Influence of host plant on susceptibility of the aphid Acyrthosiphon pisum (Hemiptera: Aphididae) to the fungal pathogen Pandora neoaphidis (Zygomycetes: Entomophthorales)

Tkaczuk, C.; Shah, P. A.; Clark, S. J.; Pell, J. K.

doi:10.14411/eje.2007.032

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…For example, Shishehbor and Brennan (1995) showed that the highest level of parasitism of Trialeurodes ricini by Encarsia formosa, occurred on aubergine, while the lowest was found on pumpkin and potato. Also, Tkaczuk et al (2007) demonstrated that virulence of Pandora neoaphidis against Acyrthosiphon pisum was greater on dwarf bean than on field bean, pea or lucerne. Therefore, more studies on this aspect of the host plant species-M. persicae-A.colemani-L. muscarium system are necessary to improve overal control efficacy of M. persicae.…”

Section: Discussionmentioning

confidence: 98%

Combining entomopathogenic fungi and parasitoids to control the green peach aphid Myzus persicae

Mohammed

Hatcher

2017

Biological Control

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The green peach aphid, Myzus persicae, is a major insect pest worldwide. The parasitoid Aphidius colemani and more recently, the entomopathogenic fungus Lecanicillium muscarium strain KV01 (Mycotal ® ), have been considered as potential biological control against M. persicae.However, no studies have been carried out on the interaction between L. muscarium and A. colemani against M. persicae. This study, therefore, was conducted to determine the most effective timing of application of this fungal strain in combination with either naturally occurring or introduced parasitoids to control Myzus persicae in the laboratory and controlled field environments. In the laboratory, mummification, emergence of parasitoid adults from mummified aphids and female sex ratio of the emerging adults, were not affected when the fungus was applied 6 or 7 days after the parasitoids were added, compared with treatment with A. colemani only. Although a 40 % reduction in the female sex ratio of emerging parasitoid adults was recorded when fungi applied 3 days after the parasitoids were added, fungal application had no significant effect on longevity and fecundity of the female A. colemani F1 generation that emerged from fungus-treated aphids. In the semi-field experiment, the mean number of aphids per leaf was significantly lower in the treatment involving A. colemani in combination with L.

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Section: Discussionmentioning

confidence: 98%

Combining entomopathogenic fungi and parasitoids to control the green peach aphid Myzus persicae

Mohammed

Hatcher

2017

Biological Control

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“…However, previous studies have also shown small decreases in susceptibility (and therefore increased LC 50 values) to P. neoaphidis when the host aphid is transferred from an optimal to an alternative host plant. For example, A. pisum cultured on bean (optimal host plant) was slightly more susceptible to P. neoaphidis than when cultured on the suboptimal host Pisum sativum (L.) (Tkaczuk et al 2007). Therefore, whilst the overall estimates of LC 50 obtained in this study were not significantly different, these values, along with the mortality curves which show that the concentration of conidia required to kill M. carnosum was consistently lower for aphids Fibre nettles as a resource for aphids and their enemies 221 cultured on the Standard nettle than on Clone 2, may indicate subtle differences in the suitability of the two nettle varieties as host plants for M. carnosum.…”

Section: Discussionmentioning

confidence: 99%

Potential value of the fibre nettle Urtica dioica as a resource for the nettle aphid Microlophium carnosum and its insect and fungal natural enemies

et al. 2010

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The perennial stinging nettle (Urtica dioica L.) is a wild plant that provides resources for aphid natural enemies and can therefore benefit crop protection. Stinging nettles producing approximately three times more fibre than Standard nettles are under commercial development for fibre production. Here we assess the relative value of Austrian Clone 2, a high fibre nettle variety, as a resource for the nettle aphid Microlophium carnosum (Buckton) and its associated natural enemies. The intrinsic rate of increase of M. carnosum cultured on Clone 2 was not different to that on a Standard nettle nor was there an effect of nettle variety on the susceptibility of this aphid to the entomopathogenic fungus Pandora neoaphidis (Remaudière and Hennebert) Humber. The development time of the aphidophagous predator Chrysoperla carnea (Stephens) was not affected by the nettle variety on which M. carnosum was cultured whilst the parasitoid Aphidius ervi (Haliday) fed on honeydew produced by M. carnosum infesting both varieties of nettle. Fibre nettle Clone 2 is therefore able to support non-pest aphids and their natural enemies and, if grown widely in the future, may be useful within conservation biological control and a tool within integrated pest management.

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“…Plants can positively or negatively affect the performance of natural enemies of herbivorous insects by controlling the production of chemicals (e.g., volatiles, secondary compounds) and resources (e.g., nectar, pollen) and/or by modifying their morphology (e.g., trichomes, domatia) (Tkaczuk et al 2007). The interactions between plants and predators/parasitoids of insect pests have been thoroughly studied, but there are still few reports on the interactions between plants and other groups of insect natural enemies, such as entomopathogenic fungi.…”

Section: Introductionmentioning

confidence: 99%

Plant-mediated effects on entomopathogenic fungi: how the olive tree influences fungal enemies of the olive moth, Prays oleae

et al. 2014

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The community of entomopathogenic fungi associated with the olive moth Prays oleae is specific for each generation of this insect. The entomopathogen Beauveria bassiana is almost exclusive to the phyllophagous or leaf generation, whereas Paecilomyces formosa mainly occurs in the carpophagous or fruit generation. The main objective of this work was to evaluate olive plant-mediated effects on the development (germination, growth, sporulation and spore viability) of both entomopathogens. While B. bassiana was strongly inhibited by olives, P. formosa development was more restricted by leaves. These inhibitory effects were caused by both volatile and diffusible compounds produced by olives and leaves. Specifically, the effects of two leaf volatile compounds, (Z)-3-hexen-1-ol and (Z)-3-hexenyl acetate were studied. The results suggest that olive plant organs affect entomopathogens by controlling their abundance and function, which may partly explain the occurrence of a fungal species in a specific P. oleae generation.

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Influence of host plant on susceptibility of the aphid Acyrthosiphon pisum (Hemiptera: Aphididae) to the fungal pathogen Pandora neoaphidis (Zygomycetes: Entomophthorales)

Cited by 4 publications

References 44 publications

Combining entomopathogenic fungi and parasitoids to control the green peach aphid Myzus persicae

Combining entomopathogenic fungi and parasitoids to control the green peach aphid Myzus persicae

Potential value of the fibre nettle Urtica dioica as a resource for the nettle aphid Microlophium carnosum and its insect and fungal natural enemies

Plant-mediated effects on entomopathogenic fungi: how the olive tree influences fungal enemies of the olive moth, Prays oleae

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