Control of cereal aphids in winter wheat by natural enemies: aphid‐specific predators, parasitoids and pathogenic fungi

Chambers, R. J.; Sunderland, K. D.; Stacey, D. L.; Wyatt, I. J.

doi:10.1111/j.1744-7348.1986.tb07644.x

Cited by 93 publications

(46 citation statements)

References 13 publications

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“…Already in 1985 and 1986, Chambers et al (Chambers et al, 1985(Chambers et al, , 1986 reported the economic importance of hoverfly species as aphidophagous biological control agents. Other studies highlighted the role of volatile compounds -coming from aphid-damaged plants and from aphids themselves -as semiochemical cues in the foraging process of female Syrphidae (Almohamad et al, 2006;Harmel et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

Heuskin

Lorge

Leroy

et al. 2012

JEE

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E-β-Farnesene, the alarm pheromone of many aphid species, and E-β-caryophyllene are considered as two sesquiterpenes attractive for aphid predators, among which Syrphidae species. Both compounds were formulated in alginate gel beads as slow-release devices in a biological control approach against aphids. Semiochemical diffusion from beads was studied in the laboratory according to abiotic parameters. Efficiency of formulations as hoverfly attractant was demonstrated in field experiments from June to August 2009. The diffusion of semiochemicals from alginate bead formulations was principally limited by high values (>85%) of relative humidity in the air. Temperature also impacts the release of volatile compounds. In field experiments, these two abiotic factors were supposed to highly condition the trapping of hoverflies. These field trappings demonstrated the efficiency of both semiochemical formulations compared to control (formulation without semiochemical) to catch females of Syrphidae during three months.This research proved the efficiency of semiochemical alginate formulations as potential biological control tool to attract aphid predators.

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Section: Introductionmentioning

confidence: 99%

A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

Heuskin

Lorge

Leroy

et al. 2012

JEE

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“…Among them, Episyrphus balteatus DeGeer is the most commonly recorded syrphid species on agricultural lands (Chambers et al, 1986) and was already studied to investigate predator prey location (Bargen et al, 1998). In order to study the relation between volatile emission from aphids and prey location by E. balteatus larvae, three aphid species were selected according to the volatile pattern they released.…”

Section: Introductionmentioning

confidence: 99%

Role of (E)-β-farnesene in systematic aphid prey location by Episyrphus balteatus larvae (Diptera: Syrphidae)

Francis¹,

Martin²,

Lognay³

et al. 2005

Eur. J. Entomol.

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Abstract. The foraging behaviour of beneficials such as aphidophagous predators depend largely on volatile compounds emitted by potential preys. Even if polyphagous predatory species are considered, all the potential preys are not systematically localised and accepted. In this work, chemical cues from different aphids and plants, each alone or in association, were studied to elucidate their role in prey location. Using a four-arm olfactometer, attraction of combinations of three aphid (Megoura viciae, Acyrthosiphon pisum and Aphis fabae) and one plant (Vicia faba) species for Episyrphus balteatus larvae was observed. Predatory hoverfly larvae were attracted by all tested stimuli in the presence of aphids, whatever the species. Whole or crushed aphids and also aphids on bean plant parts were attractive to syrphid larvae, but the host plant alone did not present any infochemical role for E. balteatus. Identification and quantification of the volatile releases from aphid and plant species, alone or in association, were performed using SPME and GC-MS methods. Aphid alarm pheromone, (E)--farnesene, was found in the volatile pattern of each aphid and was tested for its role as an effective kairomone for the hoverfly.

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“…Anthicid and 109 Selectivity of Insecticides to Natural Enemies coccinellid predators as well as aphidiid parasitoids are recognized by their relative importance in different agroecosytems (Chambers et al, 1986;Elmali, 1997;Miranda et al, 1998) are often observed in high abundance in brassica crops.…”

Section: Discussionmentioning

confidence: 99%

“…Coccinellid and anthicid predators (Elmali, 1997;Miranda et al, 1998) and braconid parasitoids (Chambers et al, 1986) are recognized as important mortality factors of aphids. Cycloneda sanguinea (L.) (Coleoptera: Coccinellidae) and Acanthinus sp.…”

Section: Introductionmentioning

confidence: 99%

Conservation of natural enemies in brassica crops: comparative selectivity of insecticides in the management of Brevicoryne brassicae (Hemiptera: Sternorrhyncha: Aphididae)

Bacci

Picanço

Rosado

et al. 2009

Appl. Entomol. Zool.

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In the present study, we evaluate the toxicity of six insecticides to Brevicoryne brassicae (L.) (Hemiptera: Sternorrhyncha: Aphididae), predatory coleopterans Cycloneda sanguinea (L.) (Coccinellidae) and Acanthinus sp. (Anthicidae), and the hymenopteran parasitoid Diaeretiella rapae (McIntosh) (Braconidae, Aphidiinae). Late-instar nymphs of B. brassicae and adults of C. sanguinea, Acanthinus sp. and D. rapae were exposed to nine concentrations of acephate, deltamethrin, dimethoate, methamidophos, methyl parathion and pirimicarb. Selectivity, toxicity, and tolerance ratios were calculated from LC 50 values to determine insecticide toxicity to B. brassicae and natural enemies as well as insecticide tolerance of the natural enemies. Pirimicarb was highly selective to Acanthinus sp., C. sanguinea, and D. rapae. Dimethoate, methamidophos and methyl parathion also showed selectivity to C. sanguinea and Acanthinus sp., but not to D. rapae. Methamidophos was the least potent insecticide against B. brassicae exhibiting the highest LC 50 amongst the products tested and was more toxic to the D. rapae relative to the aphid. Overall, the predators Acanthinus sp. and C. sanguinea were more tolerant to the insecticides than was the parasitoid D. rapae. The role of insecticides in IPM systems of brassica crops is discussed based on the toxicity to B. brassicae and selectivity to natural enemies.

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Control of cereal aphids in winter wheat by natural enemies: aphid‐specific predators, parasitoids and pathogenic fungi

Cited by 93 publications

References 13 publications

A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

Role of (E)-β-farnesene in systematic aphid prey location by Episyrphus balteatus larvae (Diptera: Syrphidae)

Conservation of natural enemies in brassica crops: comparative selectivity of insecticides in the management of Brevicoryne brassicae (Hemiptera: Sternorrhyncha: Aphididae)

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