identifying local olympia oyster stocks useful for restoration

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