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Quagga and Zebra Mussels

Quagga and Zebra Mussels. Picture from http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/zebra_gallery.asp. Quagga mussels were found on the hull of a boat at Lake Tahoe on August 22. Quagga and Zebra Mussels. Quagga mussel. Zebra mussel. 2 inches. 1 inch.

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Quagga and Zebra Mussels

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  1. Quagga and Zebra Mussels Picture from http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/zebra_gallery.asp

  2. Quagga mussels were found on the hull of a boat at Lake Tahoe on August 22.

  3. Quagga and Zebra Mussels Quagga mussel Zebra mussel 2 inches 1 inch Picture from http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/quagga_gallery.asp

  4. 1980s 2008 2007 2007-8

  5. Zebra/quagga mussels are typically transported from one water body to another on boats. Adult and juvenile mussels are also carried downstream by natural currents. Remember: Larvae are microscopic and can be easily transported. Adult zebra/quagga mussels can survive out of the water for up to a week. How are the mussels being spread? Pictures from http://cache.daylife.com/imageserve/0bJg1oR98zfk2/610x.jpg http://www.keeplakepowellmusselfree.com/images/500_Sailboat4.jpg

  6.  • Reproduce quickly and in very large numbers: up to 1 million eggs per female in one spawning season. • Colonize and coat hard and soft surfaces, including boat hulls, propellers, anchors, docks, and boat trailers, piers, pilings, rocks, cables up to 400 feet deep. • Attach to aquatic plants, sediment, and native mussels. • Infiltrate and damage boat engines and steering components. • Threaten water treatment plants, hydroelectric facilities, and reservoirs. • Disrupt the food chain by filtering the water column of phytoplankton and out-competing other species. • Change water conditions and cause oxygen loss. • Result in infested waters being closed to boating and fishing. Quagga/zebra mussels can….

  7. Impacts…. Pictures from: http://www.zeestop.com/images/mussels_in_pipe.jpg http://upload.wikimedia.org/wikipedia/commons/3/3d/Zebra_mussel_GLERL_4.jpg http://2008.heraldextra.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=114961&g2_serialNumber=2 http://www.iisgcp.org/edk-12/EXOTICSP/images/zm-eatm3.jpg http://dls.fws.gov/DATA/files/852C1693-960E-4BCE-8D81C091E66BD445.jpg

  8. From 1993-1999, the zebra mussel infestation of the Great Lakes area cost the power industry $3.1 billion. • In the same six-year period, the economic impact on industries, businesses, and communities was more than $5 billion. • In California, spread of the mussels threatens: • water delivery systems • hydroelectric facilities • agriculture • recreational boating and fishing • the environment Economic impact of quagga/zebra mussels Picture from http://www.valleywater.org/media/2008/2038221706_36d23b29e1_o.jpg

  9. Education • Clean, drain, and dry! • Inspections • Restrictions What can be done to prevent the spread of mussels?

  10. www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=3875

  11. Fish & Game Regional Contact: Jason Roberts JDROBERTS@dfg.ca.gov Office: (916) 358-2895 Fax: (916) 358-2912 Picture from http://www.practicalfishkeeping.co.uk/pfk/images/cc_dan_minchin_zebramussel.jpg

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