No description available.

In order to search for bioactive compounds, we have studied the chemical constituents from the organic extracts of two soft corals Sinularia granosa and Sinularia leptoclados. This study had led to the isolation of twenty-one natural compounds 1¡V21, including five new cembrane-type diterpenoids, querciformolide B (1), granosolides A¡VD (2, 3, 5, and 6) and one new secosteroid 3£],11-dihydroxy-5£],6£]-expoxy-24- methylene-9,11-secocholestan-9-one (11) along with seven know compounds from S. granosa, and two new oppositol¡Vtype sesquiterpenoids leptocladolins A and B (14 and 15), and two new steroid 24-methylenecholestan-3£],5£\,6£]-triol 11-acetate (18)¡B24(S*)-24- methylcholestan-3£],5£\,6£]-triol 11-acetate (19) along with four known compounds (16, 17, 20 and 21) from S. leptoclados. The structure of compounds 1¡V21 were established by detailed spectral data analysis (IR, MS, 1D, 2D NMR) and by comparison of the spectral data with those ofthe related known compounds. The relative stereochemistries of compounds 1, 7, 14, and 15 were further confirmed by X-ray single-crystal diffraction analysis. The absolute configurations of 1¡V3 and 14¡V17 were determined using a modified Mosher¡¦s method. The cytotoxicity of compounds 1¡V17 and 19¡V21 against the Daoy (human medulloblastoma), Hep2 (human laryngeal carcinoma), MCF-7 (human breast adenocarcinoma), Hela (human cervical epitheloid carcinoma) CCRF-CEM (human T-cell acute lymphoblastic leukemia), and DLD-1 (human colon adenocarcinoma) tumor cell lines were determined. Compounds 9, 19, and 21 showed moderate activity toward the above five tumor cells. Furthermore, compounds 11 and 17 were found to show significant activity against the accumulation of the pro-inflammatory iNOSand COX-2 protein at 10 £gM.

No description available.

Thesis--Leiden. / Includes bibliographical references (p. 139-142).

Preliminary to the descriptions of genera and species is a very brief discussion of coral terminology and classification. The thesis embodies descriptions and illustrations of 29 genera and 42 species of fossil corals, reported in the literature to occur in Upper Devonian rocks of western Canada. Although most of these are reported from the Rocky Mountain area, several species from the Mackenzie River-Mackenzie Mountains area are also included. In addition, species reported from the Upper Devonian Outcrops east of the Rocky Mountains have been dealt with. Numerous taxonomic problems encountered in the study are discussed in remarks on the genera and species involved. Fossil corals collected from the region drained by the headwaters of the North Saskatchewan River are described, identified and illustrated. Nine genera and 14 species are recognized in the collection. Of these, 1 genus and 4 species do not appear to have been previously reported to occur in the Upper Devonian beds of the Rocky Mountains in Canada. The species of Coenites described is possibly a new one but it cannot be regarded as such until a study is made of literature which, at present, is not available. From this study of Upper Devonian corals, the writer concludes that the DISPHYLLIDAE are in need of division into new subfamilies, and he suggests two characteristics whose phylogenetic significance requires investigation. However, it is considered that existing paleontologlc data Is neither comprehensive enough nor precise enough to permit such an undertaking. Reasons are given for the present inadequacies of knowledge of Upper Devonian corals and recommendations are made for improvement of the situation. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

No description available.

Thesis (Ph. D.)--University of Hawaii at Manoa, 1995. / Includes bibliographical references (leaves 174-199). / Microfiche. / xiv, 199 leaves, bound ill. (some col.) 29 cm

Thesis (Ph. D.)--University of Hong Kong, 1997. / Includes bibliographical references (leaves 200-239).

Stony coral tissue loss disease (SCTLD) has been spreading throughout Caribbean coral reefs since 2014, heavily impacting scleractinian corals. To mitigate losses, this experiment assessed the effectiveness of two SCTLD intervention treatments in situ. SCTLD-affected Montastraea cavernosa colonies offshore of Broward County were divided into three treatment groups: 1) chlorinated epoxy, 2) Base 2B plus amoxicillin, and 3) untreated controls, plus a fourth group of healthy untreated controls. These colonies were monitored over 11 months to record SCTLD status, lesion activity, colony mortality, and changes in healthy tissue area with 3D modelling. The Base 2B plus amoxicillin treatment was more effective at halting SCTLD lesions, slowing the rate of tissue loss, and decreasing the overall proportion of tissue lost as compared to chlorinated epoxy or no treatment. However, neither treatment prevented new SCTLD lesions from developing. These findings can enhance the effectiveness of Caribbean management efforts to mitigate SCTLD impacts. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2020. / FAU Electronic Theses and Dissertations Collection

Lin Ting Pong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 139-144). / Abstracts in English and Chinese. / Acknowledgements --- p.i / Abstract --- p.ii / Contents --- p.vii / List of Tables --- p.ix / List of Figures --- p.x / List of Plates --- p.xv / Chapter Chapter1 --- General Introduction --- p.1 / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- The distribution of corals in Hong Kong --- p.7 / Chapter 1.3 --- Objectives --- p.9 / Chapter 1.4 --- Study Site --- p.9 / Chapter 1.5 --- Coral species investigated in this research --- p.11 / Chapter 1.6 --- Thesis outline --- p.13 / Chapter Chapter2 --- "The reproductive pattern of the Scleractinian corals, Favia speciosa, Favites abdita and Leptastrea purpurea in A Ye Wan, Tung Ping Chau" --- p.22 / Chapter 2.1 --- Introduction --- p.22 / Chapter 2.2 --- Methods and Materials --- p.27 / Chapter 2.2.1 --- Samples collection --- p.27 / Chapter 2.2.2 --- Laboratory work procedure --- p.28 / Chapter 2.2.2.1 --- Slide preparation --- p.29 / Chapter 2.2.2.2 --- Light microscopy --- p.31 / Chapter 2.2.2.3 --- Measurement --- p.31 / Chapter 2.2.3 --- Spawning observations --- p.32 / Chapter 2.3 --- Results --- p.33 / Chapter 2.3.1 --- Gametogenic cycle of Favia speciosa --- p.33 / Chapter 2.3.2 --- Gametogenic cycle of Favites abdita --- p.37 / Chapter 2.3.3 --- Gametogenic cycle of Leptastrea purpurea --- p.40 / Chapter 2.3.4 --- Spawning observations --- p.43 / Chapter 2.4 --- Discussion --- p.43 / Chapter 2.4.1 --- Gametogenic cycles --- p.43 / Chapter 2.4.2 --- Spawning observations --- p.50 / Chapter Chapter3 --- "The reproductive pattern of Oulastrea crispata in A Ye Wan and A Ma Wan, Tung Ping Chau" --- p.79 / Chapter 3.1 --- Introduction --- p.79 / Chapter 3.2 --- Methods and Materials --- p.81 / Chapter 3.2.1 --- Samples collection --- p.81 / Chapter 3.2.2 --- Laboratory protocol --- p.82 / Chapter 3.3 --- Results --- p.84 / Chapter 3.3.1 --- Gametogenic cycle --- p.84 / Chapter 3.4 --- Discussion --- p.89 / Chapter 3.4.1 --- Gametogenic cycle --- p.89 / Chapter Chapter4 --- "The effect of physical factors: temperature and irradiance, on the reproductive pattern of Oulastrea crispata in A Ye Wan, Tung Ping Chau" --- p.110 / Chapter 4.1 --- Introduction --- p.110 / Chapter 4.2 --- Methods and Materials --- p.114 / Chapter 4.2.1 --- Experimental setups --- p.114 / Chapter 4.2.2 --- Samples collection --- p.116 / Chapter 4.2.3 --- Laboratory work procedure --- p.117 / Chapter 4.3 --- Results --- p.118 / Chapter 4.3.2 --- Gametogenic cycle in all experimental setups --- p.118 / Chapter 4.4 --- Discussion --- p.122 / Chapter Chpater5 --- Summary and Perspectives --- p.134 / References --- p.139