Pest Management Science (2017) 73, 2244-2251

Selected publication you are invited to contribute to the discussion section (above tab)

José P.F. Bentivenha, Débora G. Montezano, Thomas E. Hunt, Edson L.L. Baldin, Julie A. Peterson, Vinícius S. Victor, Luiz E.R. Pannuti, Ana M. Vélez and Silvana V. Paula-Moraes (2017)
Intraguild interactions and behavior of Spodoptera frugiperda and Helicoverpa spp. on maize
Pest Management Science 73 (11), 2244-2251
Abstract:
BACKGROUND
Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is one of the major pests of maize and is in the same feeding guild as the noctuid pests Helicoverpa zea (Boddie) and Helicoverpa armigera (Hübner), recently reported in South and North America. The intraguild interactions of these species were assessed in laboratory and field conditions by determining the survival of larvae in interaction scenarios with non-Bt maize silks and ears. Moreover, a video tracking system was utilized to evaluate behavioral parameters during larval interactions in scenarios with or without food.
RESULTS
In intraguild interactions, S. frugiperda had greater survival (55–100%) when competing with Helicoverpa spp. in scenarios where larvae were the same instar or when they were larger (fourth versus second) than their competitor. Frequency and time in food of S. frugiperda larvae were negatively influenced by interactions. Larvae of S. frugiperda moved shorter distances (less than 183.03 cm) compared with H. zea.
CONCLUSION
Overall, S. frugiperda had a competitive advantage over Helicoverpa spp. This study provides significant information regarding noctuid behavior and larval survival during intraguild interactions, which may impact pest prevalence and population dynamics, thereby affecting integrated pest management and insect resistance management of these species in maize.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Database assignments for author(s): José P.F. Bentivenha, Thomas E. Hunt, Edson Luiz Lopes Baldin, Débora G. Montezano

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
general biology - morphology - evolution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera	Maize/corn (Zea mays)
	Helicoverpa zea	Maize/corn (Zea mays)
	Spodoptera frugiperda	Maize/corn (Zea mays)