Chemical protection of Calvia quatuordecimguttata eggs against intraguild predation by the invasive ladybird Harmonia axyridis

Ware, Remy L.; Ramon‐Portugal, Felipe; Magro, Alexandra; Ducamp, Christine; Hemptinne, Jean‐Louis; Majerus, Michael E. N.

doi:10.1007/978-1-4020-6939-0_12

Cited by 16 publications

(17 citation statements)

References 26 publications

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“…The analysis of the survival times showed, as mentioned also in Ware et al (2008b), that feeding H. axyridis larvae with a coccinellid egg did not reduce survival below that of a starved larva. Although H. axyridis larvae are capable of completing development on interspecific eggs, this results in prolonged development and lower adult weight (Cottrell 2004).…”

Section: Discussionsupporting

confidence: 52%

“…Previous studies (Agarwala and Dixon 1991;Michaud 2002;Omkar Pervez and Gupta 2006) with no-choice and choice experiments have shown that coccinellid larvae tend to prefer preying on conspecific eggs rather than heterospecific ones, perhaps because of the presence of specific surface alkanes, and/or alkaloids in the conspecific eggs . Ware et al (2008b) also tested the palatability and susceptibility of five European species and H. axyridis by H. axyridis larvae-but not the reverse-and obtained similar results, conspecific H. axyridis eggs being the most palatable and susceptible and those of C. quatuordecimguttata being the least palatable and susceptible. Cannibalism of sibling eggs by hatching larvae is considered adaptive in aphidophagous guilds due to the mass and survival increases it can confer (Osawa 1992;Snyder et al 2000), and H. axyridis is not an exception.…”

Section: Discussionmentioning

confidence: 72%

“…listed the compounds found in the egg surface of A. bipunctata and C. septempunctata, which may be used to avoid cannibalism and IGP by coccinellid larvae. In addition, Ware et al (2008b) have shown that the eggs of C. quatuordecimguttata are protected by chemical deterrents that are found on the egg surface of the eggs. These mainly consist of a mixture of hydrocarbons in combination with an unidentified substance that is believed to belong to the acid group.…”

Section: Discussionmentioning

confidence: 99%

“…Recent laboratory studies (Ware and Majerus 2008;Ware et al 2008a) have examined IGP between H. axyridis and aphidophagous coccinellid species and provided evidence that H. axyridis larvae are often superior to larvae of other ladybird species in laboratory conditions. Other laboratory studies (Cottrell 2004;Ware et al 2008b) have further reported on predation of native European and North American coccinellid species eggs by H. axyridis larvae and adults. Cannibalism is a common phenomenon in coccinellids and the nutritional benefits that a larva can gain from consuming a conspecific egg can be substantial (Snyder et al 2000).…”

Section: Introductionmentioning

confidence: 94%

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Intraguild predation between the invasive ladybird Harmonia axyridis and non-target European coccinellid species

et al. 2012

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The coccinellid Harmonia axyridis (Pallas) has been used for augmentative and classical biological control in many environments. More recently it has invaded large parts of Europe and negative effects for native populations of aphidophagous coccinellids are beginning to emerge. Here we investigate intraguild predation (IGP) between H. axyridis and eleven native non-target European coccinellids, including less common species which have not been studied so far within this context of non-target effects. When first-instars of H. axyridis were paired with the native species, only Anatis ocellata (Linnaeus) and Calvia quatuordecimguttata (L.) were significantly superior to the former whereas H. axyridis was superior in three cases, i.e. against Aphidecta obliterata (L.), Coccinella septempunctata L. and Hippodamia variegata (Goeze). Non-significant results were obtained for all other pairings. Similar tests with the fourth larval instar revealed stronger IGP rates and H. axyridis was found to be superior in the interactions with Adalia bipunctata (L.), Adalia decempunctata (L.), A. obliterata, Calvia decemguttata (L.), C. quatuordecimguttata, C. septempunctata, H. variegata, Oenopia conglobata (L.) and Propylea quatuordecimpunctata (L.) whereas nonsignificant results were obtained for interactions with two other native species. Another experiment revealed that H. axyridis was able to prey more successfully upon egg of most native coccinellid species than vice versa. However, C. quatuordecimguttata eggs seem to be more protected against predation than those of the other species. Survival of first-instar H. axyridis was higher on conspecific eggs compared to eggs of any other species tested. Our results suggest that H. axyridis may become a threat to a wide range of native aphidophagous coccinellids sharing similar ecological niches except species showing high potential for chemical or physical protection.

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

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Intraguild predation between the invasive ladybird Harmonia axyridis and non-target European coccinellid species

et al. 2012

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“…quatuordecimguttata. This species may have thrived because the large and mobile larvae may resist intraguild predation by H. axyridis (Ware and Majerus 2008); this endurance is further supported by the chemical protection of its eggs (Ware et al 2008b). An example of spatial segregation was already addressed: C. septempunctata and P. quatuordecimpunctata successfully resist competition of H. axyridis because their breeding takes place mostly on crops and herbs Rejmanek 1982, Honek 1985) where the latter species is not abundant.…”

Section: Discussionmentioning

confidence: 99%