Search

A diminutive new species of Predaea (Gigartinales, Rhodophyta) is described from coral reef habitats in Puerto Rico, Caribbean Sea. It is composed of compressed lobes which radiate to form an irregularly rounded shape. The new species is characterized by its cylindrical cortical cells, 3-celled carpogonial branches, small number of nutritive cells associated with auxiliary cells and initiation of gonimoblasts from connecting filaments. [ABSTRACT FROM AUTHOR]

Dasya puertoricensis is newly described from subtidal habitats in southwestern Puerto Rico. The new species is characterized by its conspicuously dense, brush-like branch tips, rhizoidal cortication and by its indeterminate adventitious filaments which arise from pseudolateral basal cells. Adventitious monosiphonous laterals are absent. Tetrasporangial stichidia normally possess 6 sporangia per fertile whorl. The cystocarps are sessile with cortical cells at their broadened bases enveloping the bearing branches. [ABSTRACT FROM AUTHOR]

Forty eight HPLC peaks from three distinct TLC zones obtained from crude lipid extracts of the tropical marine red alga Spyridia filamentosa were assayed against five pathogenic microorganisms. Of these, nineteen showed detectable activities (seven HPLC peaks from TLC zone 5; five peaks from TLC zone 9; seven peaks from TLC zone 12). Activities by single HPLC peaks were generally against one or two assay microorganisms. The total number of biologically active compounds in a given alga is shown to be substantially greater than can be ascertained by assaying whole-algal extracts. [ABSTRACT FROM AUTHOR]

Forty eight HPLC peaks from three distinct TLC zones obtained from crude lipid extracts of the tropical marine red alga Spyridia filamentosa were assayed against five pathogenic microorganisms. Of these, nineteen showed detectable activities (seven HPLC peaks from TLC zone 5; five peaks from TLC zone 9; seven peaks from TLC zone 12). Activities by single HPLC peaks were generally against one or two assay microorganisms. The total number of biologically active compounds in a given alga is shown to be substantially greater than can be ascertained by assaying whole-algal extracts. [ABSTRACT FROM AUTHOR]

Examines the fatty acid composition of the tropical genus Halimeda. List of Caribbean species; Measurement of principal fatty acids among species; Identification of tetracosanoic acid, pentacosanoic acid, and hexacosanoic acid.