scholarly journals A NORTHERN RECORD OF PANTROPICAL SPOTTED DOLPHINS (Stenella attenuata) IN SOUTHWEST ATLANTIC OCEAN

2020 ◽  
Vol 53 (1) ◽  
pp. 24-32
Author(s):  
Livio Gurjao
Keyword(s):  
Atlantic Ocean ◽  
Northeastern Brazil ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Southwest Atlantic ◽  
Southwestern Atlantic Ocean ◽  
The World ◽  
Northern Distribution ◽  
Stenella Attenuata ◽  
Subtropical Oceans

Pantropical spotted dolphins, Stenella attenuata, are found across all tropical and subtropical oceans around the world, but their distribution is poorly known in the Southwestern Atlantic Ocean (SWA). A group of approximately 10 S. attenuata individuals was sighted in deep (~3,000 m), warm (~27.5 °C) and oligotrophic waters, near oceanic banks off northeastern Brazil (02°04’16.68” S and 038°08’28.26” W). This sighting constitute a new record of the northern distribution of S. attenuata in SWA. More survey efforts mustbe carried out to investigate cetaceans distribution along the Brazilian coast, especially inoffshore waters.

scholarly journals The first occurrence of the Order Mormonilloida (Copepoda) in the Tropical Southwest Atlantic Ocean

2015 ◽  
Vol 87 (1) ◽  
pp. 233-237 ◽  
Author(s):  
PEDRO AUGUSTO M.C. MELO ◽  
MAURO DE MELO JÚNIOR ◽  
MOACYR ARAÚJO ◽  
SIGRID NEUMANN-LEITÃO
Keyword(s):  
Atlantic Ocean ◽  
Surface Waters ◽  
Rio Grande ◽  
Northeastern Brazil ◽  
Southwestern Atlantic ◽  
Equatorial Atlantic ◽  
Southwest Atlantic ◽  
Southwestern Atlantic Ocean ◽  
First Occurrence ◽  
Epipelagic Layer

This communication is the first report of the occurrence of the order Mormonilloida (Mormonilla phasma) in the tropical Southwestern Atlantic Ocean. Female individuals were found in surface waters from the shelf break state of Rio Grande do Norte (Northeastern Brazil) and between depths of 60 and 100 m in the epipelagic layer around the St. Peter and St. Paul Archipelago (equatorial Atlantic). This finding extends the vertical limits for this species.

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.

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

Hydromedusae (Cnidaria: Hydrozoa) from the temperate southwestern Atlantic Ocean: a review

Zootaxa ◽  
2008 ◽  
Vol 1750 (1) ◽  
pp. 1 ◽  
Author(s):  
GENZANO GABRIEL ◽  
HERMES MIANZAN ◽  
JEAN BOUILLON
Keyword(s):  
Species Richness ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
New Records ◽  
South Atlantic Ocean ◽  
Valid Species ◽  
Southwestern Atlantic ◽  
Southwest Atlantic ◽  
Number Of Species ◽  
Southwestern Atlantic Ocean

Hydromedusae are one of the best-represented planktonic groups in waters of the South Atlantic Ocean in terms of species richness. Nevertheless, medusae of the region are inadequately known because earlier studies have been limited and restricted to few areas. During the last two decades, almost 2000 samples from 54 research cruises have been collected, mostly within the continental shelf of Argentina and Uruguay (33 – 55º S). These samples provide an opportunity to significantly augment knowledge of the richness of the medusa fauna in the southwest Atlantic. Forty species of hydromedusae (six of them new records for the area), including 15 of Anthomedusae, 14 of Leptomedusae, three of Limnomedusae, four of Narcomedusae, and four of Trachymedusae, were identified. Our results indicate that previous lists overestimated species richness of hydromedusae in the area. When misidentifications, updated species synonymies, and doubtful records are taken into account, 71 valid species are recognized here from the study area. Based upon this corrected inventory list, the data suggest that the number of species of hydromedusae decreases markedly with increasing latitude, corresponding with that observed in other planktonic groups of invertebrates.

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.

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 Evaluation of the ABI/GOES-16 SST Product in the Tropical and Southwestern Atlantic Ocean

2021 ◽  
Vol 13 (2) ◽  
pp. 192
Author(s):  
Mayna Helena Azevedo ◽  
Natália Rudorff ◽  
José Antônio Aravéquia
Keyword(s):  
Water Vapor ◽  
Atlantic Ocean ◽  
Coastal Waters ◽  
Quality Level ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Data Set ◽  
Study Region ◽  
Southwestern Atlantic Ocean ◽  
Convergence Zones

Sea surface temperature (SST) is an essential climate variable used for ocean and weather monitoring and forecasting. The NOAA’s next generation geostationary satellite GOES-16 was declared operational at the east position (75°W) in December 2017, carrying onboard an Advanced Baseline Imager (ABI). The hyperspectral ABI sensor now allows SST estimates every 10–15 min at both day and nighttime, with advanced options for cloud screening and water vapor correction. In the present work, we compare the first operational ABI SST product (OSI SAF, 2018) with an in situ match-up database (MDB) across the Tropical and Southwestern Atlantic Ocean, off the Brazilian coast, throughout the year of 2018. The MDB was obtained from two long-term programs, i.e., PIRATA moored buoys (FOLTZ et al., 2016) and PNBoia moored and drifting buoys (MARINHA DO BRASIL, 2017). Separate comparisons were made for each data set, analyzing the uncertainties according to the program (i.e., buoy type and region), satellite SST quality level and influence of diurnal heating. We also compare the ABI product with the OSTIA analysis L4 SST (DONLON et al., 2012) to increment our analyses on the spatio-temporal biases within the study region. The results show that the OSI SAF ABI SST L3C has a mean bias (0.1 °C) and error (RMSE, 0.5 °C) within the GHRSST standards, with an exception being coastal waters off the southeast Brazilian coast (RMSE, 0.65 °C), which are subjected to sharp thermal fronts. The highest biases are for regions/seasons subjected to persistent cloud coverage and high water-vapor content, i.e., the Intertropical and South Atlantic Convergence Zones, as well as highly dynamic frontal zones, i.e., the Brazil Malvinas Confluence Zone, the Subtropical Front and coastal waters. The ABI SST product is suitable for operational use, and applications should explore more deeply the new set of information provided.

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. 

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.

Sign in / Sign up

Export Citation Format

Share Document