Disjunction between canola distribution and the genetic structure of its recently described pest, the canola flower midge (Contarinia brassicola).

ABSTRACT: Population genomics is a useful tool to support integrated pest management as it can elucidate population dynamics, demography, and histories of invasion. Here, we use a restriction site-associated DNA sequencing approach combined with whole-genome amplification (WGA) to assess genomic population structure of a newly described pest of canola, the diminutive canola flower midge, Contarinia brassicola. Clustering analyses recovered little geographic structure across the main canola production region but differentiated several geographically disparate populations at edges of the agricultural zone. Given a lack of alternative hypotheses for this pattern, we suggest these data support alternative hosts for this species and thus our canola-centric view of this midge as a pest has limited

SUBMITTER: Campbell EO 

PROVIDER: S-EPMC7713945 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature