The Genomic Basis of Adaptation to High Elevations in Africanized Honey Bees

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Everitt, TuridUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab (author)

The Genomic Basis of Adaptation to High Elevations in Africanized Honey Bees

Article/chapterEnglish2023

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Oxford University Press,2023
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LIBRIS-ID:oai:DiVA.org:uu-513333
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-513333URI
https://doi.org/10.1093/gbe/evad157DOI

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Language:English
Summary in:English

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A range of different genetic architectures underpin local adaptation in nature. Honey bees (Apis mellifera) in the Eastern African Mountains harbor high frequencies of two chromosomal inversions that likely govern adaptation to this high-elevation habitat. In the Americas, honey bees are hybrids of European and African ancestries and adaptation to latitudinal variation in climate correlates with the proportion of these ancestries across the genome. It is unknown which, if either, of these forms of genetic variation governs adaptation in honey bees living at high elevations in the Americas. Here, we performed whole-genome sequencing of 29 honey bees from both high- and low-elevation populations in Colombia. Analysis of genetic ancestry indicated that both populations were predominantly of African ancestry, but the East African inversions were not detected. However, individuals in the higher elevation population had significantly higher proportions of European ancestry, likely reflecting local adaptation. Several genomic regions exhibited particularly high differentiation between highland and lowland bees, containing candidate loci for local adaptation. Genes that were highly differentiated between highland and lowland populations were enriched for functions related to reproduction and sperm competition. Furthermore, variation in levels of European ancestry across the genome was correlated between populations of honey bees in the highland population and populations at higher latitudes in South America. The results are consistent with the hypothesis that adaptation to both latitude and elevation in these hybrid honey bees are mediated by variation in ancestry at many loci across the genome.

Subject headings and genre

NATURVETENSKAP Biologi Evolutionsbiologi hsv//swe
NATURAL SCIENCES Biological Sciences Evolutionary Biology hsv//eng
local adaptation
honey bee
admixture
introgression
natural selection

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Wallberg, AndreasUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)anwal839 (author)
Christmas, MatthewUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)match108 (author)
Olsson, AnnaUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)annol533 (author)
Hoffmann, WolfgangUniv Pamplona, Grp Biocalorimetria, Pamplona, Colombia. (author)
Neumann, PeterUniv Bern, Inst Bee Hlth, Vetsuisse Fac, Bern, Switzerland.;Agroscope, Bern, Switzerland. (author)
Webster, Matthew ThomasUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)maweb226 (author)
Uppsala universitetInstitutionen för medicinsk biokemi och mikrobiologi (creator_code:org_t)

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In:Genome Biology and Evolution: Oxford University Press15:91759-6653

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