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Showing 1 to 7 of 7 for “"Starfishes"”.
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Estudo estrutural e alguns aspectos ultraestruturais de ciliados comensais de invertebrados marinhos do litoral do Estado do Rio de Janeiro
… 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 found the ciliate …
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Responses to salinity of color polymorphs in two populations of the sea star, Pisaster achraceus
<p><em>Pisaster ochraceus</em> was analyzed to determine if varying salinities, animal color, or location affect the physiology of these sea stars. The three responses analyzed were aerobic respiration, ammonia excretion, and self-righting. The tested variables included two different color morphs …
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Comparative anatomy and biology of two species of the asteroid genus pisaster
<p>Interest in the endemic Pisaster was first aroused by the great variation of external color in Pisaster ochraceus. This in turn led to observations of the diversity of the spinous patterns of this sea star. Following the suggestion of Dr. Jool D. hedgepeth it was decided to make an extensive …
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The Effects of Temperature on the Physiology of PHATARIA UNIFASCIALIS : and its Implications for the Species' Distribution in the Gulf of California
<p>Populations of the asteroid Phataria unifascialis were sampled subtidally in the Gulf of California at Loreto, well within the species' distribution, and at Bahia de los Angeles (the Bay of LA), at the northern end of its distribution on several occasions between 1989 and 1991 to determine the …
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Effect of thermal stress on larvae of Patiria miniata (Brandt) including studies on induction of spawning, development and larval tagging
<p>It has been estimated by the Department of the Interior that by 1985 nearly one-quarter of all surface water in the United States will be used in removal of waste heat produced in electric generation. This will involve subjecting tremendous quantities of plankton to rapid fluctuations in …
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Pigments and Neurogenic Secretions of Dermasterias Imbricata
Identification of the compound from the asteroid Dermasterias imbricata that evokes the swimming response in the sea anemone Stomphia coccinea was attempted. Although the compound was not identified, it was postulated to be a low molecular weight highly polar molecule of possible carbohydrate …
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3D printing of bone scaffolds using powders derived from biogenic sources
… from natural sources, such as corals, starfishes, seashells, animal bones, bird eggshells etc. The natural sources used in the present work are three types of biogenic calcium carbonate, i.e. calcium carbonate that is produced by living organisms in the form of aragonite or calcite. …