Summary: species on the nearby jetty. Determination of digestion coefficients of E. lucunter for three different diets showed that absorption of protein was more efficient from invertebrate (crab and squid) material than from algae or mixed food items. Absorption...
Summary: 1 Reproductive biology of Paracentrotus lividus (Echinodermata, Echinoidea) in two contrasting habitats of northern Tunisia (southeast Mediterranean) Running head : P. lividus reproduction in Northern.firstname.lastname@example.org Abstract The reproductive strategies of the sea urchin, Paracentrotus lividus, was studied in the Bay
Summary: of Strongylocentrotus droebachiensis (Echinodermata: Echinoidea) off Nova Scotia, Canada R. E. Scheibling and R. L). These barren grounds appeared to exhibit a high degree of stability (Mann, 1977; Bernstein etal., 1981; Chapman
Summary: , Cisco Group, Virgilian, Upper Pennsyl- vanian; stock-tank area just west of road, 2 tuiles southeast of Thrifty; locality is reached by going 1.1 tuiles southeast of Thrifty on F.M. 2492 and turning south on gravel road (U. S. Geol. Survey loc. 16020..., Cisco Group, Virgilian, Upper Pennsyl- vanian; stock-tank area just west of road, 2 tuiles southeast of Thrifty; locality is reached by going 1.1 tuiles southeast of Thrifty on F.M. 2492 and turning south on gravel road (U. S. Geol. Survey loc. 16020...
Moore, R. C.; Jeffords, Russell M.; Miller, T. H. 1968-01-01
Summary: 'insertion â des muscles moteurs de cet organe. Immédiatement au-dessus, un renfoncement subtriangulaire, limité par une lèvre 10 The University of Kansas Paleontological Contributions—Paper 22 légèrement saillante, rappelle la plateforme que nous avons...'ornementation, de même type que celle des plaques supérieures de la thèque, est comme effacée du côté inférieur. La face proximale est occupée tout entière par une cavité profonde, qui représente l'insertion des muscles moteurs principaux de l'organe. La face...
Summary: marine invertebrates, at least one clade radiated rapidly during the Triassic. Unlike echinoids Seilacher, Andrew Smith, Tim White, Robert Woollacott, American Museum of Natural History, Explorers Club, Smithsonian Institution, University of Guam Marine Laboratory, U.S. Environmental Protection Agency, Women
Summary: , Figure 11. Pictionary of shapes and sides, 20 SYSTEMATIC ACCOUNTS Asteroidea The Asteroidea are stellate echinoderms that have the disk and arms solidly fused together with no distinct margin separating the disk surface from the arm surface.... The ambulacral grooves are open along the oral surface of the arms. The madreporite is aboral and placed somewhere on the disk region, as is the anus. The aboral surface may have paxillae, papullae, granules, pedicellaria, spines or a combination of the above...
Summary: on deck and selected ones were photographed to record natural color. They were then fixed in 10 percent formalin, and, in most cases, transferred to 70 percent etha- nol for preservation. One poison station was made at 55 m in the algal-sponge communi.... 478l 1915, P. 44. Material studied. ? 1 specimen, 7 arms, R=4 mm, r 2 mm, 48 m, sponge, 7 May, 1972, hand. ? 2 specimens, 6 arms, R=l-3 mm, r~0. 5 mm, 46 m, algal-rubble, 24 October, 1972, grab. ~DA 1 . ? 81 * d lt, tl. * 5 tl l d b lacral plates...
Summary: , directed our attention to Aeal1l haster in the Gulf of California. Based on the literature, field notes are assignable to A. ellisii (Gray, 1840), to A. ellisii pseudo- planci Caso, 1962, or to A. planci (L., 1758
Summary: , cuneate uniserial arms, no intrabrachials, and atomous free arms. Cleiocrinus, however, is so unusual hat its origin from other diplobathrids is problematic. Whereas Cleiocrinus has a small aboral cup, it has a huge calyx composed of hypertrophied, fused..., cuneate uniserial arms, no intrabrachials, and atomous free arms. Cleiocrinus, however, is so unusual hat its origin from other diplobathrids is problematic. Whereas Cleiocrinus has a small aboral cup, it has a huge calyx composed of hypertrophied, fused...
Summary: served as study animals for the regeneration experiment.animals collected died and thus were not included in the arm regenerationregeneration rate of the autotomized arm for all the groups of brittle stars. The control animals
Summary: regeneration rates in natural and planted seagrass beds. Marine Biologyregeneration in the brittlestar Amphiura filiformis. The Journal of Experimental BiologyRegeneration on Moorea, French Polynesia. University of California, Berkeley, Moorea class: Biology
Summary: Introduction to the biology of regeneration in Echinoderms.Regeneration rates differed by species; mostly likely influenced by habitat, ecology and biologyBiology 139: Reichman, O.J.. 1984. Evolution of regeneration
Summary: ) and (4) two sister clades that contain asteriids from the Antarctic and pantropical regions. Our analysis suggests a hypothesis of an older fauna present in the Antarctic during the Eocene, which was succeeded by a modern Antarctic fauna that is represented by the recently derived Antarctic Asteriidae
Summary: percentage of the long chain PUFAs eicosapentanoic acid (EPA, 20:5n-3) docosahexanoic acid (DHA, 22:6n-3 than those fed the microencapsulated diet. Unexpectedly, despite a high percentage of DHA and EPA
Summary: Echinodermata, Hemichordata, and Chordata. Chordata is composed of three subphyla, Verte- brata, Cephalochordata than a subphylum of Chordata. Theories of chordate origins have been expertly reviewed (9
Summary: :Asteriidae) across Open-Coast Habitats in the Northeastern Pacific1 Peter T. Raimondi,2 Raphael D. Sagarin,3- spicuous members of northeastern Pacific rocky-shore fauna due to its dramatic color variation, ranging of the most immediately conspicuous observations in northeastern Pacific tide pools is the striking color
Summary: Clusters, each possessing two or three spinesy are located on the inferomarginal plates The adambulacral armature consists of two V-shaped clumps of spines, each clump consisting of 33 3-4 divergent spines with the central spines larger than the rest... ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 87 APPENDIX I: GLOSSARY ~ 98 APPENDIX II: PLATES' ~ ~ ~ 102 Vl TA ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 153 viii L1ST OF TABLES Table Page ABSOLUTE AND MEAN TEMPERATURE MAXIMA AND MINIMA FOR THE AREA BORDERED BY LONGITUDES 98 30' 94...
Summary: and dissimilarities. In addition, I determined if a specific group of invertebrates, Asteroids (Echinodermata), were Erhardt and Chris Romsos for providing space and additional tools to successfully complete invertebrate
Summary: for locomotion. There is no true blood vascular or excretory system, and a very simple radially organised nervous with the mesoderm · Complex water vascular system Class: Echinoidea Order: Cidaroida Order: Echinothuroida Order echinoderm system, the water vascular system, operates a series of individual tube feet or podia, especially
Summary: than the last glacial maximum. We detected gene flow across the north Atlantic in the form, Echinoidea #12;3 Quaternary sea level fluctuations and climate change have influenced the genetic structure into the Atlantic at least 3.5 Mya (Durham and MacNeil 1967). Following these invasions, eustatic sea level changes
Summary: acidic, thereby reducing their degree of saturation with respect to calcium carbonate (CaCO3 ). There is mounting concern over the impact that future CO2 -induced reduc- tions in the CaCO3 saturation state to span a broad taxonomic range (crustacea, cnidaria, echinoidea, rho- dophyta, chlorophyta, gastropoda
Summary: : Asteroidea/Sea Stars Echinoidea/Sea Urchins Holothuroidea/Sea Cucumbers The other three groups are less well known: Ophiuroidea/Brittles Stars Crinoidea/Crinoids/Sea Lillies Concentricycloidea/Sea daisies All and is formed by calcified plates called #12;ossicles. In sea stars and sea urchins, there are specialized
Summary: activation and apoptosis. Despite conservation of Bcl-2, Apaf-1, and caspases in invertebrate phyla, the existence of the mito- chondrial pathway in any invertebrate is, at best, controversial. Here we show invertebrate deuter- ostomes (phylum Echinodermata). The mitochondrial pathway of apoptosis, characterized
Summary: An Ancient Repeat Sequence in the ATP Synthase b-Subunit Gene of Forcipulate Sea Stars David W is described from two nonadjacent introns of the ATP synthase b-subunit gene in sea stars of the order Forcipulatida (Echinodermata: Asteroidea). The repeat is present in both introns of all forcipulate sea stars
Summary: mitochondrial and nuclear sequences support the monophyly of forcipulatacean sea stars D.W. Foltz ¤ , M of forcipulatacean sea stars (Echinodermata: Asteroidea) have reconstructed a non-monophy- letic order Forcipulatida forcipulatacean sea stars, with multiple representatives of all but one of the forcipulate families and
Summary: enhancing habitat complexity to providing staple food sources for other organisms. Regardless of how and dissimilarities. In addition, I determined if a specific group of invertebrates, Asteroids (Echinodermata), were of this project. I also thank Bruce Menge and Sally Hacker of Department of Zoology for their additional
Summary: for the Sand Dollar Echinarachnius parma Abstract.-Knowledge of popu- lation dynamics and production- cruitment frequency and success, life span, growth rate, and production of a major component of the sand- bottom benthic community in this re- gion: the common sand dollar Echi- nat'achnius parma (Echinodermata