scholarly journals Deep-sea ichthyofauna from Eastern Mediterranean Sea, Egypt: Update and new records

2016 ◽  
Vol 42 (4) ◽  
pp. 479-489 ◽  
Author(s):  
Mahmoud M.S. Farrag
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
New Records ◽  
Eastern Mediterranean ◽  
Eastern Mediterranean Sea

First records of six species of crustaceans for the eastern Mediterranean Sea

Crustaceana ◽  
2019 ◽  
Vol 92 (11-12) ◽  
pp. 1403-1414
Author(s):  
Ozge Ozgen ◽  
Sermin Acik ◽  
Kerem Bakir
Keyword(s):  
Mediterranean Sea ◽  
New Record ◽  
New Records ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Posidonia Oceanica ◽  
The Other ◽  
Eastern Mediterranean Sea ◽  
Crustacean Species ◽  
Ecological Characteristics

Abstract This paper deals with six crustacean species associated with Posidonia oceanica (Linnaeus) Delile, 1813 meadows along the Aegean coasts of Turkey: Caprella tavolarensis, Eriopisella ruffoi, Iphimedia vicina, Astacilla mediterranea, Apseudopsis minimus and Macropodia deflexa. Apseudopsis minimus is a new record for the Turkish coast of the Aegean Sea, the other five species are new records for the eastern Mediterranean. Brief descriptions of the species and their morphological and ecological characteristics are given.

scholarly journals A new genus and species of spionid polychaete (Annelida, Spionidae) from a deep-water cold seep site in the Eastern Mediterranean Sea off Turkey

Zoosymposia ◽  
2020 ◽  
Vol 19 (1) ◽  
pp. 121-134
Author(s):  
JAMES A. BLAKE ◽  
PATRICIA A. RAMEY-BALCI
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Deep Water ◽  
Deep Sea ◽  
New Genus ◽  
Microbial Mats ◽  
Eastern Mediterranean ◽  
Cold Seep ◽  
New Genus And Species ◽  
Eastern Mediterranean Sea

A new spionid polychaete was discovered in deep-sea sediments in the eastern Mediterranean Sea during an expedition by the Ocean Exploration Trust. Specimens were collected by the E/V Nautilus in August 2012 off Turkey, at a depth of 2216 m on the Anaximander Seamount at the Amsterdam mud volcano site. Cores were taken from sediments covered with microbial mats. The new species belongs to the Pygospiopsis-Atherospio Group, which has unusual neuropodial hooks, modified neurosetae in some anterior setigers, and branchiae in middle body segments that are broad, flattened, and fused to the dorsal lamellae. The new species is assigned to a new genus and species, Aciculaspio anaximanderi n. gen., n. sp., and is unusual in having a reduced setiger 1 lacking notosetae; well-developed pre- and postsetal lamellae that encompass the neurosetae and notosetae; notopodial lamellae free from the branchiae in anterior setigers that become fused and flattened in middle and posterior segments; unidentate hooded hooks in both noto- and neuropodia; neuropodial spines in setigers 4–10; and a pygidium with three anal cirri. Aciculaspio anaximanderi n. gen., n. sp. is the first species in the Atherospio-Pygospiopsis Group collected from a deep-water cold seep habitat.

Composition and distribution patterns of eukaryotic microbial plankton in the ultra-oligotrophic Eastern Mediterranean Sea

2020 ◽  
Vol 84 ◽  
pp. 155-173
Author(s):  
I Santi ◽  
P Kasapidis ◽  
S Psarra ◽  
G Assimakopoulou ◽  
A Pavlidou ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
Environmental Variables ◽  
Eastern Mediterranean ◽  
Distribution Patterns ◽  
Eastern Mediterranean Sea ◽  
Operational Taxonomic Units ◽  
Microbial Eukaryotes ◽  
Levantine Basin ◽  
Microbial Plankton

Marine microbial eukaryotes play crucial roles in water-column ecosystems; however, there are regional gaps in the investigation of natural microbial eukaryote communities, and uncertainties concerning their distribution persevere. This study combined 18S rRNA metabarcoding, biomass measurements and statistical analyses of multiple environmental variables to examine the distribution of planktonic microbial eukaryotes at different sites and water layers in the ultra-oligotrophic Eastern Mediterranean Sea (Western Levantine Basin). Our results showed that microbial eukaryotic communities were structured by depth. In surface waters, different sites shared high percentages of molecular operational taxonomic units (MOTUs), but this was not the case for deep-sea communities (≥1000 m). Plankton biomass was significantly different among sites, implying that communities of a similar composition may not support the same activity or population size. The deep-sea communities showed high percentages of unassigned MOTUs, highlighting the sparsity of the existing information on deep-sea plankton eukaryotes. Water temperature and dissolved organic matter significantly affected community distribution. Micro-eukaryotic distribution was additionally affected by the nitrogen to phosphorus ratio and viral abundance, while nano- and pico-communities were affected by zooplankton. The present study explores microbial plankton eukaryotes in their natural oligotrophic environment and highlights that, even within restricted oceanic areas, marine plankton may follow distribution patterns that are largely controlled by environmental variables.

Niche differentiation among mat-forming, sulfide-oxidizing bacteria at cold seeps of the Nile Deep Sea Fan (Eastern Mediterranean Sea)

Geobiology ◽  
2011 ◽  
Vol 9 (4) ◽  
pp. 330-348 ◽  
Author(s):  
S. GRÜNKE ◽  
J. FELDEN ◽  
A. LICHTSCHLAG ◽  
A.-C. GIRNTH ◽  
D. DE BEER ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
Eastern Mediterranean ◽  
Niche Differentiation ◽  
Cold Seeps ◽  
Eastern Mediterranean Sea ◽  
Sea Fan
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