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Showing 1 to 12 of 12 for “"Lytechinus"”.
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Phenotypic and Genetic Diversity in the Sea Urchin Lytechinus Variegatus
… and morphology of the sea urchin <italic>Lytechinus variegatus </italic>. This study had 3 objectives: 1) to describe and quantify phenotypic diversity--color and morphology--throughout the geographic range; 2) to determine the heritability of color in genetic crosses between individuals …
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Developmental Single-Cell RNA Sequencing in the Sea Urchin Species Lytechinus variegatus and Heliocidaris erythrogramma
… strategies, the planktotrophic (conserved) Lytechinus variegatus and lecithotrophic (derived) Heliocidaris erythrogramma. To do this, single cell RNA sequencing methods were developed and adapted for the two species to address to what degree the developmental gene regulatory network genes …
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Evaluating in situ Grazing Patterns of Lytechinus variegatus and their Effects on Seagrass Beds of Thalassia testudinum
<p>The sea urchin<em> Lytechinus variegatus </em>is a known grazer of the seagrass <em>Thalassia testudinum</em>, and has been known to denude vast stands of seagrass beds at high densities. Outside of these denudation events, the effects of sea urchins on seagrass are poorly understood. This study …
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Estudo preliminar da sensibilidade do ouriço lytechinus variegatus à substâncias de referência: comparação de duas populações da zona costeira da cidade de Niterói - RJ
Desastres ambientais causados por rompimento de barragens de mineração, derramamento de óleo no mar ou despejos ilegais de efluentes industriais, promovem desequilíbrio ecológico nos corpos hídricos, afetando a vida da natureza ao seu redor. Para se estimar a toxicidade dos poluentes provenientes …
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Estudo estrutural e alguns aspectos ultraestruturais de ciliados comensais de invertebrados marinhos do litoral do Estado do Rio de Janeiro
… found in the digestive cavity of one Echinoderma Lytechinus variegatus. The starfishes Echinaster brasiliensis, Coscinasterias tenuispina, Astropecten armatus brasiliensis and Linckia guildingii lodged the epibionte Licnophora sp. Claparède, 1867; Heterotrichida. In the Enoplopatiria stellifera we …
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Investigations into the role of histone H2A ubiquitination in chromatin
… and chromatosoine positioning on a 208 bp Lytechinus variegatus 5S rDNA fragment was investigated using a combination of micrococcal nuclease digestion and subsequent restriction enzyme digestion of the core particle or chromatosome DNA. Nucleosomes and chromatosomes containing uH2A were …
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Acute Toxicity and Sub-Lethal Effects of Non-Point Source Pollutants on Invertebrates
… oyster, Crassostrea virginica, the sea urchin, Lytechinus variegatus, and/or the barnacle, Amphibalanus (= Balanus) amphitrite. In addition, the general effects of non-point source pollution within the Rachel Carson Estuarine Research Reserve (RCERR) were examined at six sites in order to gain a …
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Gene regulatory networks controlling an epithelial-mesenchymal transition
… urchin snail and twist genes were cloned from Lytechinus variegates, and each has been experimentally connected to the PMC regulatory network; these experiments demonstrate several requirements for PMC ingression, and in doing so, begin to illustrate how a gene regulatory network state controls …
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Investigation of the roles of ion channels in the development of the sea urchin embryo
… (VGSCs), induces aberrant skeletal patterning in Lytechinus variegatus larvae. The larval skeleton is secreted by the primary mesenchyme cells (PMCs), which migrate within the blastocoel into a stereotypical pattern. We show that VGSC activity is required for normal PMC migration and skeletal …