Observations on the Behaviour and Mortality in Coccinellidae Before Dispersal From the Egg Shells.

Banks, C. J.

doi:10.1111/j.1365-3032.1956.tb00207.x

Cited by 29 publications

(13 citation statements)

References 3 publications

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“…Banks 1956, Dixon 1959, Brown 1972, Nakamura et al 2006 ). Although early hatching larvae do not attack each other on the egg cluster (Brown 1972, Hodek 1996, they cannibalize late hatching and infertile eggs before dispersing (e.g.…”

Section: Sibling E Gg C Annibalismmentioning

confidence: 99%

“…Thus, large numbers of adults often occur near colonies of prey such as aphids (e.g. Banks 1956 ), mites (e.g. Hull et al 1976 ) and chrysomelid beetles (e.g.…”

Section: Temporal and S Patial P Atternsmentioning

confidence: 99%

“…First instar Cheilomenes lunata moulted to the second instar after eating only two eggs (Brown 1972 ). This was achieved in A. bipunctata (Banks 1956 ), and in Har. axyridis (Osawa 1992b ) after eating three eggs.…”

Section: Oviposition D Eterrencementioning

confidence: 99%

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Hodek

Evans

2012

Ecology and Behaviour of the Ladybird Beetles (Coccinellidae)

154

129

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Section: Sibling E Gg C Annibalismmentioning

confidence: 99%

“…Thus, large numbers of adults often occur near colonies of prey such as aphids (e.g. Banks 1956 ), mites (e.g. Hull et al 1976 ) and chrysomelid beetles (e.g.…”

Section: Temporal and S Patial P Atternsmentioning

confidence: 99%

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Food Relationships

Hodek

Evans

2012

Ecology and Behaviour of the Ladybird Beetles (Coccinellidae)

154

129

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“…That the larval presence signals danger of egg cannibalism (Banks, 1956;Mills, 1982;Majerus, 1994;Dixon, 2000;Cottrell, 2004) is well established and may cause females to reduce or withhold oviposition at sites with larvae (Agarwala et al, 2003). Restlessness or the tendency to fly away from the area in females may also be a reason for the reduction in egg laying under field conditions (Hemptinne et al, 1992) but not in the laboratory.…”

Section: Discussionmentioning

confidence: 99%

Effect of presence and semiochemicals of conspecific stages on oviposition by ladybirds (Coleoptera: Coccinellidae)

Mishra¹,

Singh²,

Shahid³

et al. 2012

Eur. J. Entomol.

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Abstract.Reduced oviposition by ladybirds in the presence of tracks of fourth instar larvae owing to the presence of oviposition deterring pheromones is well established across many genera. However, deterrence, if any, by other life stages has not been well investigated, in particular the effect of conspecific presence. The present study investigates the effects of conspecific presence and semiochemicals of conspecific life stages (eggs, fourth instar larvae, pupae, adult males and females) on oviposition by five ladybird (Coleoptera: Coccinellidae) species, viz. Coccinella septempunctata, Coccinella transversalis, Cheilomenes sexmaculata, Propylea dissecta and Anegleis cardoni. Results reveal that the presence of life stages inhibits oviposition and the inhibition is densitydependent, although the degree of inhibition is species-specific. Surface semiochemicals of eggs and larval and adult tracks also show density-dependent inhibitory effects. Moreover, the semiochemicals in tracks (oviposition deterring pheromones) and egg surface semiochemicals are not similar, indicating semiochemical parsimony. Of all species tested, C. transversalis and C. septempunctata were the most and the least responsive to both conspecific presence and semiochemicals, respectively.

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“…Insect eggs are immobile and, in the absence of any parental protection, constitute an easy meal for a range of oophagous predators (Blum and Hilker 2002), in addition to being a target for various parasitoids and pathogens. Amongst aphidophagous coccinellids, the commonest cause of mortality at the egg stage is predation by conspecific or heterospecific larvae and adults (Banks 1956;Mills 1982;Majerus 1994;Dixon 2000;Cottrell 2004). Cannibalism of eggs by hatching larvae is known to dramatically increase survival of the latter (Pienkowski 1965;Majerus and Majerus 1997;Snyder et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2007

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Intraspecific and interspecific predation of eggs is a well documented phenomenon amongst aphidophagous coccinellids. The invasive species Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) is known to be a top intraguild predator and reported to attack the eggs of many coccinellid species both in a laboratory setting and in the wild. A previous laboratory study highlighted that while many species' eggs were highly palatable to H. axyridis, the eggs of Calvia quatuordecimguttata (Linnaeus) (Coleoptera: Coccinellidae) appeared to be extremely well protected from attack. Here we present the results of behavioural experiments testing the hypothesis that substances on the egg surface are responsible for this protection, and report preliminary results of GC-MS analysis of these compounds. When the coatings of C. quatuordecimguttata eggs were removed using hexane, they became significantly more susceptible to predation by neonate H. axyridis larvae. However, their overall palatability was not affected, in that complete consumption was never or rarely observed. This suggests that the surface compounds are a true indicator of unpalatability in this species. The effect of hexane-washing on already palatable conspecific eggs was also analysed but had no significant effect on the susceptibility of eggs to cannibalism. We conclude that the eggs of at least one European species are effectively protected by surface deterrents from intraguild predation by H. axyridis. This effect might be due to both the diversity and abundance of hydrocarbons present within the egg coating, the presence of alkenes and/or the presence of patches of a red substance on the eggs' surface, which is thought to belong to the acid group. In conjunction with data on the susceptibility of other immature stages of C. quatuordecimguttata, this finding may indicate a decreased risk of the species falling victim to invasive H. axyridis, despite their coincident habitat ranges.

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Observations on the Behaviour and Mortality in Coccinellidae Before Dispersal From the Egg Shells.

Cited by 29 publications

References 3 publications

Food Relationships

Food Relationships

Effect of presence and semiochemicals of conspecific stages on oviposition by ladybirds (Coleoptera: Coccinellidae)

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

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