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Title: Effects of ricinoleic acid esters from castor oil of Ricinus communis on the vitellogenesis of Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) ticks. Author: Arnosti A, Brienza PD, Furquim KC, Chierice GO, Bechara GH, Calligaris IB, Camargo-Mathias MI. Journal: Exp Parasitol; 2011 Feb; 127(2):575-80. PubMed ID: 21070770. Abstract: This study examines the effects of ricinoleic acid esters from Ricinus communis castor oil on the vitellogenesis of Rhipicephalus sanguineus ticks attached to hosts that were fed with commercial rabbit food containing these esters. The oocytes of ticks from the treatment group (TG) showed cytoplasmic changes that inhibited the development of oocytes I and II to the advanced stages (IV and V) in addition to preventing the maturation of oocytes V, resulting in small ones. In addition, sperm was not observed in ampoules. Our findings confirm the acaricide potential of ricinoleic acid esters.[Abstract] [Full Text] [Related] [New Search]