Comparison of nectar use and preference in the parasitoid<i>Trybliographa rapae</i>(Hymenoptera: Figitidae) and its host, the cabbage root fly,<i>Delia radicum</i>(Diptera: Anthomyiidae)

Nilsson, Ulf; Rännbäck, Linda-Marie; Anderson, Peter; Eriksson, Anna; Rämert, Birgitta

doi:10.1080/09583157.2011.605518

Cited by 19 publications

(17 citation statements)

References 48 publications

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“…Ideally, such 'insectary' plantings should be comprised of a mixture of different species that vary in flower structure, size, color, and flowering period so as to benefit the maximum number of beneficial insects while not stimulating increases in pest species (Baggen and Gurr 1998;Baggen et al 1999;Begum et al 2006;Lavendero et al 2006;Kehrli and Bachera 2008;Winkler et al 2009;Nilsson et al 2011Nilsson et al , 2012. Commercial seed mixtures of insectary flowers are available, but do not perform consistently well under different conditions (Carreck and Williams 1997).…”

Section: Introductionmentioning

confidence: 98%

Development of an Insectary Plant Mixture for New Mexico and its Effect on Pests and Beneficial Insects Associated with Pumpkins

Grasswitz

2013

Southwestern Entomologist

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Section: Introductionmentioning

confidence: 98%

Development of an Insectary Plant Mixture for New Mexico and its Effect on Pests and Beneficial Insects Associated with Pumpkins

Grasswitz

2013

Southwestern Entomologist

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“…Globally, natural enemies make an important contribution toward controlling a wide range of agricultural pests (Bianchi et al , ; van Lenteren, ). Hymenopteran parasitoids are particularly important for the control of major agricultural pests in the families Lepidoptera (Guerra‐Sobrevilla, ; Moreau et al , ), Diptera (Ovruski et al , ; Nilsson et al , ) and Hemiptera (Marchand & McNeil, ; Daane et al , ).…”

Section: Introductionmentioning

confidence: 99%

Ground cover and floral resources in shelterbelts increase the abundance of beneficial hymenopteran families

2014

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1 Hymenopteran parasitoids are important natural enemies of pest species in many agricultural crops, including grapes, and there is increasing interest in using habitat manipulation to enhance populations. 2 In the present study, we investigated which vegetation variables of shelterbelts are associated with increased hymenopteran family abundance by screening 60 shelterbelts adjacent to vineyards or pasture near Melbourne, Australia. 3 Associations between vegetation characteristics and parasitoid abundance, sampled five times at monthly intervals using canopy sticky traps, were investigated. 4 The presence of vineyard or pasture adjacent to the shelterbelt had no impact on hymenopteran family abundance within the shelterbelt. The availability of floral resources influenced a single family; the abundance of the Trichogrammatidae was doubled by the presence of canopy floral resources. By contrast, an increased abundance of some large Hymenoptera families was associated with a decreasing leaf litter depth and the proportion of introduced ground cover, an increased grass height and the amount of ground with vegetated cover. 5 These findings suggest that specific manipulations of shelterbelts could increase populations of beneficials to some degree, with potential effects on pests.

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“…T. rapae, being a pro-ovigenic parasitoid, is known to reabsorb its eggs to fulfil its nutritional requirements and live longer under low nutrient conditions (Jervis et al 2001). However, previous field studies have found that T. rapae lived longer when provided with floral nectar throughout their lives (Nilsson et al 2011). On examination of the ovaries of C. marginiventris and T. rapae after the survival experiment, we found that the potential fecundity of both parasitoids was higher after feeding on EFN on the first day than when they were given only water.…”

Section: Discussionmentioning

confidence: 48%

“…2001). However, previous field studies have found that T. rapae lived longer when provided with floral nectar throughout their lives (Nilsson et al . 2011).…”

Section: Discussionmentioning

confidence: 92%

A novel indirect defence in Brassicaceae: Structure and function of extrafloral nectaries in Brassica juncea

Mathur

Wagenaar

Caissard

et al. 2012

Plant Cell & Environment

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While nectaries are commonly found in flowers, some plants also form extrafloral nectaries on stems or leaves. For the first time in the family Brassicaceae, here we report extrafloral nectaries in Brassica juncea. The extrafloral nectar (EFN) was secreted from previously amorphic sites on stems, flowering stalks and leaf axils from the onset of flowering until silique formation. Transverse sections at the point of nectar secretion revealed a pocket-like structure whose opening was surrounded by modified stomatal guard cells. The EFN droplets were viscous and up to 50% of the total weight was sugars, 97% of which was sucrose in the five varieties of B. juncea examined. Threonine, glutamine, arginine and glutamate were the most abundant amino acids. EFN droplets also contained glucosinolates, mainly gluconapin and sinigrin. Nectar secretion was increased when the plants were damaged by chewing above-and belowground herbivores and sap-sucking aphids. Parasitoids of each herbivore species were tested for their preference, of which three parasitoids preferred EFN and sucrose solutions over water. Moreover, the survival and fecundity of parasitoids were positively affected by feeding on EFN. We conclude that EFN production in B. juncea may contribute to the indirect defence of this plant species.

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Comparison of nectar use and preference in the parasitoidTrybliographa rapae(Hymenoptera: Figitidae) and its host, the cabbage root fly,Delia radicum(Diptera: Anthomyiidae)

Cited by 19 publications

References 48 publications

Development of an Insectary Plant Mixture for New Mexico and its Effect on Pests and Beneficial Insects Associated with Pumpkins

Development of an Insectary Plant Mixture for New Mexico and its Effect on Pests and Beneficial Insects Associated with Pumpkins

Ground cover and floral resources in shelterbelts increase the abundance of beneficial hymenopteran families

A novel indirect defence in Brassicaceae: Structure and function of extrafloral nectaries in Brassica juncea

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