Annals of the Entomological Society of America (2021) 114, 119-136

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Hongran Li, Baoping Li, Gábor L. Lövei, Timothy J. Kring and John J. Obrycki (2021)
Interactions among native and non-native predatory Coccinellidae influence biological control and biodiversity
Annals of the Entomological Society of America 114 (2), 119-136
Abstract: Over the past 30 yr, multiple species of predatory Coccinellidae, prominently Coccinella septempunctata L. and Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) have spread to new continents, influencing biodiversity and biological control. Here we review the mechanisms underlying these ecological interactions, focusing on multi-year field studies of native and non-native coccinellids and those using molecular and quantitative ecological methods. Field data from Asia show that H. axyridis, C. septempunctata, and Propylea japonica (Thunberg) (Coleoptera: Coccinellidae) are regularly among the most abundant predatory species but their rank varies by habitat. Studies of these species in their native Asian range, primarily related to their range in mainland China, document different patterns of seasonal abundance, species specific associations with prey, and habitat separation. Intraguild predation is well documented both in Asia and in newly invaded areas, and H. axyridis benefits most from this interaction. Harmonia axyridis also seems to rely more on cannibalism in times of prey scarcity than other species, and relatively sparse data indicate a lower predation pressure on it from natural enemies of coccinellids. Declines in the abundance of native coccinellids following the spread and increase of non-native species, documented in several multi-year studies on several continents, is a major concern for native biodiversity and the persistence of native coccinellid species. We suggest that future studies focus more attention on the community ecology of these invasive species in their native habitats.
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Database assignments for author(s): Baoping Li, Gábor L. Lövei, Timothy J. Kring

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
non-target effects/fate in environm.

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Adalia bipunctata (predator) Japan
Coccinella septempunctata (predator)
Harmonia axyridis (predator)
Cryptolaemus montrouzieri (predator) China (south)
Delphastus catalinae (predator) China (south)
Propylea japonica (predator)
Rodolia cardinalis (predator) China (south)
Rodolia cardinalis (predator) Japan
Rodolia cardinalis (predator) Taiwan
Olla v-nigrum (predator) Japan