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.

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 NEW RECORDS OF THE DISTINCTIVE BENTHIC DINOFLAGELLATE GENUS Cabra (DINOPHYCEAE)

2015 ◽  
Vol 30 (1) ◽  
pp. 63
Author(s):  
F. Gómez ◽  
R. M. Lopes
Keyword(s):  
Atlantic Ocean ◽  
Light Microscopy ◽  
Mediterranean Sea ◽  
New Records ◽  
Morphological Variability ◽  
Caribbean Sea ◽  
Original Description ◽  
Undescribed Species ◽  
The Caribbean ◽  
First Time

The benthic dinoflagellate genus Cabra is reported for the first time in the Mediterranean Sea and the South Atlantic Ocean, with additional records in the Caribbean Sea and the eastern Asian coasts. Cabra aremorica is reported for the first time after the original description. However, these records should be considered cautiously because the distinction between Cabra aremorica and C. reticulata is difficult based on routine light microscopy observations. It is uncertain whether there is a high intraspecific morphological variability or several co-occurring undescribed species. Cabra levis, a species recently described, is reported for first time beyond the type locality. Nuevos registros del distintivo género de dinoflagelado bentónico Cabra (Dinophyceae) El dinoflagelado bentónico del géneroCabrase describe por primera vez en el Mar Mediterráneo y el Océano Atlántico Sur, con registros adicionales en el Mar Caribe y las costas orientales de Asia. Cabra aremorica se cita por primera vez después de la descripción original. Sin embargo, estos registros deben ser considerados con cautela porque la distinción entre Cabra aremorica y C. reticulata es difícil basándose solo en observaciones rutinarias de microscopía óptica. No está claro si existe una alta variabilidad morfológica intra-específica o si existen varias especies no descritas que coexisten. Cabra levis, una especie recientemente descrita, se describe por primera vez más allá de su localidad tipo.

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.

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 Lepidochelys olivacea (Eschscholtz, 1829) (Testudines, Cheloniidae) provide evidence that Uruguayan waters are the southernmost limit of distribution for the species in the western Atlantic Ocean

Check List ◽  
2017 ◽  
Vol 13 (6) ◽  
pp. 863-869 ◽  
Author(s):  
Daniel González-Paredes ◽  
Gabriela Vélez-Rubio ◽  
Anelise Torres Hahn ◽  
María Noel Caraccio ◽  
Andrés Estrades
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Western Atlantic ◽  
Lepidochelys Olivacea ◽  
Western Atlantic Ocean

scholarly journals Epiphytic Eunotia (Bacillariophyceae) on Podostemum from Santa Catarina, southern Brazil, including new observations on morphology and taxonomy of some rare recorded species

2014 ◽  
Vol 14 (3) ◽  
Author(s):  
Kaoli Pereira Cavalcante ◽  
Priscila Izabel Tremarin ◽  
Emanuela Cristina de Castro ◽  
Carlos Eduardo Junqueira de Azevedo Tibiriçá ◽  
Juliana Wojciechowski ◽  
...  
Keyword(s):  
New Records ◽  
Morphological Variability ◽  
The State ◽  
Santa Catarina ◽  
New Variety ◽  
Unusual Position ◽  
Diatom Genus ◽  
First Time ◽  
Fine Morphology ◽  
Freshwater Diatom

Eunotia is a highly diverse diatom genus in the Neotropics. Considerable morphological variability of the valve showed in several species of the genus resulted in a quite confused taxonomy. Twelve Eunotiataxa attached to Podostemum spp. were investigated using the light microscopy (LM). Additionally, scanning electron microscopy (SEM) was used in order to investigate the fine morphology of most abundant taxa. Samples were collected from four rivers from the State of Santa Catarina between March 2009 and July 2010. The freshwater diatom flora from this south Brazilian state is poorly known in relation to its neighboring states. Eunotia biseriatoides has intermediate features betweenEunotia and Perinotia, and the circumscription of these genera is discussed here. Eunotia odebrechtiana is very similar in morphology to E. biseriatoides, and the synonymy is proposed, as well as the transfer of the variety E. odebrechtiana var.essequiboensis to the species E. biseriatoides. The fine structure of E. epithemioides is showed for the first time in SEM, revealing the unusual position of the rimoportula in this genus. A new variety, E. pseudosudetica var. rotundata var. nov., was proposed and compared with the typical one. Except by E. veneris, all other eleven taxa presented here are new records for the State of Santa Catarina, Brazil.

New records of Endectyon (Endectyon) xerampelina (Lamarck, 1814 (Demospongiae: Axinellida: Raspailiidae) from the Tropical Western Atlantic Ocean, with comments on its distribution and type locality

Zootaxa ◽  
2019 ◽  
Vol 4608 (1) ◽  
pp. 90
Author(s):  
JOANA SANDES ◽  
RADHARANNE RECINOS ◽  
ULISSES PINHEIRO ◽  
GUILHERME MURICY
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Axial Skeleton ◽  
Junior Synonym ◽  
Type Locality ◽  
Brazilian Coast ◽  
Western Atlantic ◽  
Western Atlantic Ocean

The demosponge genus Endectyon is characterized by the presence of acanthostyles with recurved or clavulate spines. Two subgenera are recognized, Endectyon and Hemectyon, distinguished mainly by the acanthostyles being located only in the periphery of the axial skeleton in Endectyon, or forming the ectosomal brushes in Hemectyon. Sixteen species are known worldwide, of which only two were reported from the Western Atlantic Ocean. However, the type locality of Endectyon xerampelina is uncertain, and it could be located either in the Western Atlantic or in Australia. In the present study, we describe new records of E. xerampelina from the Brazilian coast and propose that Raspailia (R.) johnhooperi from the Guyana shelf is a junior synonym of E. xerampelina. Our results support the hypothesis that the type locality of E. xerampelina is located somewhere in the Tropical Western Atlantic Ocean and also that the species belongs to the subgenus Endectyon (Endectyon). We amended the diagnosis of the subgenus Endectyon (Endectyon) to account for the variability of acanthostyle shape in E. (E.) xerampelina, assigning greater taxonomic value to the position of the echinating megascleres than to their shape and pattern of spination. 

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