A new glass sponge genus (Hexactinellida: Euplectellidae) from abyssal depth of the Yap Trench, northwestern Pacific Ocean

Zootaxa ◽  
2019 ◽  
Vol 4567 (2) ◽  
pp. 367 ◽  
Author(s):  
CHENGCHENG SHEN ◽  
MARTIN DOHRMANN ◽  
DONGSHENG ZHANG ◽  
BO LU ◽  
CHUNSHENG WANG
Keyword(s):  
Pacific Ocean ◽  
New Genus ◽  
First Record ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
Body Form ◽  
Intraspecific Divergence ◽  
Molecular Approaches ◽  
Hexactinellid Sponge ◽  
Molecular Phylogenetic

In this article we report on a hexactinellid sponge new to science, Rhizophyta yapensis gen. et sp. nov., which was collected from the Yap Trench in the northwestern Pacific Ocean at an abyssal depth of 4159–4779 m. Its fungus-like body form with long peduncle and absence of hypodermalia suggest placement within the euplectellid subfamily Bolosominae Tabachnick, 2002, whereas molecular phylogenetic evidence suggests that it is sister to all remaining Euplectellidae Gray, 1867. Its rhizophytous method of attachment to the substrate, hitherto unknown from bolosomine Euplectellidae, a veil of pentactins covering the peduncle, and the presence of toothed discohexasters as the only type of microscleres, clearly characterize it as a new genus. The intraspecific divergence between holotype and paratypes of the new species is examined with both morphological and molecular approaches. This report represents the first record of a hexactinellid sponge from the Yap Trench. 

A new species of glass sponge (Hexactinellida: Sceptrulophora: Uncinateridae) from the Weijia Seamount in the northwestern Pacific Ocean

Zootaxa ◽  
2020 ◽  
Vol 4878 (2) ◽  
pp. 322-334
Author(s):  
CHENGCHENG SHEN ◽  
DONGSHENG ZHANG ◽  
BO LU ◽  
CHUNSHENG WANG
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
Glass Sponge ◽  
Body Form ◽  
Hexactinellid Sponge ◽  
The Family ◽  
Molecular Phylogenetic ◽  
A New Species

In this article we report on a hexactinellid sponge new to science, Tretopleura weijicus sp. nov., which was collected from the Weijia Seamount in the northwestern Pacific Ocean at a depth of 1995 m. Its blade-like and branching body form, the primary choanosomal framework consisting of multiaxial longitudinal strands without synapticula, and the presence of sceptrules suggest placement within the family Uncinateridae Reiswig, 2002, which is also supported by molecular phylogenetic evidence from COI and 16S sequences. The absence of swollen dermal spurs or regular pentactins and the presence of two types of discohexasters characterize it as a new species. More specimens should be collected to revise the generic characters.

Tetracoelactis ioran, a new genus and species of deep-sea anemones of the family Exocoelactinidae (Cnidaria: Anthozoa: Actiniaria) from the Northwestern Pacific Ocean

2019 ◽  
Vol 28 (2) ◽  
pp. 238-248
Author(s):  
N.P. Sanamyan ◽  
K.E. Sanamyan
Keyword(s):  
Pacific Ocean ◽  
Deep Sea ◽  
New Genus ◽  
Northwestern Pacific ◽  
Sea Anemones ◽  
Northwestern Pacific Ocean ◽  
New Genus And Species ◽  
The Family

Tetracoelactis ioran gen. et sp. nov. is described from abyssal depths of the NW Pacific and assigned to the family Exocoelactinidae. The genus is unique in having of only four meristematic zones, the lowest number among all species of Actiniaria.

scholarly journals Haimormus shimojiensis, a new genus and species of Pseudozeuxidae (Crustacea: Tanaidacea) from a submarine limestone cave in Northwestern Pacific

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4720 ◽  
Author(s):  
Keiichi Kakui ◽  
Yoshihisa Fujita
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
New Genus ◽  
The Other ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
New Genus And Species ◽  
Limestone Cave ◽  
A New Species ◽  
Submarine Caves

We establish a new pseudozeuxid genusHaimormusgen. nov. based on a new speciesHaimormus shimojiensissp. nov. which was collected from a submarine limestone cave with the entrance at 35 m depth, in the Northwestern Pacific Ocean.H. shimojiensisdiffers from the other confamilial members,Pseudozeuxo belizensisSieg, 1982 andCharbeitanais spongicolaBamber & Bird, 1997, in having the pleonite 1 without the pleopod, the pereopods 2 and 3 propodus with a ventral spiniform seta, and the pereopods 4–6 propodus with one long and two short dorsodistal setae. A key to females of species of Pseudozeuxidae is presented. This is the first tanaidacean report from submarine caves around Japan.

Major and trace element compositions and resource potential of ferromanganese crust at Takuyo Daigo Seamount, northwestern Pacific Ocean

2016 ◽  
Vol 50 (6) ◽  
pp. 527-537 ◽  
Author(s):  
Tatsuo Nozaki ◽  
Ayaka Tokumaru ◽  
Yutaro Takaya ◽  
Yasuhiro Kato ◽  
Katsuhiko Suzuki ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Trace Element ◽  
Ferromanganese Crust ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
Resource Potential

scholarly journals Characterization of Bacterial Communities in Bioaerosols over Northern Chinese Marginal Seas and the Northwestern Pacific Ocean in Spring

2019 ◽  
Vol 58 (4) ◽  
pp. 903-917 ◽  
Author(s):  
Manman Ma ◽  
Yu Zhen ◽  
Tiezhu Mi
Keyword(s):  
Pacific Ocean ◽  
Yellow Sea ◽  
Bacterial Communities ◽  
Bohai Sea ◽  
The Yellow Sea ◽  
Northwestern Pacific ◽  
Particle Sizes ◽  
Marine Aerosols ◽  
Northwestern Pacific Ocean ◽  
The Bohai Sea

AbstractStudies of the community structures of bacteria in marine aerosols of different particle sizes have not been reported. Aerosol samples were collected using a six-stage bioaerosol sampler over the Bohai Sea, the Yellow Sea, and northwestern Pacific Ocean in the spring of 2014. The diversity and composition of these samples were investigated by Illumina high-throughput sequencing, and 130 genera were detected in all of the samples; the most abundant bacterial genus was Bacteroides, followed by Prevotella and Megamonas. The Chao1 and Shannon diversity indices ranged from 193 to 1044 and from 5.44 to 8.33, respectively. The bacterial community structure in coarse particles (diameter larger than 2.1 μm) was more complex and diverse than that in fine particles (diameter less than 2.1 μm) in marine bioaerosols from over the Yellow Sea and northwestern Pacific Ocean, while the opposite trend was observed for samples collected over the Bohai Sea. Although we were sampling over marine regions, the sources of the bioaerosols were mostly continental. Temperature and wind speed significantly influenced the bacterial communities in marine aerosols of different particle sizes. There may be a bacterial background in the atmosphere in the form of several dominant taxa, and the bacterial communities are likely mixed constantly during transmission.

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