scholarly journals Plastic in the inferno: Microplastic contamination in deep-sea cephalopods (Vampyroteuthis infernalis and Abralia veranyi) from the southwestern Atlantic

2022 ◽  
Vol 174 ◽  
pp. 113309
Author(s):  
Guilherme V.B. Ferreira ◽  
Anne K.S. Justino ◽  
Leandro Nolé Eduardo ◽  
Véronique Lenoble ◽  
Vincent Fauvelle ◽  
...  
Keyword(s):  
Deep Sea ◽  
Southwestern Atlantic ◽  
Vampyroteuthis Infernalis

scholarly journals Corallimorpharians (Anthozoa: Corallimorpharia) from the Argentinean Sea

Zootaxa ◽  
2019 ◽  
Vol 4688 (2) ◽  
pp. 249-263
Author(s):  
DANIEL LAURETTA ◽  
MARIANO I. MARTINEZ
Keyword(s):  
Deep Sea ◽  
Submarine Canyon ◽  
Sister Group ◽  
Southwestern Atlantic ◽  
Sea Anemones ◽  
Northern Patagonia ◽  
Stony Corals ◽  
Internal Morphology ◽  
Southwestern Atlantic Ocean ◽  
First Time

Corallimorpharians are a relative small group of anthozoan cnidarians, also known as jewel sea anemones. They resemble actiniarian sea anemones in lacking a skeleton and being solitary, but resemble scleractinian corals in external and internal morphology, and they are considered to be the sister group of the stony corals. Corynactis carnea (=Sphincteractis sanmatiensis) is a small, common and eye catching species that inhabits the shallow water of northern Patagonia and the Argentinean shelf up to 200 m depth. Corallimorphus rigidus is registered for the first time from the southwestern Atlantic Ocean. It is a rather big and rare species that inhabits only the deep sea. Only two specimens were found at 2934 m depth in Mar del Plata submarine canyon, in an area under the influence of the Malvinas current, which may explain its occurrence. These two species are the only two known jewel sea anemones in the Argentinean sea and are reported and described herein. 

scholarly journals The first global deep-sea stable isotope assessment reveals the unique trophic ecology of Vampire Squid Vampyroteuthis infernalis (Cephalopoda)

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Alexey V. Golikov ◽  
Filipe R. Ceia ◽  
Rushan M. Sabirov ◽  
Jonathan D. Ablett ◽  
Ian G. Gleadall ◽  
...  
Keyword(s):  
Organic Matter ◽  
Stable Isotope ◽  
Deep Sea ◽  
Trophic Ecology ◽  
Global Scale ◽  
Phylogenetic Position ◽  
Relict Species ◽  
Global Comparison ◽  
Vampyroteuthis Infernalis ◽  
Isotope Analyses

AbstractVampyroteuthis infernalis Chun, 1903, is a widely distributed deepwater cephalopod with unique morphology and phylogenetic position. We assessed its habitat and trophic ecology on a global scale via stable isotope analyses of a unique collection of beaks from 104 specimens from the Atlantic, Pacific and Indian Oceans. Cephalopods typically are active predators occupying a high trophic level (TL) and exhibit an ontogenetic increase in δ15N and TL. Our results, presenting the first global comparison for a deep-sea invertebrate, demonstrate that V. infernalis has an ontogenetic decrease in δ15N and TL, coupled with niche broadening. Juveniles are mobile zooplanktivores, while larger Vampyroteuthis are slow-swimming opportunistic consumers and ingest particulate organic matter. Vampyroteuthis infernalis occupies the same TL (3.0–4.3) over its global range and has a unique niche in deep-sea ecosystems. These traits have enabled the success and abundance of this relict species inhabiting the largest ecological realm on the planet.

Atlantiphoxus wajapi n. gen., n. sp. (Crustacea: Amphipoda: Phoxocephalidae), a new deep-sea amphipod from the southwestern Atlantic

2020 ◽  
Vol 84 (2) ◽  
Author(s):  
Luiz F. Andrade ◽  
André R. Senna
Keyword(s):  
Deep Sea ◽  
Rio De Janeiro ◽  
New Genus ◽  
Sao Paulo ◽  
São Paulo ◽  
Southwestern Atlantic ◽  
New Genus And Species ◽  
Eyes Absent ◽  
Southeastern Coast ◽  
The Family

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.

Pilargidae (Annelida: Phyllodocida) from coastal and deep waters of the Southwestern Atlantic, with descriptions of two new species

Zootaxa ◽  
2020 ◽  
Vol 4878 (1) ◽  
pp. 56-76
Author(s):  
RANNYELE PASSOS RIBEIRO ◽  
ALINE DA CRUZ BARBOSA ◽  
ROBERTA FREITAS ◽  
JOANA ZANOL ◽  
CHRISTOPHER J. GLASBY ◽  
...  
Keyword(s):  
New Species ◽  
Deep Sea ◽  
New Records ◽  
Relative Length ◽  
Dorsal Surface ◽  
Ventral Surface ◽  
Southeastern Brazil ◽  
Southwestern Atlantic ◽  
Deep Waters ◽  
Two New Species

We describe seven species of Pilargidae from the coast and deep sea (300–1400 m deep) of southeastern Brazil, belonging to the genera Ancistrosyllis McIntosh, 1878, Cabira Webster, 1879, Glyphohesione Friedrich, 1950, Hermundura Müller, 1858, and Pilargis Saint-Joseph, 1899. Of those, two are new species (Glyphohesione campensis sp. nov. and Pilargis falconae sp. nov.) and two are new records of Ancistrosyllis for Brazil. Glyphohesione campensis sp. nov. is distinguished from its congeners by fewer neurochaetae, the anteriormost appearance of first notopodial spines, and intermediate relative length of dorsal and ventral cirri. Pilargis falconae sp. nov. is diagnosed by the presence of parapodial glands from the first chaetiger on the dorsal surface and from the sixth chaetiger on the ventral surface; and neurochaetae smooth capillaries and limbates with unidentate tips. Keys to pilargid species reported from, or likely to occur in, Brazilian waters are provided.

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