Biological Control Update Glen Ball USDA, APHIS, PPQ Yuma, Arizona - - PowerPoint PPT Presentation

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Biological Control Update Glen Ball USDA, APHIS, PPQ Yuma, Arizona - - PowerPoint PPT Presentation

United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Giant Salvinia Biological Control Update Glen Ball USDA, APHIS, PPQ Yuma, Arizona United States Department of Agriculture


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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

Giant Salvinia Biological Control Update

Glen Ball USDA, APHIS, PPQ Yuma, Arizona

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine (Damage threshold) OLD POP’N EQUILIBRIUM NEW POP’N EQUILIBRIUM

Time

Weed population/impacts

Release of CBC agent(s) Introduction of pest

Classical biological control

(from Hansen 2007, USDA, APHIS, CPHST)

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

3247 18963 86558 1248 3500 3470 21933 4500 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 2003 2004 2005 2006 2007 2008 2009 2010 2011 Estimated # Individuals Released Year Annual Totals of Cyrtobagous salvinia Released

  • n the Lower Colorado River
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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine River mile 33 in summer of 2005.

Salvinia population infested with Cyrtobagous

  • salvinia. Notice the brown coloration from

decaying plant biomass.

River mile 33 August of 2004.

August 2007

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

August 2007

August 2004

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

Davis Lake August 2011

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

Mitchell’s Camp South N33.27245, W-114.67895 August 17, 2011

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United States Department of Agriculture Animal and Plant Health Inspection Service

Plant Protection and Quarantine

River Mile 31 July 2011