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Resistance and cross-resistance to insecticides in human head lice from Florida and California
- Source :
-
Pesticide Biochemistry & Physiology . Nov2004, Vol. 80 Issue 3, p192-201. 10p. - Publication Year :
- 2004
-
Abstract
- Abstract: Head lice from Florida (SF-HL) and California (SC-HL) were resistant to permethrin compared with colonized susceptible lice from Panama (PA-HL) (5.5- and 3.4-fold, respectively) and Ecuador (EC-HL) (8.5- and 5.3-fold, respectively). Permethrin-resistant lice were cross-resistant to pyrethrum and DDT. DNA sequencing validated presence of kdr-type mutations (T929I and L932F). Permethrin resistance was synergized by piperonyl butoxide (PBO) in SC-HL. Resistance to malathion in SF-HL (1.4–2.2-fold) and SC-HL (2.1–3.6-fold) was detected. Malathion resistance in SF-HL was synergized by S,S,S-tributylphosphorotrithioate (DEF) and by PBO in SC-HL. Malathion/permethrin-resistant lice from the UK (BR-HL) were synergized by DEF but not synerziged by PBO. PBO protected BR-HL from malathion, indicating suppressed desulfuration. Abamectin resistance in SF-HL (1.7–2.5-fold) and SC-HL (1.8–2.3-fold) was detected. No resistance to lindane was found. Thus, multiple resistance mechanisms against commonly available and widely used pediculicides and insecticides are apparently occurring. [Copyright &y& Elsevier]
- Subjects :
- *INSECTICIDES
*LICE
*PYRETHRUM (Plant)
*NUCLEOTIDE sequence
*MALATHION
Subjects
Details
- Language :
- English
- ISSN :
- 00483575
- Volume :
- 80
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Pesticide Biochemistry & Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 15450824
- Full Text :
- https://doi.org/10.1016/j.pestbp.2004.07.008