TY  - JOUR
JF  - Acarologia
T1  - Acaricide resistance in ticks from livestock farms in Abu Dhabi, United Arab Emirates
VL  - 64
IS  - 1
SP  - 138
EP  - 145
PY  - 2024
SN  - 0044-586X
SN  - 2107-7207
PB  - Les Amis d'Acarologia
AU  - Habeeba, Shameem
AU  - Bensalah, Oum K.
AU  - Ibrahim, Ayman
AU  - Al Muhairi, Salama
AU  - Al Hammadi, Zulaikha
AU  - Commey, Abraham
AU  - Osman, Ebrahim
AU  - Saeed, Meera
AU  - Shah, Asma
UR  - https://doi.org/10.24349/utkq-zek0
DO  - 10.24349/utkq-zek0
DA  - 2024-01-17
ET  - 2024-01-17
KW  - Hyalomma spp.
KW  - ticks
KW  - resistance
KW  - cypermethrin
KW  - in vitro bioassay
AB  - The resistance status in Hyalomma ticks collected from animal farms in three different regions of the Emirate of Abu Dhabi (UAE) was estimated using adult immersion tests with various concentrations of cypermethrin (50ppm, 100 ppm, 200 ppm, 400ppm and 800 ppm). Regression graphs of tick mortality plotted against cypermethrin concentrations were utilized to determine lethal concentrations (LC<sub>50</sub> and LC<sub>90</sub>). The data generated on different life history variables (mortality, egg mass weight, reproductive index, and percent inhibition of oviposition) were used to assess the resistance status. Results revealed level III cypermethrin resistance in Hyalomma anatolicum of the Al Hamam region (Al Ain) and level II resistance in the Malaqet region (Al Ain), whereas level I resistance was observed in the other studied locations, except Sweihan (Al Ain) where the tick population was fully susceptible. The LC<sub>90</sub> value of susceptible (Sweihan) H. anatolicum was 244.87ppm and the discriminating dose (DC) was calculated to be 489.74ppm. The present study is the first report of cypermethrin resistance in ticks of the United Arab Emirates and highlights the need to further monitor resistance evolution during the implementation of tick control programs.
ER -