Origin of resistance to pyrethroids in the redlegged earth mite (Halotydeus destructor) in Australia: repeated local evolution and migration
Qiong Yang, Paul A Umina, Gordana Rasic, Nicholas Bell, Jichao Fang, Alan Lord, Ary A Hoffmann
PEST MANAGEMENT SCIENCE | JOHN WILEY & SONS LTD | Published : 2019
BACKGROUND: Halotydeus destructor is a major pest of crops and pastures across southern parts of Australia. This invasive mite has been chemically controlled for over 50 years, but resistance to synthetic pyrethroids and organophosphates is developing. Understanding processes behind the emerging resistance is important for effective management efforts. We undertook a ddRAD pool-sequencing approach to analyse genome-wide single nucleotide polymorphism variation in H. destructor population samples at two scales: local resistance across a set of fields, and regional resistance across their Australian range, along with toxicology bioassays to screen for pyrethroid resistance. RESULTS: Spatial pa..View full abstract
Awarded by Grains Research and Development Corporation
This research was supported by the Grains Research and Development Corporation project UM00057. We thankOwain Edwards and Xuan Cheng for technical assistance, Tom Walsh for providing the draft genome, and Jessica Chung, Shujun Wei, Lijun Cao and Igor Filipovic for bioinformatics assistance.