INVESTIGADORES
TOLOZA Ariel Ceferino
artículos
Título:
Ovicidal and adulticidal effect of monoterpenoids against permethrin-resistant human head lice Pediculus humanus capitis
Autor/es:
A. C. TOLOZA, C. VASSENA AND M.I. PICOLLO
Revista:
MEDICAL AND VETERINARY ENTOMOLOGY
Referencias:
Año: 2008 vol. 22 p. 335 - 339
ISSN:
0269-283X
Resumen:
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Abstract. The improper use of pediculicides containing permethrin has led to the
development of resistance. Thus, new alternatives for control are needed.
Plant-derived insecticides are attractive alternatives to common chemical
insecticides because most of them are environmental friendly and non-toxic to
mammals. The toxic activity of 23 monoterpenoids belonging to several chemical classes
was tested against the eggs of permethrin-resistant head lice Pediculus humanus capitis De Geer (Phthiraptera:
Pediculidae). Significant differences in ovicidal action were observed among
the tested substances. The most effective chemicals were hydrocarbons and
ethers, followed by ketones, alcohols, phenols and esters. A linear
relationship between egg mortality and knockdown time (KT50) on
adult by the tested components revealed that most of the components were effective
on both egg and adult stages. The monoterpenoids described herein are good
candidates as effective pediculicides.
