Host plant testing ofUrophora quadrifasciata [Diptera: Tephritidae] againstCarthamus tinctorius and two North American species ofCentaurea

@article{Rees1991HostPT,
  title={Host plant testing ofUrophora quadrifasciata [Diptera: Tephritidae] againstCarthamus tinctorius and two North American species ofCentaurea},
  author={Norman E. Rees and Jim M. Story},
  journal={Entomophaga},
  year={1991},
  volume={36},
  pages={115-119}
}
Host specificity ofUrophora quadrifasciata (Meig.) [Dipt.: Tephritidae], an introduced biological control agent of diffuse and spotted knapweed, was investigated by exposing flies to safflower,Carthamus tinctorius L., and 2 native knapweeds,Centaurea americana Nutt. andC. rothrockii Greenman. Results of the tests, and literature records indicate thatU. quadrifasciata is host specific to a few closely related plants of introduced knapweed species, and thus poses no threat to economically and… 

Distribution of Urophora Affinis and U. Quadrifasciata (Diptera: Tephritidae) for biological control of spotted knapweed (Centaurea Maculosa) and diffuse knapweed (Centaurea Diffusa) in Michigan

Urophora affinis and U. quadrifasciata are two seedhead flies approved for release in the United States in 1971 and 1988 for biological control of spotted and diffuse knapweed.

Attack of Urophora Quadrifasciata (Meig.) (Diiptera: Tephritidae) A Biological Control Agent for Spotted Knapweed ( Centaurea Maculosa Lamarck) and Diffuse Knapweed ( C. Diffusa Lamarck) (Asteraceae) by a Parasitoid, Pteromalus Sp. (Hymenoptera: Pteromalidae) in Michigan

Urophora quadrifasciata_(Meig.) a seedhead fly released in North America for biological control of Centaurea maculosa and C. diffusa is parasitized by a Pteromalus sp. Parasitism up to 60% of U.

Larinus minutus (Coleoptera: Curculionidae) and Urophora quadrifasciata (Diptera: Tephritidae), Evidence for Interaction and Impact on Spotted Knapweed in Arkansas

It is determined that L. minutus is more effective at reducing spotted knapweed seed production than U. quadrifasciata within individual capitula, and this could affect the efficacy of the biological control program.

References

SHOWING 1-10 OF 26 REFERENCES

FIRST REPORT OF THE DISPERSAL INTO MONTANA OF UROPHORA QUADRIFASCIATA (DIPTERA: TEPHRITIDAE), A FLY RELEASED IN CANADA FOR BIOLOGICAL CONTROL OF SPOTTED AND DIFFUSE KNAPWEED

  • J. Story
  • Biology
    The Canadian Entomologist
  • 1985
Two tephritid flies of European origin have been introduced into North America for biological control of spotted knapweed, Centaurea maculosa Lam., and diffuse knapweed, C. diffusa Lam. One, Urophora

Release and Establishment of Urophora affinis (Diptera: Tephritidae) on Spotted Knapweed in Western Montana

A gall-producing fly, Urophora affinis Frfld, was released at a site in western Montana in 1973 for the control of spotted knapweed and the population within the field cage increased significantly over a 2-yr period.

SEASONAL DISTRIBUTION OF THE FLOWER THRIPS (FRANKLINIELLA TRITICI (FITCH)) AND ONION THRIPS (THRIPS TABACI LINDEMAN) (THYSANOPTERA: THRIPIDAE) ON SAFFLOWER IN EASTERN MONTANA

There is little information available on the pest insect species on safflower in the Northern Great Plains; however, four pest species have been reported from California, including the westem flower thrips and the bean aphid.

Biological Control of Diffuse Knapweed (Centaurea diffusa) and Spotted Knapweed (C. maculosa)

Diffuse knapweed (Centaurea diffusa Lam.) and spotted knapweed (C. maculosa Lam.) presently infest approximately 1.5 million ha of pasture and rangeland in Washington, Montana, Idaho, Oregon, and

ALLELOPATHIC POTENTIAL OF DIFFUSE KNAPWEED (Centaurea diffusa) EXTRACTS

An in vitro survey was conducted to determine the allelopathic potential of diffuseknapweed, a noxious weed invading the Pacific Northwest, and inhibitory activity was found mainly in chloroform- and water-soluble extracts of knapweed.

A GROWTH INHIBITOR FOUND IN CENTAUREA SPP.

Chromatographic techniques were developed to isolate an inhibitor common to the three species which was soluble in both water and ether, and inhibitory to the seedling development of barley and lettuce and relatively more inhibitive to root development than to the top growth of the species tested.

Phytotoxic properties of cnicin, a sesquiterpene lactone fromcentaurea maculosa (spotted knapweed)

Water and solvent extracts from the aerial tissues ofCentaurea maculosa, spotted knapweed, inhibited the root growth of lettuce and growth, particularly of the roots, was retarded between 1 and 4 mg of cnicin.

The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada, Volume 2.

The new Britton and Brown illustrated flora of the Northeastern United States and adjacent Canada , The new Britton and Brown illustrated flora of the Northeastern United States and adjacent Canada ,