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Chemotaxonomy of the marine sponge Xestospongia muta
Title
Chemotaxonomy of the marine sponge Xestospongia muta.
Creator
Reddy, Manoj Kumar., Florida Atlantic University, Kerr, Russell G.
Abstract/Description
Chemical analysis of large number of specimens of the sponge Xestospongia muta have revealed the existence of three distinct sterol chemotypes. Since sponges are well known to contain a diverse array of all classes of lipids, the utility of fatty acid composition as a chemotaxonomic tool for Xestospongia muta has been addressed. Further the biosynthetic capabilities of the three chemotypes are being evaluated for possible taxonomic use. Further the utility of TLC and NMR as additional...
Show moreChemical analysis of large number of specimens of the sponge Xestospongia muta have revealed the existence of three distinct sterol chemotypes. Since sponges are well known to contain a diverse array of all classes of lipids, the utility of fatty acid composition as a chemotaxonomic tool for Xestospongia muta has been addressed. Further the biosynthetic capabilities of the three chemotypes are being evaluated for possible taxonomic use. Further the utility of TLC and NMR as additional taxonomic tools has also been evaluated.
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Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15167
Subject Headings
Chemotaxonomy, Sponges, Sterols
Format
Document (PDF)
Phylogenetic classification of the halichondrids (Porifera, Demospongiae)
Title
Phylogenetic classification of the halichondrids (Porifera, Demospongiae).
Creator
Van Soest, Rob W. M., Diaz, Maria Cristina, Pomponi, Shirley A.
Date Issued
1990
PURL
http://purl.flvc.org/fau/fd/FA00007404
Subject Headings
Cladistic analysis, Halichondrida, Demospongiae, Chemotaxonomy, Phylogeny
Format
Document (PDF)
Species differentiation in the marine sponge genus Discodermia (Demospongiae, Lithistida): the utility of ethanol extract profiles as species-specific chemotaxonomic markers
Title
Species differentiation in the marine sponge genus Discodermia (Demospongiae, Lithistida): the utility of ethanol extract profiles as species-specific chemotaxonomic markers.
Creator
Kelly-Borges, M., Robinson, E. V., Gunasekera, Sarath P., Gunasekera, M., Gulavita, N. K., Pomponi, Shirley A.
Date Issued
1994
PURL
http://purl.flvc.org/FCLA/DT/3331875
Subject Headings
Sponges, Demospongiae, Chemotaxonomy, Porifera, Thin layer chromatography
Format
Document (PDF)
Effects of Carbon Dioxide Levels on Growth and Pigments of Freshwater Algae
Title
Effects of Carbon Dioxide Levels on Growth and Pigments of Freshwater Algae.
Creator
Bermudez, Jeanne, Louda, J. W., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description
This project was designed to investigate the effects of carbon dioxide (CO2) levels on the growth and pigment ratios (chemotaxonomy) of freshwater algal species typical to the south Florida surface waters. Green algae, diatoms, and cyanobacteria were cultured under 400 or 800 ppm CO3 in air for several weeks. Growth monitoring used a cell counter, hemocytometer, and chlorophyll fluorescence. Pigments were analyzed using HPLC-PDA. Experiments with certified CO2 concentrations (400, 600, 800,...
Show moreThis project was designed to investigate the effects of carbon dioxide (CO2) levels on the growth and pigment ratios (chemotaxonomy) of freshwater algal species typical to the south Florida surface waters. Green algae, diatoms, and cyanobacteria were cultured under 400 or 800 ppm CO3 in air for several weeks. Growth monitoring used a cell counter, hemocytometer, and chlorophyll fluorescence. Pigments were analyzed using HPLC-PDA. Experiments with certified CO2 concentrations (400, 600, 800, 1200 ppm) were conducted with helium degassed ultrapure water and each of three culture media. Theoretical and experimental pH values with water matched exactly. However, each culture media proved to exhibit significant buffer capacity. Cell growth monitoring was problematic except for the cyanobacterium Microcystis aeruginosa. That species responded to increased CO2 (800 ppm) with increased growth rates as predicted. The other species gave erratic results mainly due to difficulties in obtaining valid consistent cell counts.
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Date Issued
2018
PURL
http://purl.flvc.org/fau/fd/FA00013170
Subject Headings
Freshwater algae--Growth, Chemotaxonomy, Carbon dioxide, Pigments (Biology)
Format
Document (PDF)