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Inheritance of organochlorine resistance in the cattle tick Rhipicephalus appendiculatus Neumann (Acari: Ixodidae) in East Africa

  • J. H. M Lourens (a1)

Abstract

Single pair progenies (sibships) of three organochlorine resistant strains of Rhipicephalus appendiculatus Neum. from Kenya, Tanzania and Uganda showed similarity in dose-mortality response to γ-BHC. The homogeneous dose-mortality responses indicated such larvae have a similar high level of resistance, whereas the stepped nature of the dose-mortality curve for the heterogeneous sibships indicated that these sibships include both resistant and susceptible larvae. Crosses between the Uganda strain and the susceptible reference strain (Mwanza) indicated that a dominant gene exerts a major influence on resistance to γ-BHC and dieldrin. For some heterogeneous sibships the dose-mortality response indicated a significant departure from a 1:1 ratio of susceptible: resistant larvae. The deviation could be reduced by increasing the susceptible background genotype. The deviation differed in direction for different crosses, suggesting a genetic influence. The deviations occurred in all three resistant strains. Line selection of deviating sibships in either direction was unsuccessful.

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Abbott, W. S. (1925). A method of computing the effectiveness of an insecticide.—J. econ. Ent. 18, 265267.
Anon. (1971). Recommended methods for the detection and measurement of resistance of agricultural pests to pesticides. Tentative method for larvae of cattle ticks, Boophilus spp.—FAO method no. 7.—Pl. Prot. Bull. F. A. O. 19, 1518.
Bailey, K. P. (1960). Notes on the rearing of Rhipicephalus appendiculatus and their infection with Theileria parva for experimental transmission.—Bull. epizoot. Dis. Afr. 8, 3343.
Baker, J. A. F. (1978). Resistance to ixodicides by ticks in Africa south of the equator with some thoughts on tick control in this area.—pp. 101113in Wilde, J. K. H. (Ed.). Tick-borne diseases and their vectors. Proceedings of an International Conference held in Edinburgh from the 27th September to the 1st October 1976 organized by the Centre for Tropical Veterinary Medicine.—573 pp. Univ. Edinburgh, Centre for Tropical Veterinary Medicine.
Jongejan, F. & Lourens, J. H. M. (in press). Cross-resistance pattern to pyrethrum and synthetic pyrethroids in organochlorine-resistant strains of Rhipicephalus appendiculatus Neumann, 1901.—Z. angew. Ent.
Lourens, J. H. M. & van de Klashorst, G. (1979). Organochlorine susceptible and tolerant populations of the brown ear tick, Rhipicephalus appendiculatus Neumann, 1901, in East Africa.—Z. angew. Ent. 87, 230238.
Lourens, J. H. M. & Lyaruu, D.. (1979). Susceptibility of some East African strains of Rhipicephalus appendiculatus to cholinesterase inhibiting acaricides.—PANS 25, 135142.
Lourens, J. H. M. & Tatchell, R. J.. (1979). Studies on acaricide resistance in Rhipicephalus evertsi evertsi Neumann (Acarina: Ixodidae) in East Africa. Identification and inheritance of a resistance factor to organochlorines.—Bull. ent. Res. 69, 235242.
Shaw, R. D. (1966). Culture of an organophosphorus-resistant strain of Boophilus microplus (Can.) and an assessment of its resistance spectrum.—Bull. ent. Res. 56, 389405.
Stone, B. F. & Haydock, K. P. (1962). A method for measuring the acaricide-susceptibility of the cattle tick Boophilus microplus (Can.).—Bull. ent. Res. 53, 563578.
Tatchell, R. J. (1974). The use of the packet test for detecting acaricide resistance in African ticks.—pp. 993994 in Proc. 3rd Int. Congress of Parasitology Munich 1974 2, 5761184.—Vienna, Austria, Facta Publication.

Inheritance of organochlorine resistance in the cattle tick Rhipicephalus appendiculatus Neumann (Acari: Ixodidae) in East Africa

  • J. H. M Lourens (a1)

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