English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In Brazil, two tick species are mainly involved in public health and livestock issues:  Amblyomma sculptum  and  Rhipicephalus microplus , respectively. Nootkatone, a sesquiterpenoid isolated from  Chamaecyparis nootkatensis , has been described in the literature as an environmentally friendly alternative method of control, with repellent and toxic action against different insect and tick species from the Northern Hemisphere. The objective of the present study was to evaluate the effect of nootkatone on the  in vitro  mortality of  R. microplus  and  A. sculptum . Different dilutions of nootkatone (0.5, 1, 2, 5 and 10%) were used on instars of both tick species. In  A. sculptum  engorged larvae, unfed nymphs, and unfed adults, 2% nootkatone resulted in 95% mortality in almost all tests. An  in vitro  mortality rate of 95% was observed for larvae and engorged females of  R. microplus  with 1% and 0.5% nootkatone, respectively. Additionally, 5% and 10% nootkatone were at least 97% effective against engorged larvae, unfed nymphs, and unfed adults of  A. sculptum  and larvae and engorged females of  R. microplus . This was the first study to use nootkatone against ticks from Brazil and the data suggest that nootkatone has great potential as a tool for tick control.

Effect of nootkatone on the in vitro mortality of the ticks Rhipicephalus microplus and Amblyomma sculptum (Acari: Ixodidae)