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Genomic divergence and a lack of recent introgression between commercial and wild bumblebees (Bombus terrestris)

Hjort, Cecilia Kardum and Paris, Josephine R. and Olsson, Peter and Herbertsson, Lina and Rodrigues De Miranda, Joachim and Dudaniec, Rachael Y. and Smith, Henrik G. (2022). Genomic divergence and a lack of recent introgression between commercial and wild bumblebees (Bombus terrestris). Evolutionary applications. 15 :3 , 365-382
[Research article]

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Abstract

The global movement of bees for agricultural pollination services can affect local pollinator populations via hybridization. When commercial bumblebees are of the same species but of different geographic origin, intraspecific hybridization may result in beneficial integration of new genetic variation, or alternatively may disrupt locally adapted gene complexes. However, neither the existence nor the extent of genomic introgression and evolutionary divergence between wild and commercial bumblebees is fully understood. We obtained whole-genome sequencing data from wild and commercial Bombus terrestris collected from sites in Southern Sweden with and without long-term use of commercially imported B. terrestris. We search for evidence of introgression, dispersal and genome-wide differentiation in a comparative genomic analysis of wild and commercial bumblebees. Commercial B. terrestris were found in natural environments near sites where commercial bumblebees were used, as well as drifting wild B. terrestris in commercial bumblebee colonies. However, we found no evidence for widespread, recent genomic introgression of commercial B. terrestris into local wild conspecific populations. We found that wild B. terrestris had significantly higher nucleotide diversity (Nei's pi, pi), while the number of segregating sites (Watterson's theta, theta w) was higher in commercial B. terrestris. A highly divergent region on chromosome 11 was identified in commercial B. terrestris and found to be enriched with structural variants. The genes present in this region are involved in flight muscle contraction and structure and pathogen immune response, providing evidence for differing evolutionary processes operating in wild and commercial B. terrestris. We did not find evidence for recent introgression, suggesting that co-occurring commercial B. terrestris have not disrupted evolutionary processes in wild B. terrestris populations.

Authors/Creators:Hjort, Cecilia Kardum and Paris, Josephine R. and Olsson, Peter and Herbertsson, Lina and Rodrigues De Miranda, Joachim and Dudaniec, Rachael Y. and Smith, Henrik G.
Title:Genomic divergence and a lack of recent introgression between commercial and wild bumblebees (Bombus terrestris)
Series Name/Journal:Evolutionary applications
Year of publishing :2022
Volume:15
Number:3
Page range:365-382
Number of Pages:18
Publisher:WILEY
ISSN:1752-4571
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Genetics (medical genetics to be 30107 and agricultural genetics to be 40402)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Bombus terrestris, bumblebees, introgression, pollination, selection, single nucleotide polymorphisms, structural variants, whole-genome sequencing
URN:NBN:urn:nbn:se:slu:epsilon-p-116584
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116584
Additional ID:
Type of IDID
DOI10.1111/eva.13346
Web of Science (WoS)000768306900001
ID Code:27684
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:02 May 2022 14:41
Metadata Last Modified:02 May 2022 14:51

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