Population dynamics and reproductive phenology of the non ... UCONN Development... · sporophytes...
Transcript of Population dynamics and reproductive phenology of the non ... UCONN Development... · sporophytes...
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Charles Yarish1
Jang K. Kim1,4
Simona Augyte1
Sarah Redmond1,3
Paul Dobbins2
Yuanzi Huo1,5
George Kraemer1,6
1Department of Ecology and Evolutionary Biology
University of Connecticut2Ocean Approved, LLC.
3Maine Sea Grant, University of Maine4 Incheon National University5Shanghai Ocean University
6Purchase College
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Uses of Seaweeds
•Food•Feed
•Fertilizer
•Medicine•Cosmetics
•Textile
•Paper•Leather
•Major sources of phycocolloids
(alginates, carrageenans & agars)•Biofuels
(courtesy of Ocean Approved)
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• Class Phaeophyceae (Brown Seaweeds)
• Order Laminariales
-Family Laminariaceae
-Genus: Saccharina
-Family Alariaceae
www.algaebase.org
S. latissima
S. digitata
Alaria
S. japonica
Nereocystis
Macrocystis
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Data from China Fishery Statistical Year Book (2003-2013)
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Kelp Cultivation in China
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Grow Out Stage-Greenhouse:Shallow tanks with running seawater, shade light to 25-50µE-Laboratory/Indoor facility
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How Do You Grow Kelp? Initiate Laboratory Cultures
Collect Wild Specimens with Desirable Characters
Isolate Spores
Produce Mass Cultures of Appropriate Life History Stage
Induce Spore Release or Hybridization
Seed Lines for Out-planting
Grow Out
Harvest
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Economically and ecologically important kelps of the Northeast.
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Percent of Saccharina latissimasporophytes with sorus tissue. Data derived from tagged populations in Long Island Sound. (Yarish et al, 1990)
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Wild-sourced seeding with meiospores
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Productivity
~ 1,752 kg per 100 m longline (Dec. – May growing
season)
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Productivity (sugar kelp)
*29.2 – 116.7 MT FW ha-1
(Dec. – May growing season)
* Assumption: 1.5 or 6.0 m spacing between longlines
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Productivity, Tissue Nitrogen and Nitrogen Removal
Western LIS
Western LIS
Western LIS
• Saccharina latissima
• 2012-2013 growing season
• 1.5 m spacing of lines
• Sugar kelp: ~180 kg N ha-1
(Dec. – May)
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Nursery(1 month)
Open Water(5 months)
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Hybridization techniques
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Hybridization techniques
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Hybridization techniques
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Hybridization techniques
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Hybridization techniques
mass-cultivation
clone cultures under red light Gametophyte isolation
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Hybridization techniques
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Hybridization techniques
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Advantages:•Long term maintenance of young sporophytes•Clean cultures can be maintained at high densities with minimum maintenance •Use to select for fastest growing plants in crossing experimentsDisadvantages:•Plants must be manually attached to seed string for out-planting
Tumble Culture of Kelp
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Hybridization techniques
X
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Hybridization techniques
X
L L S S
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Hybridization techniques
X
S S
L L
Crosses: X
S S
S L X
L S X
L LX
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Hybridization techniques
S S X
S L X
L S X
L LX
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Hybridization techniques
S S X
S L X
L S X
L LX
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Hybridization techniques
S S X
S L X
L S X
L LX
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Saccharina latissima forma angustissimafrom southern Maine
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Saccharina latissima forma angustissimafrom southern Maine
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Wild-sourced seeding vs. Hybridization
Wild-sourced seeding Hybridization techniques
Nursery technology
simple complex
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Wild-sourced seeding vs. HybridizationWild-sourced seeding Hybridization techniques
Nursery technology
simple complex
Seeding timing depending on wild material
flexible
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Wild-sourced seeding vs. Hybridization
Wild-sourced seeding Hybridization techniques
Nursery technology
simple complex
Seeding timing depending on wild material
flexible
Offspring morphology
unpredictable predictable
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Where to buy and how much?
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Project Partners
• GreenWave & Noank Aquaculture Cooperative
• Marine Biology Laboratory (Scott Lindell)
• C.A. Goudey & Associates (Cliff Goudey)
• Bridgeport Regional Aquaculture Science and Technology Education
Center (BRASTEC)
• Growers: Ocean Approved, Thimble Island Oyster Co., DJ King
Lobsters, Maine Fresh Sea Farms, Maine Coast Sea Vegetables
• Norwalk Community College
• UCONN School of Business
• Woods Hole Oceanographic Institution (Hauke Kite-Powell)
• Purchase College
• Rocking the Boat
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• Connecticut Sea Grant College Program
• NOAA SBIR I and II (Ocean Approved)
• U.S. EPA Long Island Sound Study's Long Island Sound
Futures Fund, National Fish and Wildlife Foundation
• Maine Aquaculture Innovation Center
• U.S. Department of Agriculture, National Institute of
Food and Agriculture (NIFA)
• University of Connecticut
Acknowledgements