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A Cold Receptor on the Tick, Rhipicephalus Appendiculatus: Electrophysiological and Ultrastructural Observations

  • S. M. Waladde
  • E. D. Kokwaro
  • M. Chimtawi
Article

Abstract

A sensillum trichodeum on tarsus I of Rhipicephalus appendiculatus displays a tonic impulse frequency at constant temperature but shows a phasic-tonic increased activity when temperature is lowered. Rising temperature has an inhibitory effect. Ultrastructural details show that it bears resemblance to a double-walled sensillum with spoke canals, and has dendrites of seven receptor cells. One of the cells responds to temperature changes. The function of the others is unknown.

Key Words

Tick sensilla Rhipicephalus appendiculatus thermoreception cold receptor 

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References

  1. Altner H. (1977) Insect sensillum specificity and structure: An approach to a new topology. In: Olfaction and Taste VI (Eds. by Le Magnen J. and Macleod P.), pp. 295–304. Falconberg Court, London.Google Scholar
  2. Altner H., Sass H. and Altner I. (1977) Relationship between structure and function of antennal chemo-, hygro-, and thermoreceptive sensilla in Periplanata amer-icana. Cell Tissue Res. 176, 389–405.CrossRefGoogle Scholar
  3. Altner H., Tichy H. and Altner I. (1978) Lamellated outer dendritic segments of a sensory cell within a pore-less thermo- and hygroreceptic sensillum of the insect Carausius morosus. Cell Tissue Res. 19, 287–304.Google Scholar
  4. Boo K. S. and Mciver S. B. (1975) Fine structure of sunken thick-walled pegs (sensilla ampullacea and coeloco-nica) on the antennae of mosquitoes. Can. J. Zool. 53, 262–266.CrossRefGoogle Scholar
  5. Chu-Wang I. W. and Axtell R. C. (1973) Comparative fine structure of the claw sensilla of a soft tick Argas (Persicargas) arboreus Kaiser, Hoogstraal, and Kohls and a hard tick, Amblyomma americanum (L.). J. Parasit. 59, 545–555.CrossRefGoogle Scholar
  6. Davis E. E. and Sokolove Ph.G. (1975) Temperature responses of antennal receptors of the mosquito Aedes aegypti. J. Comp. Physiol. 96, 223–236.CrossRefGoogle Scholar
  7. Ernst K. E. (1969) Die Feinstruktur von Reichensillen auf der Antenne des Askäfers Necrophorus (Coleoptera) Z. Zellforsch. mikrosk. Anat. 94, 72–102.CrossRefGoogle Scholar
  8. Ismail I. A. H. (1964) Comparative study of sense organs in the antennae of culicine and anopheline female mosquito. Acta Trop. 21, 155–168.PubMedGoogle Scholar
  9. Lacher V. (1964) Electrophysiologische Üntersuchungen an enzelnene Rezeptoren für Geruch Kohlendioxyd, Luftfeuchtigkeit und Temperatur auf de Antennen der Arbeitsbiene und der Frohne (Apis Melligica L) Z. vergl. Physiol. 49, 578–623.Google Scholar
  10. Lees A. D. (1948) The sensory physiology of the sheep tick Ixodes ricinus L. J. exp. Biol. 25, 145–207.Google Scholar
  11. Loftus R. (1968) The response of the antennal cold receptor of Periplaneta americana to rapid temperature changes and to steady temperature. Z. vergl. Physiol. 59, 413–455.CrossRefGoogle Scholar
  12. Loftus R. (1976) Temperature-dependent dry receptor on antenna of Periplaneta. Tonic responses. J. comp. Physiol. 111, 153–170.CrossRefGoogle Scholar
  13. Schoonhoven L. M. (1967) Some cold receptors in the larvae of three Lepidoptera species. J. Insect Phvsiol. 13, 821–826.CrossRefGoogle Scholar
  14. Steinbrecht R. A. and Muller B. (1976) Fine structure of the antennal receptors of the bed bug Cimex lectularius L. Tissue Cell 8, 615–635.CrossRefGoogle Scholar
  15. Thurm U. (1964) Mechanoreceptors in the cuticle of the honey bee: fine structure and stimulus mechanism. Science, N.Y. 145, 1063–1065.CrossRefGoogle Scholar
  16. Waladde S. M. (1977) The sensory nervous system of the adult cattle tick: Boophilus microplus (Canestrini) Ixodi-dae. Part II. Scanning electron microscopy. J. Aust. ent. Soc. 16, 73–79.CrossRefGoogle Scholar
  17. Waladde S. M. (1978) A study of the structure and physiology of certain receptors of the adult cattle tick Boophilus microplus (Canestrini) Ixodidae. Ph.D. Thesis, University of Queensland Australia.Google Scholar
  18. Waldow U. (1970) Elekrophysiogische Unterschungen an Feuchte-, Trocken- und Kälte-Rezeptoren auf den Aten-nen der Wanderheuschrecke Locusta. Z. vergl. Physiol. 69, 249–283.CrossRefGoogle Scholar

Copyright information

© ICIPE 1981

Authors and Affiliations

  • S. M. Waladde
    • 1
  • E. D. Kokwaro
    • 1
  • M. Chimtawi
    • 1
  1. 1.International Centre of Insect Physiology and EcologyNairobiKenya

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