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Effects of ricinoleic acid esters from castor oil of Ricinus communis on the vitellogenesis of Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) ticks |
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| Authors: | Arnosti André Brienza Paula Desjardins Furquim Karim Christina Scopinho Chierice Gilberto Orivaldo Bechara Gervásio Henrique Calligaris Izabela Braggião Camargo-Mathias Maria Izabel |
| Institution: | aDepartamento de Biologia, Instituto de Biociências, UNESP, Av. 24 A, n° 1515, Cx. Postal 199, CEP: 13506-900 Rio Claro, SP, Brazil;bDepartamento de Química e Física Molecular, Instituto de Química de São Carlos, USP, Av. Trabalhador São Carlense, 400 PQ, Arnoldschmidt, CEP: 13566-590 São Carlos, SP, Brazil;cDepartamento de Patologia Veterinária, FCAV, UNESP, Via de Acesso Prof. Paulo Castellane, s/n, CEP: 14884-900 Jaboticabal, SP, Brazil |
| 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. |
| Keywords: | Rhipicephalus sanguineus Vitellogenesis Ricinoleic acid esters Tick Ricinus communis Oocytes |
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