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Wolbachia-driven se...
Wolbachia-driven selective sweep in a range expanding insect species
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- Deng, Junchen (author)
- Jagiellonian University,Lund University
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- Assandri, Giacomo (author)
- Italian Institute for Environmental Protection and Research (ISPRA)
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- Chauhan, Pallavi (author)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,MEMEG,Molekylär cellbiologi,Evolutionary ecology,Department of Biology,Faculty of Science,Molecular Cell Biology
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- Futahashi, Ryo (author)
- National Institute of Advanced Industrial Science and Technology (AIST)
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- Galimberti, Andrea (author)
- University of Milano-Bicocca
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- Hansson, Bengt (author)
- Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Könsskillnadernas genetik,Forskargrupper vid Lunds universitet,Molekylär ekologi och evolution,CAnMove - Centrum för forskning om djurs spridning och flyttning,Department of Biology,Faculty of Science,Genetics of Sex Differences,Lund University Research Groups,Molecular Ecology and Evolution Lab,CAnMove - Centre for Animal Movement Research
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- Lancaster, Lesley T. (author)
- University of Aberdeen
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- Takahashi, Yuma (author)
- Chiba University
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- Svensson, Erik I. (author)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Populationsbiologi, mikro- och makroevolution,Forskargrupper vid Lunds universitet,CAnMove - Centrum för forskning om djurs spridning och flyttning,Evolutionary ecology,Department of Biology,Faculty of Science,Population biology, micro- and macroevolution,Lund University Research Groups,CAnMove - Centre for Animal Movement Research
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- Duplouy, Anne (author)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Biodiversity,Department of Biology,Faculty of Science,University of Helsinki
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(creator_code:org_t)
- 2021-09-25
- 2021
- English.
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In: BMC Ecology and Evolution. - : Springer Science and Business Media LLC. - 2730-7182. ; 21:1
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Abstract
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- Background: Evolutionary processes can cause strong spatial genetic signatures, such as local loss of genetic diversity, or conflicting histories from mitochondrial versus nuclear markers. Investigating these genetic patterns is important, as they may reveal obscured processes and players. The maternally inherited bacterium Wolbachia is among the most widespread symbionts in insects. Wolbachia typically spreads within host species by conferring direct fitness benefits, and/or by manipulating its host reproduction to favour infected over uninfected females. Under sufficient selective advantage, the mitochondrial haplotype associated with the favoured maternally-inherited symbiotic strains will spread (i.e. hitchhike), resulting in low mitochondrial genetic variation across the host species range. Method: The common bluetail damselfly (Ischnura elegans: van der Linden, 1820) has recently emerged as a model organism for genetics and genomic signatures of range expansion during climate change. Although there is accumulating data on the consequences of such expansion on the genetics of I. elegans, no study has screened for Wolbachia in the damselfly genus Ischnura. Here, we present the biogeographic variation in Wolbachia prevalence and penetrance across Europe and Japan (including samples from 17 populations), and from close relatives in the Mediterranean area (i.e. I. genei: Rambur, 1842; and I. saharensis: Aguesse, 1958). Results: Our data reveal (a) multiple Wolbachia-strains, (b) potential transfer of the symbiont through hybridization, (c) higher infection rates at higher latitudes, and (d) reduced mitochondrial diversity in the north-west populations, indicative of hitchhiking associated with the selective sweep of the most common strain. We found low mitochondrial haplotype diversity in the Wolbachia-infected north-western European populations (Sweden, Scotland, the Netherlands, Belgium, France and Italy) of I. elegans, and, conversely, higher mitochondrial diversity in populations with low penetrance of Wolbachia (Ukraine, Greece, Montenegro and Cyprus). The timing of the selective sweep associated with infected lineages was estimated between 20,000 and 44,000 years before present, which is consistent with the end of the last glacial period about 20,000 years. Conclusions: Our findings provide an example of how endosymbiont infections can shape spatial variation in their host evolutionary genetics during postglacial expansion. These results also challenge population genetic studies that do not consider the prevalence of symbionts in many insects, which we show can impact geographic patterns of mitochondrial genetic diversity.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- Damselfly
- Endosymbiosis
- Genetic diversity
- Mitochondria
- Phylogeography
Publication and Content Type
- art (subject category)
- ref (subject category)
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Deng, Junchen
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Assandri, Giacom ...
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Chauhan, Pallavi
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Futahashi, Ryo
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Galimberti, Andr ...
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Hansson, Bengt
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Lancaster, Lesle ...
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Takahashi, Yuma
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Svensson, Erik I ...
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Duplouy, Anne
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
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BMC Ecology and ...
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Lund University