Acaricidal activity of cashew nut shell liquid associated with essential oils from Cordia verbenacea and Psidium guajava on Rhipicephalus microplus

Abstract

The aim of this study was to assess the effectiveness of cashew nut shell liquid (CNSL), Cordia verbenacea and Psidium guajava, both alone and in association against Rhipicephalus microplus. Larval packet and adult immersion tests were conducted in concentrations ranging from 3.1 at 100.0mg mL −1. CNSL was effective against engorged females (99.6%) at 100.0mg mL −1 and against larvae (99.2 %) at 50.0mg mL −1. The highest efficacy on engorged females was achieved by the essential oils of P. guajava at 12.5mg mL −1 (99.9%), followed by those of C. verbenacea at 25.0mg mL −1 (96.9%), while a low larvicidal activity of 5.8 and 59.0% was, respectively, obtained. The association at 50.0mg mL −1 had asignificant effect on both life stages of R. microplus. This association caused considerable larval mortality (95.3%) and high efficacy on engorged females (93.9%).

Efficacy of synergistic activity of seed oils from Carthamus tinctorius (Safflower) and Nasturtium officinale (Watercress) on lethality of the cattle tick Hyalomma scupense (Acari: Ixodidae)

“…Plant mixtures have been shown to have synergistic effects on numerous species, such as bacteria ( Didry et al ., 1994 ), fungus ( Mugnaini et al ., 2012 ), gastro-intestinal parasites ( Ntalli et al ., 2011 ), and insects ( Ntalli et al ., 2011 ). Furthermore, the associations are viable for controlling bovine ticks ( Vinturelle et al ., 2017 ; De Carvalho Castro et al ., 2019 ; Shezryna et al ., 2020 ). Overall, researchers found that mixing volatile oils showed good action on R .…”

Essential oils from Carapebus sandbank plants as natural controllers against insect pests of importance in Brazilian public health and agriculture

“…αpinene (49. 0 %) and β-caryophyllene (12.4 %) were the major compounds of the oil (Carvalho-Castro et al, 2019). Ocotea notata was another plant with activity against this pest.…”

Pharmacognostical, biochemical activities and zootechnical applications of Psidium guajava (Myrtaceae), plant with high medicinal value in tropical and subtropical parts of the World: A review

“…Nepal [14] Leave (E)-nerolidol (E)-caryophyllene Egypt [15] Leave Limonène Hydrocarbons Monoterpenes Oxygenated Monoterpenes Parkistan [26] Leave α-phellandrene eucalyptol α-terpineol spathulenol caryophyllene dihydrocarveol acetate nerolidol caryophyllene oxide oxygenated monoterpene sesquiterpene hydrocarbons oxygenated sesquiterpene monoterpene hydrocarbons the majority compounds depend on the variety of the tree Oman [27] Leave iso-caryophyllene veridiflorence farnesene Pakistan [16] Leave β-caryophyllene Sesquiterpene hydrocarbon Nakhon [28] Leave Limonene α-Pinene Alexandria [29] Leave α-pinene (E)-caryophyllene (E)-nerolidol FazendaTabuleiros II [30] Leave β-caryophyllene India [31] Leave α-terpinyl acetate trans-caryophyllene nerolidol Brazil [32] Leave α -Humulene β-caryophyllene β -Selinene α -Selinen…”