Skip to main content
×
×
Home

On Culicoides as a Vector of Onchocerca gibsoni (Cleland & Johnston, 1910)

  • J. J. C. Buckley (a1)
Extract

The problem of the vector of Onchoccrca gibsoni was investigated in Kuala Lumpur, F.M.S., where the parasite is endemic and a high percentage of cattle is infected.

For reasons which are outlined, the experimental work was confined to species of Culicoides and Lasiohelea of which 18, possibly more, species were found on cattle, some of them being found to bite cattle in very large numbers daily.

The distribution of the microfilariae of 0. gibsoni in the skin of live cattle was found to be very irregular, even within small areas of skin. In transverse sections of skin the microfilariae appear to have a maximum concentration just under the epidermis at a depth of ·05 to ·2 mm.

0·52% of 1,523 Culicoides pungens, which were dissected soon after an infective blood meal, were found to have picked up the microfilariae. 0·96% of 1,670 of this species, dissected some days after an infective blood meal, were found to have developing or mature filarial larvae in the thorax or head. 0·35% of 3,734 of this species, were found to be naturally infected with filarial larvae in the thorax or head. The difference between the experimental infection rate and the natural infection rate is shown statistically to be significant and it is concluded that C. pungens is an intermediate host of O. gibsoni.

Culicoides oxystoma, C. shortti and C. orientalis were also dissected in large numbers and were found to pick up the microfilariae of O. gibsoni; in each of these species the experimental infection rate exceeded the natural infection rate, but the difference in none of these is significant. It is concluded however, from the results obtained and from the morphological similarity of the mature larvae found in these species with that in C. pungens, that these species are also intermediate hosts of O. gibsoni.

C. peregrinus and C. buckleyi are suspected but not proven intermediate hosts. C. anophelis and/or C. anophelisv. flavcscens and Lasiohelea stimulans were found to pick up the microfilariae but only partial development was found in them. C. sumatrae and C. raripalpis also picked up the microfilariae but no development was found in them. The remaining species worked with were entirely negative. In view, however, of the very minute percentage of infection which occurs in Culicoides spp. and the large numbers which must be dissected to obtain positive results, the negative results given by these less common species are not necessarily conclusive.

Copyright
References
Hide All
Blacklock, D. B., 1926.—“The development of Onchoccrca volvulus in Simulium damnosum.” Ann. trop. Med. Parasit., xx, 148. (W.L. 1063.)
Blacklock, D. B.,1927.—“The insect transmission of Onchoccrca volvulus (Leuckart, 1893), the cause of worm nodules in man in Africa.” Brit. med. J., 1, 129133. (W.L. 3579.)
Breinl, A., 1913.—“The Life history of Onchocerca gibsoni.” Rep. Aust. Inst. trop. Med., 1417.
Buckley, J. J. C, 1937.—“On a new species of Stephanofilaria causing lesions in the legs of cattle in the Malay Peninsula.” J. Helminth., xv (4), 233242. (W.L. 11224b.)
Cilento, R. W., 1923.—“Possibilities in the transmission of Onchocerca gibsoni.” Med. J. Aust., 1 (16), 445446. (W.L. 13034.)
Cleland, J. B., 1927.—“Onchocerca gibsoni and its possible transmission by Simulium.” Brit. med. J., 2, 328. (W.L. 3579.)
Cleland, J. B., Dodd, S. & Ferguson, E. W., 1916.—“Further investigations into the etiology of worm nests in cattle due to Onchocerca gibsoni.” Dept. of Trade & Customs, Commonwealth of Australia. 141.
Daniels, C. W., 1904.—“Observations on the diseases of British Malaya.” Stud. Inst. med. Res. F.M.S., iii (1), 117. (W.L. 20655.)
Dickinson, C. G. & Hill, G. F., 1916.—“Investigations into the cause of worm nodules (Onchocerca gibsoni) in cattle.” Dept. of Trade & Customs. Commonwealth of Australia. 17
Galliard, H., 1937.—“Onchocerca cebei, espèce nouvelle, parasite des buffles du Tonkin.” Ann. Parasit. hum. comp., xv (5), 431433. (W.L. 899a.)
Gilruth, J. A. & Sweet, G., 1911.—“Onchocerca gibsoni: the cause of wormnodules in Australian cattle.” Dept. of Trade & Customs, Commonwealth of Australia. 134.
Gilruth, J. A. & Sweet, G., 1912.—“Further observations on Onchocerca gibsoni, the cause of wormnodules in cattle.” Proc. roy. Soc. Vict., xxv (1), 2330. (W.L. 16904.)
Heydon, G. M., 1927.—“Observations on the larvae of Onchoccrca gibsoni (Cleland and Johnston) in the skin of infected Cattle.” Aust. J. exp. Biol. med. Sci., iv, 6168. (W.L. 2245a.)
Johnston, T. H., 1911.—“On the occurrence of worm nodules in cattle. A Summary.” Proc. roy. Soc. Qd., xxiii, 207231. (W.L. 16903.)
Johnston, T. H., & Bancroft, M. J., 1921.—“Experiments with certain Diptcra as possible transmitters of bovine Onchocerciasis.” Proc. roy. Soc. Qd., xxxii, 3157. (W.L. 16903.)
Leiper, R. T., 1911.—“On Onchocerciasis in cattle with special reference to the structure and bionomic characters of the parasite.” Rep. loc. Govt. Bd. publ. Hlth., 45, 616. (W.L. 18307.)
Macfie, J. W. S., 1937.—“Notes on Ccratopogonidae (Diptcra).” Proc. R. ent. Soc. Lond., VI (6), 111118. (W.L. 16730a.)
Macfie, J. W. S., 1937.—“Three new species of Culicoidcs (Diptcra, Ccratopogonidae) from Malaya.” Ann. trop. Med. Parasit., xxxi (4), 469472. (W.L. 1063.)
McEachran, J. F. & Hill, G. F., 1916.—“Investigations into the cause of worm nodules (Onchoccrca gibsoni) in cattle at Darwin, Northern Territory, Australia.” Vet. J., 52, 213219. (W.L. 22518.)
Mohammed, A. S., 1931.—“The transmission of human and bovine Onchocerciasis.” Ann. trop. Med. Parasit., xxv (3–4), 509519. (W.L. 1063.)
Montpellier, J. & Lacroix, A., 1920.—“Le craw-craw ou gale filarienne: son origine dans les kystes sous coutanés à Onchoccrca volvulus.” Bull. Soc. Path, exot., XIII (4), 305315. (W.L. 5310.)
Nicoix, W., 1914.—“On the migration of the larvae of Onchocerca gibsoni through the capsule of the worm nodule.” Ann. trop. Med. Parasit., viii (3), 609621. (W.L. 1063.)
Robles, R., 1919.—“Onchocerebsc humaine au Guatemala produisant la cécité et ‘l'érysipèle du littoral’ (Erisipela de la costa).” Bull. Soc. Path, exot., xii (7), 442463. (W.L. 5310.)
Steward, J. S. 1935.—“Fistulous withers and poll-evil. Equine and bovine onchocerciasis compared, with an account of the life-histories of the parasites concerned.” Vet. Rec., xv (52), 15631575. (W.L. 22523.)
Steward, J. S. 1937.—“The occurrence of Onchocerca gulturosa Neumann in cattle in England, with an account of its life-history and development in Simulium ornatum Mg.” Parasitology, xxix (2), 212219. (W.L. 16035.)
Strong, R. P., 1931.—“Onchocerciasis in Guatemala. Preliminary Report.” Rep. tin Fruit Co., (20), 152160. (W.L. 18629c.)
Sweet, G., 1914.—“Investigations into the occurrence of onchocerciasis in cattle and associated animals in countries other than Australia.” Dept. of Trade & Customs, Commonwealth of Australia. 153.
Tuck, G. L., 1904.—“Observations on some worms found in the aortas of buffaloes and bullocks.” Stud. Inst. med. Res. F.M.S. iii (1), 1938. (W.L. 20655.)
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Helminthology
  • ISSN: 0022-149X
  • EISSN: 1475-2697
  • URL: /core/journals/journal-of-helminthology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 2 *
Loading metrics...

Abstract views

Total abstract views: 92 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 13th June 2018. This data will be updated every 24 hours.