• beetle
  • Boll weevils begin to die at temperatures at or below −5 °C (23 °F). Research at the University of Missouri indicates they cannot survive more than an hour at −15 °C (5 °F). The insulation offered by leaf litter, crop residues, and snow may enable the beetle to survive when air temperatures drop to these levels. (wikipedia.org)
  • parasitic
  • Alien parasitic wasps, including accidental introductions and purposefully released biological control agents, have been implicated in the decline of native Hawaiian Lepidoptera. (unl.edu)
  • Other avenues of control that have been explored include weevil-resistant strains of cotton, the parasitic wasp Catolaccus grandis, the fungus Beauveria bassiana, and the Chilo iridescent virus. (wikipedia.org)
  • 1994
  • When underwater, the weevils breathe using plastron respiration, i.e., air that is trapped close to the body by scales (Buckingham and Bennett 1994). (ufl.edu)
  • agent
  • Under conditions where the weevils are not effective because water hyacinths are seasonally rooted in mud, the mirid, which lives entirely on leaves, should become a useful additional biological control agent. (weevil.info)
  • It was first introduced to New Zealand in 1931 and to California as an agent of gorse control in the 1950s. (wikipedia.org)
  • Antipredatory Activity of the Weevil Oxyops vitiosa: A Biological Control Agent of Melaleuca quinquenervia Center TD. (wikipedia.org)
  • Smith, L. "Evaluation of the rosette weevil Ceratapion basicorne a new biological control agent of yellow starthistle" (PDF). (wikipedia.org)
  • The most promising biological control agent, the monophagous weevil C. scrobicollis, specifically studied since 2002, has been blocked for introduction into the US repeatedly by the USDA Technical Advisory, TAG, group, despite researchers' many petitions for approval. (wikipedia.org)
  • Eurasian
  • In general there was lots of weevil damage observed, but no change in Eurasian watermilfoil biomass. (wi.gov)
  • Milfoil weevils are commercially available as a management option for Eurasian water milfoil by a firm based in the United States and Canada. (wikipedia.org)
  • Establishing a balance In Candlewood Lake: Response to stocking weevils in Eurasian watermilfoil weed beds" (PDF). (wikipedia.org)
  • Euhrychiopsis lecontei distribution, abundance, and experimental augmentations for Eurasian watermilfoil control in Wisconsin Lakes" (PDF). (wikipedia.org)
  • crop
  • Natural controls reduce costs of raising the high-value forage crop. (chillicothenews.com)
  • Where farmers piecemeal their sweet potato harvest, there can be up to a 10 percent crop loss due to disease and weevils. (wikipedia.org)
  • However, countries producing the greatest crop of nuts, such as Turkey, Italy, France and Spain, are working on alternative methods of control. (wikipedia.org)
  • nematodes
  • Check the beneficial nematode link for more information on the use of entomopathogenic nematodes for various soil pests including root weevils. (oregonstate.edu)
  • The ant is a host to parasites and to a number of pathogens, nematodes, and viruses which have been viewed as potential biological control agents. (wikipedia.org)
  • a yeast formulation which protects stored fruit from post-harvest rot, and a Pseudomonas bacterial biopesticide to control nematodes (microscopic round worms) that infect plant roots. (thefreedictionary.com)
  • eggs
  • Female weevils can live for up to ten months, during which time they may produce from 500 to 1000 eggs at the rate of up to nine eggs per day. (wikipedia.org)
  • roots
  • Inoculation of the roots of spruce, Picea abies , with M. anisopliae spores successfully infected 76% of last-instar black vine weevil that fed on the roots (Bruck 2005). (oregonstate.edu)
  • cotton
  • He identified the cotton square-weevil as the major culprit and found an effective biological control for the pest. (wikipedia.org)
  • The International Cotton Advisory Committee has proposed a control program similar to that used in the U.S. During early years of the weevil's presence, growers sought relatively warm soils and early-ripening cultivars. (wikipedia.org)
  • citation needed] The program has been successful in eradicating boll weevils from all cotton-growing states with the exception of Texas, and most of this state is free of boll weevils. (wikipedia.org)
  • Despite
  • Despite overall similarity, the weevils differ in some morphological details. (wikipedia.org)
  • Despite there being so many controlling agents for that plant, it is currently estimated that adequate control of garlic mustard's invasiveness in portions of the United States where it is problematic can be achieved by the introduction of just two weevils, with C. scrobicollis being the most important of the two. (wikipedia.org)
  • plant
  • We assessed the effect of two biological control agents, the mirid Eccritotarsus catarinensis (Carvalho) and the weevil Neochetina eichhorniae (Warner), singly or in combination, on the competitive ability of their host plant, water hyacinth, Eichhornia crassipes (Mart. (weevil.info)
  • herbicides
  • Within a few years it is hoped that while still present, the doublegee will be much less of a problem and more readily controlled by herbicides. (wa.gov.au)