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Detection and geographical distribution of the organophosphate resistance‐associated Δ3Q ace mutation in the olive fruit fly, Bactrocera oleae (Rossi)
Author(s) -
Kakani Evdoxia G.,
Sagri Efthymia,
Omirou Michalis,
Ioannides Ioannis M.,
Mathiopoulos Kostas D.
Publication year - 2014
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.3564
Subject(s) - biology , tephritidae , organophosphate , bactrocera , pest analysis , restriction fragment length polymorphism , genetics , polymerase chain reaction , mutation , veterinary medicine , gene , botany , pesticide , ecology , medicine
Abstract BACKGROUND The olive fruit fly, Bactrocera oleae (Rossi) (Diptera: Tephritidae), is the most important pest of olives. Its control is based mostly on organophosphate ( OP ) insecticides, a practice that has led to resistance development. OP resistance in B. oleae has been associated with three mutations in the acetylcholinesterase ( AChE ), the product of ace gene. The current study presents new diagnostic tests for the detection of the ace mutations and aims at monitoring the frequency of the Δ3Q mutation, which appears associated with resistance at higher OP doses in natural olive fly populations . RESULTS An allele‐specific polymerase chain reaction ( PCR ), a PCR‐RFLP (restriction fragment length polymorphism) and a Taq‐Man test were developed for the Δ3Q mutation detection and a new duplex quantitative PCR assay was designed for the G488S and I214V mutations. Moreover, the frequency of Δ3Q mutation was examined in ten populations of eight countries around the Mediterranean basin. The highest frequencies (10%) were found in Greece and Italy, whereas a gradual decrease of Δ3Q frequency towards the western Mediterranean was noted . CONCLUSION Robust tests for insecticide resistance mutations at their incipient levels are essential tools to monitor the increase and geographical spread of such mutations. Three different tests were developed for AChE‐Δ3Q that indicated its association with OP applications across the Mediterranean. © 2013 Society of Chemical Industry