Diurnal And Seasonal Activity of Unfed Adult Rhipicephalus Appendiculatus (Acarina: Ixodidae) in Relation to Some Intrinsic and Extrinsic Factors—II

Factors Affecting Vertical Distribution of Ticks In the Habitat
  • D. K. Punyua
  • R. M. Newson
  • M. J. Mutinga


When marked adults of the tick Rhipicephalus appendiculatus were released into 25 ° 25 cm plots in the field, their vertical distribution in the habitat was assessed after recovery, by comparing the number of ticks on the vegetation with those on the soil surface. In the hot dry season, 73% of the ticks were recovered. Of these a third were on the vegetation and two thirds at the soil surface. Out of the 67% recovered in the wet season, only 15% were found at the soil surface and the rest on the vegetation. In the cool dry season, 75% were recovered with roughly equal proportions on the vegetation and the soil surface. This suggests that only a third of the ticks would be available to be picked up by the hosts during the hot dry season. Two thirds would be available during the wet season and only half were available during the cool dry season.

Key Words

Rhipicephalus appendiculatus vertical distribution vegetation soil hot dry season wet season cool dry season temperature relative humidity activity 


  1. Camin J. H. and Drenner R. W. (1978) Climbing behaviour and host-finding of larval rabbit ticks (Haemaphysalis leporispalustris). J. Parasit. 64, 905–909.CrossRefGoogle Scholar
  2. Lees A. D. (1948) The sensory physiology of the sheep tick (Ixodes ricinus L.). J. exp. Biol. 25, 145–207.Google Scholar
  3. Lees A. D. and Milne A. (1951) The seasonal and diurnal activities of individual sheep ticks (Ixodes ricinus L.). Parasitology 41, 189–208.CrossRefGoogle Scholar
  4. Mongi A. O. (1977) The effect of relative humidity on body weights, water content and aggregation behaviour in the ticks Rhipicephalus appendiculatus and Rhipicephalus pulchellus, M. Sc. thesis. University of Nairobi.Google Scholar
  5. Punyua D. K., Newson R. M. and Mutinga M. J. (1984) Diurnal and seasonal activity of unfed adult Rhipicephalus appendiculatus (Acarina: Ixodidae) in relation to some intrinsic and extrinsic factors—I. Factors regulating activity Insect Sci. Applic. In press.Google Scholar
  6. Rechav Y. (1979) Migration and dispersal patterns of three African ticks (Acari: Ixodidae) under field conditions. J. med, Ent. 16, 150–163.CrossRefGoogle Scholar

Copyright information

© Pergamon Press LId 1984

Authors and Affiliations

  • D. K. Punyua
    • 1
  • R. M. Newson
    • 1
  • M. J. Mutinga
    • 2
  1. 1.International Centre of Insect Physiology and EcologyNairobiKenya
  2. 2.Department of ZoologyUniversity of NairobiNairobiKenya

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