Larvicidal potential of Sapindus saponaria to control the cattle tick Boophilus microplus

Abstract

The objective of this study was to evaluate the larvicidal potential of a crude ethanol extract (CEE) of soapberry Sapindus saponaria stem peel on the cattle tick Boophilus microplus. Tick larvae obtained by incubating engorged females, collected from naturally infested cattle, were placed in envelopes of filter paper impregnated with different concentrations of CEE in the test group, and distilled water in the control group. Four repetitions were made with each solution (n>120). Mortality was observed after 48 hours. Lethal concentration values of 1,258 ppm (LC50) and 6,360 ppm (LC99) were obtained.

Toxicity of extract of Magonia pubescens (Sapindales: Sapindaceae) St. Hil. to Control the Brown Dog tick, Rhipicephalus sanguineus (Latreille) (Acari: Ixodidae)

“…The fl owers are used by the bees, although they lead to a slightly toxic honey; seeds are also used in ornamental arrangements and in the soap production (Pott & Pott 1994). The crude ethanol extract of another member of the same family, the tingui Sapindus saponaria L., has also shown activity against larvae of the cattle tick, Rhipicephalus (Boophilus) microplus (Canestrini) (Fernandes et al 2005). These observations provided the incentive to carry out the present study.…”

“…Larvae were exposed to the solutions in fi lter papers envelopes ( 327 cm 2 ), containing micropores to ensure adequate circulation of air. Each envelope received 2 ml of the solution, distributed uniformly with a pipette on its internal surfaces (Fernandes et al 2005). The control group was subdivided in three types of treatment, conditioning the larvae in: 1 -envelopes of dry fi lter paper; 2 -fi lter paper humidifi ed with distilled water; and 3 -fi lter paper humidifi ed with a solution of DMSO and distilled water, in the same proportion used in the test group.…”

“…In Brazil, acaricide resistance in R. sanguineus to some pirethroids was fi rst recorded by Fernandes (2000), in Goiânia, State of Goiás. Based on encouraging results of experiments with some plant species (Fernandes et al 2005, active principles of plants with acaricidal properties could be used as an alternative with lower environmental impact to control ticks. (Fig.…”

Diversity of foliar endophytic fungi from the medicinal plant Sapindus saponaria L . and their localization by scanning electron microscopy

“…Fruit extracts present antifungical (Tsuzuki et al, 2007), larvicidal (Silva et al, 2004;Fernandes et al, 2005;Barreto et al, 2006), and bleeding neutralizer activities (Castro et al, 1999).…”

Larvicidal potencial of Sapindus saponaria (Sapindaceae) against Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae)

“…According to Pott & Pott (1994) the triturated fruit serves as a soap while the seed is employed for producing oil for soap manufacture and is widely used as an insecticide (Guarin Neto et al, 2000). The CEE of S. saponaria also presents promising larvicidal activity against the cattle tick Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) (Fernandes et al, 2005b) while that of Magonia pubescens St. Hil, which belongs to the same family as S. saponaria is effective against both the mosquito Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae) and R. sanguineus (Fernandes et al, 2005a). These factors influenced the choice of this plant for the present study.…”