Alert SA-AGAM-05 (Cyp9k1)#

This alert reports selection signals on Chromosome X within the region 14,992,258-15,583,310 bp.

Selection signals#

Selection signals overlapping this genome region are shown in the figure below.

Cohorts affected#

Overlapping selection signals are found in the following cohorts.

Table 1. Cohorts with selection signals overlapping this selection alert.
Cohort Country Region District Taxon Year Quarter Sample Size
Burkina Faso / Comoe / coluzzii / 2011 Burkina Faso Cascades Comoe coluzzii 2011 18
Burkina Faso / Comoe / coluzzii / 2012 Burkina Faso Cascades Comoe coluzzii 2012 63
Burkina Faso / Comoe / coluzzii / 2015 Burkina Faso Cascades Comoe coluzzii 2015 33
Burkina Faso / Comoe / coluzzii / 2016 Burkina Faso Cascades Comoe coluzzii 2016 53
Burkina Faso / Houet / coluzzii / 2012 / Q3 Burkina Faso Hauts-Bassins Houet coluzzii 2012 3 78
Burkina Faso / Houet / coluzzii / 2014 / Q3 Burkina Faso Hauts-Bassins Houet coluzzii 2014 3 32
Burkina Faso / Houet / gambiae / 2012 / Q3 Burkina Faso Hauts-Bassins Houet gambiae 2012 3 73
Burkina Faso / Houet / gambiae / 2014 / Q3 Burkina Faso Hauts-Bassins Houet gambiae 2014 3 41
Benin / Djougou / coluzzii / 2017 / Q2 Benin Donga Djougou coluzzii 2017 2 78
Benin / Djougou / gambiae / 2017 / Q2 Benin Donga Djougou gambiae 2017 2 30
Benin / Djougou / gambiae / 2017 / Q3 Benin Donga Djougou gambiae 2017 3 34
Benin / Avrankou / coluzzii / 2017 / Q3 Benin Oueme Avrankou coluzzii 2017 3 88
Cote d'Ivoire / Sud-Comoe / gambiae / 2017 / Q3 Cote d'Ivoire Comoe Sud-Comoe gambiae 2017 3 37
Cote d'Ivoire / Agneby-Tiassa / coluzzii / 2012 Cote d'Ivoire Lagunes Agneby-Tiassa coluzzii 2012 80
Ghana / Ablekuma Central Municipal / coluzzii / 2018 / Q1 Ghana Greater Accra Region Ablekuma Central Municipal coluzzii 2018 1 266
Ghana / La-Nkwantanang-Madina / gambiae / 2017 / Q4 Ghana Greater Accra Region La-Nkwantanang-Madina gambiae 2017 4 200
Ghana / Adansi Akrofuom / coluzzii / 2018 / Q4 Ghana Ashanti Region Adansi Akrofuom coluzzii 2018 4 64
Ghana / Adansi South / coluzzii / 2018 / Q4 Ghana Ashanti Region Adansi South coluzzii 2018 4 36
Ghana / Adansi South / gambiae / 2018 / Q4 Ghana Ashanti Region Adansi South gambiae 2018 4 29
Ghana / Amansie Central / coluzzii / 2018 / Q4 Ghana Ashanti Region Amansie Central coluzzii 2018 4 69
Ghana / Bekwai Municipal / coluzzii / 2018 / Q4 Ghana Ashanti Region Bekwai Municipal coluzzii 2018 4 53
Ghana / Twifo Atti-Morkwa / coluzzii / 2012 / Q3 Ghana Central Region Twifo Atti-Morkwa coluzzii 2012 3 25
Ghana / Upper Denkyira East Municipal / coluzzii / 2018 / Q4 Ghana Central Region Upper Denkyira East Municipal coluzzii 2018 4 23
Ghana / Upper Denkyira West / coluzzii / 2018 / Q4 Ghana Central Region Upper Denkyira West coluzzii 2018 4 118
Ghana / New Juaben South Municipal / gambiae / 2012 / Q4 Ghana Eastern Region New Juaben South Municipal gambiae 2012 4 23
Ghana / Effia Kwesimintsim Municipal / coluzzii / 2012 / Q3 Ghana Western Region Effia Kwesimintsim Municipal coluzzii 2012 3 24
Gambia, The / Lower Fuladu West / coluzzii / 2012 / Q4 Gambia, The Janjanbureh Lower Fuladu West coluzzii 2012 4 172
Guinea / Kissidougou / gambiae / 2012 / Q4 Guinea Faranah Kissidougou gambiae 2012 4 51
Guinea / Macenta / gambiae / 2012 / Q4 Guinea Nzerekore Macenta gambiae 2012 4 51
Mali / Kati / coluzzii / 2014 / Q3 Mali Koulikouro Kati coluzzii 2014 3 27
Mali / Kati / gambiae / 2014 / Q3 Mali Koulikouro Kati gambiae 2014 3 24
Mali / Yanfolila / coluzzii / 2012 / Q4 Mali Sikasso Yanfolila coluzzii 2012 4 23
Mali / Yanfolila / gambiae / 2012 / Q4 Mali Sikasso Yanfolila gambiae 2012 4 53
Mali / Bla / coluzzii / 2004 / Q3 Mali Segou Bla coluzzii 2004 3 19
Uganda / Kalangala / gambiae / 2015 / Q2 Uganda Central Region Kalangala gambiae 2015 2 60
Uganda / Busia / gambiae / 2016 / Q2 Uganda Eastern Region Busia gambiae 2016 2 24
Uganda / Mayuge / gambiae / 2017 / Q2 Uganda Eastern Region Mayuge gambiae 2017 2 21
Uganda / Tororo / gambiae / 2012 / Q4 Uganda Eastern Region Tororo gambiae 2012 4 112
Uganda / Kanungu / gambiae / 2012 / Q4 Uganda Western Region Kanungu gambiae 2012 4 95

Insecticide resistance genes#

The following genes are found within this genome region and may be driving recent positive selection based on evidence for an association with insecticide resistance. Please note that other genes are also within the affected genome region and may be driving selection.

AGAP000818 (Cyp9k1)#

This gene encodes a cytochrome P450 enzyme which is associated with pyrethroid resistance through increased expression and where copy number variation has been observed in Anopheles gambiae and Anopheles coluzzii. See also:

  • Main et al. (2015) Complex genome evolution in Anopheles coluzzii associated with increased insecticide usage in Mali

  • Main et al. (2018) Genetic variation associated with increased insecticide resistance in the malaria mosquito, Anopheles coluzzii

  • Vontas et al. (2018) Rapid selection of a pyrethroid metabolic enzyme CYP9K1 by operational malaria control activities

  • Lucas et al. (2019) Whole-genome sequencing reveals high complexity of copy number variation at insecticide resistance loci in malaria mosquitoes

  • Tennessen et al. (2020) A population genomic unveiling of a new cryptic mosquito taxon within the malaria-transmitting Anopheles gambiae complex

  • Lucas et al. (2023) Genome-wide association studies reveal novel loci associated with pyrethroid and organophosphate resistance in Anopheles gambiae and Anopheles coluzzii

See also#