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Showing 1 to 8 of 8 for “"Sand dollar"”.
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Life history, distribution and abundance of the sand dollar, Mellita quinquiesperforata (LESKE) near Dauphin Island, Alabama
Electronic Thesis or Dissertation
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Morphological and Biochemical Changes of Sand Dollar Larvae in Response to Variation in Diet and Salinity
<p>Larval growth and development of two sand dollars, <em>Mellita isometra</em> and <em>Dendraster excentricus</em> was investigated by assigning larvae to several single and mixed algal diets, three levels of salinity and salinity-diet combinations in the laboratory. For <em>M. isometra</em>, …
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The reproduction and recruitment of the sand dollar Arachnoides placenta (L.) (Echinoidea: Echinodermata) from differing habitats on the North Queensland coast
… preference for pools and ripples containing wet sand. Despite patchiness a significant decrease in density downshore was observed in 11 / 17 transects laid at Pallarenda Beach, 2001 (p = <0.05). Significant differences in density were observed between all sites (p = 0.000) and even over distances …
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Acoustic scattering from sand dollars (Dendraster excentricus) : modeling as high aspect ratio oblate objects and comparison to experiment
… subcritical angle penetration of the seafloor. Sand dollars (Dendraster excentricus) occur commonly in the ocean and have been shown to be significant scatters of sound. In order to understand more fully the scattering mechanisms of these organisms, the scattering from individual sand dollars …
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Acoustic scattering from sand dollars (Dendraster Excentricus) : modeling as high aspect ratio oblate objects and comparison to experiment
… subcritical angle penetration of the seafloor. Sand dollars (Dendraster excentricus) occur commonly in the ocean and have been shown to be significant scatters of sound. In order to understand more fully the scattering mechanisms of these organisms, the scattering from individual sand dollars …
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Ingestion Rates of Five Species of Pacific Northwest Echinoderm Larvae on Natural and Artificial Particles
… urchin Strongylocentrotus purpuratus, and the sand dollar Dendraster excentricus, were investigated by assigning larvae to three natural and one artificial diet in the laboratory. The natural algal diets included Dunaliella tertiolecta, Isochrysis galbana and Rhodomonas sp. The artificial diet …
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Feeding habits of the yellowtail flounder and production of its invertebrate prey on Georges Bank
… incisa, respectively; and less than 1% for the sand dollar, Echinarachnius parma.
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Taphonomy and Palaeoecology of multi-element skeleton invertebrates: a genetic model for exceptional preservation
… with subordinate Clypeaster. Although the four sand dollar deposits, which are the object of this study, can be assigned to a shoreface environment, there are differences in their features and origin. Three different genetic mechanisms, such as multiple in situ reworking, storm deposition and …