Ixodicide activity of Eysenhardtia polystachya against Rhipicephalus (Boophilus) microplus1

Abstract

The objective of this study was to evaluate the acaricidal effect of 2 compounds extracted from Eysenhardtia polystachya in vitro, namely coatlines and matlalines. Each extract was obtained by aqueous extraction in a nitrogen atmosphere. Engorged adult females of an amitraz-resistant strain of Rhipicephalus (Boophilus) microplus were used to produce larvae and to carry out the adult immersion test (AIT), while larvae were assayed using the larval packet test (LPT). After exposure to coatlines or matlalines, the mortality of larvae and engorged females, as well as the reproductive parameters of adult ticks were assessed. Coatlines were not lethal against larvae and did not decrease reproductive parameters. Conversely, matlalines showed a 90 to 100% efficacy against adults and larvae at all concentrations tested and a reduction of 76.41 to 80.64% oviposition and a 48.02 to 54.86% reduction in egg hatchability. Therefore, the acaricidal activity of matlalines was more efficient. Further studies are required to elucidate both the mode of action of matlalines as well the structure-activity relationships responsible for the observed differential efficacy between these 2 related isoflavans against the cattle tick.

Data collection for risk assessments on animal health (Acronym: DACRAH) : Final Report

“…The European Food Safety Authority reserves its rights, view and position as regards the issues addressed and the conclusions reached in the present document, without prejudice to the rights of the authors. (Gutierrez et al, 2015) Vector directly exposed Diluted (0.06-1%) solutions of Matlalines prepared from Eysenhardtia polystachya resulted in higher mortality (92.2-99.4%) in larvae (within 24h) and female ticks (within 14 days) than similarly diluted solution of coatline B (5.3-29.7%) Cypermethrin EC 257-842-9 (Gutierrez et al, 2015) Substance is toxic if swallowed, is very toxic to aquatic life with long lasting effects, is very toxic to aquatic life, is toxic if inhaled, may cause damage to organs through prolonged or repeated exposure, is harmful in contact with skin and may cause respiratory irritation.…”

Phytochemical and Pharmacological Study of the Eysenhardtia Genus

“…It is found throughout Mexico, mainly in the states of Colima, Chiapas, Chihuahua, Coahuila, Mexico City, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, State of Mexico, Morelos, Oaxaca, Puebla, Querétaro, San Luis Potosí, Sinaloa, Sonora, Tamaulipas, Tlaxcala, Veracruz, and Zacatecas. It has also been found in the southeastern United States ( Figure 2 ) [ 22 , 23 ].…”

Plant Bioactives in the Treatment of Inflammation of Skeletal Muscles: A Molecular Perspective

“…Eysenhardtia polystachya. E. polystachya is a subset of the family Fabaceae and is predominantly found throughout Mexico and in the southeastern United States [140,141]. e various parts of the tree is copious in a variety of secondary metabolites, including chalcones, coumarins, dihydrochalcones, fatty acids, flavonoids, flavones, flavanones, isoflavonoids, phenols, pterocarpan, and sugars to name a few [141].…”