Molecular phylogenetic analyses of shallow-water Caribbean octocorals
Octocorals, especially gorgonians, are conspicuous on Caribbean coral reefs, but there is no consensus regarding species relationships. Mitochondrial protein-coding genes [NADH-dehydrogenase subunits…
Sexual reproduction in octocorals
Differences in reproductive characteristics between the 2 taxa do not offer an obvious explanation for these differentBiogeographic patterns of reproductive biology within Octocorallia.
Symbiodinium sp. associations in the gorgonian Pseudopterogorgia elisabethae in the Bahamas: high levels of genetic variability and population structure in symbiotic dinoflagellates
- S. R. Santos, C. Gutiérrez-Rodríguez, H. Lasker, M. Coffroth
- Biology, Environmental Science
- 30 April 2003
Tests of linkage disequilibrium suggested that a combination of clonal propagation of the haploid phase and recombination is responsible for maintaining these distinct Symbiodinium sp.
Phylogenetic analyses among octocorals (Cnidaria): mitochondrial and nuclear DNA sequences (lsu-rRNA, 16S and ssu-rRNA, 18S) support two convergent clades of branching gorgonians.
POPULATION STRUCTURE OF A CLONAL GORGONIAN CORAL: THE INTERPLAY BETWEEN CLONAL REPRODUCTION AND DISTURBANCE
A generalized model relating population structure of clonal species to disturbance and the mode of vegetative propagation is presented, which shows that among these taxa disturbance has a greater affect on individual survival than on propagation.
Sediment rejection by reef corals: The roles of behavior and morphology in Montastrea cavernosa (Linnaeus)
- H. Lasker
- Environmental Science
Foraging Patterns of Cyphoma gibbosum on Octocorals: the Roles of Host Choice and Feeding Preference
Analysis of the distributions of small, relatively slow moving grazers in concert with measurements of feeding suggests that the distribution patterns of the gorgonian-eating snail Cyphoma gibbosum may not reflect the influence of feeding preference alone.
Repeated loss of coloniality and symbiosis in scleractinian corals
- M. Barbeitos, S. Romano, H. Lasker
- Environmental ScienceProceedings of the National Academy of Sciences
- 14 June 2010
The phyletic link between reef and nonreef communities may have played an important role in the dynamics of extinction and recovery that marks the evolutionary history of scleractinians, and some reef lineages may have escaped local extinction by diversifying into offshore environments.
The Reproductive Cycle and Spawning in a Caribbean Gorgonian
The reproductive biology of Plexuara A, a common but undescribed Caribbean gorgonian, was studied in the San Blas Islands, Panama. Oocytes were present in the polyps throughout the year, though a…
Egg production by colonies of a gorgonian coral
The number of polyps per colony and the average number of mature eggs per polyp both were greater among larger female colonies than among smaller colonies, suggesting that proportionately less energy is used for growth as a colony gets larger, and thus may be available for reproduction.