André Arnosti

TL;DR: 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 in addition to preventing the maturation of oocyte V, resulting in small ones, confirming the acaricide potential of ricinoleic acid esters.

TL;DR: In this paper, the effect of eight fungicides and twelve insecticides used in lettuce and chrysanthemum crops, was evaluated on the fungi Beauveria bassiana (Bals.) Vuill, Metarhizium anisopliae (Metsch.) Sorok, Paecilomyces fumosoroseus (Wise) (Holm ex SF Gray) and Verticillium lecanii (Zimmerman) through in vitro tests.

TL;DR: It was found that esters interfered with the activity of cellular secretion by changing the glycoprotein of salivary composition especially in acini II cells, which resulted in degenerative glandular changes in ticks attached on hosts which were fed with commercial feed containing different concentrations of R. communis oil esters.

TL;DR: Testing the effect of ricinoleic acid esters from castor oil on the reproductive system of R. sanguineus females found modifications on elements of polysaccharide origin and on glycoprotein compounds, interfering in the final yolk synthesis and compromising the development of the future embryo.

TL;DR: Data regarding the inhibition of oocyte development are unprecedented and indicate the use of carvacrol as a natural product with the potential to control R. sanguineus s.l. ticks.