| intracolonial variation in toxicity in scleractinian corals. | single colonies of the scleractinian corals lobophyllia corymbosa, favites abdita, favia matthaii, favia stelligera, platygyra daedalea, leptoria phrygia, cyphastrea serailia, hydnophora exesa and astreopora myriophthalma were permanently marked with buoys on the reef flat at heron island. great barrier reef. portions of colonies were removed up to seven times at intervals of two or three months. aqueous extracts of the colony portions were assayed using six bioassay regimes namely, toxicity to ... | 1990 | 1979892 |
| restructuring the traditional suborders in the order scleractinia based on embryogenetic morphological characteristics. | the order scleractinia includes two distinct groups, which are termed "complex" and "robust" as indicated by the molecular phylogeny of mitochondrial 16s ribosomal gene sequences. since this discovery, coral taxonomists have been seeking morphological characters for grouping this deep division in the order scleractinia. recently, morphological characteristics during embryogenesis that facilitate grouping the two clades as "complex" and "robust" were reported, thus clarifying a deep division in t ... | 2016 | 26853877 |
| 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 |
| photosystem ii heterogeneity of in hospite zooxanthellae in scleractinian corals exposed to bleaching conditions. | increased ocean temperatures are thought to be triggering mass coral bleaching events around the world. the intracellular symbiotic zooxanthellae (genus symbiodinium) are expelled from the coral host, which is believed to be a response to photosynthetic damage within these symbionts. several sites of impact have been proposed, and here we probe the functional heterogeneity of photosystem ii (psii) in three coral species exposed to bleaching conditions. as length of exposure to bleaching conditio ... | 2007 | 16961432 |
| loss of functional photosystem ii reaction centres in zooxanthellae of corals exposed to bleaching conditions: using fluorescence rise kinetics. | mass coral bleaching is linked to elevated sea surface temperatures, 1-2 degrees c above average, during periods of intense light. these conditions induce the expulsion of zooxanthellae from the coral host in response to photosynthetic damage in the algal symbionts. the mechanism that triggers this release has not been clearly established and to further our knowledge of this process, fluorescence rise kinetics have been studied for the first time. corals that were exposed to elevated temperature ... | 2004 | 16228613 |