Quantcast

Cold weather weevil, salvinia eating insects survive cold - KTBS.com - Shreveport, LA News, Weather and Sports

Cold weather weevil, salvinia eating insects survive cold

Posted: Updated:
BOSSIER CITY, La. (KTBS) -

 

Brazilian weevils, natural predator of giant salvinia, have been used to combat the invasive plant in Louisiana for years. The insects usually die in North Louisiana due to cold and can't provide much of an impact on salvinia choked waters. LSU Ag researchers have been breeding the weevils to find some that survive the cold. They recently found a promising colony on Cross Lake. A colony of about 20 weevils survived last month's cold snap.

Steve Micinski, an associate professor, says the weevils survived in temperatures that lasted below freezing for around 40 hours. This is the first documented weevil colony to do so in our area. The survivors may breed and create a population of giant salvinia killers that can live year-round in local waters.

"However, it will depend on how cold tolerant they are," Micinski said. "They may not be cold tolerant enough."

Micinski says the weevils will be tested to make sure they actually are cold tolerant before being released onto salvinia choked water bodies. He says the weevils eat salvinia, while their larva burrow into the plants' roots.

"It's that killing of the root system by the larva that actually does the majority of the damage to the salvinia," Micinski said.

Micinski says the weevils only eat salvinia and claims they don't pose a risk to crops or native plants.

"They're not a problem on anything else," Micinski said. "They require the salvinia to survive."

If the weevils do manage to populate, Micinski says they won't kill-off salvinia for good. However, they should reduce coverage to just about two feet from shorelines.

Micinski stresses the weevils won't lessen salvinia overnight. It may take years to provide a noticeable and beneficial impact.

 

  • ArkLaTex SlideshowsMore>>

  • ArkLaTex Adoptable Pets

    ArkLaTex Adoptable Pets

    Sunday, April 20 2014 8:50 PM EDT2014-04-21 00:50:49 GMT
    There are lots of animals in the ArkLaTex who are looking for that perfect home.
    There are lots of animals in the ArkLaTex who are looking for that perfect home.
  • Easter Bunnies

    Easter Bunnies

    Saturday, April 19 2014 6:26 AM EDT2014-04-19 10:26:06 GMT
    Thank you to all of our viewers who sent us pictures of your little Easter bunnies.
    Thank you to all of our viewers who sent us pictures of your little Easter bunnies.
  • Celebrate Education 2014

    Celebrate Education 2014

    Thursday, April 17 2014 3:30 PM EDT2014-04-17 19:30:00 GMT
    Community Projects Director Jan Elkins with donors for the KTBS 3 St. Jude Dream Home.
    CELEBRATE EDUCATION, and it begins next week at the Shreveport Convention Center.
  • Assignment EducationMore>>

  • Make way for changes in Caddo schools

    Make way for changes in Caddo schools

    Tuesday, April 22 2014 11:53 AM EDT2014-04-22 15:53:02 GMT
    Dr. Lamar GoreeDr. Lamar Goree
    Caddo Parish School Superintendent Dr. Lamar Goree unveiled the "Reimagine Our Schools" Campaign Tuesday morning.
    Caddo Parish School Superintendent Dr. Lamar Goree unveiled the "Reimagine Our Schools" Campaign Tuesday morning.
  • Gov. Beebe, sculptor to receive honorary degrees

    Gov. Beebe, sculptor to receive honorary degrees

    Tuesday, April 22 2014 5:24 AM EDT2014-04-22 09:24:22 GMT
    Gov. Mike Beebe and sculptor Anita Huffington will be presented honorary degrees from the University of Arkansas during the university's May 10 commencement ceremony.
    Gov. Mike Beebe and sculptor Anita Huffington will be presented honorary degrees from the University of Arkansas during the university's May 10 commencement ceremony.
  • Caddo superintendent addresses Fair Park principal change

    Caddo superintendent addresses Fair Park principal change

    Monday, April 21 2014 11:21 PM EDT2014-04-22 03:21:37 GMT
    Caddo Superintendent Goree addresses concerned Fair Park High parentsCaddo Superintendent Goree addresses concerned Fair Park High parents
    Caddo Superintendent Dr. Theodis Lamar Goree spent about an hour taking questions at Fair Park High Monday evening, nearly all of which centered on the decision to replace Principal James Outley.
    Caddo Superintendent Dr. Theodis Lamar Goree spent about an hour taking questions at Fair Park High Monday evening, nearly all of which centered on the decision to replace Principal James Outley.
  • NationalMore>>

  • High court tosses $3.4M award to child porn victim

    High court tosses $3.4M award to child porn victim

    Wednesday, April 23 2014 10:44 AM EDT2014-04-23 14:44:40 GMT
    The Supreme Court has thrown out a nearly $3.4 million judgment against a man convicted of possessing two pornographic images of a child that have been seen by thousands of online viewers.
    The Supreme Court on Wednesday said a federal law limits how much money victims of child pornography can recover from people who viewed their images online, throwing out a nearly $3.4 million judgment in favor of a woman...
  • Judge to mull Chelsea Manning name change request

    Judge to mull Chelsea Manning name change request

    Wednesday, April 23 2014 10:25 AM EDT2014-04-23 14:25:27 GMT
    A Kansas judge has scheduled a hearing to consider Army Pfc. Chelsea Manning's petition to legally change her name from Bradley Manning.
    A Kansas judge will on Wednesday consider Army Pfc. Chelsea Manning's petition to legally change her name from Bradley, as she serves a 35-year sentence for passing classified U.S. government information to the...
  • Spacewalking astronauts tackle urgent repair job

    Spacewalking astronauts tackle urgent repair job

    Wednesday, April 23 2014 10:15 AM EDT2014-04-23 14:15:02 GMT
    Space station astronauts are taking a spacewalk to replace a dead computer and get their orbiting home back up to full strength.
    Space station astronauts are taking a spacewalk to replace a dead computer and get their orbiting home back up to full strength.
  • KTBS 3 News Tips

    Send your news tip or story idea to the KTBS 3 Newsroom.  Enter your email address below to get started.

    * denotes required fields
    We're sorry, but only one entry is allowed per person.
    Thank you for your continued interest.

    Thank you for your submission to KTBS 3 News.  A member of our staff may contact you for more information.

Share Your Images
Powered by WorldNow
    Powered by WorldNow
    All content © Copyright 2000 - 2014 Worldnow and KTBS. All Rights Reserved. For more information on this site, please read our Privacy Policy and Terms of Service.
    Advertising | EEO Public File | KTBS 3 Public File | KPXJ 21 Public File