New Biological Control Agents Of Soybean aphid (Aphis glycines) Using Native and Previously Introduced Hymenopterous Parasitoids and Dipteran Predators
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Authors
Kaiser, Matthew E.
Issue Date
2003
Type
Thesis
Language
en_US
Keywords
Alternative Title
Abstract
Soybean aphid (Aphis glycines, Hemiptera: Aphididae) is an invasive species
that originates from China and was first sighted in the United States in July of 2000
(DiFonzo 2002). Severe damage to soybean plants (Glycine max) was soon
documented. Previous to this invasion there were few aphids feeding on soybean.
While other infested states are introducing exotic natural enemies in a biological
control effort, none have been released in Michigan. This study sets out to explore the
possibility that native and previously introduced natural enemies of aphids already
established in the area may be able to adapt to the invasive soybean aphid. Our
objective is to detect the presence of resident parasitoids and predatory flies that have
adapted to utilize soybean aphid. We focus primarily on parasitic wasps and predatory
flies.
Soybean aphid natural enemies were sampled twice, once in June and once in
August. 80 pots of soybean infested with SBA were placed in different treatments in a
field setting at KBS LTER main experimental site in 20 sets of four. These pots were
exposed to parasitoids and predatory flies of the soybean aphid for a 3 day period. The
parasitoids oviposited in aphids and the flies oviposited on aphid-infested soybean
foliage of the pots. The soybean plants were then clipped and placed in emergence
canisters to trap emerging adult parasitoids and predatory flies.
We have detected a diverse assemblage of native or previously introduced
natural enemies attacking soybean aphid. Possibilities for their use in the biological
control of the invasive soybean aphid are discussed.
Description
vi, 35 p.
Citation
Publisher
Kalamazoo College
License
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