2011
DOI: 10.1111/j.1570-7458.2010.01090.x
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Intraguild predation on the parasitoid Aphidius ervi by the generalist predator Harmonia axyridis: the threat and its avoidance

Abstract: Interactions between natural enemies can be crucial for determining their overall control of pest species, yet the mechanisms that govern such interactions are often poorly understood. The risk of negative effects such as intraguild predation and the possibility of mitigating such risks are important components for ultimately determining the compatibility of biological control agents. We performed a group of experiments to determine whether the coccinellid Harmonia axyridis Pallas (Coleoptera: Coccinellidae) p… Show more

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Cited by 48 publications
(42 citation statements)
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“…In addition, some Eulophidae parasitoids are known to detect olfactory stimuli from conspecific or heterospecific parasitoids (e.g., SilvaTorres et al 2005) and it is known that larval parasitoids are able to detect odors, visual cues, and vibrations from their hosts, but it is unknown whether they are able to use these types of cues to detect competitors (Sugimoto et al 1988;Fischer et al 2001). Only chemical cues have been shown to be used by female parasitoids to avoid intraguild predation risks for their offspring (Nakashima et al 2004;Meisner et al 2011). Based on the abovementioned knowledge, it seems that (i) considering the complexity of the host location for leaf miner parasitoids, these species are capable of detecting many cues, but possibly only in a very specific way, and (ii) it is probable that M. pygmaeus shares some cues (i.e., feces composition, semiochemicals, visual shape, etc.)…”
Section: Discussionmentioning
confidence: 99%
“…In addition, some Eulophidae parasitoids are known to detect olfactory stimuli from conspecific or heterospecific parasitoids (e.g., SilvaTorres et al 2005) and it is known that larval parasitoids are able to detect odors, visual cues, and vibrations from their hosts, but it is unknown whether they are able to use these types of cues to detect competitors (Sugimoto et al 1988;Fischer et al 2001). Only chemical cues have been shown to be used by female parasitoids to avoid intraguild predation risks for their offspring (Nakashima et al 2004;Meisner et al 2011). Based on the abovementioned knowledge, it seems that (i) considering the complexity of the host location for leaf miner parasitoids, these species are capable of detecting many cues, but possibly only in a very specific way, and (ii) it is probable that M. pygmaeus shares some cues (i.e., feces composition, semiochemicals, visual shape, etc.)…”
Section: Discussionmentioning
confidence: 99%
“…The current work suggests that this may be further supported by female wasp avoidance of hoverflies in the absence of floral cues (e.g. when host-searching), with similar avoidance of foot-print chemicals from Harmonia axyridis Pallas already reported in female A. ervi during oviposition (Meisner et al, 2011). Assuming that hoverfly species are relatively unaffected by wasp competition based on their larger size and increased mobility (Wäckers and van Rijn, 2012), this suggests that both groups could be simultaneously promoted with appropriate habitat management schemes (George et al, 2010;Wäckers and van Rijn, 2012).…”
Section: Discussionmentioning
confidence: 63%
“…It includes both oviposition, and the insertion of ovipositor without oviposition (pseudoparasitism), two possibilities that we could not distinguish in this study. Previous laboratory study demonstrated that 25% of the aphid parasitoid, A. ervi attacks are pseudoparasitism (Ives et al ., ). Walking: the parasitoid moves in aphid patch. Resting: the parasitoid spends time motionless. The host patch residence time was also measured, which includes the time of all behavioral events of parasitoid in aphid patches (aphid encounter, aphid attack, walking, and resting) a standard metric used to quantify the effect of larval tracks presence on parasitoids in other systems (Meyhöfer & Klug, ; Nakashima & Senoo, ; Nakashima et al ., ; Bilu et al ., ; Meisner et al ., ).…”
Section: Methodsmentioning
confidence: 97%