by brandon watson, c-more scholar intern mentored by dr. robert … · 2009. 1. 26. · by brandon...
TRANSCRIPT
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By Brandon Watson, C-more Scholar InternMentored by Dr. Robert Richmond
Kewalo Marine Lab12/10/08
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Scleractinians: *Phylum: Cnidaria
Class: AnthozoaOrder: Scleractinia (stony corals)
*Pocillopora damicornis:*Hermatypic*Planulae larvae brooder* Monthly planulation*Good mobility*Approximately 1.6 mm
*Porites hawaiiensis:*Ahermatypic*Planulae brooder*Daily/ weekly planulae brooder*Negatively buoyant larvae*Approximately .8 mm 2
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Benzo-a-pyrene: BaP (C20H12)
*A hydrocarbon derived from coal and gasoline products.*Known carcinogen
*Terrestrial: Burning coal, run off, illegal dumping, etc...*Marine: Boats, spills, etc...
Dimethyl sulfoxide: (C2H6OS)*A carrier solvent used in experiments to reduce volatilization of benzo-a-pyrene
and to distribute it in the filtered salt water proportionally.
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Larval collection:
*Pocillopora damicornis:
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Larval collection:
*Porites hawaiiensis:
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Larval settlement:
*Pocillopora damicornis:
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Larval settlement:
*Porites hawaiiensis:
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Larval Exposure:
*Filtered sea water- Filtered with a 2 micron filter
*Benzo-a-pyrene-Concentration A- 1 micro gram per literConcentration B- 2 micro gram per liter
*DMSO- .1% per liter (weight/ volume)
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Modes of Measurement of Growth:
*Image J :
*Surface area
*Calcium carbonate
* Calyx formation
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Measurement of Growth:
A. Normal calcification and septae forming.
B. Reduced calcification and septae formation and discontinuous radial formation.
Oral:Dissection microscope
Aboral:Inverted
microscope
A.
A.
B.
B.
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Larval collection:
*Pocillopora damicornis
Graph
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Larval collection:
*Porites hawaiiensis
Graph
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Larval settlement:
*Pocillopora damicornis
Graph
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Larval settlement:
*Porites hawaiiensis
Graph
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Larval Exposure: No data collected yet.
*Pocillopora damicornis needs more larvae collected and settled.
*Porites hawaiiensis is ready to be exposed to:
Two controls: filtered sea water and filtered water plus DMSO.
Two experiments: A:1 microgram/l benzo-a-pyrene plus .1% DMSO per liter.B: 2 microgram/ l benzo-a-pyrene plus .1% DMSO per liter.
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Pocillopora damicornis:*One settled out of fifty.*Died due to hyper saline conditions exposed.
in settlement chamber.(not covered container, 26 Celsius)
Porites hawaiiensis :*Twenty planulae larvae settled and metamorphosed.*Due to high rate of planulation on a daily basis.*Improved experiment (covered container, 21 Celsius)
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*At what salinity does planulae larvae die?
*At what temperature does planulae larvae die at?
*What is the primary mode of dispersal for Porites hawaiiensis, short and long range?
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Kewalo Marine Lab:Dr. Robert RichmondJon MartinezLuc RougeeSean McDuffSean Knutson
C-more Program:Dr. Barbara GibsonBarbKim WheerslingKate
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Castro, Peter, and Michael E. Huber. Marine Biology. New York: McGraw-Hill Companies, The, 2007. 307-19.
Dubinsky, Z., ed. Coral Reefs. St. Louis: Elsevier Science, 1990. 133-96.
Gulko, David. Hawaiian Coral Reef Ecology. Grand Rapids: Mutual LLC, 1999. 59-90.
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