Chromosome structural rearrangements in invasive haplodiploid ambrosia beetles revealed by the genomes of Euwallacea fornicatus (Eichhoff) and Euwallacea similis (Ferrari) (Coleoptera, Curculionidae, Scolytinae)

Genome Biology and Evolution, Год журнала: 2024, Номер 16(11)

Опубликована: Окт. 21, 2024

Abstract Bark and ambrosia beetles are among the most ecologically economically damaging introduced plant pests worldwide. Life history traits including polyphagy, haplodiploidy, inbreeding polygyny, symbiosis with fungi contribute to their dispersal impact. Species vary in interactions host trees, many attacking stressed or recently dead such as globally distributed Euwallacea similis (Ferrari). Other species, like Polyphagous Shot Hole Borer fornicatus (Eichhoff), can attack over 680 plants is causing considerable economic damage several countries. Despite notoriety, publicly accessible genomic resources for Hopkins species scarce, hampering our understanding of invasive capabilities well modern control measures, surveillance, management. Using a combination long short read sequencing platforms, we assembled annotated high quality (BUSCO > 98% complete) pseudo-chromosome-level genomes these species. Comparative macrosynteny analysis identified an increased number pseudo-chromosome scaffolds haplodiploid compared diploid outbred due fission events. This suggests that life impact chromosome structure. Further, genome E. had higher relative proportion repetitive elements, up 17% more, than similis. Metagenomic assembly pipelines microbiota associated both Fusarium fungal symbionts novel Wolbachia strain. These will how related evolution management pests.

Язык: Английский

The worldwide invasion history of a pest ambrosia beetle inferred using population genomics

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Янв. 25, 2023

Abstract Xylosandrus crassiusculus , a fungus-farming wood borer native to Southeastern Asia, is the most rapidly spreading invasive ambrosia species worldwide. Previous studies focusing on its genetic structure suggested existence of cryptic variation in this species. Yet, these used different markers, focused geographical areas, and did not include Europe. Our first goal was determine worldwide based both mitochondrial genomic markers. second study X. ’ invasion history global level identify origins We COI RAD sequencing design characterize 188 206 specimens worldwide, building comprehensive dataset for any beetle date. The results were largely consistent between Two differentiated clusters invasive, albeit regions world. two markers inconsistent only few found exclusively Japan. Mainland USA could have acted as source further expansion Canada Argentina through stepping-stone bridgehead events. showed that Europe colonized by Cluster 2 complex including several arrivals from multiple area, possibly USA. also Spain directly Italy intracontinental dispersion. It unclear whether mutually exclusive allopatric distribution Clusters due neutral effects or ecological requirements.

Язык: Английский