Folia Parasitologica, vol. 47 (2000), issue 2

Folia Parasitologica 47[2] 147-153 (2000) | DOI: 10.14411/fp.2000.029

Peculiarities of behaviour of taiga (Ixodes persulcatus) and sheep (Ixodes ricinus) ticks (Acarina: Ixodidae) determined by different methods

Andrey N. Alekseev1, Per M. Jensen2, Helen V. Dubinina1, Lioubov A. Smirnova2, Natalia A. Makrouchina2, Sergey D. Zharkov2
1 Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, 199034 St. Petersburg, Russia
2 Zoology Section, Department of Ecology, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark

A comparison of the behavioural peculiarities of Ixodes persulcatus Schulze, 1930 (north-western population, Russia) and Ixodes ricinus (L., 1758) from western Russia and Denmark was determined by using two methods. Method 1 involved a sojourn of ticks on vertical plastic sticks and showed that the questing behaviour of I. ricinus nymphs was dependent on temperature and relative humidity (RH). A significantly greater number of nymphs quested at 22°C and 100% RH than at 18°C. When the humidity was reduced to 30% all of the nymphs departed. In the second method, the activity of ticks on an inclined "ticksdrome" was estimated. The activity of I. ricinus adults from the Danish population was 1.2 times greater than that of ticks from Russia. Females of the species studied and specimens from all study areas were more active than all other stages of development. The locomotor activity of both adult and immature I. ricinus that were infected with Borrelia burgdorferi sensu lato was suppressed when compared with uninfected specimens. The locomotor activity of I. persulcatus females infected by borreliae with exoskeleton anomalies was 1.3 times greater (P<0.05) than that of infected ticks without anomalies. Our data showed that infected females with exoskeleton anomalies could crawl faster on a human and reach uncovered parts of the body that are vulnerable for attachment and feeding. A study of locomotor activity and questing behaviour may be useful for comparing the risk for different tick species and populations to transmit tick-borne pathogens.

Keywords: tick, Borrelia, locomotor activity, questing, exoskeleton anomalies

Received: March 4, 1999; Accepted: December 22, 1999; Published: June 1, 2000


References

  1. ALEKSEEV A.N. 1996: Tick pathogen interactions: behaviour of infected and uninfected ticks (Ixodidae). In: R. Mitchell, D.J. Horn, G.R. Needham and W.C. Welbourn (Eds.), Acarology IX. Vol. 1. Proceedings. Ohio, Biol. Survey, Columbus, Ohio, pp. 113-115
  2. ALEKSEEV A.N., BURENKOVA L.A., VASILYEVA I.S., DUBININA H.V., CHUNIKHIN S.P. 1996: The functioning of mixed tick-borne infection foci in Russia. Med. Parazitol. Parazit. Bolezni 4: 9-16. (In Russian.)
  3. ALEKSEEV A.N., DUBININA H.V. 1993: Abnormalities in Ixodes ticks (Ixodoidea, Ixodinae). Acarina. Russian J. Acarol. (Moscow) 1: 73-85
  4. ALEKSEEV A.N., DUBININA H.V. 1994: Symbiotical relationships in the complicated vector-pathogen system. Dokl. Akad. Nauk 338: 259-261. (In Russian.) Go to PubMed...
  5. ALEKSEEV A.N., DUBININA H.V. 1996a: Some aspects of mite (Oppiidae) and tick (Ixodidae) pathology as a result of anthropogenic pressure. In: R. Mitchell, D.J. Horn, G.R. Needham and W.C. Welbourn (Eds.), Acarology IX. Vol. 1. Proceedings. Ohio, Biol. Survey, Columbus, Ohio, pp. 117-120
  6. ALEKSEEV A.N., DUBININA H.V. 1996b: Exchange of Borrelia burgdorferi between Ixodes persulcatus (Ixodidae: Acarina) sexual partners. J. Med. Entomol. 33: 351-354 Go to original source... Go to PubMed...
  7. ALEKSEEV A.N., DUBININA H.V. 1997: Monitoring of the system "mites-microorganisms" as biotic components due to variation in the anthropogenic pressure. In: V.E. Sokolov, Yu.S. Reshetnikov and M.I. Shatunovsky (Eds.), Monitoring of Biological Diversity. Russian Academy of Sciences, Moscow, pp. 195-201. (In Russian.)
  8. ALEKSEEV A.N., DUBININA H.V., ANTYKOVA L.P., DZHIVANYAN T.I., RIJPKEMA S.G.T., VERBEEK-DE KRUIF N., CINCO M. 1998: Tick-borne borreliosis pathogen identification in Ixodes ticks (Acarina, Ixodidae) collected in St. Petersburg and Kaliningrad Baltic Regions of Russia. J. Med. Entomol. 35: 136-142 Go to original source... Go to PubMed...
  9. ARTHUR D.R. 1962: Ticks and Tick Disease. Int. series of monographs on pure and appl. biol. Vol. 9. Pergamon Press, Oxford, 413 pp
  10. BABENKO L.V. 1985: Seasonal activity and duration of active life. In: N.A. Filippova (Ed.), Taiga Tick Ixodes persulcatus Schulze (Acarina, Ixodidae). Morphology, Systematics, Ecology, Medical Importance. Izdatelstvo "Nauka", Leningrad, pp. 219-232
  11. BABENKO L.V., ARUMOVA E.A., LEONOVICH S.A. 1985: Behaviour of unfed individuals. In: N.A. Filippova (Ed.), Taiga Tick Ixodes persulcatus Schulze (Acarina, Ixodidae). Morphology, Systematics, Ecology, Medical Importance. Izdatelstvo "Nauka", Leningrad, pp. 238-245
  12. BROWNING T.O. 1976: The aggregation of questing ticks, Rhipicephalus pulchellus, on glass stems, with observations on R. appendiculatus. Physiol. Entomol. 1: 107-114 Go to original source...
  13. FILIPPOVA N.A. 1977: Ixodid Ticks. Subfamily Ixodinae. Fauna of the USSR. Arachnida. Vol. 4, No. 4. Izdatelstvo "Nauka", Leningrad, 396 pp. (In Russian.)
  14. JENSEN P.M. 1998: Seasonal and geographical variations in the abundance of Ixodes ricinus and Lyme borreliosis transmission in Denmark. PhD Dissertation. The Royal Veterinary and Agricultural University, Copenhagen, 208 pp
  15. KOVALEVSKII Y.V., KORENBERG E.I. 1995: Differences in Borrelia infections in adult Ixodes persulcatus and Ixodes ricinus ticks (Acari: Ixodidae) in populations of north-western Russia. Exp. Appl. Acarol. 19: 19-29. Go to original source... Go to PubMed...
  16. LEES A.D., MILNE A. 1951: The seasonal and diurnal activities of individual sheep ticks (Ixodes ricinus L.). Parasitology 41: 189-208 Go to original source... Go to PubMed...
  17. LEFCORT H., DURDEN L.A. 1996: The effect of infection with Lyme disease spirochetes (Borrelia burgdorferi) on the phototaxis, activity, and questing height of the tick vector Ixodes scapularis. Parasitology 113: 97-103 Go to original source... Go to PubMed...
  18. McLEOD J. 1935: Ixodes ricinus in relation to its physical environment. I. The influence of climate on development. Parasitology 25: 123-144 Go to original source...
  19. OKULOVA N.M. 1978: The vertical and horizontal movement of Ixodidae ticks in the forest in depending from the temperature and air humidity. Ecologiya 2: 4448. (In Russian.)
  20. WILKINSON L. 1990: SYSTAT: The System for Statistics. SYSTAT, Evanson, IL., 255 pp