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Transmission of the human filarial parasite Mansonella Ozzardi by Culicoides phlebotomus (Williston) (Diptera: Ceratopogonidae) in coastal north Trinidad

Published online by Cambridge University Press:  10 July 2009

M. B. Nathan
M. B. Nathan
Affiliation:
United Kingdom Medical Research Council External Scientific Staff, PAHO/WHO Caribbean Epidemiology Centre, P.O. Box 164, Port of Spain, Trinidad
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Extract

Between June 1976 and November 1977, man-baited and truck-trap collections of haematophagous Diptera were made on the foreshore of Las Cuevas Bay, north Trinidad, close to a fishing village where Mansonella ozzardi infections are prevalent in man. Culicoides phlebotomus (Will.) predominated in all collections, forming 96·1% of the total catch. Analysis of blood-meals from engorged C. phlebotomus collected by truck trapping at sunset indicated frequent feeding on mammals, with feeds on man comprising 47% of those identified. Filarial larvae were found in 0·8% of 6767 females of C. phlebotomus captured on man, and five (0·08%) had infective larvae of M. ozzardi. Similarly, 1·3% of 7028 females obtained by truck trapping were infected, including nine (0·13%) with infective larvae. Growth rates of M. ozzardi in C. phlebotomus were determined by experimental infection and were used to estimate daily survival rates of wild-caught females of C. phlebotomus based on filarial growth stages found in them. The daily survival rate varied from 85 to 95% in flies 1–3 days after infection to 69% in flies six days after infection. It was estimated that a person spending one hour on the beach every morning would receive 38 infective bites from C. phlebotomus per annum.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 71 , Issue 1 , March 1981 , pp. 97 - 106
Copyright
Copyright © Cambridge University Press 1981

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References

Adamson, A. M. (1939). Observations on biting sandflies (Ceratopogonidae) in Trinidad, British West Indies.—Trop. Agric., Trin. 16, 79–81.Google Scholar
Altken, T. H. G., Wirth, W. W., Williams, R. W., Davies, J. B. & Tikasingh, E. S. (1975). A review of the bloodsucking midges of Trinidad and Tobago, West Indies (Diptera: Ceratopogonidae).—J. Ent. (B) 44, 101–144.Google Scholar
Akey, D. H. & Potter, H. W. (1979). Pigmentation associated with oogenesis in the biting fly Culicoides variipennis (Diptera: Ceratopogonidae): determination of parity.—J. med. Entomol. 16, 67–70.CrossRefGoogle ScholarPubMed
Boreham, P. F. L. (1972). Serological identification of arthropod bloodmeals and its application.—PANS 18, 205–209.Google Scholar
Buckley, J. J. C. (1934). On the development, in Culicoides furens Poey, of Filaria (=Mansonella) ozzardi Manson, 1897.—J. Helminth. 12, 99–118.CrossRefGoogle Scholar
Davies, J. B. (1973). Sandflies breeding near Las Cuevas and Maracas Beaches.—J. Trin. Fld Nat. Club 1973, 1–15.Google Scholar
Dyce, A. L. (1969). The recognition of nulliparous and parous Culicoides (Diptera: Ceratopogonidae) without dissection.—J. Aust. ent. Soc. 8, 11–15.Google Scholar
Kay, B. H. (1973). Seasonal studies of a population of Culicoides marmoratus (Skuse) (Diptera: Ceratopogonidae) at Deception Bay, Queensland.—J. Aust. ent. Soc. 12, 42–58.CrossRefGoogle Scholar
Laurence, B. R. (1963). Natural mortality in two filarial vectors.—Bull. Wld Hlth Org. 28, 229–234.Google Scholar
Muller, R. L. & Denham, D. A. (1974). A field technique for the recovery and preservation of infective filarial larvae from their vectors.—Trans. R. Soc. trop. Med. Hyg. 68, 8–9.Google Scholar
Nathan, M. B. (1981). A study of the diurnal biting and flight activity of Culicoides phlebotomus (Williston) (Diptera: Ceratopogonidae) using three trapping methods.—Bull. ent. Res. 71, 121–128.Google Scholar
Nathan, M. B., Tikasingh, E. S., Nelson, G. S., Santiago, A. & Davies, J. B. (1979). The prevalence and distribution of Mansonella ozzardi in coastal north Trinidad, W.I.—Trans. R. Soc. trop. Med. Hyg. 73, 299–302.CrossRefGoogle ScholarPubMed
Nelson, G. S. & Davies, J. B. (1976). Observations on Mansonella ozzardi in Trinidad.—Trans. R. Soc. trop. Med. Hyg. 70, 16–17.Google Scholar
Walker, A. R. (1977). Adult lifespan and reproductive status of Culicoides species (Diptera: Ceratopogonidae) in Kenya, with reference to virus transmission.—Bull. ent. Res. 67, 205–215.CrossRefGoogle Scholar
Williams, R. W. (1964). Observations on habitats of Culicoides larvae in Trinidad, W.I. (Diptera: Ceratopogonidae).—Ann. ent. Soc. Am. 57, 462–466.Google Scholar
Yaseen, M. (1974). Investigations into the possibilities of biological control of sandflies (Diptera: Ceratopogonidae).—Tech. Bull. Commonw. Inst. biol. Control no. 17, 1–18.Google Scholar