Effects of Ricinus communis oil esters on salivary glands of Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae).
This study showed the interference of esters extracted from Ricinus communis in the secretory cycle of salivary glands of Rhipicephalus sanguineus ticks, which consequently caused collateral effects on their feeding process. Ticks attached on hosts which were fed with commercial feed containing different concentrations of R. communis oil esters suffered damages such as cytoplasmic changes in their salivary glands, notably in the acinar cells, impairing the functioning of the acini and accelerating the organs degeneration as a whole. It was found that esters interfered with the activity of cellular secretion by changing the glycoprotein of salivary composition especially in acini II cells. It was also shown that the damages caused by esters in the salivary glands cells of these ectoparasites increased in higher concentrations of the product and degenerative glandular changes were more pronounced.
Departamento de Biologia, Instituto de Biociências, UNESP, Av 24 A, n° 1515, Cx. Postal 199, CEP 13506-900 Rio Claro, SP, Brazil.
André
A
Arnosti
Paula Desjardins
PD
Brienza
Karim Christina Scopinho
KC
Furquim
Gilberto Orivaldo
GO
Chierice
Salvador Claro
SC
Neto
Gervásio Henrique
GH
Bechara
Bruno Rodrigues
BR
Sampieri
Maria Izabel
MI
Camargo-Mathias
D000821:Animal Feed; D000818:Animals; D004952:Esters; D005247:Feeding Behavior / Q000187:drug effects; D005260:Female; D011817:Rabbits; D048508:Rhipicephalus sanguineus / Q000187:drug effects* / Q000502:physiology; D012277:Ricinoleic Acids / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology*; D012278:Ricinus / Q000737:chemistry*; D012469:Salivary Glands / Q000166:cytology / Q000187:drug effects / Q000378:metabolism
D004952:Esters; D012277:Ricinoleic Acids; C030521:ricinoleic acid