title: Detection of amitraz and malathion resistance in field populations of Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) in Jammu region of India.
abstract: Detection of resistance levels against amitraz and malathion in Rhipicephalus (Boophilus) microplus collected from four districts of Jammu region (India) was carried out using the adult immersion test. The regression graphs of probit mortality of ticks plotted against log values of concentration of drugs were utilised for the determination of slope of mortality, lethal concentration for 50% (LC50), 95% (LC95) and resistance factor (RF). On the basis of the data generated on variables (mortality, egg mass weight, reproductive index and percentage inhibition of oviposition) the resistance level was categorised as I, II, III and IV. Out of these four districts, resistance to amitraz was detected at level I in Udhampur (RF = 2.81), Jammu (RF = 2.53) and Samba isolates (RF = 2.24) whereas Rajouri isolate was found susceptible (RF = 1.0). Resistance to malathion was detected at level I in Udhampur (RF = 4.01) and Jammu isolates (RF = 1.76) whereas Rajouri (RF = 0.472) and Samba (RF = 0.199) isolates were found susceptible. The data generated on amitraz and malathion resistance status will help in formulating a tick control strategy in the region.
authors.affiliation: Division of Veterinary Parasitology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology, R.S. Pura-181 102, Jammu, India.
authors.forename: S
authors.initials: S
authors.lastname: Dutta
authors.affiliation: Division of Veterinary Parasitology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology, R.S. Pura-181 102, Jammu, India.
authors.forename: R
authors.initials: R
authors.lastname: Godara
authors.affiliation: Division of Veterinary Parasitology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology, R.S. Pura-181 102, Jammu, India. parasitologyskuastjammu@gmail.com.
authors.forename: R
authors.initials: R
authors.lastname: Katoch
authors.affiliation: Division of Veterinary Parasitology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology, R.S. Pura-181 102, Jammu, India.
authors.forename: A
authors.initials: A
authors.lastname: Yadav
authors.affiliation: Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, 180 001, India.
authors.forename: M
authors.initials: M
authors.lastname: Katoch
authors.affiliation: Department of Veterinary Parasitology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, 141 004, India.
authors.forename: N K
authors.initials: NK
authors.lastname: Singh
mesh_terms: D056810:Acaricides / Q000494:pharmacology*; D000818:Animals; D005260:Female; D007194:India; D007305:Insecticide Resistance; D008294:Malathion / Q000494:pharmacology*; D048494:Rhipicephalus / Q000187:drug effects*; D014052:Toluidines / Q000494:pharmacology*
chemical_list: D056810:Acaricides; D014052:Toluidines; C014983:amitraz; D008294:Malathion
keywords: Amitraz; Malathion; Resistance; Rhipicephalus (Boophilus) microplus