Onset of vitellogenin production and vitellogenesis, and their relationship to changes in the midgut epithelium and oocytes in the tick Dermacentor variabilis

Experimental & Applied Acarology
L B CoonsB Tarnowski

Abstract

In Dermacentor variabilis (Say), the onset of vitellogenin production and vitellogenesis (uptake of vitellogenin into oocytes) began during the rapid-engorgement feeding period. Mating was required for both vitellogenin production and vitellogenesis to complete the tick's life cycle. Complete immunological identity, as measured by Ouchterlony's double diffusion test, existed between vitellogenin from the fat body, midgut and hemolymph, and vitellin from the ovaries and eggs. Antivitellin antibody did not react with host hemoglobin nor with fat body, midgut, and ovary extracts from feeding females prior to rapid engorgement, feeding unmated females, or unfed or fed males. Some unmated females fed for 13 days and then hand-detached from the host eventually began oviposition after going through a preoviposition period. In these ticks, organ extracts from the midgut, fat body and ovary reacted with antivitellin antibody. The presence or absence of presumed vitellogenic cells in the midgut and yolk bodies in oocytes corresponded with the presence or absence of vitellogenin and vitellogenesis as measured by Ouchterlony's test. Presumed vitellogenic cells increased in size during the preoviposition period. These cells reached their gr...Continue Reading

References

Jan 1, 1977·Journal of Immunological Methods·A J Crowle, L J Cline
May 1, 1989·Experimental & Applied Acarology·B I Tarnowski, L B Coons

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Citations

May 1, 1989·Experimental & Applied Acarology·B I Tarnowski, L B Coons
Jan 1, 1990·Experimental & Applied Acarology·L B CoonsL Starr-Spires
Jul 1, 1994·International Journal for Parasitology·L B CoonsW J Lamoreaux
Jul 1, 1994·International Journal for Parasitology·W J LamoreauxL B Coons
Dec 26, 2001·Veterinary Parasitology·R L TellamP Willadsen
Aug 12, 2014·Ticks and Tick-borne Diseases·Alexander D Smith, W Reuben Kaufman
Feb 1, 1994·International Journal for Parasitology·J R SauerR C Essenberg
Dec 2, 2008·Experimental Parasitology·Sandra Eloisi DenardiMaria Izabel Camargo-Mathias
Jan 11, 2020·Experimental & Applied Acarology·Minjing WangHui Wang
Dec 20, 2005·Insect Biochemistry and Molecular Biology·Damdinsuren BoldbaatarKozo Fujisaki

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