NDLI: Biological pest control by investing crops in pests

Content Provider	Springer Nature Link
Author	Ito, Hiroshi C. Kondo, Natsuko I.
Copyright Year	2012
Abstract	We propose a biological pest control system that invests part of a crop in feeding a pest in a cage. The fed pest maintains a predator that attacks the pest in the target area (i.e., the area for storing or growing crops). The fed pest cannot leave the cage nor the target pest cannot enter the cage. The predator, however, can freely attack both the fed and target pests in the target area. By introducing a refuge in the cage against the predator for the fed pest, the fed pest and predator may be stably sustained. In this study, we analyzed the potential performance of this system by modeling the population dynamics of the target pest, fed pest, and predator as differential equations. First, we show analytically that the target pest can be suppressed at extremely low abundance by adjusting both refuge efficiency and crop investment. Second, we show numerically that crop damage by the pest may be effectively suppressed by investing only small amounts of the crop. Third, we show numerically that the magnitude of required crop investment can be estimated by an index comprising of the predator’s searching cost for prey and the relative growth efficiency of the predator with respect to the pest. Even if the system structure is changed or its population dynamics is modeled based on host–parasitoid interactions, crop damage can be suppressed effectively by small amounts of crop investment.
Starting Page	557
Ending Page	571
Page Count	15
File Format	PDF
ISSN	14383896
Journal	Population Ecology
Volume Number	54
Issue Number	4
e-ISSN	1438390X
Language	English
Publisher	Springer Japan
Publisher Date	2012-05-26
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Apparent competition Beddington–DeAngelis Host–parasitoid Predator–prey Refuge Zoology Ecology Forestry Behavioural Sciences Evolutionary Biology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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