Trapping Rusty Crayfish- Passe · Dumbbell Lake 2015 Trapping Results Results -32 Crayfish per Trap...
Transcript of Trapping Rusty Crayfish- Passe · Dumbbell Lake 2015 Trapping Results Results -32 Crayfish per Trap...
Lake County
Crayfish Trapping with Local Youth Group
20 kids, 5-15 years old
That was the best "field trip" ever. I'm not kidding! The kids had a blast! They were so into it!
Lake County
Local Festivalsandand
Farmers Markets
Partnering with:•Minnesota Sea Grant•MN DNR•1854 Treaty Authority•County Staffy•Lake Associations
Lake, Cook Counties
Parades
St. Urho’s Day, Finland
Fishermen’s Picnic, Grand Marais
Heritage Festival, Two Harbors
Lake, St. Louis and Cook CountiesMonitoring Calcium LevelsMonitoring Calcium Levels
Slowing the Spread of the Invasive Rusty Crayfish (Orconectes rusticus)
Aquatic Invaders Summit IISummit IIOctober 6, 2016
Derrick PasseLake County SWCD
Origin – Ohio River BasinSpread by - Bait Bucket ReleaseSpread by Bait Bucket Release
- Study Specimen Release- Crayfish Boils- Water Gardens
CRAYFISH OF MINNESOTA (ADAPTED FROM WI Crayfish photo identification guide June 2012)
3. CURVED SEAMS ON BACK TOUCHING IN CENTER
Red Swamp C fi hCrayfish
Procambarus clarkii
Calico Crayfish (Orconectes immunis) Virile Crayfish (Orconectes virilis)
1. RED SPOTS ON CLAWS
2. BLACK STRIPE ON TAIL
Procambarus clarkii
5. MANY SMALL BUMPS ON SIDES
Found Sept 2016
4. ROSTRUM WEDGE
Found Sept 2016 in Tilde Lake, Clay County
Rusty Crayfish (Orconectes rusticus)Northern Clearwater Crayfish (Orconectes propinquus)
3. CLAW TIPS ORANGE WITH BLACK RING
WEDGE SHAPEDClay County
Rusty Crayfish Infestations (and Research)
in the Rainy-Lake of the Woods Watershed
WHY?Impacts • Voracious
• Denude entire bays of aquatic vegetation (Wild Rice)Denude entire bays of aquatic vegetation (Wild Rice)• Large and Aggressive
• Displace Native Crayfish
Rusty Crayfish Infested Lakes
Dumbbell Lake Vicinity
Dumbbell Lake 2005 Trapping Results
Results – 0 Crayfish per Trap Median (2) Total
Dumbbell Lake 2011 Trapping Results
Results - 15 Crayfish per Trap (Median), 166 Total
Dumbbell Lake 2015 Trapping Results
Results - 32 Crayfish per Trap (Median), 503 Total
Initiative Foundation
Stop the Spread of Rusty Crayfish into the BWCAW
Grant 2015 -Social Trapping-Public Outreach-Intensive Trapping
Boundary Waters Canoe Area WildWilderness
WICOLA
Social Trapping on
Recruit Lake Association members to trap Rusty Crayfish on their Property
White Iron Chain of Lakes
on their Property
Public Outreach and
Education
Partnering with:•Minnesota Sea Grant•MN DNR1854 Treat A thorit•1854 Treaty Authority
•County Staff•Lake Associations
Public Perceptionp
Rusty Crayfish Are:Are:
PUBLIC PERCEPTION OF RUSTY CRAYFISH
ELY BLUEBERRY FESTIVAL 7 2015FESTIVAL 7-2015
Ambivalent (red, odd, unique)
Negative (annoying, mean, nasty, invasive)
Positive (cool, tasty, delicious)
12%17%
71%
Results of Survey at Ely Blueberry Festival 2015.
Intensive Crayfish TrappingIntensive Crayfish Trapping
Summer 2015 and 2016 –4 V ili C it C ll4 Vermilion Community College Students will enter the BWCAW Daily on the Kawishiwi River and set 100 Traps for Rusty Crayfish.p y y
Intensive Crayfish Trapping – North Kawishiwi RiverKawishiwi River
Intensive CrayfishCrayfish Trapping
S th-South Kawishiwi
River
Rusty Crayfish Infestations (and Research)
in the International Rainy-Lake of the Woods Watershed
Unanswered Questions:•Where else are they?•What is their impact to Vegetation? Fishery? •Is biological control possible?•Do they self regulate?•Is trapping a feasible control mechanism?
Contact Information:Contact Information:Derrick Passe763 [email protected]
Thanks to my Collaborators:USFSUSFSWhite Iron Chain of Lakes AssociationMinnesota Sea GrantWhite Iron Chain of Lakes AssociationMinnesota Sea GrantVermilion Community CollegeInitiative FoundationVermilion Community CollegeInitiative Foundation