By Yasuo Chinzei, DeMar Taylor (auth.), Kerry F. Harris (eds.)
Volume 10 of Advances in ailment Vector learn involves seven chapters on vectors that impact human or animal well-being and 6 chapters on plant pathogens and their vectors. In bankruptcy 1, Yasuo Chinzei and DeMar Taylor speak about hormonal law of vitellogenesis in ticks. Many blood sucking bugs and ticks transmit pathogens by way of engorgement, which induces vitellogenesis and oviposition in grownup animals. to enquire the pathogen transmission mechanism in vector animals, details at the host physiological and endocrinological stipulations after engorgement comes in handy and significant simply because pathogen improvement or proliferation happens within the vector hosts whilst the host copy. Chinzei and Taylor have proven that during ticks, juvenile hormone (JH) isn't really all in favour of the endocrinological techniques inducing vitellogenin biosynthesis. Synganglion (tick mind) factor(s) (vitellogenesis inducing issue, VIF) is extra vital to begin vitellogenesis after engorgement, and ecdysteroids also are relating to induction of vitellogenin synthesis. of their bankruptcy, dependent customarily on their lonesome experimental information, the authors talk about the characterization of major yolk protein, vitellogenin (Vg) , biosynthesis and processing within the fats physique, and hormonal rules of Vg synthesis in tick structures, together with ixodid and argasid ticks.
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Additional resources for Advances in Disease Vector Research
Expression of the genes coding for vitellogenin (yolk protein). Annu. Rev. Entomol. 31:507-531. 9. Y. 1976. Purification and characterization of two lipovitellins from eggs of the tick, Dermacentor andersoni. Insect Biochem. 6:233-240. 10. C. 1959. Studies on "haemixodovin", the pigment in the eggs of the cattle tick, Boophilus microplus (Acarina: Ixodidae). Aust. J. Bio!. Sci. 12:263-273. 11. , and Takahashi K. 1976. Isolation and characterization of insect vitellogenin. Its identity with haemolymph lipoprotein II.
11m) Mean size of mature zygote (~lm) Mean time postrepletion to moult of ticks (days) 'Earliest transformation of zygote to kinete (days) Mean size of kinete (11m) First detection of kinete in hemolymph (days) First penetration of salivary glands by kinete (days) T. annulata 3 Hyalomma anatolicum (Nymph-adult) T. mutans4 Amblyomma variegatum (Nymph-adult) Species of Theileria and vector" T. parva 2 Rhipicephalus appendiculatus (N ymph - adult) T. 4. A comparison of some characteristics of the development of Theileria species in ticks maintained at 28°C.
Alan S. O. Box 30709, Nairobi, Kenya. © 1994 Springer-Verlag New York, Inc. Advances in,Disease Vector Research, Volume 10. K. S. Young by chemotherapy (92). The transformation of lymphocytes and their destruction during merogony of the schizont and by cytolytic T lymphocytes is responsible for the pathogenic effects of several species (87) while merogony in the erythrocytes is responsible, among other effects, for the development of anemia in other Theileria species (87). Several tick genera have been identified as field vectors together with additional experimental vectors for Theileria species of cattle and domestic animals (81, 87, 114, 115, 117).