LIFE HISTORY AND IMMATURE STAGES OF THE PARASITOIDMICROPLITIS MEDIATOR(HYMENOPTERA: BRACONIDAE), REARED ON THE BERTHA ARMYWORMMAMESTRA CONFIGURATA(LEPIDOPTERA: NOCTUIDAE)

Arthur, A. P.; Mason, Peter G.

doi:10.4039/ent118487-5

Cited by 40 publications

(26 citation statements)

References 6 publications

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“…It is widely distributed from Central Europe to China (Shenefelt, 1973;Arthur and Mason, 1986). Zhang et al (2009) isolated a novel olfactory receptor gene MmedOrco from M. mediator and demonstrated antennal-specific expression, which reached a maximum level on the day of female emergence, and 2 h prior to male emergence.…”

Section: Introductionmentioning

confidence: 99%

Knockdown of Microplitis mediator Odorant Receptor Involved in the Sensitive Detection of Two Chemicals

Ren

Zhang

et al. 2012

J Chem Ecol

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Odorant receptors are thought to play critical roles in the perception of chemosensory stimuli by insects. The primary method to address the functions of odorant receptors in insects is to use in vitro binding assays between the receptors and potential chemical stimuli. We injected MmedOrco dsRNA into the abdominal cavity of a braconid wasp, Microplitis mediator, and assayed for expression of this gene 72 h after treatment (RNAi). Quantitative real-time PCR demonstrated that the level of mRNA expression in MmedOrco dsRNA-treated M. mediator was significantly reduced (>90%) when compared with water-treated controls. Furthermore, electroantennogram (EAG) responses of M. mediator to two chemical attractants, nonanal and farnesene, were also reduced significantly (~70%) in RNAi-treated M. mediator when compared to controls. RNAi-treated M. mediator also responded by walking/flying at a lower rate to both chemicals when compared with controls in a Y-tube olfactometer bioassay, which provides direct evidence that MmedOrco plays an important role in perception of nonanal and farnesene in M. mediator.

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Section: Introductionmentioning

confidence: 99%

Knockdown of Microplitis mediator Odorant Receptor Involved in the Sensitive Detection of Two Chemicals

Ren

Zhang

et al. 2012

J Chem Ecol

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“…The solitary larval endoparasitoid Microplitis mediator (Haliday) (Hymenoptera: Braconidae), a Palaearctic species widely distributed in Europe and Asia (Arthur and Mason 1986), parasitizes larvae of Ϸ40 different lepidopteran species (Shenefelt 1973) and was the dominant parasitoid associated with H. armigera in China, comprising 58% of all larval parasitoids recovered from H. armigera in Þeld collections in 1982 (Wang et al 1984a) and parasitizing 22.9 Ð 40% of the H. armigera in the Þeld. M. mediator can parasitize Þrst to fourth instars but prefers second and third instars to Þrst and fourth instars (Wang et al 1984a).…”

mentioning

confidence: 99%

Field Release of the Parasitoid Microplitis mediator (Hymenoptera: Braconidae) for Control of Helicoverpa armigera (Lepidoptera: Noctuidae) in Cotton Fields in Northwestern China’s Xinjiang Province

Yan

Coudron

et al. 2006

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“…Parasitized host larvae were reared on Brussels sprout until the parasitoids had completed larval development and egressed from the host. M. mediator is a fairly specialized solitary endoparasitoid that attacks L1-L4 instar larvae of M. brassicae and a few closely related hosts in the moth family Noctuidae (Arthur and Mason 1986). In this study M. mediator was reared on M. brassicae.…”

Section: Insectsmentioning

confidence: 99%

Genetic Variation in Defense Chemistry in Wild Cabbages Affects Herbivores and Their Endoparasitoids

Gols

Wagenaar

Bukovinszky

et al. 2008

Ecology

212

249

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Abstract. Populations of wild Brassica oleracea L. grow naturally along the Atlantic coastlines of the United Kingdom and France. Over a very small spatial scale (i.e., ,15 km) these populations differ in the expression of the defensive compounds, glucosinolates (GS). Thus far, very few studies have examined interactions between genetically distinct populations of a wild plant species and associated consumers in a multitrophic framework. Here, we compared the development of a specialist (Pieris rapae) and a generalist (Mamestra brassicae) insect herbivore and their endoparasitoids (Cotesia rubecula and Microplitis mediator, respectively) on three wild populations and one cultivar of B. oleracea under controlled greenhouse conditions. Herbivore performance was differentially affected by the plant population on which they were reared. Plant population influenced only development time and pupal mass in P. rapae, whereas plant population also had a dramatic effect on survival of M. brassicae. Prolonged development time in P. rapae corresponded with high levels of the indole GS, neoglucobrassicin, whereas reduced survival in M. brassicae coincided with high levels of the aliphatic GS, gluconapin and sinigrin. The difference between the two species can be explained by the fact that the specialist P. rapae is adapted to feed on plants containing GS and has evolved an effective detoxification system against aliphatic GS. The different B. oleracea populations also affected development of the endoparasitoids. Differences in foodplant quality for the hosts were reflected in adult size in C. rubecula and survival in M. mediator, and further showed that parasitoid performance is also affected by herbivore diet.

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LIFE HISTORY AND IMMATURE STAGES OF THE PARASITOIDMICROPLITIS MEDIATOR(HYMENOPTERA: BRACONIDAE), REARED ON THE BERTHA ARMYWORMMAMESTRA CONFIGURATA(LEPIDOPTERA: NOCTUIDAE)

Cited by 40 publications

References 6 publications

Knockdown of Microplitis mediator Odorant Receptor Involved in the Sensitive Detection of Two Chemicals

Knockdown of Microplitis mediator Odorant Receptor Involved in the Sensitive Detection of Two Chemicals

Field Release of the Parasitoid <I>Microplitis mediator</I> (Hymenoptera: Braconidae) for Control of <I>Helicoverpa armigera</I> (Lepidoptera: Noctuidae) in Cotton Fields in Northwestern China’s Xinjiang Province

Genetic Variation in Defense Chemistry in Wild Cabbages Affects Herbivores and Their Endoparasitoids

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