Evaluation of medicinal plant extracts against ticks and fluke.
Elango G, Rahuman AA.
Unit of Nanotechnology and Bioactive Natural Products, P. G & Research
Department of Zoology, C. Abdul Hakeem College, Melvisharam, 632 509,
Vellore District, Tamil Nadu, India.
Abstract
The present study was based on assessments of the antiparasitic
activities to determine the efficacies of leaf hexane, chloroform,
ethyl acetate, acetone and methanol extracts of Aegle marmelos (Linn.)
Correa ex Roxb, Andrographis lineata Wallich ex Nees., Andrographis
paniculata (Burm.f.) Wallich ex Nees., Cocculus hirsutus (L.) Diels,
Eclipta prostrata L., and Tagetes erecta L. against the adult cattle
tick Haemaphysalis bispinosa Neumann 1897 (Acarina: Ixodidae), the
larvae of Rhipicephalus (Boophilus) microplus Canestrini 1887 (Acari:
Ixodidae) and sheep fluke Paramphistomum cervi Zeder 1790 (Digenea:
Paramphistomatidae). All plant extracts showed moderate toxic effect
on parasites after 24 h of exposure; however, the highest parasitic
activity was found in leaf ethyl acetate extract of A. lineata,
methanol extract of A. marmelos, A. paniculata, and C. hirsutus
against H. bispinosa (LC(50) = 395.27, 358.45, 327.21 and 420.50 ppm);
ethyl acetate extract of A. paniculata, C. hirsutus, methanol extracts
of A. marmelos, A. lineata, and E. prostrata against the larvae of R.
microplus (LC(50) = 207.70, 258.61, 134.09, 206.00, and 274.33 ppm);
hexane extract of A. lineata, ethyl acetate extract of A. paniculata,
E. prostrata, acetone extracts of T. erecta, methanol extracts of A.
marmelos and C. hirsutus against P. cervi (LC(50) = 254.23, 451.17,
425.73, 253.60, 542.71, and 360.17 ppm), respectively. The present
study is the first report on the veterinary parasitic activity of
plant extracts from Southern India.
PMID: 20922419 [PubMed - as supplied by publisher]
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