Journal
CURRENT OPINION IN INSECT SCIENCE
Volume 27, Issue -, Pages 82-88Publisher
ELSEVIER
DOI: 10.1016/j.cois.2018.04.005
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Funding
- Wellcome Trust [094960/Z/10/Z, 110236/Z/15/Z, 109917/Z/15/Z]
- NIAID [1R011AI082734-01, 5R01AI116811-02]
- Wellcome Trust [094960/Z/10/Z, 110236/Z/15/Z, 109917/Z/15/Z] Funding Source: Wellcome Trust
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Copy number variation (CNV) in insect genomes is a rich source of potentially adaptive polymorphism which may help overcome the constraints of purifying selection on conserved genes and/or permit elevated transcription. Classic studies of amplified esterases and acetylcholinesterase duplication in Culex pipiens quantified evolutionary dynamics of CNV driven by insecticidal selection. A more complex and potentially medically impactful form of CNV is found in Anopheles gambiae, with both heterogeneous duplications and homogeneous amplifications strongly linked with insecticide resistance. Metabolic gene amplification, revealed by shotgun sequencing, appears common in Aedes aegypti, but poorly understood in other mosquito species. Many methodologies have been used to detect CNV in mosquitoes, but relatively few can detect both duplications and amplifications, and contrasting methods should be combined. Genome scans for CNV have been rare to date in mosquitoes, but offer immense potential to determine the overall role of CNV as a component of resistance mechanisms.
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