... that constrain our capacity for eco-evolutionary forecasting using reef-building corals as a focal model. We then describe examples of mismatches between the scales of external signals relative to the sensors and signal transduction cascades that initiate and maintain cellular responses. Studying cellular...

...Yvonne Sawall; Anna M. Nicosia; Kathryn McLaughlin; Maysa Ito ABSTRACT Temperature is a key driver of metabolic rates. So far, we know little about potential physiological adjustments of subtropical corals to seasonal temperature changes (>8°C) that substantially exceed temperature fluctuation...

...Melody S. Clark ABSTRACT Much recent marine research has been directed towards understanding the effects of anthropogenic-induced environmental change on marine biodiversity, particularly for those animals with heavily calcified exoskeletons, such as corals, molluscs and urchins. This is because...

...Ronald Osinga; Marlous Derksen-Hooijberg; Tim Wijgerde; Johan A. J. Verreth ABSTRACT Rates of dark respiration and net photosynthesis were measured for six replicate clonal fragments of the stony coral Galaxea fascicularis (Linnaeus 1767), which were incubated under 12 different combinations...

...Katie E. Hillyer; Sergey Tumanov; Silas Villas-Bôas; Simon K. Davy ABSTRACT Bleaching (dinoflagellate symbiont loss) is one of the greatest threats facing coral reefs. The functional cnidarian–dinoflagellate symbiosis, which forms coral reefs, is based on the bi-directional exchange of nutrients...

...Maoz Fine; Shai Sabbah; Nadav Shashar; Ove Hoegh-Guldberg SUMMARY Coral–algae symbiosis is a key feature of tropical corals and is highly dependent on the efficiency with which solar energy is attenuated by the coral. Scleractinian corals are among the most efficient light collectors in nature...

...Eric Béraud; François Gevaert; Cécile Rottier; Christine Ferrier-Pagès SUMMARY The physiological response of the scleractinian coral Turbinaria reniformis to ammonium enrichment (3 μmol l −1 ) was examined at 26°C as well as during a 7 day increase in temperature to 31°C (thermal stress). At 26°C...

...Pascale Tremblay; Renaud Grover; Jean François Maguer; Louis Legendre; Christine Ferrier-Pagès SUMMARY Corals live in symbiosis with dinoflagellates of the genus Symbiodinum . These dinoflagellates translocate a large part of the photosynthetically fixed carbon to the host, which in turn uses...

... patterns as well as environmental influences on immune defenses will provide insight into the persistence of a functional system through adverse conditions. Amongst the most threatened ecosystems are coral reefs, with coral disease epizootics and thermal stress jeopardizing their survival. Immune defenses...

...Tim Wijgerde; Rara Diantari; Muhammad Wahyudin Lewaru; Johan A. J. Verreth; Ronald Osinga SUMMARY Internal and external feeding on zooplankton may provide scleractinian corals with important nutrients. However, the latter process has never been properly quantified. To quantify the dynamics...

...Claire Godinot; Renaud Grover; Denis Allemand; Christine Ferrier-Pagès SUMMARY Several untested aspects of the regulation of inorganic nutrient uptake were examined using nutrient depletion experiments with the symbiotic coral Stylophora pistillata . The total inhibition of phosphate uptake...

... of milliseconds. Shallow coral reefs can be exposed to wave lensing during light-wind, clear-sky conditions, which have been implicated as a secondary cause of mass coral bleaching through light stress. Management strategies to protect small areas of high-value reef from wave-lensed light stress were tested using...

...T. Mass; D. I. Kline; M. Roopin; C. J. Veal; S. Cohen; D. Iluz; O. Levy SUMMARY Depth zonation on coral reefs is largely driven by the amount of downwelling, photosynthetically active radiation (PAR) that is absorbed by the symbiotic algae (zooxanthellae) of corals. The minimum light requirements...

...Virginia M. Weis SUMMARY Cnidarian bleaching is a breakdown in the mutualistic symbiosis between host Cnidarians, such as reef building corals, and their unicellular photosynthetic dinoflagellate symbionts. Bleaching is caused by a variety of environmental stressors, most notably elevated...

...Renaud Grover; Jean-François Maguer; Denis Allemand; Christine Ferrier-Pagès SUMMARY This study was designed to assess the importance of dissolved free amino acids (DFAA) as a nitrogen source for the scleractinian coral Stylophora pistillata . For this purpose, experiments were performed using 15...

...Alan T. Marshall; Peta L. Clode; Robert Russell; Kathryn Prince; Richard Stern SUMMARY It is shown by x-ray microanalysis that a gradient of total intracellular Ca concentration exists from the outer oral ectoderm to the inner skeletogenic calicoblastic ectoderm in the coral Galaxea fascicularis...

...Masaya Morita; Akira Nishikawa; Ayako Nakajima; Akira Iguchi; Kazuhiko Sakai; Akihiro Takemura; Makoto Okuno SUMMARY Corals perform simultaneous mass spawning around the full moon. Most Acropora species release gamete bundles, which are a complex of eggs and sperm, into the seawater. Then, gamete...

...Rinkevich Baruch; Nanthawan Avishai; Claudette Rabinowitz SUMMARY This study evaluates in vitro the effects of UVB irradiation on three cellular compartments of a shallow water coral species. Coral tissues were dissociated by Ca 2+ -Mg 2+ -free artificial seawater. Cell suspensions were divided...

... of the absorbance of light by the endosymbiotic dinoflagellates and the carbonate skeleton. When corals bleach (loose dinoflagellate symbionts),however, the tissue of the corals become highly transparent and photosynthetic microendoliths may be exposed to high levels of both thermal and solar stress. This study...

.... ( 1982 ) found that crude barnacle hatching factor from Balanus balanoides prepared in the presence of the COX inhibitor, aspirin, lacked hatching activity, perhaps indicating COX involvement in its generation. They also noted that dried coral extract from P. homomalla has barnacle hatching factor...