H. Lasker

Publications104
h-index41
Citations3,796
Highly Influential Citations235
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Symbiodinium sp. associations in the gorgonian Pseudopterogorgia elisabethae in the Bahamas: high levels of genetic variability and population structure in symbiotic dinoflagellates
Little is known concerning the fine-scale diversity, population structure, and biogeography for Symbiodinium spp. populations inhabiting particular invertebrate species, including the gorgonian… Expand
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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… Expand
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Sexual reproduction in octocorals
For octocorals, sexual reproductive processes are fundamental to maintaining popu- lations and influencing macroevolutionary processes. While ecological data on octocorals have lagged behind their… Expand
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POPULATION STRUCTURE OF A CLONAL GORGONIAN CORAL: THE INTERPLAY BETWEEN CLONAL REPRODUCTION AND DISTURBANCE
Clonality is a common feature of plants and benthic marine organisms. In some cases clonal propagation results in a modest increase in population density, while in other cases dense populations may… Expand
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Phylogenetic analyses among octocorals (Cnidaria): mitochondrial and nuclear DNA sequences (lsu-rRNA, 16S and ssu-rRNA, 18S) support two convergent clades of branching gorgonians.
Gorgonian octocorals lack corroborated hypotheses of phylogeny. This study reconstructs genealogical relationships among some octocoral species based on published DNA sequences from the large… Expand
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Sediment rejection by reef corals: The roles of behavior and morphology in Montastrea cavernosa (Linnaeus)
Abstract The sediment rejection abilities of colonies of Montastrea cavernosa (Linnaeus) were monitored in a series of field and laboratory experiments. Under conditions of natural sediment… Expand
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Repeated loss of coloniality and symbiosis in scleractinian corals
The combination of coloniality and symbiosis in Scleractinia is thought to confer competitive advantage over other benthic invertebrates, and it is likely the key factor for the dominance of corals… Expand
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Foraging Patterns of Cyphoma gibbosum on Octocorals: the Roles of Host Choice and Feeding Preference
The distributions of small, relatively slow moving grazers are often portrayed as expressions of feeding preference. However, more careful analysis of such distribution patterns in concert with… Expand
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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… Expand
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Determinate Growth and Modularity in a Gorgonian Octocoral
Growth rates of branches of colonies of the gorgonian Pseudopterogorgia elisabethae were monitored for 2 years on a reef at San Salvador Island, Bahamas. Images of 261 colonies were made at 6-month… Expand
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