Translator Disclaimer
1 June 2011 Association of Ovavesicula popilliae (Microsporida: Ovavesiculidae) with Winter Mortality of Larvae and Reduced Fecundity of FemaleJapanese Beetles (Coleoptera: Scarabaeidae)
David R. Smitley, Young-Ki Jo, Ian Hudson
Author Affiliations +
Abstract

Populations of Japanese beetle at sites in Michigan where Ovavesicula popilliae (Andreadis) was introduced in 1999 and 2000 were compared with nearby control sites from fall of 2005 through spring of 2008. Percent infection by O. popilliae and winter mortality of Japanese beetle were determined by sampling larvae in October and April from 12 golf holes on six courses in southeast Michigan and eight holes on four courses in southwest Michigan. Adult Japanese beetles were also collected from these golf courses in July and August of 2007 to determine the impact of O. popilliae-infection on egg development in females. In southeast Michigan, O. popilliae appeared to spread rapidly from the 100 m2 plots where it was previously introduced to surrounding golf course holes between 2000 and 2006. However, data from southwest Michigan suggests that O. popilliae had already been introduced into the area. Regression analysis of data from all 20 golf course holes gives a significant relationship between percent infection of larvae with O. popilliae and winter mortality of Japanese beetle. Mean winter mortality of larvae around golf course holes where <10% were infected with O. popilliae was 24.7% compared with 41.7% mortality where 10–30% were infected, and 72.0% mortality where >30% were infected. Females infected with O. popilliae contained 50% fewer mature eggs than uninfected females. In addition, females from golf courses where all of the fairways and roughs were treated annually with imidacloprid contained 48% fewer mature eggs than females from golf courses where insecticides were only used on the fairways or not at all.

© 2011 Entomological Society of America
David R. Smitley, Young-Ki Jo, and Ian Hudson "Association of Ovavesicula popilliae (Microsporida: Ovavesiculidae) with Winter Mortality of Larvae and Reduced Fecundity of FemaleJapanese Beetles (Coleoptera: Scarabaeidae)," Environmental Entomology 40(3), 589-596, (1 June 2011). https://doi.org/10.1603/EN10241
Received: 24 September 2010; Accepted: 1 February 2011; Published: 1 June 2011
JOURNAL ARTICLE
8 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top