Pine Lake Invasive Crayfish Removal

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Pine Lake volunteer effort information

Pine Lake volunteer effort information

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  • 1. Pine  Lake  Invasive  Crayfish  Removal     Informa6on  for  registered  volunteers  only   Julian  Olden  &  Lauren  Kuehne     School  of  Aqua,c  and  Fishery  Sciences   University  of  Washington  
  • 2. Topics     Background    Why  are  we  here?    What’s  my  role?     Ques>ons  
  • 3. Signal  Crayfish   E.  Larson  
  • 4. Red  swamp  crayfish  •  Red  swamp  crayfish  is  the   most  widespread  invasive   crayfish  in  the  United  States   and  the  world.  
  • 5. Red  swamp  crayfish  in   Washington  2000:  first  discovered  in  Pine  Lake   Silver  during  a  WDFW  fish  survey  (Karl  Mueller,  2001)   Steel     Easter   North     Beaver  2007-­‐2012:  We  surveyed  120+  lakes  in     Geneva  in  western  WA  and  discovered  9  addi>onal  invaded  lakes.   Pine   Five  Mile   Trout   Surprise  
  • 6. How  crayfish  make  a  living  
  • 7. Signal  vs.  red  swamp  crayfish  Signal  crayfish   Red  swamp  crayfish  •  Sexually  maturity:  2  years   •  Sexually  maturity:  1.5  years  •  Ma>ng  occurs  late  summer   •  Ma>ng  occurs  all  summer  •  50-­‐200  eggs/female   •  400-­‐600  eggs/female  •  Incuba>on  >me:  10  months   •  Incuba>on  >me:  1-­‐2  •  Lifespan:  4-­‐8  years   months   •  Lifespan:  2-­‐4  years     •  Very  aggressive  and  high   ecological  impacts   K.  Mueller  
  • 8. Goal  •  To  control  the  popula>on  of  red  swamp  crayfish  in   Pine  Lake  using  the  first  volunteer-­‐based  whole-­‐lake   removal  •  Enhance  the  health  of  na>ve  signal  crayfish  and  fish   (trout,  bass,  sunfish)  in  Pine  Lake  •  Promote  public  educa>on  regarding    invasive  species  •  Serve  as  a  model  for  other  future  removal  efforts  
  • 9. Is  this  even  possible?     Sparkling  Lake,   WI   K.  Hein  
  • 10. Yes,  it  is  possible  for  Pine  Lake   Rou>ne  Olden   survey   loca>ons  
  • 11. Crayfish  trends  over  6me   12  Ra6o  of  Red  Swamp  to  Signal   10   8   First  survey   Caryfish   (Karl  Mueller)   6   Red  swamp   4   discovered   2   0   2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012   Olden  lab  surveys  
  • 12. Protocols  •  Dura>on:  Today-­‐ November  30th,  2013  •  Set  a  weekly  schedule  •  We  will  be  on  the  lake   June,  July,  Aug,  Sept,   (middle  of  month)  •  Mid-­‐summer  and  end-­‐ summer  checkin  
  • 13. Red  swamp  crayfish  
  • 14. Female  crayfish  with  eggs  
  • 15. Male   Female  
  • 16. Interested  but   haven’t   registered?     Please  email   Julian  at  olden@uw.edu