| the presence of biomarker enzymes of selected scleractinian corals of palk bay, southeast coast of india. | the health and existence of coral reefs are in danger by an increasing range of environmental and anthropogenic impacts. the causes of coral reef decline include worldwide climate change, shoreline development, habitat destruction, pollution, sedimentation and overexploitation. these disasters have contributed to an estimated loss of 27% of the reefs. if the current pressure continues unabated, the estimated loss of coral reef will be about 60% by the year 2030. therefore, the present study was ... | 2014 | 25215288 |
| molecular phylogeny of the robust clade (faviidae, mussidae, merulinidae, and pectiniidae): an indian ocean perspective. | recent phylogenetic analyses have demonstrated the limits of traditional coral taxonomy based solely on skeletal morphology. in this phylogenetic context, faviidae and mussidae are ecologically dominant families comprising one third of scleractinian reef coral genera, but their phylogenies remain partially unresolved. many of their taxa are scattered throughout most of the clades of the robust group, and major systematic incongruences exist. numerous genera and species remain unstudied, and the ... | 2012 | 22705823 |
| a novel method for coral explant culture and micropropagation. | we describe here a method for the micropropagation of coral that creates progeny from tissue explants derived from a single polyp or colonial corals. coral tissue explants of various sizes (0.5-2.5 mm in diameter) were manually microdissected from the solitary coral fungia granulosa. explants could be maintained in an undeveloped state or induced to develop into polyps by manipulating environmental parameters such as light and temperature regimes, as well as substrate type. fully developed polyp ... | 2011 | 20700752 |
| semi-rational engineering of a coral fluorescent protein into an efficient highlighter. | kaede is a natural photoconvertible fluorescent protein found in the coral trachyphyllia geoffroyi. it contains a tripeptide, his 62-tyr 63-gly 64, which acts as a green chromophore that is photoconvertible to red following (ultra-) violet irradiation. here, we report the molecular cloning and crystal structure determination of a new fluorescent protein, kikg, from the coral favia favus, and its in vitro evolution conferring green-to-red photoconvertibility. substitution of the his 62-tyr 63-gly ... | 2005 | 15731765 |
| factors controlling the expansion behavior of favia favus (cnidaria: scleractinia): effects of light, flow, and planktonic prey. | colonies of the massive stony coral faviafavus were exposed to different flow speeds and levels of light, and to the addition of zooplankton prey. the relative importance of each factor in controlling polyp expansion behavior was tested. the coral polyps fully expanded when they were exposed to low light intensity (0-40 micromol m(-2) s(-1)) and high flow speed (15 cm s(-1)), regardless of prey presence. they also partially expanded under low and medium light (40-80 micromol m(-2) s(-1)) at medi ... | 2001 | 11341573 |
| diel 'tuning' of coral metabolism: physiological responses to light cues. | hermatypic-zooxanthellate corals track the diel patterns of the main environmental parameters - temperature, uv and visible light - by acclimation processes that include biochemical responses. the diel course of solar radiation is followed by photosynthesis rates and thereby elicits simultaneous changes in tissue oxygen tension due to the shift in photosynthesis/respiration balance. the recurrent patterns of sunlight are reflected in fluorescence yields, photosynthetic pigment content and activi ... | 2006 | 16391349 |
| photobehavior of stony corals: responses to light spectra and intensity. | tentacle expansion and contraction were investigated in four zooxanthellate coral species and one azooxanthellate coral (cladopsammia gracilis). favia favus, plerogyra sinuosa and cladopsammia gracilis expand their tentacles at night, while tentacles in goniopora lobata and stylophora pistillata are expanded continuously. light at wavelengths in the range 400-520 nm was most effective in eliciting full tentacle contraction in f. favus and in p. sinuosa. higher light intensities in the range 660- ... | 2003 | 14555744 |