Non-target plant use by a weed biocontrol agent in idaho: host expansion or opportunistic behavior?

  title={Non-target plant use by a weed biocontrol agent in idaho: host expansion or opportunistic behavior?},
  author={Stephen L. Clement and L. J. Smith and Jens Prena and Marvin D. Kleene and R. C. Johnson},
  journal={Biocontrol Science and Technology},
  pages={455 - 461}
Abstract Larinus curtus Hochhuth (Coleoptera: Curculionidae) was first introduced into the western United States from Greece for the biological control of yellow starthistle (YST), Centaurea solstitialis L., in 1992. The discovery of L. curtus adults in the open flowerheads of safflower (SF), Carthamus tinctorius L., near Lewiston, Idaho in 2007 suggested this weevil might be expanding its host range to include a non-target crop species closely related to YST. In 2008 field plots near the 2007… 
8 Citations
Selectivity of a biological control agent, Diorhabda carinulata Desbrochers, 1870 (Coleoptera: Chrysomelidae) for host species within the genus Tamarix Linneaus, 1753
Initial field releases of the saltcedar leaf beetle against saltcedars, Tamarix Linneaus, 1753 (Tamaricaceae) in North America were unsuccessful at sites where the target taxon was T. parviflora, leading to the conclusion that such failures are based on host specificity as a consequence of adult behavioral avoidance of T.Parv iflora.
Environmental Variables Influence the Association of Eustenopus villosus and Larinus curtus (Coleoptera: Curculionidae) Adults With Different Growth Stages of the Invasive Thistle Centaurea solstitialis (Asteraceae: Cardueae) in Washington State
A 2-yr field study in eastern Washington State quantified the effect of environmental factors on the overwintered Eustenopus villosus and Larinus curtus adults in relation to phenology of Centaurea solstitialis L. (Asteraceae: Cardueae), the feeding and breeding host for these two weevil biocontrol agents.
Non-target plant testing of the flea beetle Agasicles hygrophila, a biological control agent for Alternanthera philoxeroides (alligatorweed) in China
Non-target plant selection tests showed that Agasicles hygrophila could feed on Alternanthera sessilis, but the mature larvae did not pupate successfully, indicating that A. hyGrophila is safe for controlling Alternanthersa philoxeroides in China.
How Safe Is Weed Biological Control? A Global Review of Direct Nontarget Attack
The incidences of unpredicted nontarget attack of intentionally released weed biocontrol agents decreased over time and this trend is thought to continue with scientific advancements.
Apparent competition between native and exotic plants mediated by a native insect herbivore
Apparent Competition Between Native and Exotic Plants Mediated by a Native Insect Herbivore is found to be driven by competition between native and exotic plants.


Biology of Larinus curtus Hochhut (Coleoptera: Curculionidae), a European Weevil for Biological Control of Yellow Starthistle Centaurea solstitialis L (Asteraceae), in the United States
Abstract The biology of the weevil Larinus curtus Hochhut was studied in the field in northern Greece and in the laboratory in Rome, Italy, and in Thermi, near Thessaloniki, Greece. The species is
Unintentionally Released Chaetorellia succinea (Diptera: Tephritidae): Is This Natural Enemy of Yellow Starthistle a Threat to Safflower Growers?
It is felt that the results indicate a minimal risk to commercial safflower growers, and this fly continues to show promise in assisting toward the eventual biological control of yellow starthistle.
Host-Use Patterns of Capitulum-Feeding Insects of Yellow Starthistle: Results from a Garden Plot in Greece
The usefulness of the open field test in host specificity determination of insects for biological control of weeds is pointed to, as well as the potential effectiveness of E. villosus as a biocontrol agent.
Phytophagous insect species associated with flower heads of yellow starthistle (Centaurea solstitialis L.)
The larvae of about 20 phytophagous species exploit heads of Centaurea solstitialis in the Mediterranean region and reach maximal values in northern Greece, where the degree of “species packing” exceeds that in any other Cynareae insect-host system so far studied.
Niches and size relationships in Coleoptera associated with Cardueae host plants: adaptations to resource gradients
Analyzing the niches and size relationships in Coleoptera associated with Cardueae host plants concludes that morphometric differences within the investigated guild of endophytic species (Larinus and Agapanthia/Lixus) evolved in response to size of the used plant structures and the size of potentially competing species.
Predictable risk to native plants in weed biological control
The elements of protection for the native flora are the selection of weed targets that have few or no native congeners and the introduction of biological control organisms with suitably narrow diets.
Open-field Tests in Host-specificity Determination of Insects for Biological Control of Weeds
Open-field testing can generate host data on candidate biocontrol agents under more natural conditions than those obtained via cage tests, and most field tests have been conducted in concert with laboratory host-specificity tests or in response to the results of laboratory tests.
Registration of WSRC01, WSRC02, and WSRC03 Winter-Hardy Safflower Germplasm
This is the first release of winter-hardy safflower and is expected to be useful in breeding improved winter saFFlower with potential adaptation to areas of the western United States and the southern Great Plains, in addition to international regions such as the Mediterranean basin and southwest Asia.
Biology and Biological Control of Yellow Starthistle
This second edition manual on the biological control of yellow starthistle is intended to give weed and land managers guidelines to develop and successfully establish a starthististle biocontrol program.