Browsing by Author "Cornelius, Mary L."

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    Both the Squash Bug Anasa tristis and Horned Squash Bug Anasa armigera (Hemiptera: Coreidae) are Attracted to Vittatalactone, the Aggregation Pheromone of Striped Cucumber Beetle
    Weber, Donald C.; Haber, Ariela I.; Pasteur, Kayla; Boyle, Sean M.; Kuhar, Thomas P.; Cornelius, Mary L. (Oxford University Press, 2022-12)
    Vittatalactone, the aggregation pheromone of the striped cucumber beetle, Acalymma vittatum (F.) (Coleoptera: Chrysomelidae), is attractive to two species of squash bugs (Hemiptera: Coreidae), the squash bug Anasa tristis (DeGeer) and horned squash bug Anasa armigera (Say). In field trapping experiments in Maryland and Virginia, clear sticky traps baited with 1 mg of a synthetic 8-isomer mix of vittatalactone captured similar to 9x more of female A. tristis and of both sexes of A. armigera, whereas male A. tristis were not significantly attracted, compared to unbaited traps. A. armigera showed a distinct dose-response to vittatalactone lure loading in the late season, and this species was more attracted than A. tristis, based on comparison to captures from underneath wooden boards emplaced in adjacent fields. Results suggest that vittatalactone could be a 'keystone semiochemical' in colonization of cucurbit hosts by specialist herbivores, and may offer the opportunity for multi-species behavioral control as a component of integrated pest management in cucurbit crops.
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    Indigenous arthropod natural enemies of the invasive brown marmorated stink bug in North America and Europe
    Abram, Paul K.; Hoelmer, Kim A.; Acebes-Doria, Angelita L.; Andrews, Heather; Beers, Elizabeth H.; Bergh, J. Christopher; Bessin, Ric; Biddinger, David J.; Botch, Paul; Buffington, Matthew L.; Cornelius, Mary L.; Costi, Elena; Delfosse, Ernest S.; Dieckhoff, Christine; Dobson, Rachelyn; Donais, Zachary; Grieshop, Matthew; Hamilton, George; Haye, Tim; Hedstrom, Christopher; Herlihy, Megan V.; Hoddle, Mark S.; Hooks, Cerruti R. R.; Jentsch, Peter; Joshi, Neelendra K.; Kuhar, Thomas P.; Lara, Jesus; Lee, Jana C.; Legrand, Ana; Leskey, Tracy C.; Lowenstein, David; Maistrello, Lara; Mathews, Clarissa R.; Milnes, Joshua M.; Morrison, William R. III; Nielsen, Anne L.; Ogburn, Emily C.; Pickett, Charles H.; Poley, Kristin; Pote, John; Radl, James; Shrewsbury, Paula M.; Talamas, Elijah; Tavella, Luciana; Walgenbach, James F.; Waterworth, Rebeccah; Weber, Donald C.; Welty, Celeste; Wiman, Nik G. (2017-09)
    Since the establishment of the brown marmorated stink bug, Halyomorpha halys (Stal) (Hemiptera: Pentatomidae) in North America and Europe, there has been a large, multi-group effort to characterize the composition and impact of the indigenous community of arthropod natural enemies attacking this invasive pest. In this review, we combine 98 indigenous natural enemy datasets spanning a variety of sampling methods, habitats, and geographic areas. To date, the vast majority of H. halys biological control research has focused on the egg stage, using sentinel egg masses to characterize indigenous parasitoid and predator communities and their contribution to H. halys egg mortality. Although egg parasitism and predation levels by indigenous natural enemies are low (typically <10% each) in most surveys, total egg mortality attributable to natural enemies can be higher (typically between 5 and 25%; up to 83%)-even though these values were likely underestimated in most cases because some mortality due to biological control was not recognized. In North America, where the most data are available, it appears that the relative prevalence of different indigenous parasitoid species varies among habitat types, particularly between crop and non-crop habitats. Predator species responsible for egg mortality are much less commonly identified, but appear to include a wide variety of generalist chewing and sucking predators. To date, studies of natural enemies attacking H. halys nymphs and adults are relatively rare. Based on our review, we identify a number of key research gaps and suggest several directions for future research.