Journal article
Woolly Apple Aphid Generalist Predator Feeding Behavior Assessed through Video Observation in an Apple Orchard
Journal of insect behavior, Vol.32(2), pp.153-163
03/15/2019
Handle:
https://hdl.handle.net/2376/102725
Abstract
Generalist predators are considered effective biological control agents in many agroecosystems. However, characterizing the behavior of different generalist predator species in realistic field settings is difficult due to challenges associated with directly observing predation events in the field. Here we video recorded woolly apple aphid (Erisoma lanigerum) (Hemiptera: Aphididae) colonies to directly observe the feeding behavior of their generalist predators during the day and night. To observe European earwigs (Forficula auricularia) (Dermaptera: Forficulidae), which are thought to be key woolly apple aphid predators but were not present at our study location, we released earwigs into the study area. Across 1413 h of video recorded over 4 weeks, earwigs made the most attacks on woolly apple aphid colonies, but coccinellid larvae spent more total time attacking because their individual attacks were longer. Antagonistic interactions between predators were rare, and earwigs never antagonized other predators. However, ants commonly antagonized earwigs, and incidence of ant-earwig antagonistic interactions was negatively correlated with earwig-aphid attack rates. Overall, these results suggest that coccinellid larvae and earwigs differ in their feeding behavior in the field, and provide new evidence that ants may hinder aphid biological control by antagonizing earwigs.
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Details
- Title
- Woolly Apple Aphid Generalist Predator Feeding Behavior Assessed through Video Observation in an Apple Orchard
- Creators
- Robert Orpet - 0000 0001 2157 6568 grid.30064.31 Department of Entomology, Tree Fruit Research and Extension Center Washington State University 1100 N Western Ave Wenatchee WA 98801 USADavid Crowder - 0000 0001 2157 6568 grid.30064.31 Department of Entomology Washington State University 166 FSHN Building Pullman WA 99164 USAVincent Jones - 0000 0001 2157 6568 grid.30064.31 Department of Entomology, Tree Fruit Research and Extension Center Washington State University 1100 N Western Ave Wenatchee WA 98801 USA
- Publication Details
- Journal of insect behavior, Vol.32(2), pp.153-163
- Academic Unit
- WSU Wenatchee Tree Fruit REC; Entomology, Department of
- Publisher
- Springer US; New York
- Grant note
- 1014754; 1016563 / National Institute of Food and Agriculture (http://dx.doi.org/10.13039/100005825) 2016-38640-25383 / Western SARE (http://dx.doi.org/10.13039/100006104) Washington Tree Fruit Research Commission (http://dx.doi.org/10.13039/100012487)
- Identifiers
- 99900546509801842
- Language
- English
- Resource Type
- Journal article