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Autore: Grafiati

Pubblicato: 31 agosto 2024

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1

Desbruyères, Daniel, e Lucien Laubier. "Les Alvinellidae, une famille nouvelle d'annélides polychètes inféodées aux sources hydrothermales sous-marines: systématique, biologie et écologie". Canadian Journal of Zoology 64, n. 10 (1 ottobre 1986): 2227–45. http://dx.doi.org/10.1139/z86-337.

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Examination of all the specimens collected from deep hydrothermal vents in the eastern Pacific allowed us to describe two new species and one new subspecies belonging to the genus Paralvinella Desbruyères and Laubier, 1982: P. pandorae sp.n., P. palmiformis sp. n., and P. pandorae irlandei ssp. n. Alvinella pompejana is split into two species, A. pompejana and A. caudata sp.n., based on to morphological and biochemical data. The six species and subspecies of Alvinellinae (Polychaeta: Ampharetidae) are well separated from all other terebellomorph species by the absence of differentiation between thorax and abdomen. We propose here the erection of a new family, Alvinellidae, which seems to be primitive within the order Terebellida. All known alvinellids are strictly associated with deep hydrothermal vent phenomena.

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2

Tunnicliffe, Verena, Daniel Desbruyères, Didier Jollivet e Lucien Laubier. "Systematic and ecological characteristics of Paralvinella sulfincola Desbruyères and Laubier, a new polychaete (family Alvinellidae) from northeast Pacific hydrothermal vents". Canadian Journal of Zoology 71, n. 2 (1 febbraio 1993): 286–97. http://dx.doi.org/10.1139/z93-041.

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Polychaetes of the family Alvinellidae (Terrebellida) are endemic to hydrothermal vent communities. A new species from the Juan de Fuca and Gorda ridges in the Northeast Pacific is described; aspects of its buccal appendages, segment number, and uncini placement are unique. Because of initial confusion with a sympatric species, Paralvinella palmiformis Desbruyères and Laubier, protein mobilities were examined to differentiate the species electrophoretically with reference to a third alvinellid, Alvinella pompejana. Among the 17 loci scored, fewer than a quarter of the alleles were present in the two Paralvinella species; Paralvinella sulfincola n.sp. has several diagnostic allozymes. This new species inhabits tubes on the sides of active smoker chimneys and migrates upward as the chimney grows. Individuals are recorded within 1 cm of hydrothermal fluids at temperatures in excess of 300 °C; the species appears to have several molecular adaptations to high ambient temperatures. The Alvinellidae form a fascinating group within which to study phylogenetic and selective processes.

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3

Glasby, Christopher J., Patricia A. Hutchings e Kathryn Hall. "Assessment of monophyly and taxon affinities within the polychaete clade Terebelliformia (Terebellida)". Journal of the Marine Biological Association of the United Kingdom 84, n. 5 (ottobre 2004): 961–71. http://dx.doi.org/10.1017/s0025315404010252h.

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A phylogenetic analysis of the polychaete clade Terebelliformia (Terebellida) was undertaken in order to test monophyly of families and subfamilies and to determine their affinities. Parsimony analyses of 41 terebelliform species with outgroup Owenia fusiformis and 46 morphological characters yielded 106–144 most parsimonious trees with length 250, consistency index=0·432, retention index=0·659 and rescaled consistency index=0·285. Monophyly was indicated for Alvinellidae, Ampharetidae, Terebellidae and Trichobranchidae and the terebellid subfamily Polycirrinae. Monophyly of Terebellidae is supported by the presence of a ridge-like tentacular membrane. Monophyly of Polycirrinae is supported by the loss of branchiae, trilobed upper lip, pinnate secondary notochaetae and ventro-lateral pads. Recognition of Polycirrinae renders taxa in the other terebellid subfamilies—Terebellinae and Thelepodinae—paraphyletic. Our results do not support previous classifications that placed Trichobranchidae as a subfamily of Terebellidae; rather it should be considered equal in rank with Alvinellidae, Ampharetidae, Terebellidae and Pectinariidae. The following relationships were obtained: (Trichobranchidae ((Alvinellidae, Ampharetidae) (Pectinariidae, Terebellidae))). This is the first time a Pectinariidae–Terebellidae sister group relationship has been found; it is supported by the synapomorphic presence of ventral glandular shields.

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4

Perez, Maeva, Hao Wang, Bernard Angers e Pei-Yuan Qian. "Complete mitochondrial genome of paralvinella palmiformis (Polychaeta: Alvinellidae)". Mitochondrial DNA Part B 7, n. 5 (4 maggio 2022): 786–88. http://dx.doi.org/10.1080/23802359.2022.2071652.

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5

Rousset, Vincent, Greg W. Rouse, Jean-Pierre Feral, Daniel Desbruyeres e Fredrik Pleijel. "Molecular and morphological evidence of Alvinellidae relationships (Terebelliformia, Polychaeta, Annelida)". Zoologica Scripta 32, n. 2 (marzo 2003): 185–97. http://dx.doi.org/10.1046/j.1463-6409.2003.00110.x.

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6

Colgan, D. J., P. A. Hutchings e S. Brown. "Phylogenetic relationships within the Terebellomorpha". Journal of the Marine Biological Association of the United Kingdom 81, n. 5 (ottobre 2001): 765–73. http://dx.doi.org/10.1017/s002531540100457x.

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Terebellomorpha is a clade of predominantly tube-dwelling polychaetes, some of whose species are very abundant and whose habitats range from shallow to very deep waters. The group contains five families (Terebellidae, Ampharetidae, Pectinariidae, Trichobranchidae and Alvinellidae). This study of their inter-relationships uses DNA sequence data from five gene segments. Including outgroups, sequences were available for 15 species for 15 U2 snRNA, 14 for Histone H3, 23 for the D1 expansion region of 28S rDNA, 15 for the D9-10 region of 28S rDNA and 17 for subunit I of cytochrome oxidase. Outgroups included representatives of the polychaete families Cirratulidae, Sabellidae and Siboglinidae, and the clitellate Lumbricus. These sequences include eight GenBank entries for 28S D1 and one for CO1.Generally, and in all analyses restricted to the data collected in this laboratory, but including all of these, Terebellomorpha is monophyletic. Within Terebellomorpha, the single maximum parsimony tree indicates that Alvinellidae (all data from GenBank) belongs to a clade with Terebellidae and some Trichobranchidae, contradicting morphological expectations. Terebellidae is paraphyletic with respect to Trichobranchus, this being associated with the subfamily Thelepodinae. The second trichobranchid genus Terebellides (for which only 28S D1 data is available from GenBank) is topologically very distinct to Trichobranchus. Additional data are needed to establish the family's monophyly. Also within Terebellidae, subfamily Terebellinae is paraphyletic with respect to Polycirrinae, supporting the suggestion that this subfamily's morphological simplicity is derived.

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7

Stiller, Josefin, Ekin Tilic, Vincent Rousset, Fredrik Pleijel e Greg W. Rouse. "Spaghetti to a Tree: A Robust Phylogeny for Terebelliformia (Annelida) Based on Transcriptomes, Molecular and Morphological Data". Biology 9, n. 4 (6 aprile 2020): 73. http://dx.doi.org/10.3390/biology9040073.

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Terebelliformia—“spaghetti worms” and their allies—are speciose and ubiquitous marine annelids but our understanding of how their morphological and ecological diversity evolved is hampered by an uncertain delineation of lineages and their phylogenetic relationships. Here, we analyzed transcriptomes of 20 terebelliforms and an outgroup to build a robust phylogeny of the main lineages grounded on 12,674 orthologous genes. We then supplemented this backbone phylogeny with a denser sampling of 121 species using five genes and 90 morphological characters to elucidate fine-scale relationships. The monophyly of six major taxa was supported: Pectinariidae, Ampharetinae, Alvinellidae, Trichobranchidae, Terebellidae and Melinninae. The latter, traditionally a subfamily of Ampharetidae, was unexpectedly the sister to Terebellidae, and hence becomes Melinnidae, and Ampharetinae becomes Ampharetidae. We found no support for the recently proposed separation of Telothelepodidae, Polycirridae and Thelepodidae from Terebellidae. Telothelepodidae was nested within Thelepodinae and is accordingly made its junior synonym. Terebellidae contained the subfamily-ranked taxa Terebellinae and Thelepodinae. The placement of the simplified Polycirridae within Terebellinae differed from previous hypotheses, warranting the division of Terebellinae into Lanicini, Procleini, Terebellini and Polycirrini. Ampharetidae (excluding Melinnidae) were well-supported as the sister group to Alvinellidae and we recognize three clades: Ampharetinae, Amaginae and Amphicteinae. Our analysis found several paraphyletic genera and undescribed species. Morphological transformations on the phylogeny supported the hypothesis of an ancestor that possessed both branchiae and chaetae, which is at odds with proposals of a “naked” ancestor. Our study demonstrates how a robust backbone phylogeny can be combined with dense taxon coverage and morphological traits to give insights into the evolutionary history and transformation of traits.

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8

DE MATOS NOGUEIRA, JOÃO MIGUEL, PAT A. HUTCHINGS e MARCELO VERONESI FUKUDA. "Morphology of terebelliform polychaetes (Annelida: Polychaeta: Terebelliformia), with a focus on Terebellidae". Zootaxa 2460, n. 1 (14 maggio 2010): 1. http://dx.doi.org/10.11646/zootaxa.2460.1.1.

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The morphology of terebelliform polychaetes was investigated for a phylogenetic study focused on Terebellidae. For this study, specimens belonging to 147 taxa, preferably type material or specimens from type localities or areas close to them, were examined under stereo, light and scanning electron microscopes. The taxa examined were 1 Pectinariidae, 2 Ampharetidae, 2 Alvinellidae, 8 Trichobranchidae, and 134 Terebellidae, which included 8 Polycirrinae, 15 Thelepodinae, and 111 Terebellinae. A comparison of the morphology, including prostomium, peristomium, anterior segments and lobes, branchiae, glandular venter, nephridial and genital papillae, notopodia and notochaetae, neuropodia and neurochaetae, and posterior end, was made of all the currently recognized families of terebelliform polychaetes, with special emphasis on Terebellidae. A discussion of the characters useful to distinguish between genera is given. This character set will be used in a subsequent phylogenetic study (Nogueira & Hutchings in prep.)A morfologia de poliquetas terebeliformes foi analisada para um estudo filogenético focado em Terebellidae. Para esse estudo, foram examinados espécimes pertencentes a 147 táxons, sob estereomicroscópio, microscópio óptico e microscópio eletrônico de varredura, preferencialmente material tipo ou espécimes das localidades tipo, ou de suas proximidades. Os táxons examinados foram 1 Pectinariidae, 2 Ampharetidae, 2 Alvinellidae, 8 Trichobranchidae e 134 Terebellidae, dos quais 8 Polycirrinae, 15 Thelepodinae e 111 Terebellinae. Para este estudo, foi feita a comparação entre a morfologia das famílias de poliquetas terebeliformes atualmente reconhecidas, com especial ênfase em Terebellidae, em relação ao prostômio, peristômio, segmentos anteriores e lobos, brânquias, superfície glandular ventral, papilas nefridiais e genitais, notopódios e notocerdas, neuropódios e neurocerdas, e extremidade posterior. Uma discussão dos caracteres úteis para distinguir os gêneros é fornecida. Este conjunto de caracteres será utilizado para um estudo filogenético subseqüente (Nogueira & Hutchings em preparação).

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9

Reuscher, Michael, Dieter Fiege e Thomas Wehe. "Terebellomorph polychaetes from hydrothermal vents and cold seeps with the description of two new species of Terebellidae (Annelida: Polychaeta) representing the first records of the family from deep-sea vents". Journal of the Marine Biological Association of the United Kingdom 92, n. 5 (13 giugno 2011): 997–1012. http://dx.doi.org/10.1017/s0025315411000658.

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Terebellomorph polychaetes are reported from hydrothermal vents and cold seeps collected in the Pacific and Atlantic Oceans. Two new species of Terebellidae,Neoamphitrite hydrothermalissp. nov. andStreblosoma kaiasp. nov., are described from hydrothermal vents of the western Pacific. These are the first terebellid species described from hydrothermal vents. New records from hydrothermal vents and cold seeps and new geographical records are presented for nine additional species belonging to Ampharetidae, Alvinellidae, Terebellidae and Trichobranchidae. A synoptic table with diagnostic characters for all species of the genusStreblosomaSars, 1872 is provided. Keys for all terebellomorph species currently known from hydrothermal vents and cold seeps, respectively, are included. Additionally the new combinationNeoamphitrite pachyderma(Hutchings & Glasby, 1988) comb. nov. is proposed.

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10

McHugh, Damhnait. "Unusual Sperm Morphology in a Deep-Sea Hydrothermal-Vent Polychaete, Paralvinella pandorae (Alvinellidae)". Invertebrate Biology 114, n. 2 (1995): 161. http://dx.doi.org/10.2307/3226888.

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11

Garraffoni, André R. S., e Paulo C. Lana. "Phylogenetic relationships within the Terebellidae (Polychaeta:Terebellida) based on morphological characters". Invertebrate Systematics 22, n. 6 (2008): 605. http://dx.doi.org/10.1071/is07006.

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Most of the recognised genera in Terebellidae lack phylogenetic support because their current diagnoses are based on homoplastic or plesiomorphic features. To address this problem, the phylogenetic relationships of terebellid genera were studied using a morphology-based parsimony analysis of 94 species, with members of the Ampharetidae and Alvinellidae as outgroups. The monophyly of the Terebellidae is supported by the presence of a prostomium shaped as a dorsal ridge-like structure, the prostomial buccal tentacles not retractable into the mouth and the ventral glandular areas having distinct pads. The subfamilies Polycirrinae, Terebellinae and Trichobranchinae are monophyletic. Species of Trichobranchinae form a clade within the Terebellidae, which provides further evidence to support its subfamily status. The lack of evidence to support Thelepodinae reinforces previous statements that this group is not monophyletic.

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12

Nogueira, João Miguel de Matos, Kirk Fitzhugh e Pat Hutchings. "The continuing challenge of phylogenetic relationships in Terebelliformia (Annelida : Polychaeta)". Invertebrate Systematics 27, n. 2 (2013): 186. http://dx.doi.org/10.1071/is12062.

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A comprehensive phylogenetic analysis of the Terebellidae and related families was undertaken. Type material of all genera of Terebellinae was examined, together with representatives of nearly all genera of remaining Terebellidae subfamilies, and representatives of the families that have been traditionally regarded as being closely related, comprising the Terebelliformia. In total, 85 species were coded using 118 subjects (‘characters’) and 286 subject–predicate relations (‘states’). The results indicate: (1) the paraphyly of Terebellidae by the placements of Trichobranchidae, Ampharetidae, Alvinellidae and Pectinariidae within that clade; (2) the occurrences of Thelepodinae as separate clades, consistent with groups ‘A’ and ‘B’ recognised by Nogueira et al. (2010a); and (3) the monophyly of Polycirrinae and Terebellinae. The previously considered subfamilies of Terebellidae are raised to familial level and a new family is described. Revised definitions are provided for: Terebelliformia, Polycirridae, stat. nov., Telothelepodidae, fam. nov., Terebellidae emend., and Thelepodidae, stat. nov., along with a discussion of character evolution in the Terebellidae.

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13

Faure, B., P. Chevaldonné, F. Pradillon, E. Thiébaut e D. Jollivet. "Spatial and temporal dynamics of reproduction and settlement in the Pompeii worm Alvinella pompejana (Polychaeta: Alvinellidae)". Marine Ecology Progress Series 348 (25 ottobre 2007): 197–211. http://dx.doi.org/10.3354/meps07021.

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14

Zal, Franck, Brian N. Green, Pascale Martineu, François H. Lallier, André Toulmond, Serge N. Vinogradov e James J. Childress. "Polypeptide chain composition diversity of hexagonal-bilayer haemoglobins within a single family of annelids, the Alvinellidae". European Journal of Biochemistry 267, n. 16 (agosto 2000): 5227–36. http://dx.doi.org/10.1046/j.1432-1327.2000.01594.x.

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15

UYENO, DAISUKE, HIROMI K. WATANABE e MOTOHIRO SHIMANAGA. "A new dirivultid copepod (Siphonostomatoida) from hydrothermal vent fields of the Izu-Bonin Arc in the North Pacific Ocean". Zootaxa 4415, n. 2 (30 aprile 2018): 381. http://dx.doi.org/10.11646/zootaxa.4415.2.8.

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A new species of dirivultid copepod (Siphonostomatoida) is described from hydrothermal vents in a volcanic seamount in Izu-Bonin Arc, western part of North Pacific Ocean. The copepod was collected during the research cruise NT13-09 using the R/V Natsushima with the ROV Hyper-Dolphin in April 2013. The type series of the new species was collected from the populations of Paralvinella spp. (Annelida: Alvinellidae) on an active vent chimney at the depth of 795 m. Stygiopontius senokuchiae n. sp. is most closely related to S. teres Humes, 1996 but clearly distinguished from the latter species by the possession of the following characters: the basis of leg 1 with an attenuated inner process; the genital double somite with a conical process lateral to the genital opening; and caudal rami without distal process. The findings of the copepod in the present study represents the first record of nominal species of the Dirivultidae from Japanese waters and a record of the shallowest depth of the genus. A key to species of the genus Stygiopontius from Western Pacific is provided.

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16

Jollivet, D., D. Desbruyères, C. Ladrat e L. Laubier. "Evidence for differences in the allozyme thermostability of deep-sea hydrothermal vent polychaetes (Alvinellidae):a possible selection by habitat". Marine Ecology Progress Series 123 (1995): 125–36. http://dx.doi.org/10.3354/meps123125.

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17

Pradillon, F., M. Zbinden, LS Mullineaux e F. Gaill. "Colonisation of newly-opened habitat by a pioneer species, Alvinella pompejana (Polychaeta: Alvinellidae), at East Pacific Rise vent sites". Marine Ecology Progress Series 302 (2005): 147–57. http://dx.doi.org/10.3354/meps302147.

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18

Copley, JTP, PA Tyler, CL Van Dover e SJ Philip. "Spatial variation in the reproductive biology of Paralvinella palmiformis (Polychaeta: Alvinellidae) from a vent field on the Juan de Fuca Ridge". Marine Ecology Progress Series 255 (2003): 171–81. http://dx.doi.org/10.3354/meps255171.

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19

Zal, F., D. Jollivet, P. Chevaldonn� e D. Desbruy�res. "Reproductive biology and population structure of the deep-sea hydrothermal vent worm Paralvinella grasslei (Polychaeta: Alvinellidae) at 13�N on the East Pacific Rise". Marine Biology 122, n. 4 (giugno 1995): 637–48. http://dx.doi.org/10.1007/bf00350685.

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20

Knowles, James D., Emily Wenink, Nancy Schult, Verena Tunnicliffe e Damhnait McHugh. "Molecular analysis indicates gene flow among populations of Paralvinella pandoraeDesbruyeres and Laubier 1986 (Alvinellidae, Terebellida), a polychaete annelid endemic to hydrothermal vents of the northeast Pacific". Marine Ecology 26, n. 3-4 (settembre 2005): 216–22. http://dx.doi.org/10.1111/j.1439-0485.2005.00063.x.

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21

Girguis, P. R. "Thermal Preference and Tolerance of Alvinellids". Science 312, n. 5771 (14 aprile 2006): 231. http://dx.doi.org/10.1126/science.1125286.

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22

Matabos, Marjolaine, Nadine Le Bris, Sophie Pendlebury e Eric Thiébaut. "Role of physico-chemical environment on gastropod assemblages at hydrothermal vents on the East Pacific Rise (13°N/EPR)". Journal of the Marine Biological Association of the United Kingdom 88, n. 5 (24 giugno 2008): 995–1008. http://dx.doi.org/10.1017/s002531540800163x.

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Deep-sea hydrothermal vents display extreme and highly variable environmental conditions that are expected to be among the most important factors structuring associated benthic populations and communities. We tested this assumption, focusing on the distribution of gastropods, as well as on the demographic population structure and reproductive biology of one dominant gastropod species in zones characterized by alvinellid polychaetes and vestimentiferan tubeworms. A total of 14 biological samples from both types of habitats were collected at three sites on the East Pacific Rise 13°N vent field in May 2002. At all vents except one, the physico-chemical environment was described in two steps: (1) pH, total sulphide and reduced iron concentrations have been measuredin situinAlvinellahabitats and correlations to temperature were assessed at the scale of each sampled vent; and (2) assuming the consistency of these relationships within a single edifice, ranges of physico-chemical factors were estimated for each biological sample from the corresponding fine scale temperature measurements. A total of 11 gastropod species were identified from all samples and 2 main faunal assemblages were distinguished: one dominated byLepetodrilus elevatusin the alvinellid zone as well as in the vestimentiferan zone, and one dominated by the peltospiridsNodopelta heminoda, N. subnodaandPeltospira operculataconfined to the alvinellid zone. Peltospirid gastropods were dominant over lepetodrilid gastropods in the more acidic, sulphide-richer, and hotter environments. Although this pattern could be related to specific physiological tolerances to temperature and sulphide toxicity, the weak correlation between community structure and physico-chemical variables suggests that additional factors are also involved. Particularly, the low species richness and the overwhelming dominance ofL. elevatusin one faunal assemblage suggest that this species may outcompete peltospirids and greatly affect community structure. This hypothesis is supported by large differences in the demographic structure and reproductive biology ofL. elevatusbetween the 2 faunal assemblages.

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23

Zbinden, Magali, Nadine Le Bris, Philippe Compère, Isabelle Martinez, François Guyot e Françoise Gaill. "Mineralogical gradients associated with alvinellids at deep-sea hydrothermal vents". Deep Sea Research Part I: Oceanographic Research Papers 50, n. 2 (febbraio 2003): 269–80. http://dx.doi.org/10.1016/s0967-0637(02)00161-9.

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24

Martineu, Pascale, S. Kim Juniper, Charles R. Fisher e Gary J. Massoth. "Sulfide Binding in the Body Fluids of Hydrothermal Vent Alvinellid Polychaetes". Physiological Zoology 70, n. 5 (settembre 1997): 578–88. http://dx.doi.org/10.1086/515864.

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25

JUNIPER, S. KIM, e PASCALE MARTINEU. "Alvinellids and Sulfides at Hydrothermal Vents of the Eastern Pacific: A Review". American Zoologist 35, n. 2 (aprile 1995): 174–85. http://dx.doi.org/10.1093/icb/35.2.174.

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26

Chevaldonné, P., e D. Jollivet. "Videoscopic study of deep-sea hydrothermal vent alvinellid polychaete populations: biomass estimation and behaviour". Marine Ecology Progress Series 95 (1993): 251–62. http://dx.doi.org/10.3354/meps095251.

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27

Toulmond, A., F. E. I. Slitine, J. De Frescheville e C. Jouin. "Extracellular Hemoglobins of Hydrothermal Vent Annelids: Structural and Functional Characteristics in Three Alvinellid Species". Biological Bulletin 179, n. 3 (dicembre 1990): 366–73. http://dx.doi.org/10.2307/1542329.

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28

Jouin, Claude, e Françoise Gaill. "Gills of hydrothermal vent annelids: Structure, ultrastructure and functional implications in two alvinellid species". Progress in Oceanography 24, n. 1-4 (gennaio 1990): 59–69. http://dx.doi.org/10.1016/0079-6611(90)90019-x.

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29

Levesque, C., SK Juniper e J. Marcus. "Food resource partitioning and competition among alvinellid polychaetes of Juan de Fuca Ridge hydrothermal vents". Marine Ecology Progress Series 246 (2003): 173–82. http://dx.doi.org/10.3354/meps246173.

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30

Southward, A. J., E. C. Southward, B. Spiro, G. H. Rau e V. Tunnicliffe. "13C/12C of organisms from Juan de Fuca Ridge hydrothermal vents: a guide to carbon and food sources". Journal of the Marine Biological Association of the United Kingdom 74, n. 2 (maggio 1994): 265–78. http://dx.doi.org/10.1017/s002531540003931x.

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Abstract (sommario):

Soft tissue δ13C values were determined in vestimentiferan tube worms, alvinellid polychaetes and molluscs from Axial Seamount and Middle Valley, North-east Pacific. Inorganic carbon in mollusc shells and water samples was also analysed. In the vestimentiferan,Ridgeia piscesae, which lives in symbiosis with sulphur-oxidizing chemolithoautotrophic bacteria, tissue samples from the Axial vents showed δ13C values from −11 to −16‰, whereas at Middle Valley, where venting occurs through sediments, the δ13C ranged from −16 to −26‰. The tissues of an associated polychaete,Paralvinella palmiformis, which feeds on free-living bacteria, had δ13C values in the range −21 to −26‰. The bivalveCalyptogenafrom Middle Valley was more depleted thanRidgeiaandParalvinella, −37‰, closer to the ratios found in chemolithoautotrophic symbioses in non-vent habitats. Considerable, but variable, depletion (−23 to −42‰) was found in small gastropods. Mollusc shells and diluted vent water differed little in δ13C compared to inorganic carbon in ambient deep sea-water.

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31

Jollivet, Didier, Daniel Desbruyères, François Bonhomme e Dario Moraga. "Genetic differentiation of deep-sea hydrothermal vent alvinellid populations (Annelida: Polychaeta) along the East Pacific Rise". Heredity 74, n. 4 (aprile 1995): 376–91. http://dx.doi.org/10.1038/hdy.1995.56.

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32

Jollivet, Didier, Pierre Chevaldonne e Benjamin Planque. "Hydrothermal-Vent Alvinellid Polychaete Dispersal in the Eastern Pacific. 2. A Metapopulation Model Based on Habitat Shifts". Evolution 53, n. 4 (agosto 1999): 1128. http://dx.doi.org/10.2307/2640817.

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33

Jollivet, Didier, Pierre Chevaldonne e Benjamin Planque. "HYDROTHERMAL-VENT ALVINELLID POLYCHAETE DISPERSAL IN THE EASTERN PACIFIC. 2. A METAPOPULATION MODEL BASED ON HABITAT SHIFTS". Evolution 53, n. 4 (agosto 1999): 1128–42. http://dx.doi.org/10.1111/j.1558-5646.1999.tb04527.x.

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34

Pradillon, F., M. Zbinden, N. Le Bris, S. Hourdez, A. S. Barnay e F. Gaill. "Development of assemblages associated with alvinellid colonies on the walls of high-temperature vents at the East Pacific Rise". Deep Sea Research Part II: Topical Studies in Oceanography 56, n. 19-20 (settembre 2009): 1622–31. http://dx.doi.org/10.1016/j.dsr2.2009.05.009.

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35

Tsurumi, Maia, Ramona C. de Graaf e Verena Tunnicliffe. "Distributional and Biological Aspects of Copepods at Hydrothermal Vents on the Juan de Fuca Ridge, north-east Pacific ocean". Journal of the Marine Biological Association of the United Kingdom 83, n. 3 (9 aprile 2003): 469–77. http://dx.doi.org/10.1017/s0025315403007367h.

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Abstract (sommario):

The abundance patterns of copepods on the Juan de Fuca Ridge was examined. One species was studied in detail. Twelve non-parasitic species are recorded from the Juan de Fuca, but only three dirivultid species and some unidentified harpacticoids are abundant in collections. Densities are estimated at 0·5 copepod cm−2 on vestimentiferan tubes to over 8 cm−2 on chimney surfaces. Aphotopontius forcipatus is most abundant at new vents and Benthoxynus spiculifer is most abundant at mature vents. Vents with reduced or undetectable fluid flow have higher diversity of copepod fauna. The life cycle of the siphonostome Stygiopontius quadrispinosus begins with a centrolecithal egg brooded singly or doubly on the female. Hatching and naupliar stages are unknown in benthic samples. The preadult stage (copepodite V) recruits to the vent habitat. Pre-adult males attach to pre-adult females and fertilize at the final copepodite VI moult. As the sex ratio is highly skewed in favour of females, males probably inseminate many females and there may be mate competition in populations where males are rare. Reproduction is probably continuous or semi-continuous. Abundance is greatest on sulphide edifices near the points of hot water egress. This copepod co-occurs with the alvinellid polychaete Paralvinella sulfincola.

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36

Dixon, D. R., M. T. Jolly, W. F. Vevers e L. R. J. Dixon. "Chromosomes of Pacific hydrothermal vent invertebrates: towards a greater understanding of the relationship between chromosome and molecular evolution". Journal of the Marine Biological Association of the United Kingdom 90, n. 1 (19 agosto 2009): 15–31. http://dx.doi.org/10.1017/s0025315409000149.

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Abstract (sommario):

Karyotypes for several East Pacific Rise hydrothermal vent invertebrates are described here for the first time: the vestimentiferansRiftia pachyptilaandOasisia alvinae, the alvinellid polychaetesAlvinella pompejana, A. caudataandParalvinella grasslei, the polynoid polychaetesBranchinotogluma grassleiandBranchipolynoe symmytilida, the serpulidLaminatubus alviniand the mytilid bivalveBathymodiolus thermophilus. For comparative purposes, the karyotype of the Atlantic vent musselBathymodiolus azoricusis also described here for the first time. Each species has its own unique chromosomal characteristics which can be interpreted both in terms of group characteristics and species divergence. From comparisons with published results on other vent species and closely-related coastal species, we identified a positive correlation between chromosome number variation and molecular divergence at two ribosomal ribonucleic acid gene loci (the 18S and 28S rRNA). Whilst the patterns of chromosome divergence we found were generally within the ranges previously reported for these taxonomic groupings, there was an apparent inconsistency in the case ofBranchipolynoe symmytilida(EPR) andBranchipolynoe seepensis(MAR), which show a greater degree of divergence at the chromosome level compared with other members of the same genus. Moreover, polychaetes as a whole showed greater variation in the number and structural divergence of chromosomes compared to Mytilids (structural information only). Our findings highlight the great potential for chromosome analysis in future taxonomic and evolutionary studies of the deep-sea vent fauna.

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Bonch-Osmolovskaya, Elizaveta A., Anna A. Perevalova, Tatiana V. Kolganova, Igor I. Rusanov, Christian Jeanthon e Nikolay V. Pimenov. "Activity and Distribution of Thermophilic Prokaryotes in Hydrothermal Fluid, Sulfidic Structures, and Sheaths of Alvinellids (East Pacific Rise, 13°N)". Applied and Environmental Microbiology 77, n. 8 (11 febbraio 2011): 2803–6. http://dx.doi.org/10.1128/aem.02266-10.

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Abstract (sommario):

ABSTRACTProcesses of inorganic carbon assimilation, methanogenesis, sulfate reduction, and acetate oxidation to CO2occurring in samples from the East Pacific Rise at 13°N were traced, using radioisotopically labeled substrates, at temperatures ranging from 65 to 100°C. Molecular hydrogen stimulated lithotrophic methanogenesis and sulfate reduction but inhibited inorganic carbon assimilation. Active mineralization of acetate was observed in an organic-richAlvinella-associated system at 80°C. Members of theThermococcaleswere the most numerous hyperthermophilic archaea in these samples, their density achieving 108cells per cm3, while the numbers of cultured hydrogen-utilizing thermophilic lithotrophs were several orders of magnitude lower.

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Chevaldonne, Pierre, Didier Jollivet, Annick Vangriesheim e Daniel Desbruyères. "Hydrothermal-vent alvinellid polychaete dispersal in the eastern Pacific. 1. Influence of vent site distribution, bottom currents, and biological patterns". Limnology and Oceanography 42, n. 1 (gennaio 1997): 67–80. http://dx.doi.org/10.4319/lo.1997.42.1.0067.

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39

Galkin, S. V., e E. I. Goroslavskaya. "Bottom fauna associated with mussel beds and alvinellid communities in the hydrothermal field at 9° N of the East Pacific Rise". Oceanology 48, n. 4 (agosto 2008): 509–16. http://dx.doi.org/10.1134/s0001437008040061.

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40

Han, Yuru, Dongsheng Zhang, Chunsheng Wang e Yadong Zhou. "Out of the Pacific: A New Alvinellid Worm (Annelida: Terebellida) From the Northern Indian Ocean Hydrothermal Vents". Frontiers in Marine Science 8 (26 maggio 2021). http://dx.doi.org/10.3389/fmars.2021.669918.

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Abstract (sommario):

Alvinellids have long been considered to be endemic to Pacific vents until recent discovery of their presence in the Indian Ocean. Here, a new alvinellid is characterized and formally named from recently discovered vents, Wocan, and Daxi, in the northern Indian Ocean. Both morphological and molecular evidences support its placement in the genus Paralvinella, representing the first characterized alvinellid species out of the Pacific. The new species, formally described as Paralvinella mira n. sp. herein, is morphologically most similar to Paralvinella hessleri from the northwest Pacific, but the two species differ in three aspects: (1), the first three chaetigers are not fused in P. mira n. sp., whereas fused in P. hessleri; (2), paired buccal tentacles short and pointed in P. mira but large and strongly pointed in P. hessleri; (3), numerous slender oral tentacles ungrouped in P. mira but two groups in P. hessleri. Phylogenetic inference using the concatenated alignments of the cytochrome c oxidase I (COI), 16S rRNA and 18S rRNA genes strongly supports the clustering of P. mira with two West Pacific congeners, P. hessleri and an undescribed species (Paralvinella sp. ZMBN). The resulting Indian/West Pacific lineage suggests a possible invasion into the Indian Ocean from the West Pacific. This is the third polychaete reported from Wocan hydrothermal field. Among the three species, two including P. mira and Hesiolyra heteropoda (Annelida:Hesionidae) are present in high abundance, forming an alvinellids/hesionids-dominated polychaete assemblage distinct from that at all other Central Indian Ridge and Southwest Indian Ridge vents. Thus, this study expands our understanding of alvinellid biogeography beyond the Pacific, and adds to the unique biodiversity of the northern Indian Ocean vents, with implications for biogeographic subdivision across the Indian Ocean ridges.

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Fontanillas, Eric, Oxana V. Galzitskaya, Odile Lecompte, Mikhail Y. Lobanov, Arnaud Tanguy, Jean Mary, Peter R. Girguis, Stéphane Hourdez e Didier Jollivet. "Proteome evolution of deep-sea hydrothermal vent alvinellid polychaetes supports the ancestry of thermophily and subsequent adaptation to cold in some lineages". Genome Biology and Evolution, 12 gennaio 2017, evw298. http://dx.doi.org/10.1093/gbe/evw298.

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