scholarly journals New species of bone-eating worm Osedax from the abyssal South Atlantic Ocean (Annelida, Siboglinidae)

ZooKeys ◽  
2019 ◽  
Vol 814 ◽  
pp. 53-69 ◽  
Author(s):  
Yoshihiro Fujiwara ◽  
Naoto Jimi ◽  
Paulo Y.G. Sumida ◽  
Masaru Kawato ◽  
Hiroshi Kitazato
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Brazilian Coast ◽  
The South ◽  
Trunk Length ◽  
Molecular Phylogenetic ◽  
A New Species

A new species of bone-eating annelid, Osedaxbraziliensissp. n., found in a sunken whale carcass at a depth of 4,204 m at the base of the São Paulo Ridge in the South Atlantic Ocean off the Brazilian coast is described. The organism was retrieved using the human-occupied vehicle Shinkai 6500 during the QUELLE 2013 expedition. This is the 26th species of the genus and the first discovery from the South Atlantic Ocean, representing the deepest record of Osedax worldwide to date. This species morphologically resembles Osedaxfrankpressi but is distinguished by the presence of a yellow bump or patch behind the prostomium and its trunk length. Molecular phylogenetic analysis using three genetic markers (COI, 16S, and 18S) showed that O.braziliensissp. n. is distinct from all other Osedax worms reported and is a sister species of O.frankpressi.

scholarly journals Ligophorus uruguayense sp. nov. (Monogenea, Ancyrocephalidae), a gill parasite from Mugil platanus (Mugiliformes, Mugilidae) in Uruguay

2009 ◽  
Vol 54 (2) ◽  
Author(s):  
Gabriela Siquier ◽  
Margarita Núñez
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Geographical Distribution ◽  
Host Species ◽  
Accessory Piece ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
The South ◽  
Gill Parasite ◽  
A New Species

AbstractThe present study describes a new species, Ligophorus uruguayense, parasitizing the gills of Mugil platanus Günther, 1880 from the coast of Uruguay. It differs from all other species of the genus mainly in the shape of the ventral bar, the thick process at the distal end of the inner root of ventral anchors, the J-shaped penis accessory piece and the vaginal tube showing transverse annulations at its distal end, the host species, and geographical distribution. This is the first description of a species of Ligophorus from a mullet in the South Atlantic Ocean.

New species of Neotanais Beddard, 1886 (Crustacea, Tanaidacea) from the deep sea of the tropical and southern East Atlantic Ocean

Zootaxa ◽  
2009 ◽  
Vol 1992 (1) ◽  
pp. 20-36 ◽  
Author(s):  
SIMON WEIGMANN ◽  
JÜRGEN GUERRERO-KOMMRITZ
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Deep Sea ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Full Description ◽  
The South ◽  
East Atlantic ◽  
Cape Basin

As part of the sampling efforts during the DIVA-II expedition several Tanaidacea of the genus Neotanais were captured in the Guinea and the Cape Basin in the tropical and southern East Atlantic Ocean. Two different species were sampled, Neotanais rotermundiae sp. n. from the Guinea and Neotanais guskei sp. n. from the Cape Basin. The distribution of both species is limited to these basins. A full description for both species is presented. Neotanais guskei sp. n. is the largest Neotanais reported for the South Atlantic Ocean.

scholarly journals Cyperus stroudii (CYPERACEAE), a new species from Ascension Island, South Atlantic Ocean

Phytotaxa ◽  
2017 ◽  
Vol 331 (1) ◽  
pp. 65 ◽  
Author(s):  
ALAN GRAY ◽  
GAIL STOTT
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Environmental Conditions ◽  
Morphological Characteristics ◽  
Common Garden ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Herbarium Specimens ◽  
Ascension Island ◽  
A New Species

Material from the Cyperus appendiculatus group was collected from Ascension Island and compared using a common garden study and to herbarium specimens from throughout the geographical range. Cyperus stroudii is described as a new species, known only from Ascension Island in the South Atlantic Ocean, it closest relative is C. appendiculatus also native to Ascension Island and Brazil. Cyperus stroudii differs from C. appendiculatus in its dwarf habit and other morphological characteristics, and these characteristics are retained under common environmental conditions indicative of genomic differences.

scholarly journals First record of Flabellina dana Millen and Hamann, 2006 (Mollusca: Nudibranchia) in the South Atlantic Ocean

Check List ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 880 ◽  
Author(s):  
Licia Sales ◽  
Marlon Delgado ◽  
Vinicius Queiroz ◽  
Vinicius Padula ◽  
Cláudio L. S. Sampaio ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Geographic Distribution ◽  
Caribbean Sea ◽  
First Record ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Brazilian Coast ◽  
The South ◽  
The Bahamas ◽  
The Caribbean

The nudibranch Flabellina dana Millen and Hamann, 2006 is reported from two localities in the northeastern Brazilian coast. These are the first records of this species, previously recorded from localities in the Bahamas and the Caribbean Sea, in South Atlantic Ocean, extending its known geographic distribution more than 3500 km southward.

scholarly journals Ages of the Magmatism and the Opening of the South Atlantic Ocean

1998 ◽  
Vol 25 (2) ◽  
pp. 47 ◽  
Author(s):  
ANA MARIA PIMENTEL MIZUSAKI ◽  
ANTONIO THOMAZ FILHO ◽  
PEDRO DE CESERO
Keyword(s):  
Atlantic Ocean ◽  
Process Development ◽  
Volcanic Rocks ◽  
River Mouth ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Geochemical Data ◽  
Brazilian Coast ◽  
The South ◽  
Break Up

The analysis of published and unpublished 368 K/Ar radiometric ages of basic, intermediate and alkaline volcanic rocks, related to the post-Paleozoic magmatism linked to the opening of the South Atlantic Ocean, yields some important evidence concerning the break up of the Gondwana supercontinent. At the Brazilian Equatorial margin, the Gondwana break up started in the Permo-Triassic, when the opening of the Equatorial South Atlantic Ocean began and spread out south-eastward up to the present day Amazon River mouth. During the middle Jurassic/lower Cretaceous (pre-Aptian), the continuity of this separation, towards the Potiguar Basin, was coeval with the northward opening of the south-east Brazilian margin, up to the Espírito Santo State latitude. The relationship between large volcanic events in the basins and the resistance to the rifting process development offered by the cratonic area was shown by the trend of the magmatic age. Along the equatorial margin, the fragmentation resistance caused by the São Luis / West African craton is manifested by a large basic magmatism described in the Tacutu, Acre, Solimões, Amazonas and Parnaíba basins. A similar mechanism along the south-east margin, is proposed for the magmatism described in the Paraná Basin which is associated with the fracturing resistance offered by the São Francisco/Congo cratonic area. The integration of geochronological, micropalentological, sedimentological and geochemical data from the basins of the east Brazilian continental margin supports a model to explain the final disruption between South America and Africa during Cenonian/Turonian time. This model implies that 90 Ma basic magmatic rocks, related to the oceanic crust formation, probably occur offshore from the present-day eastern Brazilian coast line.

A new species of Pachycheles (Crustacea: Anomura: Porcellanidae), with taxonomic remarks on two other porcelain crabs from the remote oceanic archipelago of Trindade and Martin Vaz, South Atlantic Ocean

Zootaxa ◽  
2017 ◽  
Vol 4299 (4) ◽  
pp. 546 ◽  
Author(s):  
LUCIANE AUGUSTO DE AZEVEDO FERREIRA ◽  
MARCOS TAVARES
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
Abdominal Segment ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Western Atlantic ◽  
Porcelain Crabs ◽  
Inner Continental Shelf ◽  
A New Species

Three species in two genera of porcelain crabs are reported from the remote oceanic archipelago of Trindade and Martin Vaz one of which, Pachycheles meloi, new to science. The new species is morphologically similar to Pachycheles riisei (Stimpson, 1858) from the inner continental shelf between Florida (USA) and São Paulo (Brazil), of which Pachycheles meloi sp. nov. differs by a suite of carapace and appendage characters, including the presence of a pair of male gonopods on the second abdominal segment (absent in P. riisei). The new species is additionally compared to other congeners. Opportunity is taken to elaborate on the taxonomy of Petrolisthes amoenus (Guérin-Méneville, 1855) and Petrolisthes marginatus (Stimpson, 1859). The Trindade and Martin Vaz Archipelago contain a strongly depauperate porcellanid fauna of western Atlantic affinities. 

Two new species of cheilostome bryozoans from the South Atlantic Ocean 

Zootaxa ◽  
2014 ◽  
Vol 3753 (3) ◽  
pp. 283 ◽  
Author(s):  
ANA CAROLINA S. ALMEIDA ◽  
FACELUCIA B. C. SOUZA
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
The South ◽  
Two New Species ◽  
Cheilostome Bryozoans

scholarly journals Bryophytes of St. Helena, South Atlantic Ocean. 7. Cylindrocolea (Jungermanniales, Cephaloziellaceae): C. Sanctae-Helenae M. Wigginton Sp. Nov.

2013 ◽  
Vol 58 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Martin J. Wigginton
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
First Report ◽  
The Family ◽  
St Helena ◽  
A New Species

Abstract A new species of Cylindrocolea R. M. Schust. from St. Helena, C. sanctae-helenae M. Wigginton, sp. nov. is described and illustrated. This is the first report of the family Cephaloziellaceae from the island.

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