Acaricidal potential of volatile oils from Croton species on Rhipicephalus microplus

New sources of botanical acaricides from species of Croton with potential use in the integrated management of Tetranychus urticae

“…The C. grewioides oils were rich in phenylpropanoids, whereas sesquiterpenes were the predominant chemical class in the C. heliotropiifolius, C. adenocalyx and C. blanchetianus oils. These results are in agreement with data reported for other species of the genus (Dória et al, 2010;Filho et al, 2017;Castro et al, 2019).…”

“…The chemical profile found in the present study for the leaf and stem oils from C. grewioides, with (E)-anethole as the major constituent, is in agreement with data reported by Silva et al (2008) for the same species collected in the state of Pernambuco. On the other hand, Castro et al (2019) investigated two samples collected in the state of Piauí and found the phenylpropanoid methyl chavicol as the major constituent (83.59% in São João do Piaui and 95.38% in Caxingó), which is the isomer of (E)-anethole.…”

“…With the exception of the C. grewioides oil, which was evaluated for its effect on the cattle tick Rhipicephalus microplus (Castro et al, 2019), previous investigations of the biological properties of Croton oils were limited to insecticidal action against Nasutitermes corniger (C. blanchetianus), an important structural pest in the Neotropics (Lima et al, 2013), larvae of the mosquito Aedes aegypti, which is the main transmitter of dengue, zika and chikungunya (C. heliotropifolius and C. blanchetianus) (Morais et al, 2006;Doria et al, 2010), and the storage grain pest Zabrotes subfasciatus (C. grewioides) (Silva et al, 2008).…”

“…Among the 350 species of Croton recorded for Brazil (Van Ee et al, 2011), 35 are found in Pernambuco, where some are considered endemic (Silva et al, 2010). Plants of this genus are sources of bioactive compounds with a variety of biological properties, including insecticidal (Cruz et al, 2017;Silva et al, 2018) and acaricidal (da Camara et al, 2017;Castro et al, 2019) activity, which are attributed to secondary metabolites pertaining to the diterpene, alkaloid and terpene classes, the latter of which are found in essential oils.…”

Óleos Essenciais com Atividade Acaricida para Controle de Rhipicephalus (Boophilus) microplus no Brasil

“…Diversos OEs das espécies exibidas neste estudo mostraram eficácia significativamente maior, quando em comparação com outros OEs testados, demonstrando 100% de letalidade contra R. microplus em um ou mais dos ensaios realizados (Tabela 1). São elas: Drimys brasiliensis (RIBEIRO et al, 2008), Tetradenia riparia (GAZIM et al, 2011), Lippia sidoides (GOMES et al, 2012), Tagetes minuta (GARCIA et al, 2012), Lippia triplinervis (LAGE et al, 2013), Syzygium aromaticum (MELLO et al, 2014), Zanthoxylum caribaeum (NOGUEIRA et al, 2014), Chrysopogon zizanioides (CAMPOS et al, 2015), Curcuma longa (CHAGAS et al, 2016), Zingiber officinale (CHAGAS et al, 2016), Lippia alba, L. gracilis, L. origanoides (CHAGAS et al, 2016), Cymbopogon martinii (PAZINATO et al, 2016), Cedrus atlântica (PAZINATO et al, 2016), C. citratus (PAZINATO et al, 2016;SILVA et al, 2020), Cuminum cyminum (VILLARREAL et al, 2017), Hesperozygis myrtoides (CASTILHO et al, 2017), Citrus limonum (VINTURELLE et al, 2017), Mesosphaerum suaveolens (CASTRO et al, 2018), Alpinia zerumbet (CASTRO et al, 2018), Croton conduplicatus, C. pulegiodoruse C. grewioides (CASTRO et al, 2019). Dos OEs utilizados, os três principais componentes majoritários identificados em maior concentração na análise quantitativa foram metil chavicol (95,38% e 83,59% em C. grewioides), sesquirosefurano (92,2% em C. grewioides) e geraniol (81,4% em C. martinii), nos respectivos estudos de Castro et al (2019), Figueiredo et al (2017) e Chagas et al (2012).…”