Agricultural and Forest Entomology (2004) 6, 21-24

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Satoru Sato and Anthony F.G. Dixon (2004)
Effect of intraguild predation on the survival and development of three species of aphidophagous ladybirds: consequences for invasive species
Agricultural and Forest Entomology 6 (1), 21-24
Abstract: 1 Survival and development of hatchling larvae of three aphidophagous ladybirds (Coleoptera: Coccinellidae), Harmonia axyridis Pallas, Coccinella septempunctata brucki Mulsant and Adalia bipunctata Linnaeus, when fed their own and the other species eggs were recorded.
2 In all three species, the larvae survived when fed conspecific eggs.
3 The percentage of larvae of H. axyridis that survived decreased to 35% and 85% when fed eggs of A. bipunctata and C. s. brucki, respectively. All the larvae of A. bipunctata and C. s. brucki died after eating eggs of H. axyridis. None of the larvae of C. s. brucki died after eating eggs of A. bipunctata, whereas 46% of those of A. bipunctata died after eating eggs of C. s. brucki.
4 In general, larvae were reluctant to eat the eggs of other species. However, larvae of C. s. brucki showed less reluctance than H. axyridis to eat the eggs of A. bipunctata.
5 The consequence of this for invasive species of ladybird is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Satoru Sato, Anthony F.G. Dixon

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

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Adalia bipunctata (predator)
Coccinella septempunctata (predator)
Harmonia axyridis (predator)