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Acaricidal toxicities and synergistic activities of Salvia lavandulifolia oil constituents against synanthropic mites
Author(s) -
Lee MyungJi,
Park JunHwan,
Lee HoiSeon
Publication year - 2018
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4924
Subject(s) - camphene , camphor , tyrophagus putrescentiae , chemistry , essential oil , bioassay , limonene , acaricide , food science , dust mites , eucalyptol , toxicology , botany , biology , organic chemistry , allergy , mite , allergen , ecology , immunology
BACKGROUND The acaricidal activity of Salvia lavandulifolia oil and its major components was evaluated using contact and vapor bioassays. Synergistic interactions among components contained in S. lavandulifolia oil were studied. RESULTS The 50% lethal dose (LD 50 ) of S. lavandulifolia oil was 3.66, 3.37, and 5.04 μg cm −3 , respectively, in the vapor bioassay against Dermatophagoides farinae, Dermatophagoides pteronyssinus and Tyrophagus putrescentiae . The major components of S. lavandulifolia oil were (−)‐camphor, camphene, 1,8‐cineole, (±)‐limonene, and α‐pinene (79.11% combined). Several combinations of these components exhibited synergistic effects against D. farinae, D. pteronyssinus , and T. putrescentiae , particularly (−)‐camphor, camphene, and α‐pinene. (−)‐Camphor usually had synergistic interactive effects in the mixtures. For the vapor action, the mixture of (−)‐camphor, camphene and α‐pinene was the most potent combination against D. farinae ( R = 2.34), D. pteronyssinus ( R = 2.75), and T. putrescentiae ( R = 2.30) when used at their naturally occurring ratio. CONCLUSION This study is the first report on the acaricidal activity of S. lavandulifolia oil and the synergistic interactive effects of its components against D. farinae, D. pteronyssinus and T. putrescentiae . The oil may be an alternative tool for the control of synanthropic mites. © 2018 Society of Chemical Industry