Podosiridae, a new family of North Atlantic deep sea amphipod (Crustacea, Amphipoda)

Zootaxa ◽  
2012 ◽  
Vol 3546 (1) ◽  
pp. 81 ◽  
Author(s):  
J. K. LOWRY ◽  
A. A MYERS
Keyword(s):  
Sexual Dimorphism ◽  
North Atlantic ◽  
Deep Sea ◽  
Ovigerous Female ◽  
Original Description ◽  
Junction Zone ◽  
New Family ◽  
The Family ◽  
Azores Triple Junction ◽  
Mid Atlantic Ridge

Bellan-Santini (2007) described Podosirus vaderi from a vent community on the Mid-Atlantic Ridge in the Azores Triple junction zone. At the time she placed it in the family Eusiridae and pointed out similarities to the Podoceridae.The original description of Podosirus vaderi was based on an ovigerous female. Male characteristics are not known, but based on established trends among similar amphipods without apical robust setae on uropods 1 and 2, it is presumed that there is minimal sexual dimorphism. Because the female has the first gnathopod smaller than the second and a well developed male-like second gnathopod, it is probable that the male will have similar gnathopods. Whether calceoli occur in the male is also not known.

scholarly journals A new family for a deep-sea caridean shrimp from North Atlantic hydrothermal vents

1997 ◽  
Vol 77 (2) ◽  
pp. 425-438 ◽  
Author(s):  
A.L. Vereshchaka
Keyword(s):  
North Atlantic ◽  
Deep Sea ◽  
Hydrothermal Vents ◽  
New Genus ◽  
The Other ◽  
Taxonomic Position ◽  
Caridean Shrimp ◽  
New Family ◽  
The Family ◽  
Mid Atlantic Ridge

Mirocaris keldyshi gen. nov., sp. nov. is described from the Mid-Atlantic Ridge, TAG Location (26°09′N 44°50′W). The family Mirocarididae is proposed to include the new genus. The taxonomic position and distinguishing characters (presence of hook-bearing thoracic epipods and rudimentary appendix interna on pleopods 2–4) of the new family as compared to the other families of the superfamily Bresilioidea (Bresiliidae, Disciadidae, and Alvinocarididae) are discussed, and revised diagnoses for these families are provided.

scholarly journals Demosponges from the Northern Mid-Atlantic Ridge shed more light on the diversity and biogeography of North Atlantic deep-sea sponges

2015 ◽  
Vol 95 (7) ◽  
pp. 1475-1516 ◽  
Author(s):  
Paco Cárdenas ◽  
Hans Tore Rapp
Keyword(s):  
North Atlantic ◽  
Fracture Zone ◽  
Deep Sea ◽  
The North ◽  
Mid Atlantic Ridge ◽  
The North Atlantic

In July–August 2004, the Mid-Atlantic Ridge Ecosystems (MAR-Eco) expedition collected Demospongiae (Porifera) from the Northern Mid-Atlantic Ridge (MAR) north of the Azores, between 41°N and 61°N. Demosponges were found at 10 stations, at depths ranging from 753 to 3046 m. Twenty-two species were identified: 17 Tetractinellida, one Polymastiida, one Suberitida, two Poecilosclerida and one Dendroceratida. The study of this material is an opportunity to revise the taxonomy and the North Atlantic distribution of each of these deep-sea species. Some species are particularly rare and poorly known (Tetilla longipilis, Tetilla sandalina, Craniella azorica, Polymastia corticata) and two are new to science:Forcepia(Forcepia)toxaferasp. nov. andIotroata paravaridenssp. nov. This study suggests that the MAR is not a longitudinal barrier for the dispersal of deep-sea demosponges while on the contrary, the Charlie-Gibbs Fracture Zone (CGFZ) may be a latitudinal border for the dispersal of deep-sea demosponges, due to great depths and currents.

scholarly journals A new genus and five new species of the subfamily Florarctinae (Tardigrada, Arthrotardigrada)

2021 ◽  
Vol 762 ◽  
Author(s):  
Jesper G. Hansen ◽  
Reinhardt M. Kristensen
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Atlantic ◽  
Deep Sea ◽  
Type Species ◽  
New Genus ◽  
North Atlantic Ocean ◽  
Original Description ◽  
Additional Information ◽  
South Pacific Ocean

A new genus Higginsarctus gen. nov. in the subfamily Florarctinae Renaud-Mornant, 1982 (Arthrotardigrada) is established on the basis of the type species H. signeae gen. et sp. nov. described from carbonated sand habitats from Faroe Bank, North Atlantic Ocean. Three other Atlantic species H. laurae gen. et sp. nov., H. martini gen. et sp. nov. and H. shintai gen. et sp. nov. are described from Dentalium sand, Roscoff, France and finally H. lassei gen. et sp. nov. is described from the deep sea in the South Pacific Ocean off the coast of Chile. The recently described species Ligiarctus alatus Gomes-Júnior, E. Santos, da Rocha, P.J.P. Santos & Fontoura, 2018 is investigated and compared with the type species Ligiarctus eastwardi Renaud-Mornant, 1982. New and additional information to the original description of L. alatus is provided and this species is moved to Higginsarctus gen. nov. as H. alatus comb. nov.

Copepods of the family Dirivultidae (Siphonostomatoida) from deep-sea hydrothermal vent fields on the Mid-Atlantic Ridge at 14ºN and 5ºS

Zootaxa ◽  
2006 ◽  
Vol 1277 (1) ◽  
pp. 1 ◽  
Author(s):  
VIATCHESLAV N. IVANENKO ◽  
PEDRO MARTÍNEZ ARBIZU ◽  
JENS STECHER
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
First Record ◽  
Remotely Operated Vehicle ◽  
The Pacific ◽  
The Family ◽  
Mid Atlantic Ridge ◽  
The Pacific Ocean ◽  
Menez Gwen ◽  
Back Arc

Five species of three genera of Dirivultidae Humes and Dojiri, 1980 were found at deep-sea hydrothermal vent fields on the Mid-Atlantic Ridge, at the Logachev-1 field at 14ºN and at two new sites (Turtle Pits and Red Lion) explored at 5ºS. The copepods were collected with a Remotely Operated Vehicle (ROV Quest 4000) and Video Controlled Grab, operated from the R/V Meteor during two cruises (M60/3 and M64/1) conducted in 2004 and 2005 at depths 2992–3048 m. The male of Stygiopontius lomonosovi n. sp. from the Logachev field shares a medioventrally prolonged syncoxa of the maxilliped with S. mirus Humes, 1996 and S. latulus Humes, 1996 from the Snake Pit at 23ºN of the Mid-Atlantic Ridge, but differs from them in having two, instead of three, outer spines on the distal exopodal segment of leg 4. Aphotopontius atlanteus Humes, 1996 previously known from the Lucky Strike and the Menez Gwen sites at 37°N and Rimipontius mediospinifer Humes, 1996 known from three sites (Logachev, Snake Pit, and Broken Spur at 29°N) are recorded from the Logachev field. Stygiopontius pectinatus Humes, 1987 previously recorded from the Mid-Atlantic Ridge hydrothermal vent fields TAG (26°N), Snake Pit, Broken Spur (29°N), and from the Mariana Back-Arc Basin of the Pacific Ocean and Stygiopontius cladarus Humes, 1996 previously known only from Snake Pit and Broken Spur, were found associated with alvinocaridid shrimps (Rimicaris sp.) from the hydrothermal vent field at 5ºS. The discovery of dirivultids at 5ºS represents the first record of copepods from a deep-sea hydrothermal vent southward of the Logachev field in the Atlantic Ocean.

scholarly journals Diversity and Hydrocarbon-Degrading Potential of Deep-Sea Microbial Community from the Mid-Atlantic Ridge, South of the Azores (North Atlantic Ocean)

2021 ◽  
Vol 9 (11) ◽  
pp. 2389
Author(s):  
Maria Paola Tomasino ◽  
Mariana Aparício ◽  
Inês Ribeiro ◽  
Filipa Santos ◽  
Miguel Caetano ◽  
...  
Keyword(s):  
Microbial Community ◽  
Atlantic Ocean ◽  
Oil Spill ◽  
North Atlantic ◽  
Natural Attenuation ◽  
Deep Sea ◽  
North Atlantic Ocean ◽  
Deep Ocean ◽  
Natural Seawater ◽  
Mid Atlantic Ridge

Deep-sea sediments (DSS) are one of the largest biotopes on Earth and host a surprisingly diverse microbial community. The harsh conditions of this cold environment lower the rate of natural attenuation, allowing the petroleum pollutants to persist for a long time in deep marine sediments raising problematic environmental concerns. The present work aims to contribute to the study of DSS microbial resources as biotechnological tools for bioremediation of petroleum hydrocarbon polluted environments. Four deep-sea sediment samples were collected in the Mid-Atlantic Ridge, south of the Azores (North Atlantic Ocean). Their autochthonous microbial diversity was investigated by 16S rRNA metabarcoding analysis. In addition, a total of 26 deep-sea bacteria strains with the ability to utilize crude oil as their sole carbon and energy source were isolated from the DSS samples. Eight of them were selected for a novel hydrocarbonoclastic-bacterial consortium and their potential to degrade petroleum hydrocarbons was tested in a bioremediation experiment. Bioaugmentation treatments (with inoculum pre-grown either in sodium acetate or petroleum) showed an increase in degradation of the hydrocarbons comparatively to natural attenuation. Our results provide new insights into deep-ocean oil spill bioremediation by applying DSS hydrocarbon-degrading consortium in lab-scale microcosm to simulate an oil spill in natural seawater.

A new family and two new genera of calcaxonian octocoral, including a redescription of Pleurogorgia militaris (Cnidaria:Octocorallia:Chrysogorgiidae) and its placement in a new genus

2021 ◽  
Author(s):  
Stephen D. Cairns ◽  
Ralf T. S. Cordeiro ◽  
Yu Xu ◽  
Zifeng Zhan ◽  
Philip Alderslade
Keyword(s):  
Deep Sea ◽  
Type Species ◽  
New Genus ◽  
Sensu Stricto ◽  
Type Material ◽  
New Genera ◽  
New Family ◽  
Phylogenetic Reconstructions ◽  
The Family ◽  
Molecular Phylogenetic

Golden corals (chrysogorgiids sensu lato) are conspicuous components in deep-sea gorgonian assemblages. Although common, their taxonomy still conflicts with evolutionary histories, mostly due to low character availability and poor taxonomic knowledge. This is the case for the genus Pleurogorgia, which has been frequently reported in ROV surveys, dominating hard-bottoms throughout the Indo-Pacific. Herein, molecular phylogenetic reconstructions based on mitochondrial and nuclear datasets, and examination of new and old type material led us to suggest new systematic arrangements for some of the genera. We create a new genus, Ramuligorgia, to accommodate Pleurogorgia militaris, redescribing it as Ramuligorgia militaris comb. nov. within the family Chrysogorgiidae sensu stricto. Additionally, we describe Aurogorgia tasmaniensis gen. nov. et sp. nov., including it and the type species, Pleurogorgia plana, within Pleurogorgiidae fam. nov.

A new genus and species of caridean shrimp (Crustacea: Decapoda: Alvinocarididae) from North Atlantic hydrothermal vents

1996 ◽  
Vol 76 (4) ◽  
pp. 951-961 ◽  
Author(s):  
A. L. Vereshchaka
Keyword(s):  
North Atlantic ◽  
Hydrothermal Vents ◽  
New Genus ◽  
Taxonomic Position ◽  
New Genus And Species ◽  
Caridean Shrimp ◽  
The Family ◽  
Mid Atlantic Ridge

Iorania concordia gen. nov., sp. nov. (Crustacea: Decapoda) belonging to the family Alvinocarididae is described from the Mid Atlantic Ridge, TAG location (26°09'N 44°50'W). The taxonomic position in the family and distinguishing characters (rostrum, armature of telson, form of first maxilliped) of the new genus are presented, and a possible evolutionary feeding hierarchy within the family is suggested. A key is given to the genera of the Alvinocarididae.

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