title: Fine-scale geographical origin of an insect pest invading North America.
abstract: Invasive species may rapidly spread throughout new areas once introduced, which may potentially lead to serious damage to local fauna and flora. Information on geographical origins, introduction routes, and biology in native regions of such invasive species is of critical importance in identifying means of transport, preventing reintroduction, and establishing control/eradication methods. The plataspid stinkbug Megacopta cribraria, known as kudzu bug, recently invaded North America and now has become not only an agricultural pest of soybean but also a nuisance pest. Here we investigate the geographical origin of the invasive M. cribraria populations. Phylogeographical analyses based on 8.7 kb mitochondrial DNA sequences of the introduced and East Asian native Megacopta populations identified a well-supported clade consisting of the introduced populations and M. punctatissima populations in the Kyushu region of Japan, which strongly suggests that the invading M. cribraria populations are derived from a M. punctatissima population in the Kyushu region. Therefore, the region is proposed as a promising source of natural enemies for biological control of the invasive pest. Based on the phylogenetic information, relationship and treatment of the two Megacopta species are discussed.
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Hosokawa
authors.affiliation: Department of Liberal Arts, The Open University of Japan, Chiba, Chiba, Japan.
authors.forename: Naruo
authors.initials: N
authors.lastname: Nikoh
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
authors.forename: Takema
authors.initials: T
authors.lastname: Fukatsu
mesh_terms: D000818:Animals; D001483:Base Sequence; D061046:Biological Control Agents; D004272:DNA, Mitochondrial / Q000145:classification* / Q000235:genetics; D005260:Female; D006239:Haplotypes; D020062:Heteroptera / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics; D058865:Introduced Species; D007564:Japan; D008297:Male; D008969:Molecular Sequence Data; D009656:North America; D010802:Phylogeny; D058974:Phylogeography
chemical_list: D061046:Biological Control Agents; D004272:DNA, Mitochondrial