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Genetics of lineage diversification and the evolution of host usage in the economically important wheat curl mite, Aceria tosichella Keifer, 1969

Skoracka, Anna, Lopes, Luís Filipe, Alves, Maria Judite, Miller, Adam, Lewandowski, Mariusz, Szydło, Wiktoria, Majer, Agnieszka, Różańska, Elżbieta and Kuczyński, Lechosław 2018, Genetics of lineage diversification and the evolution of host usage in the economically important wheat curl mite, Aceria tosichella Keifer, 1969, BMC evolutionary biology, vol. 18, pp. 1-15, doi: 10.1186/s12862-018-1234-x.

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Title Genetics of lineage diversification and the evolution of host usage in the economically important wheat curl mite, Aceria tosichella Keifer, 1969
Formatted title Genetics of lineage diversification and the evolution of host usage in the economically important wheat curl mite, Aceria tosichella Keifer, 1969
Author(s) Skoracka, Anna
Lopes, Luís Filipe
Alves, Maria Judite
Miller, AdamORCID iD for Miller, Adam orcid.org/0000-0002-1632-7206
Lewandowski, Mariusz
Szydło, Wiktoria
Majer, Agnieszka
Różańska, Elżbieta
Kuczyński, Lechosław
Journal name BMC evolutionary biology
Volume number 18
Article ID 122
Start page 1
End page 15
Total pages 15
Publisher BioMed Central
Place of publication London, Eng.
Publication date 2018-08-07
ISSN 1471-2148
1471-2148
Keyword(s) Aceria tosichella
demographic history
genetic diversity
host-associations
lineage diversification
species delimitation
animals
base sequence
Bayes theorem
calibration
DNA, mitochondrial
demography
gene flow
genetic variation
host-pathogen interactions
mites
mitochondria
phylogeny
plant diseases
time factors
triticum
science & technology
life sciences & biomedicine
evolutionary biology
genetics & heredity
Summary BACKGROUND: Understanding the mechanisms that underlie the diversification of herbivores through interactions with their hosts is important for their diversity assessment and identification of expansion events, particularly in a human-altered world where evolutionary processes can be exacerbated. We studied patterns of host usage and genetic structure in the wheat curl mite complex (WCM), Aceria tosichella, a major pest of the world's grain industry, to identify the factors behind its extensive diversification.

RESULTS: We expanded on previous phylogenetic research, demonstrating deep lineage diversification within the taxon, a complex of distinctive host specialist and generalist lineages more diverse than previously assumed. Time-calibrated phylogenetic reconstruction inferred from mitochondrial DNA sequence data suggests that lineage diversification pre-dates the influence of agricultural practices, and lineages started to radiate in the mid Miocene when major radiations of C4 grasses is known to have occurred. Furthermore, we demonstrated that host specificity is not phylogenetically constrained, while host generalization appears to be a more derived trait coinciding with the expansion of the world's grasslands. Demographic history of specialist lineages have been more stable when compared to generalists, and their expansion pre-dated all generalist lineages. The lack of host-associated genetic structure of generalists indicates gene flow between mite populations from different hosts.

CONCLUSIONS: Our analyses demonstrated that WCM is an unexpectedly diverse complex of genetic lineages and its differentiation is likely associated with the time of diversification and expansion of its hosts. Signatures of demographic histories and expansion of generalists are consistent with the observed proliferation of the globally most common lineages. The apparent lack of constrains on host use, coupled with a high colonization potential, hinders mite management, which may be further compromised by host range expansion. This study provides a significant contribution to the growing literature on host-association and diversification in herbivorous invertebrates.
Language eng
DOI 10.1186/s12862-018-1234-x
Field of Research 0603 Evolutionary Biology
0604 Genetics
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2018, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30113241

Document type: Journal Article
Collections: School of Life and Environmental Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.