Natural Enemy Impact on the Abundance of Diuraphis noxia (Homoptera: Aphididae) in Wheat in Southern France

Hopper, Keith R.; Aidara, Sekou; Agret, Sylvie; Cabal, Joelle; Coutinot, D.; Dabiré, Rémy A.; Lesieux, Caroline; Kirk, Gerhild; Reichert, Stefan; Tronchetti, Francoise; Vidal, Jerome

doi:10.1093/ee/24.2.402

Cited by 45 publications

(32 citation statements)

References 10 publications

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“…The occurrence of Aphelinus sp. as a primary parasitoid of D. noxia was stated in Southern France (Hopper et al 1995). These results indicate that in the NE Iberian Peninsula, Aphelinus sp.…”

Section: Discussionmentioning

confidence: 52%

Seasonal parasitism of cereal aphids in a Mediterranean arable crop system

2007

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We monitored winter cereal Welds in a Mediterranean arable crop system to obtain information about the aphid parasitoid species composition and the aphid-parasitoid interactions through the whole cropping cycle. Nine species of aphid primary parasitoids (Hymenoptera, Braconidae, Aphidiinae) were identiWed. The most abundant species were Aphidius rhopalosiphi, Aphidius matricariae, Aphidius ervi and Lysiphlebus testaceipes. The genus Aphelinus sp. (Hym., Aphelinidae) was also identiWed. We determined seasonal host-parasitoid associations over the entire cereal crop cycle. A number of new such associations were recorded, which were previously unknown in Spain and Europe. Our results indicated broad associations of L. testaceipes and A. matricariae with cereal aphids; furthermore, the association of Aphelinus sp. with several cereal aphid species was also substantial. In the NE of the Iberian Peninsula, the cereal aphid parasitoids that we identiWed are able to develop throughout the crop season on one or more host species. Thus, the main aphid species can be parasitized eVectively throughout the entire cereal crop cycle. We discuss the role of cereal aphid parasitoids in the region in the context of our experimental results.

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Section: Discussionmentioning

confidence: 52%

Seasonal parasitism of cereal aphids in a Mediterranean arable crop system

2007

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“…Increased numbers of alates on the plants and recovered in suction traps have been reported at the time of the aphid population peak in some studies of aphids on cereal crops (e.g. Ba-Angood & Stewart, 1980;Watt & Dixon, 1981;Howard & Dixon, 1990) and pea crops (Bommarco & Ekbom, 1996;McVean et al, 1999), but other studies have identified very few alates in peak aphid populations on cereals (Hopper et al, 1995), potatoes (Nakata, 1995a;Karley et al, 2003), and sugar beet (Williams et al, 1999). One study has additionally revealed an increase in the incidence of aphids dropping from plants at the time of the mid-season population crash, but the contribution of this process to the overall population decline was probably small (Karley et al, 2003).…”

Section: How Do Aphid Populations Crash?mentioning

confidence: 99%

The mid‐season crash in aphid populations: why and how does it occur?

Karley

Parker

Pitchford

et al. 2004

Ecological Entomology

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Abstract. 1. Aphid populations on agricultural crops in temperature regions collapse over a few days from peak numbers to local extinction soon after midsummer (e.g. mid-July in the U.K.). The populations recover 6-8 weeks later. There is anecdotal or incidental evidence of an equivalent mid-season population crash of aphids on grasses and forbs in natural vegetation.2. The ecological factors causing the mid-season population crash of aphids include a decline in plant nutritional quality and increased natural enemy pressure as the season progresses. Extreme weather events, e.g. severe rainstorms, can precipitate the crash but weather conditions are not a consistent contributory factor.3. The population processes underlying the crash comprise enhanced emigration, especially by alate (winged) aphids, depressed performance resulting in reduced birth rates, and elevated mortality caused by natural enemies.4. Mathematical models, previously applied to aphid populations on agricultural crops, have great potential for studies of aphid dynamics in natural vegetation. In particular, they can help identify the contribution of various ecological factors to the timing of the population crash and offer explanations for how slow changes in population processes can result in a rapid collapse of aphid populations.

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“…However, in spite of its utilisation in glasshouses in several European countries A. colemani was not detected in cereal communities in Serbia. Although Aphelinus species are significant cereal aphid parasitoids in Spain (Lumbierres et al, 2007) and France (Hopper et al, 1995) we found few Aphelinus specimens in Serbia. Furthermore, parasitoids dominated over hyperparasitoids.…”

Section: Discussionmentioning

confidence: 62%

Cereal aphids (Hemiptera: Aphidoidea) in Serbia: Seasonal dynamics and natural enemies

Tomanović¹,

Kavallieratos²,

Starý³

et al. 2008

Eur. J. Entomol.

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Abstract. During 1989During -2006 the number of live aphid, mummies, aphid specialist predators and their parasitoids in cereal fields in Serbia were recorded. S. avenae and M. dirhodum were the most common, both on wheat and rye crops. Maximum numbers of cereal aphids were detected between the end of May and the middle of June. A low percentage of mummified aphids was recorded during May and June, but increased rapidly at the beginning of July, when aphids left the wheat crop. Here, we record over 60 species of cereal aphid natural enemies, including primary and secondary parasitoids, aphid specific predators and a wide spectrum of their parasitoids in Serbian cereal crop systems. Aphidius uzbekistanicus Luzhetzki, Aphidius rhopalosiphi De Stefani, Aphidius ervi Haliday and Praon gallicum Starý were the most abundant species of primary parasitoids. Of the secondary parasitoids, six species were dominant with Asaphes suspensus (Nees) and Dendrocerus carpenteri (Curtis) generally the most often recorded. Coccinella septempunctata L. was the most abundant coccinellid and syrphid flies were represented by 11 species, two of which, Sphaerophoria scripta (L.) and Episyrphus balteatus (DeGeer), were the most common.

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Natural Enemy Impact on the Abundance of Diuraphis noxia (Homoptera: Aphididae) in Wheat in Southern France

Cited by 45 publications

References 10 publications

Seasonal parasitism of cereal aphids in a Mediterranean arable crop system

Seasonal parasitism of cereal aphids in a Mediterranean arable crop system

The mid‐season crash in aphid populations: why and how does it occur?

Cereal aphids (Hemiptera: Aphidoidea) in Serbia: Seasonal dynamics and natural enemies

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