Applied Entomology and Zoology (2004) 39, 217-219

Atsushi Mochizuki and Takayuki Mitsunaga (2004)
Non-target impact assessment of the introduced green lacewing, Chrysoperla carnea (Stephens) (Neuroptera Chrysopidae) on the indigenous sibling species, C. nipponensis (Okamoto) through interspecific predation
Applied Entomology and Zoology 39 (2), 217-219
Abstract: As a part of a risk assessment of the non-target effect of the introduced green lacewing on native ecosystem, we performed a laboratory experiment to characterize the symmetry of the interspecific predation between the introduced green lacewing, Chrysoperla carnea and the native sibling species, C. nipponensis among different stages. The elder and larger larvae always ate the younger and smaller individuals, regardless of species. When the same instar and similar sized larvae were paired, almost equal predation rates between the two species was observed. Our results suggest that size was the most important factor to determine the symmetry of the interspecific predation between C. carnea and C. nipponensis. Populations of C. nipponensis will not be decreased by interspecific predation with C. carnea without extreme mass releases of C. carnea in a small arena.
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Database assignments for author(s): Atsushi Mochizuki, Takayuki Mitsunaga

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Chrysoperla carnea (predator)			Japan
Chrysoperla nipponensis (predator)			Japan