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alvinellidae - Article and Reference from OnPedia.com The Alvinellidae are a family of small, deep-sea polychaete worms endemic to hydrothermal vents in the Pacific Ocean. Members of the Alvinellidae are noted for their exceptional heat tolerance: one species, the Pompeii worm (Alvinella pompejana), is thought to be the most heat-tolerant complex organism on Earth. However, they do rely on an episymbiotic relationship with thermophilic bacteria; hair-like growths of the bacteria living on the worm's back are thought to offer thermal protection to the worm. www.onpedia.com /encyclopedia/alvinellidae   (145 words)

VLIZ - Integrated Marine Informations System - IMIS In this study we assessed the phylogenetic relationships of the hydrothermal vent polychaete group Alvinellidae, based on parsimony analyses of combined morphological and molecular data. Alvinellidae, Ampharetidae and Terebellidae, as currently delineated, are monophyletic. Previous statements that Alvinellidae are either nested within Ampharetidae or the sister to this taxon were not supported. www.vliz.be /vmdcdata/imis2/ref.php?refid=55575   (203 words)

Amazon.com: Alvinellidae: Books   (Site not responding. Last check: 2007-09-10) Systematics, phylogeny, ecology and distribution of the Alvinellidae (Polychaeta) from deep-sea hydrothermal vents. Alvinellidae ("Pompeii worms" and "Palm worms") are a relatively recently discovered... Three groups with spermathecae, the Alvinellidae, Histriobdellidae and Pisionidae, have sperm that are aflagellate (Jamieson et... www.amazon.com /s?ie=UTF8&keywords=Alvinellidae&tag=httpexplaguid-20&index=books&link_code=qs&page=1   (899 words)

Cultural and molecular approaches of the microbial assemblages associated with the hydrothermal v... Cultural and molecular approaches of the microbial assemblages associated with the hydrothermal vent polychaetes of the family Alvinellidae Cultural and molecular approaches were used to analyse the microbial assemblages associated to the deep-sea hydrothermal vent polychaete worms of the family Alvinellidae. In a first part of the work, the populations associated to three alvinellid species from the Juan de Fuca Ridge (Paralvinella palmiformis, Paralvinella pandorae and Paralvinella sulfincola) were identified by phylogenetic analyses. www.ifremer.fr /docelec/notice/2003/notice332-EN.htm   (256 words)

IngentaConnect Molecular and morphological evidence of Alvinellidae relationship...   (Site not responding. Last check: 2007-09-10) IngentaConnect Molecular and morphological evidence of Alvinellidae relationship... Rousset, V., Rouse, G. W., Féral, J.-P., Desbruyères, D. and Pleijel, F. Molecular and morphological evidence of Alvinellidae relationships (Terebelliformia, Polychaeta, Annelida). You will be able to remove this item from your shopping cart at any time before you have completed check-out. www.ingentaconnect.com /search/article?title=Oweniidae&title_type=tka&year_from=1998&year_to=2005&database=1&pageSize=20&index=7   (262 words)

VITE SENZA FINE DE POMPEII   (Site not responding. Last check: 2007-09-10) Il nome di famiglia della vite senza fine de Pompeii Alvinellidae ed il genere Alvinella nome entrambi deriva da DSV Alvin, il veicolo sommergibile per tre persone utilizzato durante la scoperta degli sfiati idrotermali e della loro fauna durante gli anni 70 tardi. La famiglia Alvinellidae contiene altre otto specie, ma nessun abbinano la tolleranza termica della vite senza fine de Pompeii. Raggiungendo una lunghezza di fino a 13 centimetri, le viti senza fine de Pompeii sono un grey pallido con le parti posteriori "pelose"; questi "capelli" sono realmente batteri che si pensano per permettersi la vite senza fine un certo grado di isolamento. www.facteri.com /wiki/it/vi/Vite%20senza%20fine%20de%20Pompeii.htm   (507 words)

ALVINELLIDAE   (Site not responding. Last check: 2007-09-10) O Alvinellidae é uma família dos sem-fins pequenos, deep-sea dos poliquetos endemic aos respiradouros hydrothermal no oceano pacífico. Os membros do Alvinellidae são anotados para sua tolerância excepcional do calor: uma espécie, o sem-fim de Pompeii, é pensada para ser o organismo complexo o mais heat-tolerant na terra. It is licensed under the GNU free documentation license. www.faktoport.com /wiki/pt/al/Alvinellidae.htm   (174 words)

Pompeii worm The Pompeii worm's family name Alvinellidae and genus name Alvinella both derive from DSV Alvin, the three-person submersible vehicle used during the discovery ofhydrothermal vents and their fauna during the late 1970s. The family Alvinellidae containseight other species, but none match the Pompeii worm's heat tolerance. Reaching a length of up to 13 centimetres (5 inches), Pompeii worms are a pale grey with "hairy" backs; these "hairs" areactually bacteria which are thought to afford the worm some degree of insulation.Glands on the worm's back secrete a mucus which the bacteria feed on (see symbiosis). www.therfcc.org /RFCC/pompeii-worm-265866.html   (415 words)

Inter Research » MEPS » v123 » p125-136 Evidence for differences in the allozyme thermostability of deep-sea hydrothermal vent polychaetes (Alvinellidae): a possible selection by habitat S, natural radioactivity and temperatures ranging from 5 to 80*C which vary greatly with time. The Alvinellidae, as many vent organisms, have developed specific adaptations to cope with this harsh and unstable environment. www.int-res.com /abstracts/meps/v123/p125-136   (336 words)

SEM-FIM DE POMPEII   (Site not responding. Last check: 2007-09-10) O campeão precedente da tolerância do calor era a formiga do deserto de Sahara, que pode lidar com as temperaturas até de 55°C. O nome de família Alvinellidae e genus do sem-fim de Pompeii Alvinella conhecido ambos deriva-se de DSV Alvin, o veículo submergível three-person usado durante a descoberta de respiradouros hydrothermal e de seu fauna durante os 1970s atrasados. A família Alvinellidae contem outras oito espécies, mas nenhumas combinam a tolerância do calor do sem-fim de Pompeii. www.faktoport.com /wiki/pt/se/Semfim%20de%20Pompeii.htm   (459 words)

Ecophysiologie Abstracts 1997 Some of the vent fauna such as the endemic polychaete family Alvinellidae are thought to lack a planktotrophic larval stage and therefore not to broadcast-release their offspring. A propagule flux model based on a matrix of intersite distances, long-term current-meter data, and information on the biology and ecology of Alvinellidae was developed to test this hypothesis. First, some aspects of the biology of Alvinellidae have been overlooked and long-distance dispersal does occur. www.sb-roscoff.fr /Ecophy/Abst-1997.html   (2021 words)

MarBEF It allows you to subscribe to the weekly news bulletins, post messages on the forum and as a registered MarBEF member you will be able to access members only pages. Reproductive biology and population structure of the deep-sea hydrothermal vent worm Paralvinella grasslei (Polychaeta: Alvinellidae) at 13°N on the East Pacific Rise Zal, F.; Jollivet, D.; Chevaldonné, P.; Desbruyères, D. Reproductive biology and population structure of the deep-sea hydrothermal vent worm Paralvinella grasslei (Polychaeta: Alvinellidae) at 13°N on the East Pacific Rise. www.marbef.org /modules.php?name=People&lvl=Ref&refid=77805   (128 words)

SICB - 2006 meeting - Abstract Details To further understand the phylogenetic potential of complete mitochondrial genome sequence data in Annelida (segmented worms), we obtained mitochondrial genome data for three Terebelliformia worms (Eclysippe vanelli--Ampharetidae, Pista cristata--Terebellidae and Terebellides californica--Trichobranchidae) and combined these with available GenBank data. The goal of this work is to elucidate phylogenetic relationships among the 5 recognized families within Terebellidormia: Alvinellidae, Ampharetidae, Pectinariidae, Terebellidae and Trichobranchidae. Sequence results show similar gene arrangement in these three taxa to annelid genomes reported previously, suggesting the gene order is conserved across Annelida. www.sicb.org /meetings/2006/schedule/abstractdetails.php3?id=858   (168 words)

CSA Taxonomically, the symbiotic associations range on the host side from a few genera within else aposymbiotic groups (Tubificidae in the Oligochaeta or Glossiphoniidae in the Hirudinea) to higher taxa with all their species living in symbiosis (Siboglinidae, Alvinellidae in the "Polychaeta"). The ties between partners range from rather loose and occasional associations (some mud-dwelling tubificids) over regular ectosymbiosis (Alvinellids) to obligatory extra- or intracellular incorporation into the body (gutless oligochaetes, glossiphoniid leeches, siboglinid tube worms). In the sea, chemoautotrophy in sulfidic, otherwise hostile environments is a major factor driving the symbioses, but trophic specializations such as digestion of wood or blood also seem to favor a coordinated and mutually beneficial association with bacteria. md1.csa.com /partners/viewrecord.php?requester=gs&collection=ENV&recid=6146346&q=&uid=788854632&setcookie=yes   (225 words)

Faculty of Arts & Sciences: News and Events The research is described this week in the journal Science. Authors Peter R. Girguis of Harvard University and Raymond W. Lee of Washington State University studied Paralvinella sulfincola, a member of the Alvinellidae family of worms dwelling at ocean depths of some 2,200 meters off the Pacific coast of Washington. When the researchers placed them within a special high-pressure seawater aquarium with a sharp temperature gradient, these worms chose to remain at roughly 50 degrees Celsius for the duration of a seven-hour experiment. www.fas.harvard.edu /home/news_and_events/releases/worms_04132006.html   (586 words)

Evidence for differences in the allozyme thermostability of deep-sea hydrothermal vent polychaetes (Alvinellidae): A ... TI:           Evidence for differences in the allozyme thermostability of deep-sea hydrothermal vent polychaetes (Alvinellidae): A possible selection by habitat They experience transient anoxia, high levels of heavy metals and H sub(2)S, natural radioactivity and temperatures ranging from 5 to 80 degree C which vary greatly with time. Allelic fitness to temperature in a highly fluctuating environment may explain the high level of polymorphism found in alvinellids and may have also provided sufficient genetic divergence between individuals living in distinct thermal regimes to produce speciation. www.horta.uac.pt /projectos/asimov/Bibliography/Jollivet/Jollivet.htm   (273 words)

Polypeptide chain composition diversity of hexagonal-bilayer haemoglobins within a single family of annelids, the ... Desbruyères, D. and Laubier, L. Paralvinella grasslei, new genus, new species of Alvinellidae (Polycheata: ampharetidae) from the galapagos Rift geothermal vents. Desbruyères, D. and Laubier, L. (1986) Les Alvinellidae, une famille nouvelle d'annélides polychètes inféodées aux sources hydrothermales sous-marines: systématique, biologie et écologie. Tunnicliffe, V., Desbruyères, D., Jollivet, D. and Laubier, L. (1993) Systematic and ecological characteristics of Paralvinella sulfincola Desbruyères and Laubier, a new polychaete (family Alvinellidae) from northeast Pacific hydrothermal vents. content.febsjournal.org /cgi/content/full/267/16/5227   (4444 words)

MS931207 Thirty species were examined, and 17 distances were measured and analyzed using non-metric multidimensional scaling (n-MDS) and cluster analysis. The Terebelliformia (sensu Rouse and Pleijel 2001) is a group of sedentary polychaetes comprising the families Terebellidae, Ampharetidae, Alvinellidae, and Pectiinaridae. Analyses of neuropodial uncini in the families Terebellidae, Ampharetidae, Alvinellidae, and Pectiinaridae have shown that most morphological variation occurs in suprageneric taxa (Holthe 1986). www.sinica.edu.tw /zool/zoolstud/45.1OnlineFirst/MS931207.htm   (2335 words)

Background Report-Endeavour These pycnogonids are about 2 cm in diameter; they frequent the cooler areas of vents and graze on microbial filaments. Paralvinella palmiformis belongs to a polychaete family (Alvinellidae) known only from hot vents. The white mat is mucus and bacteria surrounded by limpets. www.pac.dfo-mpo.gc.ca /oceans/mpa/backgrnd-report_e.htm   (5406 words)

Ecophysiologie Publications Jollivet D., Desbruyères D., Ladrat C., Laubier L. Evidence for differences in the allozyme thermostability of deep-sea hydrothermal vent polychaetes (Alvinellidae): a possible selection by habitat. Zal, F., Green, B. N., Martineu, P., Lallier, F. H., Toulmond, A., Vinogradov, S. and Childress, J. Polypeptide chain composition diversity of hexagonal-bilayer haemoglobins within a single family of annelids, the Alvinellidae. Jouin-Toulmond, C., Mozzo, M. and Hourdez, S. Ultrastructure of spermatozoa in four species of Alvinellidae (Annelida: Polychaeta). www.sb-roscoff.fr /Ecophy/publis.html   (2896 words)

MBARI - Ridges 2005 Expedition Polychaetes, or marine bristle worms (relatives to earthworms),  occurred in abundance on the fl smokers. Three groups of  polychaetes dominated, scale-worms (Aphroditiformia), Pompeii worms  (Alvinellidae), and vestimentiferan giant tube-worms (now Siboglinidae; see below). Several different scale-worms were found (image on right is 3 cm long), some with dense bacterial  mats completly covering the scales of the animals. www.mbari.org /expeditions/ridges2005/august_18.htm   (1107 words)

DOCTORAL-THESES-ARCHIMER-INSTITUTIONAL-ARCHIVE-OF-IFREMER-(FRENCH-RESEARCH-INSTITUTE-FOR-EXPLOITATION-OF-THE-SEA)   (Site not responding. Last check: 2007-09-10) To develop an experimental infection in Crassostrea gigas, Vibrio strains were isolated and their virulence was experimentally evaluated. Cultural and molecular approaches of the microbial assemblages associated with the hydrothermal vent polychaetes of the family Alvinellidae - ALAIN, Karine Use of 'ocean color' data for improving coupled physical-biogeochemical model in coastal areas : Application to the R'io de la Plata and to the Bay of Biscay - HURET, Martin biblioteca.universia.net /html_bura/verColeccion/params/id/3231/start/40.html   (891 words)

MBARI - Easter Microplate Expedition 2005 There are no published accounts about juveniles for worms of the genus Alvinella, so this may be the first time juveniles have been found. Some development data is available for the other genus of Alvinellidae, Paralvinella, and so some comparative analysis will be possible. Left image: Limpets on the abdomen of a crab. www.mbari.org /expeditions/eastermicroplate/March24.htm   (683 words)

black smokers | MetaFilter Life on land didn't look so bad at that point. At any rate, it is fitting that one of those crazy deep sea vent extremophile microbes was named after Dr. Jannasch, and Alvin gave his name to the Alvinellidae tube worms that cluster around the fl smokers. Despite this most tenuous personal connection, I've had a soft spot for these bizarre underwater ecosystems ever since I met Alvin, Lulu and Dr Jannasch all those years ago. www.metafilter.com /mefi/54932   (811 words)

OceanExpert - Details of Jean-Pierre FERAL Impact of reproductive modes (efficace dispersal dapacities) on spatial and genetic structures of species and their evolutionary consequences.Echinocardium, Abatus, Amphipholis, Terebellida, Alvinellidae, Mytilus, Aulacomya, Sepia, Sepiola, Holothurioidea systematics. Echinocardium, Abatus, Amphipholis, Terebellida, Alvinellidae, Mytilus, Aulacomya, Sepia, Sepiola Rousset, V.,Rouse, G.W., Feral, J.-P.,Desbruyères, D., Pleijel, D., [2003] Molecular and morphological evidence of Alvinellidae relationships (Terebelliformia, Polychaeta, Annelida). www.oceanexpert.net /viewMemberRecord.php?&memberID=630   (438 words)

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