Experimental Assessment of Interactions Between Larval
Coleomegilla maculata
and
Coccinella septempunctata
(Coleoptera: Coccinellidae) in Field Cages

Obrycki, John J.; Giles, K. L.; Ormord, Andrew M.

doi:10.1093/ee/27.5.1280

Cited by 40 publications

(31 citation statements)

References 16 publications

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“…Obrycki et al (1998a) reached a similar conclusion in field tests for C7 and Coleomegilla maculata (De Geer). Analysis of mean adult body sizes over time provided no indication that indigenous ladybird individuals became smaller (from increased scramble competition during larval stages) following the establishment of C7 in western North America (Evans 2000).…”

Section: Proposed Mechanismssupporting

confidence: 66%

Invasions by ladybugs, ladybirds, and other predatory beetles

2011

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Species of predatory Coleoptera have become abundant in new geographic regions recently, raising concerns for invaded ecosystems. We address this topic by focusing on invasive alien ladybird beetles (Coccinellidae; known also as ladybugs). Humans appear directly or indirectly responsible for all or most ladybird invasions. Factors hypothesized to have promoted ladybird invasions include genetic diversity (e.g., for polymorphism), phenotypic plasticity, adaptation and genetic shift, generalized diet and habitat preferences, flexible life history and reproduction, large body size, and release from enemies. Factors such as climate, habitat and prey availability, and biotic resistance may sometimes prevent or slow ladybird invasions. Indigenous species (e.g., herbivores) may suffer from invasions, and biological control programs may be affected. Species of indigenous ladybirds throughout the world are reported to have declined in abundance following ladybird invasions, with increased competition and/or intraguild predation most often hypothesized or inferred. Similar recent studies especially of ground beetles (Carabidae) also make clear the potential of invasive alien predatory Coleoptera to disrupt invaded natural and agricultural ecosystems.

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Section: Proposed Mechanismssupporting

confidence: 66%

Invasions by ladybugs, ladybirds, and other predatory beetles

2011

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“…Such different vertical positions may reduce potential interaction; in addition, in the fields the three species exploit a considerable array of different habitats (Angalet et al, 1979;Mareida et al, 1992;LaMana & Miller, 1996;Colunga-Garcia & Gage, 1998;Obrycki et al, 1998). According to our results and also to the fact that C. maculata is mainly encountered in the herbaceous stratum (Coderre & Tourneur, 1986), competition between H. axyridis and C. maculata should be less important than between H. axyridis and C. septempunc tata.…”

Section: Discussionsupporting

confidence: 53%

“…Previous experiments on larvae showed that interactions between C. septempunc tata and Coleomegilla maculata (DeGeer) did not signifi cantly affect the control of Myzus persicae (Sulzer) (Obrycki et al, 1998). However, no such studies have been conducted on adults.…”

Section: Introductionmentioning

confidence: 99%

“…Coleomegilla maculata is one of the most polyphagous coccinellid species (Hodek, 1996). The three coccinellid species, H. axyridis, C. septempunctata and C. maculata, share overlapping diets and have been recorded at the same time in several natural and agricultural eco systems (Angalet et al, 1979;Coderre & Tourneur, 1986;Elliot et al, 1996;LaMana & Miller, 1996;Obrycki et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Impact of the arrival of Harmonia axyridis on adults of Coccinella septempunctata and Coleomegilla maculata (Coleoptera: Coccinellidae)

Lucas¹,

Gagné²,

Coderre³

2002

Eur. J. Entomol.

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Abstract. The impact of the arrival of the exotic coccinellid Harmonia axyridis on the biological control and dispersion of apple mites and aphids, and on the vertical distribution of the established coccinellids Coccinella septempunctata and Coleomegilla macu lata have been studied. Assemblages of adults of the three coccinellid species were tested on apple saplings and on apple trees against Aphis citricola and Tetranychus urticae. The presence or substitution of adults of H. axyridis for adults of C. maculata or C. septempunctata did not reduce the predation impact on mite or aphid prey. H. axyridis was a more efficient predator of mites than was C. septempunctata and generated lower prey dispersal from host plants. Substitutions of adults of H. axyridis for those of C. maculata, and in some cases of C. septempunctata, resulted in greater reduction in number of aphids. On apple trees, the three cocci nellid species occurred at different heights. Neither C. maculata nor C. septempunctata modified their vertical distribution on apple tree over a 24 hour period in response to the presence of H. axyridis.

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“…We documented two possible mechanisms (competition and intraguild predation between coccinellid larvae) that could be involved. Cage studies conducted to determine if these interactions occur in the ®eld have shown that interspeci®c interactions between C. septempunctata and C. maculata larvae did not signi®cantly aect aphid densities (Ormord 1994;Obrycki and Ormord 1998).…”

Section: Discussionmentioning

confidence: 99%

Interactions between an introduced and indigenous coccinellid species at different prey densities

Obrycki¹,

1998

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Coccinella septempunctata L. (Coleoptera: Coccinellidae), a Palearctic coccinellid, has established and rapidly spread throughout the United States. This quantitative examination of larval interactions between C. septempunctata and Coleomegilla maculata (DeGeer) (Coleoptera: Coccinellidae), a Nearctic coccinellid, was conducted under controlled prey densities. Larvae of both coccinellid species are affected by a limited diet [one pea aphid per day Acyrthosiphon pisum (Harris) (Homoptera: Aphididae)] compared with an excess diet (>20 aphids per day). Larval survival decreased from 86 to 63% in C. maculata and from 84 to 33% in C. septempunctata; mean preimaginal developmental time increased from 20.6 to 26.7 days in C. maculata, and from 18.1 to 32.0 days in C. septempunctata. Additionally, on one aphid per day, mean adult weight was reduced from 12.39 to 9.79 mg in C. maculata, and from 39.57 to 14.44 mg in C. septempunctata. Interspecific interactions, favoring C. septempunctata over C. maculata at a␣low prey density (one aphid per day), take the form of␣reduced survival of C. maculata compared with C.␣septempunctata (14 versus 66%). Reduced survival of␣C. maculata may be the result of competition for aphids or intraguild predation by C. septempunctata on C.␣maculata. No interspecific interactions (measured as effects on larval survival, preimaginal developmental time, and adult weight) were observed between larvae of these two species at a high prey density (>20 aphids per predator per day).

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Experimental Assessment of Interactions Between Larval Coleomegilla maculata and Coccinella septempunctata (Coleoptera: Coccinellidae) in Field Cages

Cited by 40 publications

References 16 publications

Invasions by ladybugs, ladybirds, and other predatory beetles

Invasions by ladybugs, ladybirds, and other predatory beetles

Impact of the arrival of Harmonia axyridis on adults of Coccinella septempunctata and Coleomegilla maculata (Coleoptera: Coccinellidae)

Interactions between an introduced and indigenous coccinellid species at different prey densities

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