identifying local olympia oyster stocks useful for restoration
TRANSCRIPT
Identifying Local
Olympia Oyster
Stocks Useful for
RestorationJake Heare, Joth Davis, Brady Blake,
Brent Vadopalas, Steven Roberts
16th International Conference on Shellfish Restoration, Charleston, South Carolina, USA
Data, slides, and preprint @ oystergen.es/olympia
Outline
● Backgroundo O. lurida history
o Local stocks?
● Experimento Broodstock/Outplant
o Fieldwork
● Resultso Mortality
o Growth
o Reproduction
● Conclusiono Summary
o Implications
Outline
● Background
● Experiment
● Results
● Conclusion
Brief History of Olympia Oysters
1. Ostrea lurida Native to
Puget Sound
2. Culturally &
Commercially Important
3. Heavy Declines
4. Targeted for Restoration
in Washington
How local should stocks be?
● Scale
● Restoration
Success
Outline
● Background
● Experiment
● Results
● Conclusion
Experiment Basics
● Reciprocal Transplant
● Monitoro 3 Groups
o 4 Sites
Each group was placed in
home site and three
foreign sites.
Fidalgo Bay
Dabob Bay
Manchester
Oyster Bay
Winter Field Work
● Collected Dead
● Counted Live
● Imaged for Size
● Maintained Trays
Summer Field Work
● 15 Weeks
● Reproduction● Number of Brooders
● Growth
● Mortality
Expectations
1. No difference
2. Home Field
Advantage
3. Uber-Oyster
1. All Groups Equally
Successful
2. Groups Only
Successful at
Home
3. One Group
Outperforms
Outline
● Background
● Experiment
● Results
● Conclusion
Aug Oct Dec Feb Apr June
Aug Oct Dec Feb Apr June
1.0
0.5
0
1.0
0.5
0
Manchester
Fidalgo
Mortality
Aug Oct Dec Feb Apr June
1.0
0.5
0
1.0
0.5
0
Aug Oct Dec Feb Apr June
Oyster Bay
Dabob
Dabob Mortality
Oyster Bay
Dabob
50
30
10
50
30
10
50
30
10
Dabob
Group
Fidalgo
Group
Oyster Bay
Group
Manchester
Fidalgo
Oyster Bay
Dabob
Dabob
Fidalgo
Growth
15
10
5
0
15
10
5
0
May June July Aug
May June July Aug
Manchester
Fidalgo
Oyster Bay
Dabob
Group
Fidalgo
Group
Oyster Bay
Group
Reproduction Temperature
X
XX
Outline
● Background
● Experiment
● Results
● Conclusion
Expectations vs. Reality
1. Equality?
2. Home Field Advantage?
3. Uber-Oyster?
4. ???
1. No
2. No
3. No
Summary
● Mortality
o Dabob Survives Better
● Growth
o Dabob Smallest
● Reproduction
o Oyster Bay Most Active (early & more)
Conclusions
Oysters from home site with harsh conditions –
temperature, food, habitat -- survive better
(Dabob Bay).
Oysters from home site with lush conditions –
temperature, food, habitat -- are more
reproductively active* (Oyster Bay).
* Number of brooders and spawning period
does not equal reproductive success.
How local should stocks be?
● Scale
● Restoration
Success
In Puget Sound we found
differences in Olympia oyster
performance,
related to population of origin
habitat conditions.
Acknowledgements
Aquaculture Program
Acknowledgements
Roberts Lab:
● Sam White
● Claire Olson
● Mackenzie Gavery
● Emma Timmins-
Schiffman
● Grace Crandall
● Jonathon Allen
● Etilet Maipi
● Samantha Adams
● Hannah Wear
● Jessica Richards
● Katie Jackson
● Andy Jasonowicz
● Doug Immerman
● Giles Goetz
PSRF:
● Ryan Crim
● Brian Allen
● Betsy Peabody
● Stuart Ryan
Crab Fresh:
● Brendan Mahaffey
● Jeff Koenings
● Rick Tweed
● Hatchery Crew
Fidalgo Marina:
● Einar Sortun
● Yacht Owners
Taylor Shellfish:
● Molly Jackson
● Sara Wykoff
● Ed Jones
NOAA:
● Rick Goetz
● Dive Team
● Netpen Crew
Fagergren Family
Rockpoint Oyster
Company:
● Dick Steele
● Crew
Miscellaneous:
● L. Christine
Savolainen
● Sean Bennet
● Joelle Blais
● Joe Stevick
● Bethany Stevick
● Lisa Crosson
● Alicia Godersky
● Lea Savolainen
Photo Credits:
● Jake Heare
● L. Christine
Savolainen
● Steven Roberts
● Sam Adams
Follow Jake’s Research!
Lab Notebook:
heareresearch.blogspot.com
Twitter:
@HeareBraindIdea
Roberts Lab:
faculty.washington.edu/sr320
Facebook:
facebook.com/pages/Roberts-Lab
Data, slides, and preprint @ oystergen.es/olympia
Temperature and Reproduction
Mar Apr May June July Aug
750
500
250
0
AVG Fidalgo/Dabob Peak Spawn 483.01 DD
AVG Oyster Bay Peak Spawn 331.025 DD
Oyster Bay Site
Fidalgo
Site
151.985