Intraguild predation between the aphidophagous ladybird beetles Harmonia axyridis and Coccinella undecimpunctata (Coleoptera: Coccinellidae): The role of intra and extraguild prey densities

Nóia, Marlene; Borges, Isabel; Soares, António O.

doi:10.1016/j.biocontrol.2008.03.004

Cited by 52 publications

(38 citation statements)

References 26 publications

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“…Studies have shown that in the presence of another predator(s) individual predators often consume less prey (Noia et al, 2008). The antagonistic effects recorded in the present study are in accordance with many earlier findings (Kaplan & Eubanks, 2002;Denno & Finke, 2006;Omkar et al, 2014).…”

Section: Discussionsupporting

confidence: 93%

Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae)

Kumar¹,

Mishra²,

Omkar³

2014

Eur. J. Entomol.

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Abstract. In the present study, the predatory interactions between two locally abundant large lady beetles, Coccinella septempunctata L. (C7) and Coccinella transversalis F. (Ct) provided with either an extremely scarce, scarce, sub-optimal, optimal or abundant supply of the pea aphid, Acyrthosiphon pisum (Harris) were investigated. For this, three 2-predator combinations (conspecific C7 + C7 and Ct + Ct, and heterospecific C7 + Ct) of 10-day-old unmated adult females were used. The relationships between the proportion of prey consumed by the predators in the conspecific and heterospecific combinations when provided with five different abundances of prey were similar in consisting of a decelerating (type II) functional response when provided with an extremely scarce to optimal supply of prey, followed by an accelerating (type III) functional response when provided with an optimal to abundant supply of prey. It is likely that the modified type II functional response recorded in the present study was a consequence of using a small experimental arena (Petri dish). The multiplicative risk model analysis revealed that the predators interacted antagonistically except in the C7 + C7 combination provided with an extremely scarce supply of prey where the predators had an additive effect. The predators in the heterospecific C7 + Ct combination consumed fewer aphids when provided with an extremely scarce, scarce, sub-optimal or optimal supply of prey prey than the predators in conspecific C7 + C7 combination but a similarly high number when provided with an abundant supply of prey. In addition, the efficiency of converting prey biomass into their own biomass was higher in the heterospecific C7 + Ct than in the conspecific C7 + C7 or Ct + Ct combinations at all prey densities. Although the conversion efficiency of the predators in the conspecific and heterospecific combinations provided with an extremely scarce supply of prey was the highest recorded, their growth rate was the lowest. In contrast, both the conversion efficiency and growth rate of the predators in the three combinations were highest when provided with an abundant supply of prey. It may, therefore, be concluded that when the predators in the combinations occupy similar ecological niches, they will probably consume less prey than they require when prey is both scarce and abundant because the predators interact antagonistically.

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Section: Discussionsupporting

confidence: 93%

Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae)

Kumar¹,

Mishra²,

Omkar³

2014

Eur. J. Entomol.

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“…This result indicates that whether or not prey dilution occurred at high aphid densities, density-dependent predator aggregation to the experimental plants was strong enough to overcome such an effect. In contrast to these results, laboratory and mesocosm experiments have found that IGP decreases with increasing densities of the shared resource (Johansson 1993;Lucas et al 1998;Obrycki et al 1998;Schellhorn and Andow 1999b;Kajita et al 2000;Hindayana et al 2001;Burgio et al 2002;de Clercq et al 2003;Rickers et al 2006;Nóia et al 2008). It is possible that the results observed in these micro-and mesocosm experiments would not be observed in similar experiments conducted in the open field due to predator aggregation.…”

Section: Discussioncontrasting

confidence: 65%

“…Most studies that examine the effect of shared resource density on IGP interactions have found that higher shared resource density reduced IGP of the intraguild prey. The most common explanation for this result is a prey dilution effect (Lucas et al 1998;Obrycki et al 1998;Schellhorn and Andow 1999b;Kajita et al 2000;Hindayana et al 2001;Burgio et al 2002;de Clercq et al 2003;Rickers et al 2006;Nóia et al 2008). In the few studies where IGP remained constant despite increasing shared resource densities, the lack of a density effect was explained by specific foraging strategies of the intraguild predator and/or prey that result in a higher likelihood that intraguild predators and prey encounter one another rather than the shared resource (Lucas et al 1998;Hindayana et al 2001).…”

Section: Introductionmentioning

confidence: 78%

Density-dependent intraguild predation of an aphid parasitoid

Chacón

Heimpel

2010

Oecologia

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A growing body of research has examined the effect of shared resource density on intraguild predation (IGP) over relatively short time frames. Most of this work has led to the conclusion that when the shared resource density is high, the strength of IGP should be lower, due to prey dilution. However, experiments addressing this topic have been done using micro- or mesocosms that excluded the possibility of intraguild predator aggregation. We examined the effect of shared resource density on IGP of an aphid parasitoid in an open field setting where the effects of prey dilution and predator aggregation could occur simultaneously. We brought potted soybean plants with 2, 20, or 200 soybean aphids (Aphis glycines) and 20 pupae ('mummies') of the soybean aphid parasitoid Binodoxys communis into soybean fields in Minnesota, USA. We monitored predator aggregation onto the potted plants, predation of parasitoid mummies, and successful adult emergence of B. communis. We found that predator aggregation was higher at the higher aphid densities on our experimental plants and that this coincided with lower adult emergence of B. communis, indicating that even if a prey dilution effect occurred in our study, it was overcome by short-term predator aggregation. Our results suggest that the effect of shared resource density on IGP may be more nuanced in a field setting than in microcosms due to predator aggregation.

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“…Laboratory studies comparing C7 and H. axyridis larval interactions with indigenous ladybird species revealed H. axyridis to be much the greater threat to indigenous species in North America as an intraguild predator (Yasuda et al 2004;Snyder et al 2004). Laboratory studies in Europe also demonstrated the strong tendency of H. axyridis to prey on larvae of indigenous ladybirds (e.g., Burgio et al 2002;Sato and Dixon 2004;Félix and Soares 2004;Nóia et al 2008;Ware and Majerus 2008). In particular, the large size and aggressive behavior of H. axyridis as well as its physical and chemical defenses (Slogget et al 2011) make it a strong top predator among ladybirds.…”

Section: Proposed Mechanismsmentioning

confidence: 95%

Invasions by ladybugs, ladybirds, and other predatory beetles

2011

Self Cite

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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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Intraguild predation between the aphidophagous ladybird beetles Harmonia axyridis and Coccinella undecimpunctata (Coleoptera: Coccinellidae): The role of intra and extraguild prey densities

Cited by 52 publications

References 26 publications

Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae)

Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae)

Density-dependent intraguild predation of an aphid parasitoid

Invasions by ladybugs, ladybirds, and other predatory beetles

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