Ecology

Associations

Flowering Plants Visited by Delia radicum in Illinois

Delia radicum Linnaeus: Anthomyiidae, Diptera
(this observation is from Robertson)

Ranunculaceae: Ranunculus septentrionalis

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Foodplant / internal feeder
larva of Delia radicum feeds within live root of Brassica oleracea var. capitata

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Brassica oleracea var. botrytis

Foodplant / internal feeder
larva of Delia radicum feeds within live sprout of Brassica oleracea var. gemmifera

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Brassica rapa

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Brassica oleracea var. italica

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Raphanus sativus

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Erysimum cheiri

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Lobularia maritima

Foodplant / internal feeder
larva of Delia radicum feeds within live root of Matthiola

Animal / predator
larva of Phaonia trimaculata is predator of larva of Delia radicum

Animal / parasitoid / endoparasitoid
larva of Trybliographa rapae is endoparasitoid of larva of Delia radicum

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Delia radicum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 21
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Delia radicum

Delia radicum, known variously as the cabbage fly, cabbage root fly, root fly or turnip fly, is a pest of crops.[2] The larvae of the cabbage root fly are sometimes known as the cabbage maggot or root maggot. The adult flies are approximately 1 cm long and are grey in colour but otherwise resemble the common house fly.[3]

The flies can be found all over Europe. After over-wintering as pupae in the soil, the flies hatch in spring, feed on nectar and lay eggs close to plants of the genus Brassica. The eggs are white and about 1 milimetre in diameter. They hatch into white maggots after about six days and the larvae feed for about three weeks on the roots and stems of the cabbage plants. After this, the larvae are typically 0.9 to 1 cm in length and form reddish brown pupae which hatch into adult flies after around 20 days. This species is monovoltine (has one generation a year) in northern Europe and bi- or trivoltine in central Europe.[4]

Economic significance

The first sign of the presence of the larvae is a delay in plant growth accompanied by the withering of leaves which develop a bluish tinge. The larvae are found on cabbage, turnip, swede, radish and other cruciferous crops. Sometimes 300 larvae can be found on one plant, damaging the inner parts of the main root and disrupting the transport of water and nutrients to the stem and leaves causing the death of many plants.[4]

References

  1. ^ Soos, A.; Papp, L. (Eds.) (1986). Catalogue of Palaearctic Diptera. Vol. 13, Anthomyiidae - Tachinidae. Hungarian Natural History Museum. pp. 624 pp. ISBN 963-7093-21-4. 
  2. ^ Marks, David. "Cabbage root fly". Garden Action. Retrieved 2007-10-18. 
  3. ^ "Cabbage root fly". www.abdn.ac.uk. Retrieved 2008-04-04. 
  4. ^ a b AgroAtlas
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Source: Wikipedia

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