scholarly journals Nutrients, Signals, and Photosynthate Release by Symbiotic Algae (The Impact of Taurine on the Dinoflagellate Alga Symbiodinium from the Sea Anemone Aiptasia pulchella)

1997 ◽  
Vol 114 (2) ◽  
pp. 631-636 ◽  
Author(s):  
J. T. Wang ◽  
A. E. Douglas
Keyword(s):  
Sea Anemone ◽  
Symbiotic Algae ◽  
Aiptasia Pulchella ◽  
The Impact

Antarctic sea anemone distribution, abundance and relationships with habitat composition, community structure and anthropogenic disturbance

2020 ◽  
Vol 32 (3) ◽  
pp. 186-198
Author(s):  
Leslie A. Watson ◽  
Jonathan S. Stark ◽  
Glenn Johnstone ◽  
Erik Wapstra ◽  
Karen Miller
Keyword(s):  
Anthropogenic Disturbance ◽  
Habitat Preferences ◽  
Sea Anemone ◽  
Disposal Site ◽  
Sea Anemones ◽  
Waste Disposal Site ◽  
Near Shore ◽  
Diverse Community ◽  
Rocky Habitats ◽  
The Impact

AbstractUnderstanding the distribution, abundance and habitat preferences of species in the Southern Ocean provides a foundation for assessing the impacts of environmental change and anthropogenic disturbance on Antarctic ecosystems. In near-shore waters at Casey and Davis Stations, photoquadrat surveys were used to determine sea anemone distribution and abundance, habitat preferences, associations with other species and the impact of human disturbance on sea anemone distribution. Two distinct sea anemone morphotypes were found in this study: large sea anemones that require hard substrate for attachment and small, burrowing sea anemones found in muddy sediment. The large sea anemones were found in rocky habitats, with the exception of some sedimentary habitats where other biota were used as substrate. The large sea anemones were associated with a diverse community of epibenthic species found in rocky habitats. The burrowing sea anemones were associated with a less diverse assemblage of sediment-dwelling epibenthos. At Casey Station, sea anemones were more abundant in habitats adjacent to a former waste disposal site than at control sites. The reason for this is not yet known, but may be due to high organic matter inputs or, alternatively, a longer sea ice duration providing protection from ice scour.

Amino acid synthesis in the symbiotic sea anemone Aiptasia pulchella

1998 ◽  
Vol 131 (1) ◽  
pp. 83-93 ◽  
Author(s):  
R. Swanson ◽  
O. Hoegh-Guldberg
Keyword(s):  
Amino Acid ◽  
Acid Synthesis ◽  
Sea Anemone ◽  
Amino Acid Synthesis ◽  
Aiptasia Pulchella

Cellular mechanisms underlying temperature-induced bleaching in the tropical sea anemone Aiptasia pulchella

2001 ◽  
Vol 204 (20) ◽  
pp. 3443-3456 ◽  
Author(s):  
Sara J. Sawyer ◽  
Leonard Muscatine
Keyword(s):  
Protein Phosphorylation ◽  
Plasma Membranes ◽  
Sea Anemone ◽  
Host Cells ◽  
Pocillopora Damicornis ◽  
Cellular Mechanisms ◽  
Paramagnetic Resonance ◽  
Aiptasia Pulchella ◽  
Tropical Sea ◽  
And Control

SUMMARY Temperature-induced bleaching in symbiotic cnidarians is a result of the detachment and loss of host cells containing symbiotic algae. We tested the hypothesis that host cell detachment is evoked through a membrane thermotropic event causing an increase in intracellular calcium concentration, [Ca2+]i, which could then cause collapse of the cytoskeleton and perturb cell adhesion. Electron paramagnetic resonance measurements of plasma membranes from the tropical sea anemone Aiptasia pulchella and the Hawaiian coral Pocillopora damicornis labeled with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) revealed no membrane thermotropic event. In addition, intracellular imaging using Fura-2AM as well as labeling anemones with 45Ca revealed no significant change in [Ca2+]i. However, bleaching could be evoked at ambient temperature with 25 mmol l–1 caffeine without affecting [Ca2+]i. [Ca2+]i could be altered with ionomycin in isolated host cells, but ionomycin could not induce bleaching in A. pulchella. As caffeine can affect levels of intracellular protein phosphorylation, the ability of other agents that alter intracellular levels of protein phosphorylation to evoke bleaching was investigated. The protein phosphatase inhibitor vanadate could induce bleaching in A. pulchella. Two-dimensional gels of 32P-labeled proteins from cold-shocked, caffeine-treated and control anemones show that both temperature shock and caffeine alter the array of phosphorylated host soluble proteins. We conclude that cnidarian bleaching is linked to a temperature-induced alteration in protein phosphorylation.

scholarly journals LOW TEMPERATURE EVOKES RAPID EXOCYTOSIS OF SYMBIOTIC ALGAE BY A SEA ANEMONE

1987 ◽  
Vol 172 (2) ◽  
pp. 246-263 ◽  
Author(s):  
R. GRANT STEEN ◽  
L. MUSCATINE
Keyword(s):  
Low Temperature ◽  
Sea Anemone ◽  
Symbiotic Algae

scholarly journals Tenacibaculum aiptasiae sp. nov., isolated from a sea anemone Aiptasia pulchella

2008 ◽  
Vol 58 (4) ◽  
pp. 761-766 ◽  
Author(s):  
J.-T. Wang ◽  
Y.-J. Chou ◽  
J.-H. Chou ◽  
C. A. Chen ◽  
W.-M. Chen
Keyword(s):  
Sea Anemone ◽  
Aiptasia Pulchella
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