Microplastic pollution in deep-sea sediments and organisms of the Western Pacific Ocean

2020 ◽  
Vol 259 ◽  
pp. 113948 ◽  
Author(s):  
Dongdong Zhang ◽  
Xidan Liu ◽  
Wei Huang ◽  
Jingjing Li ◽  
Chunsheng Wang ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Deep Sea ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Deep Sea Sediments ◽  
The Western Pacific

Two new species of Paramphimonhystrella (Nematoda, Monhysterida, Xyalidae) from the deep-sea sediments in the Western Pacific Ocean and adjacent shelf seafloor

Zootaxa ◽  
2017 ◽  
Vol 4344 (2) ◽  
pp. 308
Author(s):  
BENZE SHI ◽  
TINGTING YU ◽  
KUIDONG XU
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Water Depth ◽  
Deep Sea ◽  
Western Pacific ◽  
Valid Species ◽  
Western Pacific Ocean ◽  
Dichotomous Key ◽  
Two New Species ◽  
Deep Sea Sediments

Two new species of marine nematodes, Paramphimonhystrella longispicula sp. n. in the deep-sea sediments from the Philippine Sea in the tropical Western Pacific Ocean with the water depth of 3920–5176 m and P. eurystoma sp. n. in the shelf seafloor from the East China Sea with the water depth of 55–64 m, are described. Both species possess long and slender spicules, which are present only in the congener P. barbula, a species discovered from the continental slope of New Zealand. Paramphimonhystrella longispicula sp. n. can be easily distinguished from P. barbula by the relatively broader buccal cavity, the unequally long cervical setae and a higher number of terminal setae. Paramphimonhystrella eurystoma sp. n. is unique in having a peculiar gubernaculum with two proximal capitula and a peculiar hammer-shaped cuticularized piece posterior to vulva, by which it can be distinguished from P. longispicula sp. n. and P. barbula as well as other congeners. Paramphimonhystrella longispicula sp. n. differs from P. eurystoma sp. n. also by the number of terminal setae (4 vs. 2). A dichotomous key to nine valid species of Paramphimonhystrella is provided. 

scholarly journals Brevibacterium profundi sp. nov., isolated from deep-sea sediment of the Western Pacific Ocean

2020 ◽  
Vol 70 (11) ◽  
pp. 5818-5823 ◽  
Author(s):  
Shengxiang Pei ◽  
Fuquan Xie ◽  
Siwen Niu ◽  
Lingqi Ma ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Deep Sea ◽  
Western Pacific ◽  
Diaminopimelic Acid ◽  
Rrna Gene ◽  
Western Pacific Ocean ◽  
Content Type ◽  
Deep Sea Sediment ◽  
Link Type ◽  
The Western Pacific

A new Gram-stain-positive, aerobic, non-motile and rod-shaped actinobacterium, designated O1T, was isolated from a deep-sea sediment of the Western Pacific Ocean. Strain O1T showed optimal growth at 30 °C, between pH 6.0 and 8.0, and in the presence of 1–5 % (w/v) NaCl. The predominant menaquinone was MK-8 (H2), and anteiso-C15 : 0 and anteiso-C17 : 0 were the major fatty acids. The diagnostic diamino acid in the cell-wall peptidoglycan was meso-diaminopimelic acid. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and one unknown glycolipid. The DNA G+C content of strain O1T was 64.9 mol% and the genome size was 4.17 Mb. Based on a similarity search and phylogenetic analysis of the 16S rRNA gene sequence, strain O1T belonged to the genus Brevibacterium . The values of average nucleotide identity and in silico DNA–DNA hybridization between strain O1T and its close relatives were well below the thresholds used for the delineation of a new species. On the basis of the morphological and chemotaxonomic characteristics, as well as the genotypic data, it is proposed that strain O1T represents a novel species of the genus Brevibacterium , for which the name Brevibacterium profundi sp. nov. is proposed. The type strain is O1T (=JCM 33845T=MCCC 1A16744T).

Persistent organic pollutants (POPs) in deep-sea sediments of the tropical western Pacific Ocean

Chemosphere ◽  
2021 ◽  
Vol 277 ◽  
pp. 130267
Author(s):  
Meiling Ge ◽  
Xuetao Wang ◽  
Gang Yang ◽  
Zongling Wang ◽  
Zhong Li ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Deep Sea ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Tropical Western Pacific ◽  
Deep Sea Sediments

scholarly journals New Records and Mitochondrial DNA Markers of Two Deep-sea eels Collected from the Western Pacific Ocean

2021 ◽  
Author(s):  
Han-Jun Kim ◽  
jeonghoon han ◽  
Byung-Jik Kim ◽  
Kyun-Woo Lee ◽  
Kiseong Hyeong ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Pacific Ocean ◽  
16S Rrna ◽  
Dna Markers ◽  
Deep Sea ◽  
New Records ◽  
Western Pacific ◽  
Rrna Gene ◽  
Western Pacific Ocean ◽  
The Western Pacific

Abstract Two deep-sea eels collected from the western Pacific Ocean are described in this study. Based on their morphological characteristics, the two deep-sea eel specimens were assumed to belong to the cusk-eel family Ophidiidae and the cutthroat eel family Synaphobranchidae. To accurately identify the species of the deep-sea eel specimens, we sequenced the mitochondrial genes (cytochrome c oxidase subunit 1 (CO1) and 16S ribosomal RNA (16S rRNA)). Through molecular phylogenetic analysis based on mtDNA CO1 and 16S rRNA gene sequences, these species clustered with the genera Bassozetus and Synaphobranchus, suggesting that the deep-sea eel specimens collected are two species from the genera Bassozetus and Synaphobranchus in the western Pacific Ocean, respectively. This is the first study to report new records of the genera Bassozetus and Synaphobranchus from the western Pacific Ocean based on mitochondrial DNA markers.

scholarly journals Variation Calcium Carbonate Content in Deep-Sea Pelagic Sediments of the Western Pacific Ocean

2010 ◽  
Vol 32 (1) ◽  
pp. 15-22
Author(s):  
Boo-Keun Khim ◽  
Yeo-Hun Kim ◽  
Hyung-Jeek Kim ◽  
Ki-Seong Hyeong ◽  
Chan-Min Yoo
Keyword(s):  
Calcium Carbonate ◽  
Pacific Ocean ◽  
Deep Sea ◽  
Western Pacific ◽  
Carbonate Content ◽  
Western Pacific Ocean ◽  
Calcium Carbonate Content ◽  
The Western Pacific
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