Effect of Stemona spp. against Rhipicephalus microplus

Abstract

Stemona plants have been traditionally used against various insects in Thailand and Southeast Asian countries. The acaricidal efficacy of 9 species of Stemona grown in Thailand was evaluated against dairy cattle tick, Rhipicephalus microplus using adult immersion test and in vivo evaluation on infested calves. From the ten Stemona root extracts used in this study, S. collinsiae of a concentration 250 mg/ml possessed the highest activity. In vivo study revealed that S. collinsiae extract could significantly reduce the attached ticks on calf skin compared to the control and promoted not significantly different efficacy from flumethrin, a common pyrethroid used in dairy farms. No side effect was found on calves during the experiment. The results confirmed traditional use of S. collinsiae as a better source of insecticide than other species and could be used as guidance for further development of S. collinsiae as a herbal acaricide.

Investigation of the acaricidal activity of the acetone and ethanol extracts of 12 South African plants against the adult ticks of <i>Rhipicephalus turanicus</i>

“…From the results of the efficacy testing against R. turanicus , it is evident that 8 of the 12 plants had some acaricidal activity ( Table 2 ) at a 20% (w/v) concentration. Other workers have also evaluated the acaricidal effects of plants at that concentration (Cetin et al 2009 ; Godara et al 2014 ; Vendramini et al 2012 ; Zorloni et al 2010 ) while others have used higher concentrations such as 250 mg/mL and higher (Coskun et al 2008 ; Domingos et al 2013 ; Kongkiatpaiboon et al 2014 ). The concentrations used in tests should, however, not exceed realistic levels in field trials (Schmeda-Hirschmann & De Arias 1992 ).…”

Search for Snail Repellents: Antimollusc Activities from Stemona parviflora and Six Other Chinese Stemona Species

“…By 2021, at least 184 Stemona alkaloids have been discovered, and most were extracted from roots . They were broadly investigated for their pharmacological and toxicological effects, and tested animals included insects (Bombyx mori and Spodoptera littoralis), , ticks (Rhipicephalus microplus), nematodes (Panagrellus redivivus), mice, , etc. Despite these studies, little is known about how these phytochemicals affect the natural enemies of Stemona and what the potential of alkaloids presented in leaves is.…”

Furfural Derivatives and Phenolic Constituents in Stemona tuberosa Lour

“…In addition to its antitussive, [2] anti-inflammatory, [3] and antibacterial effects, [4,5] it can also be used as a natural and harmless pesticide to kill pests. [6,7] Phytochemical studies have reported more than 280 constituents from Stemona plants, mainly alkaloids, stilbenoids, and phenolic acids.…”

“…In our continuous exploitation of the diverse water-soluble constituents of traditional Chinese medicine, phytochemical investigation on the water decoction of S. tuberosa Lour. Led to the isolation of twenty-six constituents included two furfural derivatives (1 and 2), five alkaloids (3)(4)(5)(6)(7), two stilbenes (8 and 9), two flavonoids (10 and 11), one anthraquinone (12), six phenylpropanoids (13)(14)(15)(16)(17)(18), and eight phenolic acids (19)(20)(21)(22)(23)(24)(25)(26). Herein, the isolation and structural identification of these constituents were reported.…”

“…Miq., and S. japonica (Blume) Miq., have been frequently prescribed as ′ Stemonae Radix ′ in traditional Chinese medicine for thousands of years. In addition to its antitussive, [2] anti‐inflammatory, [3] and antibacterial effects, [4,5] it can also be used as a natural and harmless pesticide to kill pests [6,7] . Phytochemical studies have reported more than 280 constituents from Stemona plants, mainly alkaloids, stilbenoids, and phenolic acids.…”