Ground-dwelling weevil (Coleoptera: Curculionidae) communities in fragmented and continuous hardwood forests in south-central Ontario (original) (raw)
2010
J. ent. Soc Ont. 141: 6983 Weevils (Coleoptera: Curculionidae) are the largest family in the animal kingdom and can be found in any habitat where plants grow. Many species not native to North America have invaded both anthropogenic and natural habitats, and the aim of this paper is to determine whether forest landscape continuity has discouraged introduced species. We compared the grounddwelling weevil communities of hardwood forest fragments to those in hardwood stands in a continuously forested landscape, with the prediction that the fragments would have more introduced species. Pitfall traps caught 5090 individuals from 26 species. Both landscapes were dominated by introduced weevils (96% of all individuals), but forest fragments were dominated by Barypeithes pellucidus (Boheman), while Sciaphilus asperatus (Bonsdorff) represented 74% of all weevils caught in the continuous forest. Sixty-four percent of the introduced species were parthenogenetic, and all parthenogenetic species ...
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