E-print Network

E-print Network

Sample search results for: lucunter echinodermata echinoidea



Feeding and nutritional ecology of the sea urchins Echinometra lucunter (Linnaeus, 1758) and Arbacia punctulata (Lamarck, 1816) Echinodermata: Echinoidea): the importance of animal foods.

  Open Access Theses and Dissertations

Summary: ??Analysis of gut contents of Echinometra lucunter and Arbacia punctulata revealed that A. punctulata consumes significantly greater amounts of animal material – barnacles, mollusks, and bryozoans –… (more)

Pestovic, Jennifer Beth


Feeding and nutritional ecology of the sea urchins Echinometra lucunter (Linnaeus, 1758) and Arbacia punctulata (Lamarck, 1816) Echinodermata: Echinoidea): the importance of animal foods

  Texas A&M University - TxSpace

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...

Pestovic, Jennifer Beth


Desenvolvimento e ciclo reprodutivo da bolacha-do-mar Clypeaster subdepressus (Echinodermata: Echinoidea) de São Sebastião, SP.

  Open Access Theses and Dissertations

Summary: ??Desenvolvimento e ciclo reprodutivo da bolacha-do-mar Clypeaster subdepressus (Echinodermata: Echinoidea) de São Sebastião, SP Resumo: Este trabalho descreve o desenvolvimento embrionário, larval e juvenil da… (more)

Bruno Cossermelli Vellutini


Reproductive biology of Paracentrotus lividus (Echinodermata, Echinoidea) in two contrasting habitats of northern Tunisia (southeast Mediterranean)

  Computer Technologies and Information Sciences Websites

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.guillou@univ-brest.fr Abstract The reproductive strategies of the sea urchin, Paracentrotus lividus, was studied in the Bay

Boyer, Edmond


Urchin Genus Centrostephanus (Echinodermata: Echinoidea) from the Atlantic and Eastern Pacific Oceans. Smithsonian Contributions to the Marine Sciences,


Summary: number 20, 15 pages, 5 figures, 5 tables, 1983.—Surveys by the Johnson-Sea-Link submersibles have revealed the presence of large populations of black Centrostephanus, superficially resembling Diadema antillarum Philippi, along the shelf edge prominences off the east coast of Florida in depths of 48-80 meters. Typical habitats are aggregations of dead coral rubble, with seasonal growths of leafy red algae. Some aspects of the biology of these echinoids are described. We affirm that only a single species of the genus, Centrostephanus longispinus (Philippi), occurs in the Atlantic Ocean. As Fell (1975) and Serafy (1979) have shown, western Atlantic populations can be referred to the subspecies Centrostephanus longispinus rubicingulus H.L. Clark, which usually differs from the typical subspecies in possessing uniformly black spines rather than banded purple and yellowish white spines when fully grown. C besnardi Bernasconi from Isla Trindade, Brazil, is herein synonymized with C. longispinus rubicingulus. C. coronatus (Verrill) from California and the Galapagos Islands differs little from C. longispinus and the two species may yet prove to be subjective synonyms. There is some evidence to suggest that Gulf of California populations of C. coronatus differs from California populations at the subspecies level. OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded

David L. Pawson; John E. Miller


Bacterial clearance in the sea urchin, Strongylocentrotus purpuratus.

  Open Access Theses and Dissertations

Summary: ??Characteristics of bacterial clearance were investigated in the purple sea urchin, Strongylocentrotus purpuratus (Echinodermata: Echinoidea). Primary clearance kinetics were determined for three bacteria, a marine… (more)

Yui, Mary A.


The reproduction and recruitment of the sand dollar Arachnoides placenta (L.) (Echinoidea: Echinodermata) from differing habitats on the North Queensland coast.

  Open Access Theses and Dissertations

Summary: ??The reproductive periodicity, recruitment and population studies of the intertidal Indo-Pacific echinoid, Arachnoides placenta (Linnaeus), were investigated from April 2001 to September 2002 at sites… (more)

Haycock, Lucy Jessica


Submetido em 5 de janeiro de 2010. Aceito em 12 de junho de 2010. Universidade Federal do Rio de Janeiro, Departamento de Gentica, Laboratrio de Biodiversidade Molecular. Cidade

  Biology and Medicine Websites

Summary: .68, n.1-2, p.17-23, jan./jun.2010 ISSN 0365-4508 THE SEA URCHIN ECHINOMETRA LUCUNTER (ECHINODERMATA found near the sea urchin Echinometra lucunter, suggesting a possible relationship between them of the sea urchin as a refuge by this goby. Key words: Micro-habitat. Spatial distribution. Reef fish

Solé-Cava, Antonio M.


Echinoidea) from the Atlantic and Eastern Pacific Oceans


Summary: Emphasis upon publication as a means of "diffusing knowledge " was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge. " This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series:

Smithsonian Contributions To Zoology; S. Dillon Ripley; David L. Pawson; John E. Miller


Le genre Ceratocystis Jaekel (Echinodermata, Stylophora)

  University of Kansas - KU ScholarWorks

Summary: la présence ou l'absence d'orifices le long de cette suture revêtait un caractère facultatif. Ces orifices varient de taille chez un même individu, leur grand axe pouvant passer de 0.6 à 2 mm. et leur petit axe, de 0.3 à 0.5 mm. Des espaces de 0.3 à... apparences de pores suturaux) entre les pièces de leur sque- lette et variées sont les fonctions possibles de ces pores (ou de ces espaces non calcifiés). Ne trouve- t-on pas chez Cothurnocystis americana des pores suturaux simples (qui d'ailleurs ne...

Ubaghs, G.


Supplement to Echinodermata Articles 8-10

  University of Kansas - KU ScholarWorks

Summary: and Tile Company on South Park road 0.3 mile southeast of junction with old National Turnpike, 1.1 miles southeast of Coral Ridge and about 3 miles west of Kentucky Turnpike, also 1.2 miles northwest of sum- mit of Button Mould Knob, about 15 miles south... and Tile Company on South Park road 0.3 mile southeast of junction with old National Turnpike, 1.1 miles southeast of Coral Ridge and about 3 miles west of Kentucky Turnpike, also 1.2 miles northwest of sum- mit of Button Mould Knob, about 15 miles south...

Moore, R. C.; Jeffords, Russell M.; Miller, T. H.


morphology Open Access


Summary: Advances in digital data acquisition, analysis, and storage have revolutionized the work in many biological disciplines such as genomics, molecular phylogenetics, and structural biology, but have not yet found satisfactory acceptance in morphology. Improvements in non-invasive imaging and three-dimensional visualization techniques, however, permit high-throughput analyses also of whole biological specimens, including museum material. These developments pave the way towards a digital era in morphology. Using sea urchins (Echinodermata: Echinoidea), we provide examples illustrating the power of these techniques. However, remote visualization, the creation of a specialized database, and the implementation of standardized, world-wide accepted data deposition practices prior to publication are essential to cope with the foreseeable exponential increase in digital morphological data.

Er Ziegler; Malte Ogurreck; Thomas Steinke; Felix Beckmann; Steffen Prohaska; Andreas Ziegler


Echinodermata of the West Flower Garden Reef Bank

  Texas A&M University - TxSpace

Summary: and format follow that of the Bulletin of Marine Science. Figure 1. Location of West Flower Garden Bank. positively identified as a flourishing coral reef (Pulley, 1963). Since that time, the relative inaccessibility of the reef to all but commercial... much of the collecting discussed above was done on or in the vicinity of coral reefs, information on Gulf reefs was notably deficient. Ives (1890) reported on the fauna of the reefs near Vera Cruz. Moore (1958) listed field observations on the fauna...

Burke, Thomas Edward


Zoogeography and systematics of the shallow water echinodermata of Texas

  Texas A&M University - TxSpace

Summary: the ~hoyyet' of M~e t Stt o Hedgpeth 1953, Hildebrand 1954, Harper 1970, Defenbaugh 1976, Pequegnat 1983, Britton and Norton 1989). Whitten et al ( 1950) examined the jetties . Laguna Madre with its associated bays was surveyed by Simmons ( 1957), Breuer...~te t 1 u(l( (3) ~st ect d ul (4) A. tlc 1 tus d~(i tus Agassiz, A. 1869:307 (2); Boone 1928:5 ( I); Britton & Morton 1989:351 (I); Caso 1943:22 (I), 1953:221 (I), 1961:27 (I); Cerame-Vivas & Gray 1966:263 (I); Clark, H. L. 1898a:5 (I), 1901a:236 (I...

Pomory, Christopher Mark



  Environmental Sciences and Ecology Websites

Summary: populations of Aeal1lhaster, which might follow on construction of a sea-level Central American canal feed- ing, 20% resting, and 10% traveling. There was no clear-cut diurnal behavior, and no tendency of the eastern tropical Pacific representatives of the genus. Furthermore, the possible construction of a Central


Evolution and Systematics of Holothuroidea (Echinodermata) Alexander M. Kerr

  Environmental Sciences and Ecology Websites

Summary: , planktotrophic larvae are restricted to two evolutionarily disparate groups largely restricted to coral reefs that holothuroids survived the end Permian extinction more successfully than other echinoderms. Like many other

Kerr, Alexander M.


Review Global Diversity and Phylogeny of the Asteroidea (Echinodermata)


Summary: popularly known as starfish or sea stars, are ecologically important and diverse members of marine ecosystems in all of the world’s oceans. We present a comprehensive overview of diversity and phylogeny as they have figured into the evolution of the Asteroidea from Paleozoic to the living fauna. Living post-Paleozoic asteroids, the Neoasteroidea, are morphologically separate from those in the Paleozoic. Early Paleozoic asteroid faunas were diverse and displayed morphology that foreshadowed later living taxa. Preservation presents significant difficulties, but fossil occurrence and current accounts suggests a diverse Paleozoic fauna, which underwent extinction around the Permian-Triassic interval was followed by re-diversification of at least one surviving lineage. Ongoing phylogenetic classification debates include the status of the Paxillosida and the Concentricycloidea. Fossil and molecular evidence has been and continues to be part of the ongoing evolution of asteroid phylogenetic research. The modern lineages of asteroids include the Valvatacea, the Forcipulatacea, the Spinlosida, and the Velatida. We present an overview of diversity in these taxa, as well as brief notes on broader significance, ecology, and functional morphology of each. Although much asteroid taxonomy is stable, many new taxa remain to be discovered with many new species currently awaiting description. The Goniasteridae is currently one of the most diverse families within the Asteroidea. New data from molecular phylogenetics and the advent of global biodiversity databases, such as the World Asteroidea Database

Christopher L. Mah; Daniel B. Blake


The Importance of Archived Programmatic Collections: Minerals Management Service and Department of

  Biology and Medicine Websites

Summary: that Compare Changes in Biodiversity over Time Porifera Cnidaria Echinodermata Annelida Mollusca Arthropoda Described Total: 298 175 - Annelida 87 - Arthropoda 2 - Chordata 11 - Cnidaria 6 - Echinodermata 8

Mathis, Wayne N.


Phylogeny of Arenig to Caradoc crinoids (Phylum Echinodermata) and suprageneric classification of the Crinoidea

  University of Kansas - KU ScholarWorks

Summary: features of the arms, calyx, and column. Thus, 21 characters were used for cladids and the flexible; 27 Aethocrinea Cladida ,tinerata Disparida Caryocystites Aethocrinus Perittocrinus Tetracionocrinus Brechmocrinus Elpasocrinus Palaeocrinus Archaetaxocrinus... (16 genera). The analysis included 18 characters (Appendix B, p. 34; basal concavity, arm number, and arm habit are constant) with a total of 54 character states. The 50-percent majority-rule tree is from 13 equally parsimonious trees of length 56...

Ausich, W. I.


Deep-sea ophiuroids (Echinodermata: Ophiuroidea: Ophiurida) from the Gulf of Cadiz (NE Atlantic)


Summary: The Ophiuroidea collected from mud volcanoes and adjacent bathyal environments from the Gulf of Cadiz are reviewed. Thirteen species from six families—Ophiacanthidae, Ophiactidae, Amphiuridae, Amphilepididae, Ophiuridae and Ophiolepididae—were identified. A direct relationship to the chemosynthetic assemblages has not been established as the ophiuroids found in the mud volcanoes do not appear to have novel morphological adaptations and also occur in non-reducing environments. The ophiuroid fauna from the Gulf of Cadiz differs from other cold seep regions not only by the high species richness but also because members of Amphiuridae are dominant both in number of species and abundance. One species previously unknown, Ophiopristis gadensis sp. nov., (Ophiacanthidae) was collected from a dead cold-water coral thicket at the flank of a mud volcano and differs from its congeners in the type of disk spines which are more rugose and not smooth as in most of the other species, the presence of the thickened integument in larger specimens and the distinct separation between the oral papillae and the second oral tentacle scales. Key words: mud volcanoes, reducing environments, macrofauna, biodiversity

Clara F. Rodrigues; Gordon L. J. Paterson; Andrew Cabrinovic; Marina R. Cunha


Phyllophorus (Phyllophorus) maculatus, a new species of sea cucumber from the Yellow Sea (Echinodermata: Holothuroidea: Dendrochirotida)


Summary: Phyllophorus (Phyllophorus) maculatus new species is described from a depth of 22–45 meters near the western edge of the Yellow Sea. The body is cylindrical, with body wall ossicles present only in the anal region. Ossicles are four-pillared tables with low spires and indented disc margin. A revised key to the eleven phyllophorine (Family Phyllophoridae, Subfamily Phyllophorinae) species now known from China is presented.

Yulin Liao; David L. Pawson; Wei Liu


Onderwerpscodes Zologie / Subject headings Zoology, 2010, Maart1 Code rubriek

  Biology and Medicine Websites

Summary: Echinodermata (stekelhuidigen) Echinodermata 06.12 III p 03 P Hemichordata (zakpijpen en salpen) en Urochordata (manteldieren) Hemichordata (sea-squirts and salps) and Urochordata 06.12 III q 03 Q Vertebrata (gewervelden

Galis, Frietson



  Biology and Medicine Websites

Summary: . Grupos lofoforados: Bryozoa, Brachiopoda. Os deuterost�mios: Filos Echinodermata, Hemichordata e Chordata moluscos bivalves. 3) Deuterostomia: Echinodermata e Hemichordata 3.1 análise comparativa dos modelos de

Floeter, Sergio Ricardo


Short Communication Molecular systematics of the genus Holothuria in the Mediterranean

  Environmental Sciences and Ecology Websites

Summary: and Northeastern Atlantic and a molecular clock for the diversification of the Holothuriidae (Echinodermata: Phylogeny rrnL Cox1 mtDNA Holothuria Roweothuria Holothuriidae Echinodermata a b s t r a c t This work

Teixeira, Sara


Fatty acid composition of larvae of the sand dollar Dendraster excentricus (Echinodermata) might reflect FA composition of the diets

  Engineering Websites

Summary: Fatty acid composition Algal diets Microencapsulated diet Larval growth and development Fatty acid (FA. The percentage of saturated fatty acids (SAFA), short and long chain polyunsaturated fatty acids (PUFA) differed, myristic and palmitic acids, and short chain polyunsaturated fatty acids such as, linoleic, linolenic

George, Sophie B.


Aspects of the biology and ecology of some intertidal Holothurians (Echinodermata) along the Eastern Cape coast of South Africa.

  Open Access Theses and Dissertations

Summary: ??Four species of dendrochirote holothurians, Roweia stephensoni John, Pseudocnella sykion Lampert, Aslia spyridophora Clark, Roweia frauenfeldi frauenfeldi Ludwig, and one aspidochirote holothurian, Neostichopus grammatus Clark,… (more)

Foster, Gregory George


Stalked crinoids (Echinodermata) collected by the R/V Polarstern and Meteor in the south Atlantic and in Antarctica


Summary: During the last decades, R/V Meteor and R/V Polarstern deep-sea investigations in the south Atlantic and neighbouring Southern Ocean collected new samples of stalked crinoids belonging to the families Bathycrinidae, Phrynocrinidae and Hyocrinidae which are herein described. The species found are Bathycrinus australis A.H. Clark, 1907b (the most abundant), Dumetocrinus aff. antarcticus (Bather, 1908), Hyocrinus bethellianus Thomson, 1876, Feracrinus heinzelleri new species, and Porphyrocrinus cf. incrassatus (Gislén, 1933). As only stalk fragments of bathycrinids were frequently collected, a distinction between the two Atlantic species B. australis and B. aldrichianus is proposed using characters of columnal articulations. A few specimens attributed to Porphyrocrinus cf. incrassatus, Hyocrinus bethellianus and Hyocrinus sp. collected by the N/O Jean Charcot on the Walvis Ridge are also described, plus a new specimen of Porphyrocrinus incrassatus collected in the central mid-Atlantic. Biogeography and close affinities between species in the genera Bathycrinus and Porphyrocrinus suggest an Antarctic origin of some stalked crinoids among the north Atlantic deep-sea fauna. The presence of B. australis in both the Angola and Cape basins suggests that the Walvis Ridge is not a bio-geographical barrier for this relatively eurybathic species, which can attach to hard substrates as well as anchor in sediment. The genus Dumetocrinus seems to be an example of colonization of the west Antarctic platform from deeper environment where its ancestor lived.

Marc Eléaume; Jens-michael Bohn; Michel Roux; Nadia Améziane


Eumetazoa: Bilateria: Deuterostomia Mouth from second opening formed in embryo

  Biology and Medicine Websites

Summary: · Unique water-vascular system ­ madreporite · Tube feet · Ambulacral groove · Complete gut ­ mouth usually ­ Ophiuroidea ­ Echinoidea ­ Holothuroidea ­ Crinoidea #12;Crinoidea Figure 33.44 Sea lilies, feather stars



  Biology and Medicine Websites

Summary: Crustacea e Mollusca. Unidade 4: Organismos planctônicos: utilizados como alimento na aquacultura, em (Cirripedia), Mollusca, Urochordata (Ascidiacea), Ectoprocta (Bryozoa) e Echinodermata. Unidade 5: Fauna de

Floeter, Sergio Ricardo


Clitellum, Cocon, Coelome, Cuticule, Endoderme, Errant, Hmoglobine, Hirudinae, Homologie srielle, Msoderme, Mtamre, Mtamrisation, Monoque, Mouvement

  Environmental Sciences and Ecology Websites

Summary: Cycliophora Rotifera Annelida Mollusca Sipuncula Nemertea Bryozoa Brachiopoda Phoronida Arthropoda Onychophora Arthropoda Mollusca Chordata Playhelminthes Nematoda Annelida Porifera Echinodermata autre 3 Eucoelomate

Blouin-Demers, Gabriel


ISSN 1175-5326 (print edition) ZOOTAXA ISSN 1175-5334 (online edition)


Summary: Reassessment of the classification of the Ophiuroidea (Echinodermata), based on morphological characters. I. General character evaluation and delineation of the families Ophiomyxidae and Ophiacanthidae

Alexander Martynov


A comparison of the distribution of the Echinodermata of a coral community with that of a nearby rock outcrop on the Texas continental shelf

  Texas A&M University - TxSpace

Summary: on the northwestern Gulf of Yiexico shelf during 1974 are listed and described A comparison is made of echinoderms at Stetson Bank~ a rock outcrop, with those of the nearby living coral reefs, the East and fest Flower Gardens. The study sites are briefly described... Flower Garden are the northernmost flourishing coral reefs found in the Gulf of Mexico (Edward@ 1971). All evidence to date indicates that the Flower Gardens harbour the only thriving coral reefs among these shelf edge banks Edwards (1971) separates...

DuBois, Random


Calbindin-D32k Is Localized to a Subpopulation of Neurons in the Nervous System of the Sea Cucumber Holothuria glaberrima (Echinodermata)


Summary: Members of the calbindin subfamily serve as markers of subpopulations of neurons within the vertebrate nervous system. Although markers of these proteins are widely available and used, their application to invertebrate nervous systems has been very limited. In this study we investigated the presence and distribution of members of the calbindin subfamily in the sea cucumber Holothuria glaberrima (Selenka, 1867). Immunohistological experiments with antibodies made against rat calbindin 1, parvalbumin, and calbindin 2, showed that these antibodies labeled cells and fibers within the nervous system of H. glaberrima. Most of the cells and fibers were co-labeled with the neural-specific marker RN1, showing their neural specificity. These were distributed throughout all of the nervous structures, including the connective tissue plexi of the body wall and podia. Bioinformatics analyses of the possible antigen recognized by these markers showed that a calbindin 2-like protein present in the sea urchin Strongylocentrotus purpuratus, corresponded to the calbindin-D32k previously identified in other invertebrates. Western blots with anti-calbindin 1 and anti-parvalbumin showed that these markers recognized an antigen of approximately 32 kDa in homogenates of radial nerve cords of H. glaberrima and Lytechinus variegatus. Furthermore, immunoreactivity with anti-calbindin 1 and anti-parvalbumin was obtained to a fragment of calbindin-D32k of H. glaberrima. Our findings suggest that calbindin-D32k is present in invertebrates and its sequence is more similar to the vertebrate calbindin 2 than to calbindin 1. Thus, characterization of calbindin-D32k in echinoderms provides an important view of the evolution of this protein family and represents a valuable marker to study the nervous system of invertebrates.

Carlos A. Díaz-balzac; Maríai. Lázaro-peña; Enrique M. García-rivera; Carlos I. González; José E. García-arrarás


Ecology of deep-sea Asteroidea from Atlantic Canada.

  Open Access Theses and Dissertations

Summary: ??Sea stars (Echinodermata: Asteroidea) from shallow-water habitats worldwide are known to influence local biodiversity and community structure through their feeding behaviours. Deep-sea (> 200 m)… (more)

Gale, Katherine Sarah Petra


Morphologie évolutive et fonctionnelle des hémichordés.

  Open Access Theses and Dissertations

Summary: ??L’embranchement Hemichordata regroupe les classes Enteropneusta et Pterobranchia. Hemichordata constitue, avec l’embranchement Echinodermata, le groupe-frère des chordés. Les entéropneustes sont des organismes vermiformes solitaires qui… (more)

Gonzalez, Paul


AN ABSTRACT OF THE THESIS OF Timothy Seung-chul Lee for the degree of Master of Science in Environmental Science

  Geosciences Websites

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

Goldfinger, Chris


Animaux: structures et BIO2525 -Universit d'Ottawa

  Environmental Sciences and Ecology Websites

Summary: 'espèces Apicomplexa Sarcomastigophora Ciliophora Arthropoda Mollusca Chordata Playhelminthes Nematoda Annelida · Loup (Canis lupus) Phylum Chordata · �toile de mer Phylum Echinodermata · Moustique Phylum Arthropoda

Blouin-Demers, Gabriel


The effect of environmental salinity on organoleptic characteristics of penaeid shrimp

  Texas A&M University - TxSpace

Summary: Huviatilis ala, arg, gly, glu, pro Simpson et al. , 1959 Various invertebrates in the phyla: Coelenterate, Arthropoda, Molluscs, Echinodermata ala, arg, asp, glu, gly. tau Lynch and Wood, 1966 H ~tt 1 ala, arg, glu, gly, tau Schoffeniels, 1967...

Papadopoulos, Linda Suter


Bell Pettigrew Museum of Natural History

  Environmental Sciences and Ecology Websites

Summary: ://biology.st-andrews.ac.uk #12;Phylum Sub phylum Super class Class Body Plan: · Bilaterally symmetrical, but appearing 5 rayed with the mesoderm · Complex water vascular system Class: Echinoidea Order: Cidaroida Order: Echinothuroida Order: Neolampadoida Order: Holasteroida Class: Holothuroidea Order: Dendrochirotida Order: Dactylochirotida Order

Brierley, Andrew


Mol. Biol. Evol. 16(7):938952. 1999 1999 by the Society for Molecular Biology and Evolution. ISSN: 0737-4038

  Biology and Medicine Websites

Summary: . ISSN: 0737-4038 Evolution of Sea Urchin Retroviral-Like (SURL) Elements: Evidence from 40 Echinoid conducted a phylogenetic survey of sea urchin retroviral-like (SURL) retrotransposable elements in 33 species of the class Echinoidea (sea urchins, sand dollars, and heart urchins). A 263-bp fragment from

Bermingham, Eldredge


Treatise on Invertebrate Paleontology, Part W, conodonts, conoidal shells, worms, trace fossils: comments and additions

  University of Kansas - KU ScholarWorks

Summary: . Zeitschr., v. 24, p. 76-90. (4) WAAGEN, WILLIAM, 1885, Salt Range Fossils. v. 1. Productus Limestone Fossils, Pt. 5, Bryozoa-Annelida- Echinodermata: Palaeontologia Indica, ser. 13, v. 1, p. 771-834, pl. 87-96. CURT TEICHERT Paleontological Institute.... Zeitschr., v. 24, p. 76-90. (4) WAAGEN, WILLIAM, 1885, Salt Range Fossils. v. 1. Productus Limestone Fossils, Pt. 5, Bryozoa-Annelida- Echinodermata: Palaeontologia Indica, ser. 13, v. 1, p. 771-834, pl. 87-96. CURT TEICHERT Paleontological Institute...

Rhodes, F. H. T.; Hä ntzschel, W.; Mü ller, K. H.; Fisher, D. W.; Teichert, C.


Community structure and evaluation of trophic analysis in paleoecology Stone City Formation (Middle Eocene, Texas

  Texas A&M University - TxSpace

Summary: Phylum Arthropoda Phylum Echinodermata. Phylum Chordata Page 10$ 106 107 115 116 117 119 119 120 150 160 161 161 161 LIST OF TABLES Table 1. GRAIN SIZE ANALYSIS. 2. NUMBER OF GENERA AND SPECIES. NUMBER OF INDIVIDUALS NUMBER... Mollusca Scaphopoda Gastropoda Pelecypoda Cephalopoda Arthropoda Echinodermata Vertebrate Sample 1 Bottom G 9I. 2 ? 2 59 ? 69 ? - 2 01 ? 50 16 ? 17 1 - 1 1 ? 1 9 - 10 Sample 2 Middle G ? S 2 - 2 6-7 62 ? 81 2 ? 2 W3 - g8 17 ? 21...

Nelson, Penelope C


Tube foot preservation in the Devonian crinoid Codiacrinus from the Lower Devonian Hunsruck Slate, Germany

  Biology and Medicine Websites

Summary: on any fossil crinoid. Three lightly pyritized, flattened tube feet are preserved in a single interray papillae, similar to living cri- noids. Echinodermata, Crinoidea, soft-tissue preservation, pyritization clear evidence of pyritized tube feet in the Hunsruck Slate ophiuroid Bundenbachia beneckei Sturtz 1886

Kammer, Thomas


Accepted: 7 November 2003; published: 19 November 2003 1 ISSN 1175-5326 (print edition)

  Environmental Sciences and Ecology Websites

Summary: .mapress.com/zootaxa/ A new viviparous species of asterinid (Echinodermata, Asteroidea, Asterinidae) and a new genus, Nova Scotia, Canada email:michael.hart@dal.ca Abstract This paper describes a new species of viviparous the concept of a pan-tropical assemblage of species for which a new genus, Cryptasterina, is created. All

Hart, Michael


An Ancient Repeat Sequence in the ATP Synthase b-Subunit Gene of Forcipulate Sea Stars

  Biology and Medicine Websites

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

Foltz, David W.


Universidade Federal do Rio de Janeiro Instituto de Biologia

  Environmental Sciences and Ecology Websites

Summary: - M�DULO: MOLLUSCA Lúcia Siqueira Campos - M�DULO: ECHINODERMATA & GRUPOS LOFOFORADOS 06/fev Lophophorata Annelida 13/mar Annelida 14/mar Annelida 20/mar Avaliação de Annelida 21/mar Mollusca 27/mar Mollusca 28/mar Mollusca 03/abr Mollusca 04/abr Mollusca 10/abr Mollusca 11/abr Mollusca 17/abr PÁSCOA 18/abr

Paiva, Paulo Cesar de



  Biology and Medicine Websites

Summary: , Hong Kong, 1998, pp 171-188. #12;172 symmetric species (e.g., Echinodermata), almost all living Tübingen, Germany ABSTRACT Human faces are approximately bilaterally symmetric. We study the ability of different people can be very similar to each other compared to objects in other object classes. Human

Troje, Nikolaus


Mitochondrial pathway of apoptosis is ancestral in metazoans

  Biology and Medicine Websites

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

Alvarado, Alejandro Sánchez


Evolution of the chordate body plan: New insights from phylogenetic analyses of deuterostome phyla

  Biology and Medicine Websites

Summary: Echinodermata, Hemichordata, and Chordata. Chordata is composed of three subphyla, Verte- brata, Cephalochordata, Urochordata, Hemichordata, and Echi- nodermata. Hemichordates include two distinct classes, the en- teropneust-like ancestor (reviewed in refs. 9 and 10) or from calcichordates (14). The phylum Hemichordata consists

Cameron, Chris B.


Geology of the Stairway Mountain Area, Brewster County, Texas

  Texas A&M University - TxSpace

Summary: outcrops of the Kiamichi on Stairway Mountains Echinoidea Enallaster texanus Roemer Heteraster sp. Pelecypoda Arcs sp. ~CA 1 t* (R ) E~xo a texana Roemer ~Gl ' H'll M P gl G, mucronata Gabb Ostrea sp. ~fhld p. Pecten spp Protocardia sp. Ga... calvini Clark Heteraster inflatus (Cragin) Salenia 2 (limonitic pseudomorph) Pelecypoda ~CH. 1. J'f. ~ft C g ' ~Exo a arietina Roemer R~~t1& 1 B E, drakei Cragin ~Gh ~St t ~omomca sp o Ostrea sp. Pecten (Meithea) texanus Roemer 31 Gastropoda...

Herring, Maxwell, Jr


DNA primers for amplification of mitochondrial cytochrome ALLOGALATHEA: A MONOSPECIFIC GENUS? 267 © 2011 The Linnean


Summary: We describe "universal " DNA primers for polymer-ase chain reaction (PCR) amplification of a 710-bp fragment of the mitochondrial cytochrome c oxidasesubunit I gene (COI) from 11 invertebrate phyla:Echinodermata, Mollusca, Annelida, Pogonophora, Arthropoda, Nemertinea, Echiura, Sipuncula, Pla-tyhelminthes, Tardigrada, and Coelenterata, as well as the putative phylum Vestimentifera. Preliminary comparisons revealed that these COI primers gener-ate informative sequences for phylogenetic analyses at the species and higher taxonomic levels.

M. Black; W. Hoeh; R. Lutz; R Vrijenhoek


with Notes on the


Summary: with Notes on the ^oroaster idae Echinodermata: Asteroidea) A SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • 1970 NUMBER 64SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Institution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge not strictly professional. " This keynote of basic research has been adhered to over the years in the issuance of thousands of titles in serial publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series:

Maureen E. Down; Smithsonian Contributions To Zoology; S. Dillon Ripley; Maureen E. Downey


Trends in the Discovery of New Marine Natural Products from Invertebrates over the Last Two Decades – Where and What Are We Bioprospecting?


Summary: It is acknowledged that marine invertebrates produce bioactive natural products that may be useful for developing new drugs. By exploring untapped geographical sources and/or novel groups of organisms one can maximize the search for new marine drugs to treat human diseases. The goal of this paper is to analyse the trends associated with the discovery of new marine natural products from invertebrates (NMNPI) over the last two decades. The analysis considers different taxonomical levels and geographical approaches of bioprospected species. Additionally, this research is also directed to provide new insights into less bioprospected taxa and world regions. In order to gather the information available on NMNPI, the yearlypublished reviews of Marine Natural Products covering 1990–2009 were surveyed. Information on source organisms, specifically taxonomical information and collection sites, was assembled together with additional geographical information collected from the articles originally describing the new natural product. Almost 10000 NMNPI were discovered since 1990, with a pronounced increase between decades. Porifera and Cnidaria were the two dominant sources of NMNPI worldwide. The exception was polar regions where Echinodermata dominated. The majority of species that yielded the new natural products belong to only one class of each Porifera and Cnidaria phyla (Demospongiae and Anthozoa, respectively). Increased bioprospecting efforts were observed in the Pacific Ocean, particularly in Asian countries that are associated with the Japan Biodiversity Hotspot and the Kuroshio Current. Although results show comparably less NMNPI from polar regions,

Miguel Costa Leal; João Puga; João Serôdio; Newton C. M. Gomes; Ricardo Calado


Pontarotti P: Metaphylogeny of 82 gene families sheds a new light on chordate evolution


Summary: Achieving a better comprehension of the evolution of species has always been an important matter for evolutionary biologists. The deuterostome phylogeny has been described for many years, and three phyla are distinguishable: Echinodermata (including sea stars, sea urchins, etc…), Hemichordata (including acorn worms and pterobranchs), and Chordata (including urochordates, cephalochordates and extant vertebrates). Inside the Chordata phylum, the position of vertebrate species is quite unanimously accepted. Nonetheless, the position of urochordates in regard with vertebrates is still the subject of debate, and has even been suggested by some authors to be a separate phylum from cephalochordates and vertebrates. It was also the case for agnathans species –myxines and hagfish – for which phylogenetic evidence was recently given for a controversial monophyly. This raises the following question: which one of the cephalochordata or urochordata is the sister group of vertebrates and what are their relationships? In the present work, we analyzed 82 protein families presenting homologs between urochordata and other deuterostomes and focused on two points: 1) testing accurately the position of urochordata and cephalochordata phyla in regard with vertebrates as well as chordates monophyly, 2) performing an estimation of the rate of gene loss in the Ciona intestinalis genome. We showed that the urochordate phyla is the vertebrate sister group and that gene loss played a major role in structuring the urochordate genome.

Re Vienne; Pierre Pontarotti


Viviparity in the Sea Star Cryptasterina hystera (Asterinidae)—Conserved and Modified Features in Reproduction and Development


Summary: Abstract. Cryptasterina hystera has a highly derived life history with intragonadal development and juveniles that emerge from the parent’s reproductive tract. The gonads are ovotestes with developing eggs separated from sperm by follicle cells. C. hystera has typical echinosperm that must enter the gonoduct of conspecifics to achieve fertilization. During oogenesis, an initial period of yolk accumulation is followed by hypertrophic lipid deposition, the major contributor to the increase in egg size. 1-Methyladenine induces egg maturation and ovulation, but the spawning component of the hormonal cascade is suppressed. This is the major alteration in reproduction associated with evolution of viviparity in C. hystera. The switch to viviparity was not accompanied by major change in gonad structure, indicating there were few or no anatomical constraints for evolution of a marsupial function for the gonad. Despite their intragonadal habitat, the brachiolaria are equipped for a planktonic life, swimming in gonadal fluid. During the gastrula stage, lipid provisions are released into the blastocoel where they are stored for juvenile development. The eggs of C. hystera have light and dark cytoplasmic regions that mark animalvegetal polarity. The dark pigment provided a marker to follow the fate of vegetal cells. Live birth is rare in the Echinodermata and the incidence of this form of brooding in the phylum is reviewed.

Maria Byrne




Summary: Ansrnecr. Procedures for revealing the three-dimensional arrangement of calcareous sclerites, spicules, or ossicles embedded within connective tissue in formalin fixed invertebrates are described. Spicules are stained with alizarin red S following maceration of preserved animals or colonies with either trnrsin or KOH solutions. Connective tissue is stained with alcian blue in different samples prior to maceration. Stained animals or colonies are cleared in glycerin. This method for revealing spicular structure and arrangement and the gross morphology of connective tissues offers several advantages over either scanning electron microscopy or reconstruction from serial sections. Invertebrates from many phyla, including Porifera, Cnidaria, and Echinodermata. have embedded in their connective tissues small calcareous or siliceous structures known variously as spicules, sclerites, or ossicles. (For ease of discussion in this paper, we refer to all such structures as spicules.) The architecture of skeletons composed of large, regularly arranged spicules can be studied by dissection (t.9., Eylers 1976). Scanning electron microscopy can resolve the arrangement of small, densely packed spicules (t.g., Muzik and

unknown authors

Some links on this page may take you to non-federal websites. Their policies may differ from this site.