Restricted Gene Flow among Lineages of Thrips tabaci Supports Genetic Divergence Among Cryptic Species Groups
Knowledge of the relative influence of population- versus species-level genetic variation is important to understand patterns of phenotypic variation and ecological relationships that exist among and within morphologically indistinguishable cryptic species and subspecies. In the case of cryptic spec...
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Published in | PloS one Vol. 11; no. 9; p. e0163882 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
Public Library of Science
30.09.2016
Public Library of Science (PLoS) |
Subjects | |
Online Access | Get full text |
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Summary: | Knowledge of the relative influence of population- versus species-level genetic variation is important to understand patterns of phenotypic variation and ecological relationships that exist among and within morphologically indistinguishable cryptic species and subspecies. In the case of cryptic species groups that are pests, such knowledge is also essential for devising effective population management strategies. The globally important crop pest Thrips tabaci is a taxonomically difficult group of putatively cryptic species. This study examines population genetic structure of T. tabaci and reproductive isolation among lineages of this species complex using microsatellite markers and mitochondrial COI sequences. Overall, genetic structure supports T. tabaci as a cryptic species complex, although limited interbreeding occurs between different clonal groups from the same lineage as well as between individuals from different lineages. These results also provide evidence that thelytoky and arrhenotoky are not fixed phenotypes among members of different T. tabaci lineages that have been generally associated with either reproductive mode. Possible biological and ecological factors contributing to these observations are discussed. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Competing Interests: The authors have declared that no competing interests exist. Conceptualization: ALJ GGK BAN. Data curation: ALJ. Formal analysis: ALJ. Funding acquisition: ALJ. Investigation: ALJ GGK BAN ALJ. Methodology: ALJ GGK BAN ELV. Project administration: ALJ. Resources: ALJ GGK BAN ELV. Software: ALJ GGK ELV. Supervision: ALJ. Validation: ALJ GGK ELV. Visualization: ALJ. Writing – original draft: ALJ. Writing – review & editing: GGK ELV BAN. Current address: Department of Entomology, Texas A&M University, College Station, TX, United States of America Current address: Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, United States of America |
ISSN: | 1932-6203 1932-6203 |
DOI: | 10.1371/journal.pone.0163882 |