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Effect of short-term exposure to elevated temperatures and light levels on photosynthesis of different host-symbiont combinations in the Aiptasia pallid Symbiodinium symbiosis
Title
Effect of short-term exposure to elevated temperatures and light levels on photosynthesis of different host-symbiont combinations in the Aiptasia pallid Symbiodinium symbiosis.
Creator
Goulet, T. L., Cook, Clayton B., Goulet, D.
Date Issued
2005
PURL
http://purl.flvc.org/FCLA/DT/3343839
Subject Headings
Symbiosis, Dinoflagellates, Zooxanthellales
Format
Document (PDF)
effect of feeding on repopulation of the sea anemone Aiptasia pallida by symbiotic dinoflagellates (zooxanthellae)
Title
The effect of feeding on repopulation of the sea anemone Aiptasia pallida by symbiotic dinoflagellates (zooxanthellae).
Creator
Flinn, Randa N., Florida Atlantic University, Dobkin, Sheldon, Cook, Clayton B.
Abstract/Description
Many marine organisms possess endosymbiotic dinoflagellates called zooxanthellae. Bleaching is the loss of zooxanthellae, but bleached hosts can be repopulated. Little is known about how repopulation is controlled. The sea anemone Aiptasia pallida was used to study the effects of feeding on repopulation. Two groups of aposymbiotic anemones were reinfected with algae from symbiotic clones. One group was fed and the other starved, and counts of algae within each anemone were made at 3 day...
Show moreMany marine organisms possess endosymbiotic dinoflagellates called zooxanthellae. Bleaching is the loss of zooxanthellae, but bleached hosts can be repopulated. Little is known about how repopulation is controlled. The sea anemone Aiptasia pallida was used to study the effects of feeding on repopulation. Two groups of aposymbiotic anemones were reinfected with algae from symbiotic clones. One group was fed and the other starved, and counts of algae within each anemone were made at 3 day intervals for 6 weeks. The experiment was repeated, and results showed that the rate of algal growth did not differ between fed and starved groups. However, starved anemones reached plateau more quickly and lost algal cells after plateau was reached, whereas fed anemones contained more algae and protein. This suggests that starved anemones can support an algal population initially, but cannot maintain it. Space and nutrients are implicated in having a limiting effect on maintenance of symbionts.
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Date Issued
1997
PURL
http://purl.flvc.org/fcla/dt/15495
Subject Headings
Sea anemones, Dinoflagellates, Zooxanthellales
Format
Document (PDF)
Identification of novel cytotoxic agents from the dinoflagellate symbiont of the gorgonian Erythropodium caribaeorum
Title
Identification of novel cytotoxic agents from the dinoflagellate symbiont of the gorgonian Erythropodium caribaeorum.
Creator
Wynter, Sherine, Florida Atlantic University, Kerr, Russell G.
Abstract/Description
Erythropodium caribaeorum is an octocoral known for its production of novel anticancer agents, such as eleutherobin and its analogs as well as for its complex association with symbiotic dinoflagellates (Zooxanthellae; genus Symbiodimum). With this in mind, two sets of experiments were conducted using the extracts of the symbiotic algal cells from Erythropodium caribaeorum: an isolation and characterization of a novel tri-hydroxy sterol and a bioassay-guided isolation of three additional...
Show moreErythropodium caribaeorum is an octocoral known for its production of novel anticancer agents, such as eleutherobin and its analogs as well as for its complex association with symbiotic dinoflagellates (Zooxanthellae; genus Symbiodimum). With this in mind, two sets of experiments were conducted using the extracts of the symbiotic algal cells from Erythropodium caribaeorum: an isolation and characterization of a novel tri-hydroxy sterol and a bioassay-guided isolation of three additional compounds. All compounds exhibit significant bioactivity against the following three cell lines: the human melanoma cell line M14P, the colon cancer cell line RKO and the breast cancer cell line MDA-MB-231. Importantly, this study reports the first isolation of a bioactive polyhydroxy sterol from a gorgonian's symbiont and further suggests that these algae represent a promising sustainable resource for drug discovery.
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Date Issued
2004
PURL
http://purl.flvc.org/fcla/dt/13096
Subject Headings
Alcyonacea, Dinoflagellates, Zooxanthellales, Marine pharmacology
Format
Document (PDF)
Elemental composition of the coral Pocillopora damicornis exposed to elevated seawater ammonium
Title
Elemental composition of the coral Pocillopora damicornis exposed to elevated seawater ammonium.
Creator
Muller-Parker, Gisèle, Cook, Clayton B., D'Elia, C. F.
Date Issued
1994
PURL
http://purl.flvc.org/fau/fd/FA00007225
Subject Headings
Corals, Zooxanthellales, Ammonium, Seawater, Nitrogen, Phosphorus, Carbon
Format
Document (PDF)
Zooxanthellae diversity and abundance in corals at St. Lucie Reef, FL
Title
Zooxanthellae diversity and abundance in corals at St. Lucie Reef, FL.
Creator
Klepac, Courtney, Voss, Joshua, Graduate College
Date Issued
2013-04-12
PURL
http://purl.flvc.org/fcla/dt/3361321
Subject Headings
Zooxanthellales, Zooxanthellate corals, Symbiosis, Saint Lucie Inlet (Fla.)
Format
Document (PDF)
comparison of the thermal bleaching response of the zoanthid Palythoa caribaeorum from three geographically different regions in south Florida
Title
A comparison of the thermal bleaching response of the zoanthid Palythoa caribaeorum from three geographically different regions in south Florida.
Creator
Kemp, Dustin W., Florida Atlantic University, Cook, Clayton B., Brooks, W. Randy, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
Coral bleaching involves the loss of symbiotic algae (zooxanthellae) from reef corals and other cnidarians during periods of environmental stress, particularly elevated temperature. In this study the thermal bleaching responses of the zoanthid Palythoa caribaeorum from three populations along the southeast coast of Florida were compared. Winter (2002--2003) and summer (2003) samples from three geographically separate sites were exposed to increased temperatures and the loss of zooxanthellae...
Show moreCoral bleaching involves the loss of symbiotic algae (zooxanthellae) from reef corals and other cnidarians during periods of environmental stress, particularly elevated temperature. In this study the thermal bleaching responses of the zoanthid Palythoa caribaeorum from three populations along the southeast coast of Florida were compared. Winter (2002--2003) and summer (2003) samples from three geographically separate sites were exposed to increased temperatures and the loss of zooxanthellae was measured. Zooxanthellae populations were sampled and identified using PCR-DGGE. The results showed that samples of P. caribaeorum from reefs that experience smaller annual thermal ranges released the most zooxanthellae. Seasonal comparisons revealed winter samples experienced a greater amount of zooxanthellae loss than summer samples. P. caribaeorum was found to harbor two genetic strains of zooxanthellae, C1 and D1a. Colonies either contained monotypic populations of these, or a combination of both.
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Date Issued
2003
PURL
http://purl.flvc.org/fcla/dt/13053
Subject Headings
Zoanthinaria, Seawater--Thermal properties, Zooxanthellales
Format
Document (PDF)