scholarly journals Towards a review of the decapod crustacea from the remote oceanic archipelago of Trindade and Martin Vaz, south Atlantic Ocean: new records and notes on ecology and zoogeography

2017 ◽  
Vol 57 (14) ◽  
pp. 157 ◽  
Author(s):  
Marcos Domingos Siqueira Tavares ◽  
Leina Carvalho ◽  
Joel Braga de Mendonça Jr.
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Benthic Fauna ◽  
Benthic Invertebrate ◽  
Taxonomic Composition ◽  
Marine Fauna ◽  
Western Atlantic ◽  
Comprehensive Knowledge ◽  
Insular Endemic ◽  
Central Atlantic

The remoteness of the Trindade and Martin Vaz young volcanic archipelago (TMV) raises questions about the source of its marine benthic fauna and levels of endemism. Addressing these questions requires a comprehensive knowledge of the taxonomic composition of the marine fauna of the islands. A five-year survey in the shallow marine waters (up to 30 m) and a literature review on the data published for TMV have been conducted to document the biodiversity of the benthic fauna. Here we report on ten new records of decapod crustaceans from TMV: Gnathophyllum americanum and Thor amboinensis are circumtropical in distribution, whereas Stenopus hispidus, Gnathophylloides mineri and Parribacus antarcticus are disjunct circumtropical species as their distribution in the Atlantic Ocean is limited eastwardly to TMV or Ascension Island (S. hispidus), therefore, do not extending into the eastern Atlantic. Gnathophyllum circellum and Thor manningi are western Atlantic species, with G. circellum previously known only from the Caribbean Sea. Pontonia manningi, Tuleariocaris neglecta and Enoplometopus antillensis are amphi-Atlantic in distribution. Two of the above species are recorded from the southwestern Atlantic for the first time: Gnathophyllum circellum and Tuleariocaris neglecta. These new records corroborate that the marine benthic invertebrate fauna of the TMV archipelago is actually a mosaic of amphi-Atlantic, eastern Atlantic, central Atlantic (insular), endemic and circumtropical species, with a strong western Atlantic component.

New records of octocorals (Cnidaria, Anthozoa) from the south western Atlantic Ocean, with zoogeographic considerations

Zootaxa ◽  
2004 ◽  
Vol 630 (1) ◽  
pp. 1 ◽  
Author(s):  
CARLOS D. PÉREZ ◽  
MAURICIO O. ZAMPONI
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
American Continent ◽  
The South ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
East Pacific ◽  
South West ◽  
First Case ◽  
Present Distribution

The present study deals with six new records of octocoral species (two alcyoniid soft corals and four primnoid gorgonians) for the south western Atlantic Ocean. These new records, mainly for the gorgonians, improves the knowledge of their present distribution. The species Thouarella koellikeri and Dasystenella acanthina have their known distribution widened, showing in the first case a continuous bioceanic distribution (south east Pacific south west Atlantic). The species of the genus Primnoella, P. biserialis and P. compressa, widen their distributional range tending to a geographical continuity along the south eastern coasts of the American continent, avoiding the zoogeographic barrier constituted by the R o de la Plata.

New records and range extension of the Portuguese dogfish Centroscymnus coelolepis in the south‐western Atlantic Ocean, with comments on its morphology

2020 ◽  
Vol 96 (3) ◽  
pp. 601-616
Author(s):  
Federico Mas ◽  
Rodrigo Forselledo ◽  
Andrés Domingo ◽  
Oscar Pin ◽  
Pablo Troncoso ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Range Extension ◽  
The South ◽  
Western Atlantic ◽  
Western Atlantic Ocean

Coastal Fishes of São Tomé and Príncipe islands, Gulf of Guinea (Eastern Atlantic Ocean)—an update

Zootaxa ◽  
2007 ◽  
Vol 1523 (1) ◽  
pp. 1-48 ◽  
Author(s):  
PETER WIRTZ ◽  
CARLOS EDUARDO L. FERREIRA ◽  
SERGIO R. FLOETER ◽  
RONALD FRICKE ◽  
JOÃO LUIZ GASPARINI ◽  
...  
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
New Genus ◽  
New Records ◽  
Western Indian Ocean ◽  
Gulf Of Guinea ◽  
Western Atlantic ◽  
Gobiid Fish ◽  
Sao Tome And Principe ◽  
Eastern Atlantic Ocean

Here we report 59 new records of shore fishes for São Tomé and Príncipe islands (Gulf of Guinea), Eastern Atlantic Ocean. Ten of these are new species still to be described, including a new genus of a gobiid fish that lives in association with an axiid shrimp. A large proportion of the shore fishes of São Tomé and Principe occur on both sides of the Atlantic and many have their sister-species in the western Atlantic. To a lesser degree, there are also affinities to the western Indian Ocean.

scholarly journals Mucilaginous species of Thalassiosira Cleve emend: hasle (Diatomeae) in South Brazilian waters

2011 ◽  
Vol 25 (1) ◽  
pp. 31-42 ◽  
Author(s):  
Luciano Felício Fernandes ◽  
Edinara Katiussia Frassão-Santos
Keyword(s):  
Electron Microscope ◽  
Atlantic Ocean ◽  
Current Literature ◽  
New Records ◽  
Morphological Variability ◽  
Western Atlantic ◽  
Diatom Genus ◽  
Electron Microscopes ◽  
Large Diatom ◽  
Marginal Region

Thalassiosira is a large diatom genus intensively studied since the 1970s, being well represented in diverse marine environments worldwide. Despite the long Brazilian coastline, about 8,500km, few taxonomic works have been performed to investigate the morphology of Thalassiosira species using electron microscope techniques. In this paper the mucilaginous species Thalassiosira diporocyclus, T. mala and T. minuscula were examined in light and electron microscopes, based on material gathered from South Brazilian waters, to record their frustule morphological variability. Some unrecorded findings related to the cribra structure and the cingulum bands are shown. T. mala has central areolae bearing fewer cribral pores than those located in the marginal region. In addition, the valve metrics of T. diporocyclus and T. minuscula are extended in relation to that reported in the current literature. The two species are new records for Brazilian waters, and T. diporocyclus is a new one in the Western Atlantic Ocean.

Review of Aderidae Csiki, 1909 (Insecta: Coleoptera) of Cabo Verde

Zootaxa ◽  
2021 ◽  
Vol 4963 (2) ◽  
pp. 365-374
Author(s):  
DMITRY TELNOV ◽  
NICOLAS GOMPEL
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Cape Verde ◽  
Identification Key ◽  
Additional Material ◽  
Leaf Beetles ◽  
Cabo Verde ◽  
Central Atlantic

The Aderidae (Coleoptera: Tenebrionoidea) of Cabo Verde (or Cape Verde in English transcription) Archipelago in the Central Atlantic Ocean is revised based on an examination of types and additional material. Four species are confirmed for the archipelago, three of the genus Cobososia Collado et Alonso-Zarazaga, 1996 and one of the genus Aderus Stephens, 1829. We also propose to transfer Anthicus reductus Wollaston, 1867 (Anthicidae: Anthicinae: Anthicini) to the genus Cobososia (Aderidae), as Cobososia reducta (Wollaston, 1867) comb. nov. and demonstrate, that Cobososia angulithorax (Desbrochers des Loges, 1881) is conspecific with Cobososia reducta (Wollaston, 1867) syn. nov. Finally, we present new records and an illustrated identification key to the ant-like leaf beetles of Cabo Verde.

Two new species and new records in the alpheid shrimp genera Salmoneus Holthuis, 1955 and Deioneus Dworschak, Anker & Abed-Navandi, 2000 in the Atlantic Ocean (Malacostraca: Decapoda)

Zootaxa ◽  
2020 ◽  
Vol 4786 (3) ◽  
pp. 345-368 ◽  
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
New Records ◽  
Original Description ◽  
Caribbean Coast ◽  
Western Atlantic ◽  
Morphological Heterogeneity ◽  
The Caribbean ◽  
First Time ◽  
Alpheid Shrimp

The present study deals with two species new to science, as well as several new records in the closely related alpheid shrimp genera Salmoneus Holthuis, 1955 and Deioneus Dworschak, Anker & Abed-Navandi, 2000, based on material collected at various localities in the tropical western and eastern Atlantic Ocean. In the western Atlantic, Salmoneus inconspicuus sp. nov. is described based on material from the Caribbean coast of Panama, Cuba, French Antilles and (with some doubts) Bermuda. The new species has been previously reported from the eastern Caribbean Sea as S. teres Manning & Chace, 1990, a closely related species so far known only from Ascension Island in the central Atlantic. Salmoneus camaroncito Anker, 2010 is reported from the Caribbean coast of Mexico, for the first time since its original description. Salmoneus carvachoi Anker, 2007 is reported from Colombia and southeastern USA, representing a new record of the species for each of these countries. Salmoneus depressus Anker, 2011 and Salmoneus setosus Manning & Chace, 1990 are reported for the first time from Cuba and Panama, respectively. In addition, these two species, as well as Salmoneus wehrtmanni Anker, 2010, are reported from new localities in Mexico. In the eastern Atlantic, Salmoneus saotomensis sp. nov. is described based on a single specimen from São Tomé Island in the Gulf of Guinea. The new species is characterised by the somewhat enlarged minor cheliped and is compared to all other Atlantic species presenting this feature. Deioneus sandizelli Dworschak, Anker & Abed-Navandi, 2000 is reported from São Tomé Island, for the first second time since its original description based on the Cape Verde type material. The characters separating Deioneus and Salmoneus are reassessed. The new evidence shows that these two genera are distinguished by only one morphological feature known to be variable in at least one non-related alpheid genus. However, in view of the increasing morphological heterogeneity in Salmoneus, it seems more appropriate to retain Deioneus as a valid genus for it may represent a distinct clade that also includes several other species currently placed in Salmoneus. 

scholarly journals New Records of Grey Cutthroat, Synaphobranchus Affinis (Actinopterygii: Anguilliformes: Synaphobranchidae) from the Eastern-Central Atlantic Ocean

2010 ◽  
Vol 40 (1) ◽  
pp. 67-70 ◽  
Author(s):  
Armando J. Almeida ◽  
Manuel Biscoito ◽  
José I. Santana ◽  
José A. González
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Central Atlantic

The significance of iron-stained foraminifera off SE Trinidad, West Indies, western central Atlantic Ocean

2010 ◽  
Vol 147 (5) ◽  
pp. 728-736 ◽  
Author(s):  
BRENT WILSON
Keyword(s):  
Atlantic Ocean ◽  
Planktonic Foraminifera ◽  
Photic Zone ◽  
Foraminiferal Assemblage ◽  
Western Atlantic ◽  
Sequence Stratigraphic ◽  
Holocene Transgression ◽  
Orinoco Delta ◽  
Algal Symbiont ◽  
Central Atlantic

AbstractEleven samples of seafloor sediment were taken from water depths of 78–90 m within the Savonette Field, off SE Trinidad, western Atlantic Ocean. This surface sediment is relict, having been deposited during an early Holocene transgression. The samples yielded much iron-stained quartz and a rich assemblage of dead foraminifera, of which 75% of planktonic foraminifera were stained with iron, as was 66.5% of the calcareous benthonic foraminiferal assemblage. The fauna, both iron-stained and unstained, was dominated by Cibicidoides ex. gr. pseudoungerianus, and is concluded, despite the proximity of the Orinoco Delta, to be equivalent to a relict Cibicidoides biofacies in carbonate-rich areas of the Gulf of Mexico. Staining was by limonite and hematite. Differing percentages of calcareous benthonic species had been stained with iron, ANOVA revealing three groups of species within which the mean percentage of iron-stained specimens per sample did not differ: (a) Globocassidulina subglobosa and Hanzawaia concentrica; (b) Amphistegina gibbosa, Cassidulina norcrossi australis Cibicioides ex. gr. pseudoungerianus, C. io, Elphidium translucens and Quinqueloculina lamarckiana; and (c) Eponides antillarum and E. repandus. It is concluded that species differ in their susceptibility to iron staining, and that planktonic foraminifera are more susceptible than most benthonic species. Although waters off northern South America are turbid and the photic zone only ~25 m deep, the relict assemblage contained 8.4% algal symbiont-bearing foraminifera (especially A. gibbosa and E. translucens) that would be limited to the photic zone. These are thought to have lived at a time early in the Holocene transgression when sequestration of sediment within the Orinoco delta rendered the water sufficiently clear for viable populations of symbiont-bearing foraminifera. Should iron-stained foraminifera prove to be restricted to transgressive systems tracts, this would make them a useful sequence stratigraphic tool.

scholarly journals An updated checklist of the marine Decapoda of Ascension Island, central Atlantic Ocean

2014 ◽  
Vol 97 (4) ◽  
pp. 759-770 ◽  
Author(s):  
S. De Grave ◽  
A. Anker ◽  
P.C. Dworschak ◽  
P.F. Clark ◽  
P. Wirtz
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Ascension Island ◽  
Decapod Crustacea ◽  
Central Atlantic ◽  
Made In

The decapod Crustacea from Ascension Island are reported upon on the basis of major expeditions undertaken during 2008 and 2012, including several minor additional collections made in other years. Two species, Gnathophyllum americanumandCorallianassa longiventrisare new records for the island bringing the total known marine decapod fauna to 75 species, of which 11 are currently endemic to Ascension Island.

Sign in / Sign up

Export Citation Format

Share Document