koch, H. truncatum Koch, R. e. evertsi Neum., R. pravus Dön. and R. pulchellus (Gerst.) more common in the wetter woodland, evergreen and forested zones. Four species, Amblyomma gemma Dön., A. variegatum (F.), Boophilus decoloratus Koch and R. simus Koch, were confined to the wooded zones above 1200 m altitude. Species collected less frequently were Argas persicus (Oken), Amblyomma falsomarmoreum Tonelli-Rondelli, H. anatolicum excavatum Koch, H. m. marginatum Koch, H. m. turanicum Pom., H. punt Hoogst., Kaiser & Pedersen, Ornithodoros savignyi (Aud.), R. armatus Pocock and R. longicoxatus Neum. Ambylomma lepidum Dön. was represented only by a few specimens introduced on nomadic livestock.

Nearly 60% of the total number of ticks collected were R. pulchellus. This species is considered to be the main vector of Nairobi sheep disease (NSD) virus in northern Somalia. NSD is the most important tickborne disease in sheep and goats and causes considerable economic losses to the Somali livestock industry. A. gemma and A. variegatum are probably the vectors of Cowdria ruminantium (heartwater) in sheep and goats in the western highlands. These two ticks are also incriminated in the spread of Dermatophilus congolensis infection (streptothricosis). R. e. evertsi may be the vector of Babesia motasi in sheep and goats. Boophilus decoloratus is probably the vector of Babesia bigemina in cattle in the western highlands. Various tick species may be associated with bacterial abscesses of feet and lymph nodes in sheep and goats.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 66 , Issue 2 , June 1976 , pp. 345 - 363
Copyright
Copyright © Cambridge University Press 1976

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References

Anon. (1955). [Reviews of annual reports.] Somaliland Protectorate. Department of Agriculture and Veterinary Services 1954.—Bull, epizoot. Dis. Afr. 3, 273.Google Scholar
Anon. (1956). [Reviews of annual reports.] Somaliland Protectorate. Division of Animal Husbandry 1955.—Bull, epizoot. Dis. Afr. 4, 210.Google Scholar
Caisey, P. (1968). Epidemiologie des rickettsialoses humaines et animates transmises par les Ixodoidea en Afrique.—123 pp., maps 1–6. Thesus (École Nat. Vet., Lyon).Google Scholar
Drake-Brockman, R. E. (1913). On the occurrence of an epidemic of relapsing fever in Bulhar, British Somaliland.—J. Lond. Sch. trop. Med. 2, 195–199.Google Scholar
Drake-Brockman, R. E. (1915). On an epidemic of African tick fever among the troops in British Somaliland.—Trans. R. Soc. trop. Med. Hyg. 8, 201–211.CrossRefGoogle Scholar
Drake-Brockman, R. E. (1920). Ticks and relapsing fever.—Br. med. J. 1, 273.CrossRefGoogle Scholar
Dukatsenko, V. G. (1970). The veterinary service of the Somali Peoples' Republic.—Veterinariya 47 No. 9, 118–119. [In Russian.]Google Scholar
Edelsten, R. M. (1975). The distribution and prevalence of Nairobi sheep disease and other tick-borne infections of sheep and goats in northern Somalia.—Trop. anim. Hlth Prod. 7, 29–34.CrossRefGoogle Scholar
Evans, S. A. (1963). Heartwater (rickettsiosis) in northern Somalia.—Bull, epizoot. Dis. Afr. 11, 232–234.Google Scholar
Grimaldi, V. (1934). Gli Ixodidi delle Colonie Italiane e le malattie da essi trasmesse.—Archoital. Sci. med. colon. 15, 504–513.Google Scholar
Hemming, C. F. (1966). The vegetation of the northern region of the Somali Republic.—Proc. Linn. Soc. Lond. 177, 173–250.CrossRefGoogle Scholar
Hewett, J. L. & Roesner, W. (1972). The hides, skins, leather and footwear economy in Somalia.—262 pp., Mogadiscio.Somali Government.Google Scholar
Hoogstraal, H. (1953). On ticks (Ixodidae) of southern French Somaliland and the rediscovery of Rhipicephalus longicoxatus Neumann, 1905.—Ann. ent. Soc. Am. 46, 393–398.CrossRefGoogle Scholar
Hoogstraal, H. (1955). Notes on African Haemaphysalis ticks. II. The ground-squirrel parasites, H. calcarata Neumann, 1902, and H. houyi Nuttall and Warburton, 1915 (Ixodoidea, Ixodidae).—J. Parasit. 41, 361–373.CrossRefGoogle Scholar
Hoogstraal, H. (1956). African Ixodoidea. I. Ticks of the Sudan (with special reference to Equatoria Province and with preliminary reviews of the genera Boophilus, Margaropus, and Hyalomma).—1101 pp. Washington, D.C., Department of the Navy, Bureau of Medicine and Surgery.Google Scholar
Hoogstraal, H. & Kaiser, M. N. (1959). Observations on Egyptian Hyalomma ticks (Ixodoidea, Ixodidae). 5. Biological notes and differences in identity of H. anatolicum and its subspecies anatolicum Koch and excavatum Koch among Russian and other workers. Identity of H. lusitanicum Koch.—Ann. ent. Soc. Am. 52, 243–261.CrossRefGoogle Scholar
Hoogstraal, H., Kaiser, M. N. & Pedersen, E. C. (1969). Hyalomma (Hyalommina) punt n. sp., (Ixodoidea, Ixodidae), a relict parasite of domestic animals and gazelles in arid areas of northern Somali Republic.—Ann. ent. Soc. Am. 62, 415–419.CrossRefGoogle Scholar
Hunt, J. A. (1951). A general survey of the Somaliland Protectorate, final report on an economic survey and reconnaissance of the British Somaliland Protectorate, 1944–1950.—203 pp. London, Crown Agents.Google Scholar
Kaiser, M. N. & Hoogstraal, H. (1963). The Hyalomma ticks (Ixodoidea, Ixodidae) of Afghanistan.—J. Parasit. 49, 130–139.CrossRefGoogle ScholarPubMed
Kaiser, M. N. & Hoogstraal, H. (1964). The Hyalomma ticks (Ixodoidea, Ixodidae) of Pakistan, India, and Ceylon, with keys to subgenera and species.—Acarologia 6, 257–286.Google Scholar
Kaiser, M. N. & Hoogstraal, H. (1968). Redescription of Hyalomma (H.) erythraeum Tonelli-Rondelli (resurrected), description of the female and immature stages, and hosts and distribution in Ethiopa and Somali Republic.—Ann. ent. Soc. Am. 61, 1228–1235.CrossRefGoogle Scholar
Mares, R. G. (1954). Animal husbandry, animal industry, and animal disease in the Somaliland Protectorate.—Br. vet. J. 110, 411–423, 470–481.CrossRefGoogle Scholar
Morel, P. C. & Rodhain, F. (1973). Contribution à la connaissance des tiques du sud de l'Éthiopie. Deuxième partie.—Bull. Soc. Path. exot. 66, 207–215.Google Scholar
Morel, P. C. & Vassiliades, G. (1963). Les Rhipicephalus du groupe sanguineus: espèces africaines (Acariens, Ixodoidea).—Revue Elev. Med. vet. Pays trop. n.s. 15, 343–386 (1962).CrossRefGoogle Scholar
Neumann, L. G. (1922). Acariens. Ixodidae.—Résult. Sci. Voyage Rothschild Ethiopie et Afr. Orient. Anglaise (1904–1905), pp. 108–125.Google Scholar
Peck, E. F. (1973). Somaliland Protectorate 1924–1960. In West, G. P. (Ed.) History of the overseas veterinary services. Part II, 255–265. London, British Veterinary Association.Google Scholar
Pegram, R. G. (1973). An unusual form of lymphadenitis in sheep and goats in the Somali Democratic Republic.—Trop. anim. Hlth Prod. 5, 35–39.CrossRefGoogle Scholar
Pellegrini, D. (1950). La gastro-enterite emorragica delle pecore. Esperimenti di trasmissione col “Rhipicephalus pulchellus”.—Boll. Soc. ital. Med. Ig. trop Sez. Eritrea 10, 164–170.Google Scholar
Plowright, W. (1956). Cutaneous streptothricosis of cattle: I. Introduction and epizootiological features in Nigeria.—Vet. Rec. 68, 350–355.Google Scholar
Pocock, R. I. (1900). Chilopoda and Arachnida.—Proc. zool. Soc. Lond. 1, 48–55.CrossRefGoogle Scholar
Riek, R. F. (1968). Babesiosis. In Weinman, D. & Ristic, M. (Eds.). Infectious blood diseases of man and animals. Diseases caused by Protista. Volume II. The pathogens, the infections, and the consequences.—219–268. New York, Academic Press.Google Scholar
Robinson, L. E. (1926). Ticks. A monograph of the Ixodoidea. Part IV. The genus Amblyomma.—302 pp. Cambridge, University Press.Google Scholar
Royal Veterinary College Ethiopia Research Team (RVCERT) (1971). A veterinary survey of cattle and sheep in the Jijiga Awraja, Harar Province, Ethiopia, 1st July 1971–10th September 1971.—67 pp. London, Royal Veterinary College Ethiopia Research Team.Google Scholar
Smith, M. W. (1969). Variations in tick species and populations in the Bugisu district of Uganda. Part II: the effects of altitude, climate, vegetation and husbandry on tick species and populations.—Bull, epizoot. Dis. Afr. 17. 77–106.Google Scholar
Speke, J. H. (1864). What led to the discovery of the source of the Nile.—372 pp. Edinburgh.Google Scholar
Stella, E. (1940). Nuovi dati sugli ixodidi dell'Africa Orientale Italiana.—Riv. Biol. Colon. 3, 431–435.Google Scholar
Theiler, G. (1947). Ticks in the South African zoological survey collection. Part IV.—Little known African rhipicephalids.—Onderstepoort J. vet. Sci. Anim. Ind. 21, 253–300.Google Scholar
Theiler, G. & Robinson, B. N. (1953). Ticks in the South African zoological survey collection. Part VII. Six lesser known African rhipicephalids.—Onderstepoort J. vet. Res. 26, 93–136.Google Scholar
Theiler, G. & Salisbury, L. E. (1959). Ticks in the South African zoological survey collection. Part IX. “The Amblyomma marmoreum group”.—Onderstepoort J. vet. Res. 28, 47–124.Google Scholar
Walker, J. B. (1955). Rhipicephalus pulchellus Gerstäcker 1873: a description of the larva and nymph with notes on the adults and on its biology.—Parasitology 45, 95–98.CrossRefGoogle ScholarPubMed
Walker, J. B. (1956). Rhipicephalus pravus Dönitz, 1910.—Parasitology 46, 243–260.CrossRefGoogle ScholarPubMed
Walker, J. B. (1970). Notes on the common tick species of East Africa. 3rd edn.—23 pp. Nairobi, Cooper, McDougall & Robertson (E.A.) Ltd.Google Scholar
Walker, J. B. (1974). The ixodid ticks of Kenya. A review of present knowledge of their hosts and distribution.—220 pp. London, Commonwealth Institute of Entomology.Google Scholar
Watson, J. M. (1954). [Reviews of annual reports.] Somaliland Protectorate 1953.—Bull. epizoot. Dis. Afr. 2, 293–294.Google Scholar
Watson, J. M. (1958). [Reviews of annual reports.] Somaliland Protectorate Department of Agricultural and Veterinary Services 1956.—Bull, epizoot. Dis. Afr. 6, 45.Google Scholar
Whittick, R. J. (1938). On a new tick from British Somaliland. Parasitology 30, 333–338.CrossRefGoogle Scholar
Yeoman, G. H. & Walker, J. B. (1967). The ixodid ticks of Tanzania. A study of zoogeography of the Ixodidae of an East African country.—215 pp. London, Commonwealth Institute of Entomology.Google Scholar