Extratos de plantas no controle de Rhipicephalus (Boophilus) microplus (Canestrini, 1887) (Acari: Ixodidae) em laboratório

Abstract

ResumoExtratos vegetais foram estudados com o objetivo de avaliar suas eficiências no controle de Rhipicephalus (Boophilus) microplus (Canestrini, 1887) AbstractPlant extracts were studied to evaluate its efficiency in the control of Rhipicephalus (Boophilus) microplus (Canestrini, 1887) in laboratory. Engorged female ticks were collected from the cattle, kept in Petri dishes. Organic alcoholic extracts 2% (weight/volume) were used: seeds of Annona muricata L. (Annonaceae) (soursop); flowers of Syzygium malaccensis (L.) (Myrtaceae) (iamb), leaves of Cymbopogon citratus (DC.) Stapf (Poaceae) (holy grass), leaves of Azadirachta indica A. Juss (Meliaceae) (neem) and hexane extract 2% (weight/volume) of A. indica (seeds). The control groups consisted of untreated females and females treated with distilled water and sterile and dimethylsulfoxide (DMSO) a concentration of 1%. The extract of A. muricata (seed) had the highest mortality with acaricide activity and 100% efficacy followed by extracts of S. malaccensis (75 and 59.24%) and A. indica (65 and 38.49%). The seed extract of A. muricata reduced 100% larvae hatch.

Perspectives for the use of plant extracts to control the cattle tick Rhipicephalus (Boophilus) microplus

“…On the other hand, Costa et al (2008) observed that this plant had low efficacy (17%) against females using a hydroalcoholic extract from leaves at a concentration of 20%. Alcoholic leaf extract of Cymbopogon citratus at a concentration of 2% had efficacy of 18.35% against engorged females (BROGLIO-MICHELETTI et al, 2009) The essential oils of Eucalyptus citriodora and Eucalyptus staigeriana Myrtaceae killed 100% of the larvae at a concentration of 10%, while Eucalyptus globulus had the same efficacy but at twice the concentration. Against engorged females, the maximum efficacy was observed at a concentration of 25% for E. citriodora, 10% for E. globulus and 15% for E. staigeriana.…”

“…The hydroalcoholic extract of leaves of Eucalyptus sp had efficacy of 96% against engorged females at a concentration of 10% (COSTA et al, 2008). From the same family, Broglio-Micheletti et al (2009) tested the alcoholic extract of flowers of Syzygium malaccensis at a concentration of 2% and observed that the rate of interference with the engorged females reproduction was 59%.…”

“…In two studies conducted by Broglio-Micheletti et al (2009, extracts and commercial products based on A. indica were tested. Hexanic extracts from seeds and ethanolic extracts from leaves at a concentration of 2% had efficacy of 38.4 and 2.3%, respectively, on females reproduction (BROGLIO-MICHELETTI et al, 2009).…”

“…In two studies conducted by Broglio-Micheletti et al (2009, extracts and commercial products based on A. indica were tested. Hexanic extracts from seeds and ethanolic extracts from leaves at a concentration of 2% had efficacy of 38.4 and 2.3%, respectively, on females reproduction (BROGLIO-MICHELETTI et al, 2009). The efficiency of commercial formulations of hexanic and alcoholic extracts from seeds at a concentration of 2% has been found to range from 17 to 73%, with higher efficiency from hexanic extracts (BROGLIO-MICHELETTI et al, 2010).…”

Acaricides efficiency on Rhipicephalus(Boophilus) microplus from Bahia state North-Central region

“…microplus (SRIVASTAVA et al, 2008;MAGADUM et al, 2009). The biochemical effects of this extract over the cattle tick remains unclear, but Habluetzel et al (2007) found that the extract produced a reduction in the survival of the larvae and adults and also interfered with oviposition and oogenesis, behavior, dietary process, and growth of arthropods (SCHMUTTERER, 1990;MORDUE;NISBET, 2000;BROGLIO-MICHELETTI et al, 2009.…”