Soybean Aphid Predators in Québec and the Suitability of Aphis glycines as Prey for Three Coccinellidae

Mignault, Marie-Pierre; Roy, Michèle; Brodeur, Jacques

doi:10.1007/s10526-005-1517-1

Cited by 78 publications

(63 citation statements)

References 35 publications

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“…data). In soybean, the arrival of this coccinellid coincided with the arrival of the soybean aphid, Aphis glycines Matsumura (Fox et al, 2004;Mignault et al, 2006). Our study reports results from several agroecosystems, where the species is well adapted.…”

Section: Discussionmentioning

confidence: 58%

The multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in Quebec agroecosystems ten years after its arrival

Lucas¹,

Vincent²,

Labrie³

et al. 2007

Eur. J. Entomol.

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Section: Discussionmentioning

confidence: 58%

The multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in Quebec agroecosystems ten years after its arrival

Lucas¹,

Vincent²,

Labrie³

et al. 2007

Eur. J. Entomol.

Self Cite

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“…Size, strength of the integument and distastefulness of the pupae make this stage less vulnerable to predation (Félix and Soares 2004;Labrie unpublished data). According to several studies, fecundity of H. axyridis is higher than other species, with between 703 and 3,800 eggs laid by a single female in laboratory studies (Iablokoff-Khnozorian 1982;Stathas et al 2001;Mignault et al 2006). For example, fecundity of H. axyridis (2,008 eggs per female) reared on soybean aphids Aphis glycines Matsumura (Homoptera: Aphididae) was significantly higher than the invasive Propylea quatuordecimpunctata L. (Coleoptera: Coccinellidae) (593 eggs per female) or the indigenous C. maculata (390) in Québec, Canada (Mignault et al 2006).…”

Section: Harmonia Axyridis: a Super Invader?mentioning

confidence: 99%

Harmonia axyridis: What will stop the invader?

Soares

Borges

et al. 2007

BioControl

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In recent years Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) has become a very popular insect among biological control practitioners and scientists, not only for its potential to be an efficient biological control agent but also because it is considered invasive. Individuals of this species were deliberately introduced into several countries for biological control of different arthropods pests. However the predator itself became an invasive species, affecting the dynamics and composition of several guilds through direct or indirect interactions with established species, including intraguild predation. In this paper we discuss the reasons why the species has a high invasiveness and what are the limits to invasion by this species. It is not clear if the invasiveness of the beetle is linked to its biological, ecological and behavioural abilities, or to other factors such as invasibility and interactions between the invaders, the noninvaders, and the habitat, which may in part explain the reasons of its success and help us to answer the question ''what will stop the invader?'' We also discuss the reason for the absence of the predator in the Azores islands. Despite the intentional introduction of H. axyridis in the Azores and the high number of individuals released, there are no records of this species in the wild, despite recent extensive sampling effort. In this paper we discuss the reasons for the apparent failure or the delay in establishment of the predator. One factor which may hamper the establishment of H. axyridis in some of the Azores islands is the absence of winter

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“…In North America, natural enemies, particularly foliage inhabiting predators, can suppress Aphis glycines Matsumura (Hemiptera: Aphididae) populations , Rutledge and OÕNeil 2005, Mignault et al 2006, Schmidt et al 2007. Of the several species of predators that can be found in soybean, Glycine max (L) Merr.…”

mentioning

confidence: 99%

Impact of Reduced-Risk Insecticides on Soybean Aphid and Associated Natural Enemies

Ohnesorg¹,

Johnson²,

O’Neal³

2009

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Insect predators in North America suppress Aphis glycinesMatsumura (Hemiptera: Aphididae) populations; however, insecticides are required when populations reach economically damaging levels. Currently, insecticides used to manage A. glycines are broad-spectrum (pyrethroids and organophosphates), and probably reduce beneficial insect abundance in soybean, Glycine max (L.) Merr. Our goal was to determine whether insecticides considered reduced-risk by the Environmental Protection Agency could protect soybean yield from A. glycines herbivory while having a limited impact on the aphid's natural enemies. We compared three insecticides (imidacloprid, thiamethoxam, and pymetrozine,) to a broad-spectrum insecticide (λ-cyhalothrin) and an untreated control using two application methods. We applied neonicotinoid insecticides to seeds (imidacloprid and thiamethoxam) as well as foliage (imidacloprid); pymetrozine and λ-cyhalothrin were applied only to foliage. Foliage-applied insecticides had lower A. glycines populations and higher yields than the seed-applied insecticides. Among foliage-applied insecticides, pymetrozine and imidacloprid had an intermediate level of A. glycines population and yield protection compared with λ-cyhalothrin and the untreated control. We monitored natural enemies with yellow sticky cards, sweep-nets, and direct observation. Before foliar insecticides were applied (i.e., before aphid populations developed) seed treatments had no observable effect on the abundance of natural enemies. After foliar insecticides were applied, differences in natural enemy abundance were observed when sampled with sweep-nets and direct observation but not with yellow sticky cards. Based on the first two sampling methods, pymetrozine and the foliage-applied imidacloprid had intermediate abundances of natural enemies compared with the untreated control and λ-cyhalothrin. KeywordsGlycine max, biological control, insecticide regulation, conservation, nontarget impacts Disciplines Agriculture | Entomology CommentsThis article is from Journal of Economic Entomology 102 (5) ABSTRACT Insect predators in North America suppress Aphis glycines Matsumura (Hemiptera: Aphididae) populations; however, insecticides are required when populations reach economically damaging levels. Currently, insecticides used to manage A. glycines are broad-spectrum (pyrethroids and organophosphates), and probably reduce beneÞcial insect abundance in soybean, Glycine max (L.) Merr. Our goal was to determine whether insecticides considered reduced-risk by the Environmental Protection Agency could protect soybean yield from A. glycines herbivory while having a limited impact on the aphidÕs natural enemies. We compared three insecticides (imidacloprid, thiamethoxam, and pymetrozine,) to a broad-spectrum insecticide (-cyhalothrin) and an untreated control using two application methods. We applied neonicotinoid insecticides to seeds (imidacloprid and thiamethoxam) as well as foliage (imidacloprid); pymetrozine and -cyhalothrin were applied only to ...

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Soybean Aphid Predators in Québec and the Suitability of Aphis glycines as Prey for Three Coccinellidae

Cited by 78 publications

References 35 publications

The multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in Quebec agroecosystems ten years after its arrival

The multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in Quebec agroecosystems ten years after its arrival

Harmonia axyridis: What will stop the invader?

Impact of Reduced-Risk Insecticides on Soybean Aphid and Associated Natural Enemies

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