Global patterns of genomic and phenotypic variation in the invasive harlequin ladybird
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Published:2023-06-19
Issue:1
Volume:21
Page:
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ISSN:1741-7007
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Container-title:BMC Biology
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language:en
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Short-container-title:BMC Biol
Author:
Li Hongran, Peng Yan, Wang Yansong, Summerhays Bryce, Shu Xiaohan, Vasquez Yumary, Vansant Hannah, Grenier Christy, Gonzalez Nicolette, Kansagra Khyati, Cartmill Ryan, Sujii Edison Ryoiti, Meng Ling, Zhou Xuguo, Lövei Gábor L., Obrycki John J., Sethuraman Arun, Li BaopingORCID
Abstract
AbstractBackgroundThe harlequin ladybirdHarmonia axyridis(Coleoptera: Coccinellidae), native to Asia, has been introduced to other major continents where it has caused serious negative impacts on local biodiversity. Though notable advances to understand its invasion success have been made during the past decade, especially with then newer molecular tools, the conclusions reached remain to be confirmed with more advanced genomic analyses and especially using more samples from larger geographical regions across the native range. Furthermore, althoughH. axyridisis one of the best studied invasive insect species with respect to life history traits (often comparing invasive and native populations), the traits responsible for its colonization success in non-native areas warrant more research.ResultsOur analyses of genome-wide nuclear population structure indicated that an eastern Chinese population could be the source of all non-native populations and revealed several putatively adaptive candidate genomic loci involved in body color variation, visual perception, and hemolymph synthesis. Our estimates of evolutionary history indicate (1) asymmetric migration with varying population sizes across its native and non-native range, (2) a recent admixture between eastern Chinese and American populations in Europe, (3) signatures of a large progressive, historical bottleneck in the common ancestors of both populations and smaller effective sizes of the non-native population, and (4) the southwest origin and subsequent dispersal routes within its native range in China. In addition, we found that while two mitochondrial haplotypes-Hap1 and Hap2 were dominant in the native range, Hap1 was the only dominant haplotype in the non-native range. Our laboratory observations in both China and USA found statistical yet slight differences between Hap1 and Hap2 in some of life history traits.ConclusionsOur study onH.axyridisprovides new insights into its invasion processes into other major continents from its native Asian range, reconstructs a geographic range evolution across its native region China, and tentatively suggests that its invasiveness may differ between mitochondrial haplotypes.
Funder
National Key R&D Program of China NSF CAREER Award NSF-ABI USDA-REEU
Publisher
Springer Science and Business Media LLC
Subject
Cell Biology,Developmental Biology,Plant Science,General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,Physiology,Ecology, Evolution, Behavior and Systematics,Structural Biology,Biotechnology
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