Pine Lake volunteer effort information

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

4. Signal
Crayfish
E.
Larson

5. Red
swamp
crayfish
• Red
swamp
crayfish
is
the
most
widespread
invasive
crayfish
in
the
United
States
and
the
world.

6. 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

7. How
crayfish
make
a
living

10. 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

11. 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

12. Is
this
even
possible?
Sparkling
Lake,
WI
K.
Hein

13. Yes,
it
is
possible
for
Pine
Lake
Rou>ne
Olden
survey
loca>ons

14. 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

15. 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

17. Red
swamp
crayfish

18. Female
crayfish
with
eggs

20. Male
Female

24. Interested
but
haven’t
registered?
Please
email
Julian
at
olden@uw.edu