bythotrephes cederstroemi (bc) & cercopagis pengoi (cp) neil j. elms – 4/13/11
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The Water “Fleas”. Bythotrephes cederstroemi (BC) & Cercopagis pengoi (CP) Neil J. Elms – 4/13/11 BIO 108R - Dr. Skinner. Spiny and Fishhook “Flea” Characteristics. 1 – 5 cm long Eye Spot Egg Pouch Tail = 70% of Total Length 1- 4 Tail Barbs Mandibles Mistaken for Daphnia. - PowerPoint PPT PresentationTRANSCRIPT
Bythotrephes cederstroemi (BC) & Cercopagis pengoi (CP)Neil J. Elms – 4/13/11 BIO 108R - Dr. Skinner
TaxonomyKingdom – AnimalPhylum – ArthropodaSubphylum – CrustaceaClass – BranchiopodaSubclass – PhyllopodaOrder – DiplostracaInfraorder – OnychopodaFamily - Cerpagididae
• 1 – 5 cm long• Eye Spot• Egg Pouch• Tail = 70% of Total Length• 1- 4 Tail Barbs• Mandibles• Mistaken for Daphnia
• Eurasia – Black, Caspian, Aral, Azov, & Baltic Seas• Great Lakes 1980’s - 90’s; Finger Lakes 2000• Ballast Tank Stowaways
• United States• Commercial and Sport Fishing Gear• Nets, Downriggers, Live Wells
• Spiny
• Fishhook
• Days to a Week Long Life Span• Both, Sexually and Asexually• Up to 13 Clones Every 10 Days (May thru September)• Brood Pouch
• Developing Embryos• Female Clones (May thru August)
• Dies After Cloning• Resting / Dormant Eggs
• Male and/or Female (1-2 Eggs)
• Eat and Compete with Native Zooplankton (Daphnia)• Rapid Reproduction / Cloning Leads to Eutrophication• Comfortable in Clear and Brackish / Fresh and Salt• Success at Various Water Columns• Adaptive
• No Tail Molts to Ensure Continuous Protection• Temperature Regulates Population• Dormant Eggs Carried Thru Poor Conditions• Size
• Avoided by Fry• Choke and Suffocate Fry with Tail Barbs
• Depletes Food Resources for Larger Fish, Birds and Humans
• No Known Method of Control or EradicationPractice “Good Fishing Hygiene”
www.caspianenvironment.org/biodb/eng/zooplankton/Cercopagis%20pengoi/main.htm
www.westsidenews.net/OldSite/westside/news/2001/0122/features/lakestudy.html
www.great-lakes.net/envt/flora-fauna/invasive/spinyflea.html
www.dnr.wi.gov/org/caer/ce/eek/critter/insect/waterflea.htm
www.glerl.noaa.gov/seagrant/cercopagis/cercopagisID.htm
www.epa.gov/grtlakes/monitoring/exotics/cercopagis.html
www.gfawesome.org/mad_science/activities.html
www.seagrant.umn.edu/education/index.html
www.epa.gov/region5/enved/resources.html
www.seagrant.umn.edu/exotics/spiny.html
www.dnr.wi.gov/invasives/fact/spiny.htm
www.iiseagrant.org/EXOTICSP/
Bythotrephes cederstroemi (BC) & Cercopagis pengoi (CP)Neil J. Elms – 4/13/11 BIO 108R - Dr. Skinner