H. Lasker

Publications135
h-index41
Citations4,106
Highly Influential Citations221
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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…
Symbiodinium sp. associations in the gorgonian Pseudopterogorgia elisabethae in the Bahamas: high levels of genetic variability and population structure in symbiotic dinoflagellates
TLDR
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.
Sexual reproduction in octocorals
TLDR
Differences in reproductive characteristics between the 2 taxa do not offer an obvious explanation for these differentBiogeographic patterns of reproductive biology within Octocorallia.
Phylogenetic analyses among octocorals (Cnidaria): mitochondrial and nuclear DNA sequences (lsu-rRNA, 16S and ssu-rRNA, 18S) support two convergent clades of branching gorgonians.
TLDR
Recon reconstructs genealogical relationships among some octocoral species based on published DNA sequences using information from insertions-deletions (INDELS) and the predicted secondary structure of the lsu-rRNA (16S) to support a hypothesis of independent evolution of branching in the twoOctocoral clades.
POPULATION STRUCTURE OF A CLONAL GORGONIAN CORAL: THE INTERPLAY BETWEEN CLONAL REPRODUCTION AND DISTURBANCE
TLDR
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)
TLDR
The sediment rejection abilities of colonies of Montastrea cavernosa (Linnaeus) were monitored in a series of field and laboratory experiments, showing the sediment rejection process to consist of passive and active phases.
Foraging Patterns of Cyphoma gibbosum on Octocorals: the Roles of Host Choice and Feeding Preference
TLDR
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
TLDR
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…
DNA fingerprints of a gorgonian coral: a method for detecting clonal structure in a vegetative species
TLDR
The present study demonstrates the utility of DNA fingerprinting for distinguishing clones and for identifying clonal structure of marine invertebrate populations.
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