Effects of
Iberis umbellata
(Brassicaceae) on Insect Pests of Cabbage and on Potential Biological Control Agents

Bigger, David; Chaney, William E.

doi:10.1093/ee/27.1.161

Cited by 28 publications

(13 citation statements)

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“…The presence of certain plant species can affect oviposition patterns of insects without changing their preferred hosts, as has been reported in the case of T. ni in a cabbage plot bordered by Iberis umbellata L. (Bigger and Chaney 1998). In that study, fewer eggs were laid close to the edge and more in the centre of the plot compared with a monoculture, even though total egg densities remained unchanged.…”

Section: Discussionsupporting

confidence: 55%

Trichoplusia ni growth and preference on broccoli and eight common agricultural weeds

Cameron¹,

Isman²,

Upadhyaya³

2007

Can. J. Plant Sci.

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Cameron, J. H., Isman, M. B. and Upadhyaya, M. K. 2007. Trichoplusia ni growth and preference on broccoli and eight common agricultural weeds. Can. J. Plant Sci. 87: 413-421. Larval growth and feeding, and adult ovipositional preference of the cabbage looper, Trichoplusia ni Hübner, were investigated on broccoli (Brassica oleracea var. italica L.) and eight common agricultural weeds: cow cockle (Saponaria vaccaria L.), common groundsel (Senecio vulgaris L.), lamb's-quarters (Chenopodium album L.), redroot pigweed (Amaranthus retroflexus L.), sheep sorrel (Rumex acetosella L.), shepherd's purse (Capsella bursapastoris L.), stinkweed (Thlaspi arvense L.), and wild mustard (Sinapsis arvensis L.). Leaves from greenhouse grown plants were removed and fed to 1st instar larvae in a 7-d growth trial. Broccoli-fed larvae grew larger than those fed on cow cockle, redroot pigweed, sheep sorrel, stinkweed, and wild mustard. Only one insect of 64 survived for 7 d on stinkweed. In a leaf disc choice bioassay, 4th instar larvae showed a significant feeding preference for common groundsel over broccoli. Broccoli was preferred for oviposition over three of the weeds (common groundsel, lamb's-quarters, and shepherd's purse). Stinkweed showed promise as a dead-end trap species for this insect in broccoli, since more insects oviposited on stinkweed compared with broccoli yet larval survival on stinkweed was almost nil. . Pour cela, les auteurs ont prélevé les feuilles de plants cultivés en serre et les ont données en pâture aux larves du premier instar, dans un essai de croissance de sept jours. Les larves se nourrissant de brocoli étaient plus grosses que celle nourries de saponaire des vaches, d'amarante réfléchie, de rumex petite-oseille, de capselle, de tabouret des champs et de moutarde sauvage. Un seul insecte sur 64 a survécu sept jours sur le tabouret des champs. Dans le cadre d'un essai biologique avec disques foliaires, les larves du 4 e instar ont nettement préféré le séneçon vulgaire au brocoli. Pour la ponte, l'insecte préfère le brocoli à trois autres adventices (séneçon vulgaire, chénopode blanc et capselle). Le tabouret des champs pourrait servir de piège végétal pour amener ce parasite du brocoli dans un cul-de-sac, car les insectes étaient plus nombreux à pondre sur cette plante que sur le brocoli, malgré un taux de survie presque nul des larves. Mots clés: Trichoplusia ni, brocoli, Thlaspi arvense, oviposition, antiappétantThe presence of weedy species in an agricultural system may affect growth and yield of the crop (Blackshaw et al. 2002), and may influence pest and predator populations (Showler and Greenberg 2003) or pathogens (Groves et al. 2002). These interactions between weedy species, herbivores, and pathogens may have significant implications for agricultural management practices.Trichoplusia ni Hübner (Lepidoptera: Noctuidae) is a major pest of cole crops in North America (Howard et al. 1994). The larvae are green caterpillars, which undergo five instars before pupation, and two to three generations occ...

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Section: Discussionsupporting

confidence: 55%

Trichoplusia ni growth and preference on broccoli and eight common agricultural weeds

Cameron¹,

Isman²,

Upadhyaya³

2007

Can. J. Plant Sci.

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“…Several studies (81,147,150) have reported increased ovipositions by P. rapae onto B. oleracea in the presence of flowering companion plants. Borders of flowering Iberis umbellate surrounding B. oleracea increased oviposition by Trichoplusia ni, but not by P. rapae (12).…”

Section: Implications For Tritrophic Level Interactions and (Biologicmentioning

confidence: 88%

Nectar and Pollen Feeding by Insect Herbivores and Implications for Multitrophic Interactions

Wäckers

Romeis

Rijn

2007

Annu. Rev. Entomol.

294

220

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Among herbivorous insects with a complete metamorphosis the larval and adult stages usually differ considerably in their nutritional requirements and food ecology. Often, feeding on plant structural tissue is restricted to the larval stage, whereas the adult stage feeds primarily or exclusively on plant-provided food supplements such as nectar and pollen. Research on herbivore nutritional ecology has largely been divided along these lines. Most studies focus on actual herbivory by larval stages, while nectar and pollen feeding by adult herbivores has been addressed mainly in the light of plant-pollinator interactions. Only recently have we started to realize that the two phenomena are closely interlinked and that nectar and pollen feeding by adult herbivores can have a strong impact on plant-herbivore interactions. Here we address this largely ignored aspect of multitrophic level interactions and discuss its wide-ranging implications.

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“…The success of the propagation of flowers might critically depend on their distance to host occupied sites. Field studies reporting on the effects of flowering plants on pest reduction are not conclusive, with several studies reporting a positive relationship (Powell, 1986;Jervis et al, 1993;Baggen and Gurr, 1998) and other studies reporting no effect (Kloen and Altieri, 1990;Cowgill, 1995;Bigger and Chaney, 1998;Cappuccino et al, 1999;Nicholls et al, 2000). As several species of flowering plants beneficial for parasitoid survival have been already identified (Leius, 1961;Van Emden, 1963;Maingay et al, 1991;Jervis et al, 1993;Idris and Grafius, 1995;Patt et al, 1997), the next crucial step in understanding nectar foraging in the field would be to determine distances (Topham and Beardsley, 1975) over which parasitic wasps respond to flowers and hosts.…”

Section: Nectar-foraging Of Parasitic Wasps In the Fieldmentioning

confidence: 99%

The Sweet Tooth of Adult Parasitoid Cotesia rubecula: Ignoring Hosts for Nectar?

Siekmann

Keller

Tenhumberg

2004

Journal of Insect Behavior

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Investing time and energy into survival and reproduction often presents a trade-off to many species of animals. In parasitic wasps, both hosts and sugar sources contribute to the forager's fitness but are often found in different locations. The decision to search for hosts or for food can have a strong impact on fitness when the forager's lifetime is short and resources are not abundant. We investigated the tendency of flowers and hosts to attract 1-day-old female Cotesia rubecula Marshall (Hymenoptera: Braconidae) with different feeding histories in a wind tunnel. Only well-fed wasps exhibited a preference for hosts. In comparison, unfed wasps visited hosts and flowers in equal proportions. Feeding experience had a strong impact on the searching behavior and the number of landings on both resources. Host and food stimuli seem to be equally attractive to hungry parasitic wasps such as C. rubecula. We expect that under field conditions the time available for active food searching in female C. rubecula is short and influenced by the presence of hosts.

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Effects of Iberis umbellata (Brassicaceae) on Insect Pests of Cabbage and on Potential Biological Control Agents

Cited by 28 publications

References 0 publications

Trichoplusia ni growth and preference on broccoli and eight common agricultural weeds

Trichoplusia ni growth and preference on broccoli and eight common agricultural weeds

Nectar and Pollen Feeding by Insect Herbivores and Implications for Multitrophic Interactions

The Sweet Tooth of Adult Parasitoid Cotesia rubecula: Ignoring Hosts for Nectar?

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