scholarly journals New discoveries for the subfamily Phtisicinae Vassilenko, 1968 (Crustacea: Senticaudata) from the Brazilian coast

2020 ◽  
Author(s):  
Fábio da Motta Mauro ◽  
Priscila Soares do Nascimento ◽  
Cristiana Silveira Serejo
Keyword(s):  
Atlantic Ocean ◽  
Original Description ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Espírito Santo ◽  
Campos Basin ◽  
Southwestern Atlantic Ocean ◽  
The Caribbean ◽  
Espirito Santo ◽  
First Time

Amphipod material collected from Brazil on Ilha do Arvoredo, (Santa Catarina), Campos Basin, (Rio de Janeiro) and Espírito Santo Basin (Espírito Santo) in the southwestern Atlantic Ocean yielded new taxonomic findings for the subfamily Phtisicinae Vassilenko, 1968. Hemiproto wigleyi McCain, 1968, previously recorded from the Gulf of Mexico to the Caribbean Sea, is herein redescribed and recorded for the first time from the Brazilian coast. The type material of Phtisica verae Quitete, 1979, a poorly described species recorded from Brazil and based only on its original description, was examined and considered herein as a junior synonym of P. marina Slabber, 1769, a well-known and widely distributed species from the Atlantic Ocean and the Mediterranean Sea. In this paper, Phtisica marina is redescribed, with its two morphotypes of male gnathopod two, and compared with previous descriptions. The geographic distribution of both H. wigleyi and P. marina is provided. 

scholarly journals Three new species of Levinsenia Mesnil, 1897 (Annelida: Paraonidae) from shallow and deep waters of Southwestern Atlantic Ocean

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0244741
Author(s):  
Natália Ranauro ◽  
Rômulo Barroso ◽  
João Miguel de Matos Nogueira
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Espírito Santo ◽  
Deep Waters ◽  
Southwestern Atlantic Ocean ◽  
Benthic Survey ◽  
Three New Species ◽  
Espirito Santo

Three new species of Levinsenia were collected during a benthic survey, from 10–3,000 m deep, in Espírito Santo Basin, off the southeastern Brazilian coast. These species are L. paivai sp. nov., L. blakei sp. nov. and L. lesliae sp. nov. Members of L. paivai sp. nov. are recognized by the presence of nine pairs of well-developed and heavily ciliated branchiae, those of L. blakei sp. nov. are characterized by the presence of three pairs of small branchiae, and those of L. lesliae sp. nov., by the absence of branchiae and presence of notopodial transitional chaetae. These new species are described herein and compared to the most similar congeners. These are the first new species of Levinsenia described from off the Brazilian coast.

scholarly journals Morphology and distribution of two epizoic diatoms (Bacillariophyta) in Brazil

2012 ◽  
Vol 26 (4) ◽  
pp. 836-841 ◽  
Author(s):  
Luciano Felício Fernandes ◽  
Mariana Calixto-Feres
Keyword(s):  
Atlantic Ocean ◽  
Body Surface ◽  
Range Limits ◽  
Brazilian Coast ◽  
Entire Body ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
Electron Microscopes ◽  
First Time ◽  
Euterpina Acutifrons

The epizoic diatoms Pseudohimantidium pacificum and Falcula hyalina, which live on copepods, were investigated using light and electron microscopes, based on material gathered from different marine environments along the Brazilian coast. Pseudohimantidium pacificum is reported for the first time for the Southwestern Atlantic Ocean, significantly enlarging its range of geographic distribution. This species usually covers the entire body surface of the copepods Corycaeus amazonicus and Euterpina acutifrons, and of cypris larvae of Cirripedia. Falcula hyalina uses a higher number of copepod hosts, particularly Oithona oswaldocruzii, Pseudodiaptomus richardii and Acartia spp. The valve morphology and biometrical data of both diatoms were within the range limits recorded in the literature, including the original publications. Both species occurred in all the sampling stations along the Brazilian coastline stretching from 12°S down to 28°S. Falcula hyalina had already been found as far as latitude 31°S in the Southwestern Atlantic Ocean.

Scissurella clathrata in the San Jorge Gulf (Argentina) and the identity of the enigmatic S. dalli Bartsch, 1903 (Gastropoda: Scissurellidae)

Zoosymposia ◽  
2008 ◽  
Vol 1 ◽  
pp. 265-269
Author(s):  
DIEGO G. ZELAYA ◽  
DANIEL L. GEIGER
Keyword(s):  
United States ◽  
Atlantic Ocean ◽  
Smithsonian Institution ◽  
Original Description ◽  
The United States ◽  
Type Locality ◽  
National Museum ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
First Time

Scissurella dalli Bartsch, 1903, from the southwestern Atlantic Ocean has been reported at least six times in the malacological literature. However, the species is thus far known only from the original description; it was never fi gured; and the type material is missing from the original repository, the United States National Museum, Smithsonian Institution. In the present study, we examine specimens of a scissurellid collected adjacent to the type locality of Scissurella dalli, and evaluate their identity. These specimens proved to correspond to Scissurella clathrata Strebel, 1908. Even though this species shows some similarity with the original description of Scissurella dalli, the vague description by Bartsch lacking details and even containing contradictory indications, led us to the conclusion that they are not conspecifi c. Thus, Scissurella clathrata is reported for the first time at the type locality of S. dalli, and the latter remains as a nomen dubium.

New species of the genera Havelockia and Thyone (Echinodermata: Holothuroidea) and first record of T. crassidisca from the southwestern Atlantic Ocean

Zootaxa ◽  
2018 ◽  
Vol 4407 (4) ◽  
pp. 553 ◽  
Author(s):  
LUCIANA MARTINS ◽  
MARCOS TAVARES
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Body Wall ◽  
First Record ◽  
South Atlantic Ocean ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
Two New Species ◽  
First Time

Two new species in the genera Thyone and Havelockia are described and illustrated based upon specimens collected from off the southeastern Brazilian coast. Thyone florianoi sp. nov. is characterized by having two pillared body wall tables with four-holed discs and introvert with multilocular tables. Thyone crassidisca is recorded herein for the first time from the South Atlantic Ocean (Brazil). Havelockia mansoae sp. nov. is distinctive in having two pillared body wall tables with four-holed discs and introvert with plates. This is the first record of the genus Havelockia from Brazilian waters. 

Description of three new species of Ampelisca (Crustacea: Amphipoda: Ampeliscidae) from Southwestern Atlantic, with a key of the genus for Brazilian species

Zootaxa ◽  
2007 ◽  
Vol 1626 (1) ◽  
pp. 25-37 ◽  
Author(s):  
MARIA TERESA VALÉRIO-BERARDO
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
Benthic Communities ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Soft Bottom ◽  
Brazilian Species ◽  
Southwestern Atlantic Ocean ◽  
Three New Species

Ampelisca species are inhabitant of soft bottom marine benthic communities of tropical to cold – temperate zones. Prior to this paper, 11 species of the genus were recognized from Brazilian coast. Three new species of Ampelisca are herein described: Ampelisca longipropoda, Ampelisca meridionalis and Ampelisca youngi. The specimens were dredged from the continental shelf of Southwestern Atlantic Ocean between the latitudes 22°06’S and 34°32’S. A key to the Ampelisca species of the Brazilian coast is provided.

scholarly journals New records of Tindariopsis (Pelecypoda, Protobranchia) from Brazil - Campos Basin (off Rio de Janeiro)

2011 ◽  
Vol 11 (3) ◽  
pp. 423-429
Author(s):  
Natalia Pereira Benaim ◽  
Ricardo Silva Absalão
Keyword(s):  
Atlantic Ocean ◽  
Continental Slope ◽  
Type Species ◽  
New Records ◽  
First Record ◽  
Brazilian Coast ◽  
Surface Sculpture ◽  
Campos Basin ◽  
The Caribbean

As a part of the Environmental Characterization of the Campos Basin project, we obtained samples from the continental slope benthos. As a consequence, specimens of Tindariopsis aeolata (Dall, 1889) and Tindariopsis agathida (Dall, 1889) were found. These species show prodissoconch surface sculpture patterns that were never seen for species of Tindariopsis. The presence of this kind of sculpture in the type species of the genus, T. agathida, adds diagnostic characters to the genus. T. agathida and T. aeolata are typical from the Caribbean Realm (Guyana and Tobago). This is the first record of T. aeolata in the southernmost area of the Atlantic Ocean, and also the shallowest record (1000 m) for this species. With this finding of specimens from the Bacia de Campos, the distribution of T. agathida can now be extended in the Brazilian coast from 7º to 22º S.

Amaryllididae and Lysianassidae (Amphipoda: Lysianassoidea) from off the central coast of Brazil (11oS-22oS), with descriptions of three new species

Zootaxa ◽  
2008 ◽  
Vol 1718 (1) ◽  
pp. 45 ◽  
Author(s):  
ANDRÉ R. SENNA ◽  
CRISTIANA S. SEREJO
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
Atlantic Ocean ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Central Coast ◽  
Southwestern Atlantic Ocean ◽  
Three New Species ◽  
Brazilian Province ◽  
A New Species

Material collected on the central Brazilian coast from the REVIZEE Benthos Program was analyzed and three new species were herein described. Knowledge about sexual dimorphism on Bonassa is improved. The hypothesis of endemism of the genus Amaryllis to Australia is contested with the discovery of a new species of Amaryllis in the Southwestern Atlantic Ocean. A new species of Lysianassa is described, and its differences to L. brasiliensis are commented too. Lysianopsis concavus Senna, 2007 is herein described with more details in description and figures. The distributions of the described species are given. Keys to identification of Brazilian Lysianassoidea families and Lysianassidae species are presented in this paper.Key-words: Amaryllis, Bonassa, Lysianassa, Lysianopsis, taxonomy, Brazilian province

scholarly journals Remarks on the morphology and distribution of some rare centric diatoms in southern Brazilian continental shelf and slope waters

2012 ◽  
Vol 60 (4) ◽  
pp. 415-427 ◽  
Author(s):  
Marinês Garcia ◽  
Clarisse Odebrecht
Keyword(s):  
Atlantic Ocean ◽  
Continental Shelf ◽  
Southwestern Atlantic ◽  
Patos Lagoon ◽  
La Plata ◽  
Centric Diatoms ◽  
Southwestern Atlantic Ocean ◽  
The Family ◽  
Scanning Electron Microcopy ◽  
First Time

This paper provides information on the morphology and occurrence of extant diatoms of the family Asterolampraceae and Azpeitia species of the southernmost Brazilian continental shelf and slope waters in the Southwestern Atlantic Ocean (28 -34ºS), under the influence of Tropical, Subtropical, Subantarctic Waters, terrestrial discharges from La Plata River and Lagoa dos Patos lagoon. Plankton was sampled (20 µm net; vertical hauls) at the same 27 stations in winter 2005 and summer 2007. Among Asterolampraceae, Asteromphalus flabellatus was the most frequent species (57% of samples) observed mainly in winter samples (92%) in Subtropical Shelf Water but also under the influence of La Plata River plume (salinity <35). Lower frequencies were observed for Asterolampra marylandica, Asteromphalus elegans, Asteromphalus heptactis and Spatangidium arachne. Four species of Azpeitia were observed: A. barronii and A. neocrenulata for the first time in the South Atlantic Ocean while A. africana and A. nodulifer had already been registered in equatorial and southern areas of Brazil. All Azpeitia species were rare (19%) in offshore samples (100-200 m depth. Remarks on the morphology based on light and scanning electron microcopy observations are provided along with their distribution in the study area.

A new species of Metrarabdotos (Bryozoa, Ascophora) from Brazil

Zootaxa ◽  
2009 ◽  
Vol 2222 (1) ◽  
pp. 57-65 ◽  
Author(s):  
FLÁVIA T. SANTANA ◽  
LAÍS V. RAMALHO ◽  
CARMEN P. GUMARÃES
Keyword(s):  
New Species ◽  
Morphological Features ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Fossil Species ◽  
Morphological Disparity ◽  
Espírito Santo ◽  
Living Species ◽  
Espirito Santo ◽  
A New Species

Worldwide there are approximately 40 species of Metrarabdotos, only six of which are extant. Among the living species, three were previously recorded from the Brazilian coast: M. unguiculatum, M. tuberosum, and M. gulo, collected from Bahia and Espírito Santo States. There are no records of fossil species of Metrarabdotos from Brazil. This study reports two living Metrarabdotos species, collected from three states in Brazil―Sergipe, Bahia and Espírito Santo. One of the species, M. sergipensis, is new to science. Its morphological features, such as extreme tuberculation of the zooidal frontal shield, add appreciably to the range of morphological disparity known in the genus.Key-words: Brazil, Bryozoa, Metrarabdotosidae, new species, Southwestern Atlantic, taxonomy

Sign in / Sign up

Export Citation Format

Share Document