Bacterial diversity in deep-sea sediments under influence of asphalt seep at the São Paulo Plateau

A new genus and species of the family Phoxocephalidae is here described with material collected during the Mini Biological Trawl Project at 224 and 500 m depth off Brazil’s southeastern coast in the states of Rio de Janeiro and São Paulo. Atlantiphoxus wajapi n. gen., n. sp. can be grouped in the subfamily Phoxocephalinae and seems to be morphologically close to Fuegiphoxus Barnard and Barnard, 1980 and Parharpinia Stebbing, 1899. However it can be easily distinguished within the phoxocephalids by the following characters: deep pereonites with small coxae; rostrum unconstricted; eyes absent; mandible molar not triturative, but as a small hump with 3 multicuspidate stout setae; pereopods 3-4 with stout dactylus; pereopod 5 basis strongly tapering distally; pereopod 7 basis anterodistal corner with a row of long plumose setae; dactylus elongate. Epimeral plate 3 posteroventral margin strongly produced.

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Bacterial Diversity in Deep-Sea Sediments from Afanasy Nikitin Seamount, Equatorial Indian Ocean

Geomicrobiology Journal ◽

10.1080/01490451.2014.918214 ◽

2014 ◽

Vol 31 (10) ◽

pp. 942-949 ◽

Cited By ~ 6

Author(s):

Rakhee Khandeparker ◽

Ram Murti Meena ◽

Deepti Deobagkar

Keyword(s):

Indian Ocean ◽

Bacterial Diversity ◽

Deep Sea ◽

Equatorial Indian Ocean ◽

Deep Sea Sediments

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Deep sea decapod crustaceans of São Pedro and São Paulo Archipelago, Equatorial Atlantic, Brazil

Zootaxa ◽

10.11646/zootaxa.4324.2.6 ◽

2017 ◽

Vol 4324 (2) ◽

pp. 331

Author(s):

DIOGO MARTINS NUNES ◽

RÔMULO COSTA PIRES FERREIRA ◽

FÁBIO H. V. HAZIN ◽

PAULO TRAVASSOS ◽

JESSER FIDELIS DE SOUZA-FILHO

Keyword(s):

Deep Sea ◽

Sao Paulo ◽

São Paulo ◽

Decapod Crustaceans ◽

Equatorial Atlantic ◽

Benthic Species ◽

Current Record

Six species of deep sea decapod crustaceans (Chaceon gordonae, Bathynectes longispina, Dromia bollorei, Homola mini-ma, Nematocarcinus gracilipes and Plesionika martia) were sampled around the vicinity of São Pedro and São Paulo Archipelago, Brazil (0°55´N; 29°21´W), after nine scientific surveys to explore demersal and benthic species in the area. Specimens were collected by bottom traps between 200 and 700 m deep, from 2012 to 2015. The current record enlarges the knowledge of the distribution of five of these species, new to the Archipelago. Chaceon gordonae was previously known to the area.

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Distribution, relative abundance and diversity of deep sea species at Sao Pedro and Sao Paulo Archipelago, Brazil

Latin American Journal of Aquatic Research ◽

10.3856/vol44-issue2-fulltext-4 ◽

2016 ◽

Vol 44 (2) ◽

pp. 228-237 ◽

Cited By ~ 3

Author(s):

Diogo M. Nunes ◽

Paulo Travassos ◽

Romulo Ferreira ◽

Fabio Hazin

Keyword(s):

Relative Abundance ◽

Deep Sea ◽

Sao Paulo ◽

São Paulo ◽

Abundance And Diversity

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A new gastropod associated with a deep-sea whale carcass from São Paulo Ridge, Southwest Atlantic

Zootaxa ◽

10.11646/zootaxa.4568.2.9 ◽

2019 ◽

Vol 4568 (2) ◽

pp. 347 ◽

Cited By ~ 2

Author(s):

KAZUNORI HASEGAWA ◽

YOSHIHIRO FUJIWARA ◽

TAKASHI OKUTANI ◽

PAULO YUKIO GOMES SUMIDA ◽

MASARU KAWATO ◽

...

Keyword(s):

New Species ◽

Molecular Analysis ◽

Deep Sea ◽

Submarine Canyon ◽

Sao Paulo ◽

The Other ◽

São Paulo ◽

Southwest Atlantic ◽

Molecular Phylogenetic ◽

A New Species

An unfamiliar gastropod was collected from a deep-sea whale carcass at the base of the São Paulo Ridge in the Southwest Atlantic by the manned research submersible Shinkai 6500, and is here described as a new species of the abyssochrysoidean genus Rubyspira, R. brasiliensis sp. nov., following morphological and molecular phylogenetic examinations. There are only two other known species in the genus, which occur together in the Monterey Submarine Canyon off California. The present new species was shown by the molecular analysis to be closer to one of the Californian species than the other. It was found aggregated on and around a whale carcass at a depth of 4204 m, which represents the deepest record of whale- fall ecosystems ever discovered.

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Deep-Sea Habitats and Megafauna on the Slopes of the São Paulo Ridge, SW Atlantic

Frontiers in Marine Science ◽

10.3389/fmars.2020.572166 ◽

2020 ◽

Vol 7 ◽

Author(s):

Jose Angel A. Perez ◽

Lucas Gavazzoni ◽

Luis Henrique P. de Souza ◽

Paulo Y. Gomes Sumida ◽

Hiroshi Kitazato

Keyword(s):

Deep Sea ◽

Sao Paulo ◽

São Paulo ◽

Sw Atlantic

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Bacterial diversity in deep-sea sediments under influence of asphalt seep at the São Paulo Plateau

10.1101/753616 ◽

2019 ◽

Author(s):

Luciano Lopes Queiroz ◽

Amanda Gonçalves Bendia ◽

Rubens Tadeu Delgado Duarte ◽

Diego Assis das Graças ◽

Artur Luiz da Costa da Silva ◽

...

Keyword(s):

Deep Sea ◽

Bacterial Communities ◽

Sao Paulo ◽

Rrna Gene ◽

São Paulo ◽

Operational Taxonomic Units ◽

Uncultured Bacteria ◽

Abundant Otus ◽

Sediment Layers ◽

Next Generation Sequencing Ngs

AbstractHere we investigated the diversity of bacterial communities from deep-sea surface sediments under influence of asphalt seeps at the Sao Paulo Plateau using next-generation sequencing (NGS) method. Sampling was performed at North São Paulo Plateau using the human occupied vehicle Shinkai 6500 and her support vessel Yokosuka. The microbial diversity was studied at two surficial sediment layers (0-1 and 1-4 cm) of five samples collected in cores in water depths ranging from 2,456-2,728 m. Bacterial communities were studied through sequencing of 16S rRNA gene on the Ion Torrent platform and clustered in operational taxonomic units. We observed high diversity of bacterial sediment communities as previously described by other studies. When we considered community composition, the most abundant classes were Alphaprotebacteria (27.7%), Acidimicrobiia (20%), Gammaproteobacteria (11.3%) and Deltaproteobacteria (6.6%). Most abundant OTUs at family level were from two uncultured bacteria from Actinomarinales (5.95%) and Kiloniellaceae (3.17%). The unexpected high abundance of Alphaproteobacteria and Acidimicrobiia in our deep-sea microbial communities may be related to the presence of asphalt seep at North São Paulo Plateau, since these bacterial classes contain bacteria that possess the capability of metabolizing hydrocarbon compounds.

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Bacterial Composition and Diversity in Deep-Sea Sediments from the Southern Colombian Caribbean Sea

Diversity ◽

10.3390/d13010010 ◽

2020 ◽

Vol 13 (1) ◽

pp. 10

Author(s):

Nelson Rivera Franco ◽

Miguel Ángel Giraldo ◽

Diana López-Alvarez ◽

Jenny Johana Gallo-Franco ◽

Luisa F. Dueñas ◽

...

Keyword(s):

Bacterial Diversity ◽

Deep Sea ◽

Organic Matter Content ◽

Caribbean Sea ◽

Extreme Environment ◽

Matter Content ◽

Rrna Gene ◽

Organic Carbon Content ◽

Bacterial Composition ◽

Deep Sea Sediments

Deep-sea sediments are considered an extreme environment due to high atmospheric pressure and low temperatures, harboring novel microorganisms. To explore marine bacterial diversity in the southern Colombian Caribbean Sea, this study used 16S ribosomal RNA (rRNA) gene sequencing to estimate bacterial composition and diversity of six samples collected at different depths (1681 to 2409 m) in two localities (CCS_A and CCS_B). We found 1842 operational taxonomic units (OTUs) assigned to bacteria. The most abundant phylum was Proteobacteria (54.74%), followed by Bacteroidetes (24.36%) and Firmicutes (9.48%). Actinobacteria and Chloroflexi were also identified, but their dominance varied between samples. At the class-level, Alphaproteobacteria was most abundant (28.4%), followed by Gammaproteobacteria (24.44%) and Flavobacteria (16.97%). The results demonstrated that some bacteria were common to all sample sites, whereas other bacteria were unique to specific samples. The dominant species was Erythrobacter citreus, followed by Gramella sp. Overall, we found that, in deeper marine sediments (e.g., locality CCS_B), the bacterial alpha diversity decreased while the dominance of several genera increased; moreover, for locality CCS_A, our results suggest that the bacterial diversity could be associated with total organic carbon content. We conclude that physicochemical properties (e.g., organic matter content) create a unique environment and play an important role in shaping bacterial communities and their diversity.

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Seasonal Variation of Suicide in the City of São Paulo, Brazil, 1996–2010

Crisis ◽

10.1027/0227-5910/a000222 ◽

2014 ◽

Vol 35 (1) ◽

pp. 5-9 ◽

Cited By ~ 10

Author(s):

Daniel Hideki Bando ◽

Fernando Madalena Volpe

Keyword(s):

Seasonal Pattern ◽

Total Sample ◽

Sao Paulo ◽

Seasonal Patterns ◽

São Paulo ◽

Health Statistics ◽

Males And Females ◽

June July ◽

The City ◽

Over Time

Background: In light of the few reports from intertropical latitudes and their conflicting results, we aimed to replicate and update the investigation of seasonal patterns of suicide occurrences in the city of São Paulo, Brazil. Methods: Data relating to male and female suicides were extracted from the Mortality Information Enhancement Program (PRO-AIM), the official health statistics of the municipality of São Paulo. Seasonality was assessed by studying distribution of suicides over time using cosinor analyses. Results: There were 6,916 registered suicides (76.7% men), with an average of 39.0 ± 7.0 observed suicides per month. For the total sample and for both sexes, cosinor analysis estimated a significant seasonal pattern. For the total sample and for males suicide peaked in November (late spring) with a trough in May–June (late autumn). For females, the estimated peak occurred in January, and the trough in June–July. Conclusions: A seasonal pattern of suicides was found for both males and females, peaking in spring/summer and dipping in fall/winter. The scarcity of reports from intertropical latitudes warrants promoting more studies in this area.

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