Translator Disclaimer
15 January 2021 A field study on the relationship between tick burden and deltamethrin resistance in Rhipicephalus microplus isolates of Indian household cattle
Azhahianambi Palavesam, Ram Narendran Ramakrishnan, Tirunelveli Jayagopal Harikrishnan, Sharath V Sagar, Abiraami Rajeswaran, Gopal Dhinakar Raj, Bhaskaran Ravi Latha
Author Affiliations +
Abstract

A total of 2809 ixodid ticks were collected by screening 4560 household cattle from six different agro-climatic zones of Tamil Nadu, a southern state of India. Among the ixodid ticks, Rhipicephalus microplus tick isolates were subjected to Adult Immersion Test (AIT) and Larval Packet Test (LPT) using deltamethrin. The mean % of ixodid tick infested cattle population was 63.2%±10.9. Positive correlation was found between the tick burden on household cattle and Resistance Factor (R=0.66). Further, 44% variance in the tick burden on cattle is explained by LPT based resistance factor suggesting deltamethrin resistance level is one of the contributing factors to the tick load on cattle. Analysis of DNA sequence of sodium channel gene domain II-S4-5 linker region of all deltamethrin resistant R. microplus tick isolates, confirmed the absence of point mutation at the 190th nucleotide which suggests the possible mutation in other regions of sodium channel gene of R. microplus tick isolates of south India and/or alternate resistance mechanisms.

© Systematic & Applied Acarology Society
Azhahianambi Palavesam, Ram Narendran Ramakrishnan, Tirunelveli Jayagopal Harikrishnan, Sharath V Sagar, Abiraami Rajeswaran, Gopal Dhinakar Raj, and Bhaskaran Ravi Latha "A field study on the relationship between tick burden and deltamethrin resistance in Rhipicephalus microplus isolates of Indian household cattle," Systematic and Applied Acarology 26(1), 289-303, (15 January 2021). https://doi.org/10.11158/saa.26.1.16
Received: 16 October 2020; Accepted: 4 December 2020; Published: 15 January 2021
JOURNAL ARTICLE
15 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top