scholarly journals Tracing tropical and intermediate waters from the South China Sea to the Okinawa Trough and beyond

2005 ◽  
Vol 110 (C5) ◽  
Author(s):  
Chen-Tung Arthur Chen
Keyword(s):  
South China Sea ◽  
South China ◽  
Okinawa Trough ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
The Okinawa Trough ◽  
Intermediate Waters

Integrative taxonomy of enigmatic deep-sea true whelks in the sister-genera Enigmaticolus and Thermosipho (Gastropoda: Buccinidae)

2020 ◽  
Author(s):  
Chong Chen ◽  
Ting Xu ◽  
Koen Fraussen ◽  
Jian-Wen Qiu
Keyword(s):  
South China Sea ◽  
South China ◽  
Okinawa Trough ◽  
Morphological Variability ◽  
The South China Sea ◽  
Coi Gene ◽  
The South ◽  
China Sea ◽  
The Okinawa Trough ◽  
New Findings

Abstract Whelks in the sister-genera Enigmaticolus and Thermosipho (Gastropoda: Buccinidae) commonly inhabit deep-water hydrothermal vents and hydrocarbon seeps. Thermosipho desbruyeresi, originally described from the Lau Basin, was thought to occur in vents across the western Pacific, with Eosipho desbruyeresi nipponensis described from the Okinawa Trough treated as its junior synonym. However, new material collected from vents in the Okinawa Trough and seeps in the South China Sea exhibit key characteristics of Enigmaticolus. Re-examination of the types revealed that Eosipho d. nipponensis is actually morphologically distinct from Thermosipho desbruyeresi. A molecular phylogeny reconstructed using the cytochrome c oxidase subunit I (COI) gene confirmed the placement of both taxa in Enigmaticolus and supported their distinctiveness at the species level. We, therefore, rehabilitate E. d. nipponensis as Enigmaticolus nipponensis comb. nov. and transfer T. desbruyeresi to the same genus, as Enigmaticolus desbruyeresi comb. nov. Our results also revealed that Enigmaticolus monnieri described from east Africa and E. inflatus described from the South China Sea are in fact conspecific with E. nipponensis. We discuss the distribution and biogeography, as well as morphological variability, of Enigmaticolus in the light of these new findings. Thermosipho is then left with only its type species, T. auzendei from the East Pacific vents. We have revised the diagnosis for the two genera, as well as the species included in them.

scholarly journals The tug‐of‐war between the West Philippine Sea and South China Sea Tropical Waters and Intermediate Waters in the Okinawa Trough

2016 ◽  
Vol 121 (3) ◽  
pp. 1736-1754 ◽  
Author(s):  
Chen‐Tung Arthur Chen ◽  
Ya‐Ting Yeh ◽  
Tetsuo Yanagi ◽  
Yan Bai ◽  
Xianqiang He ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Okinawa Trough ◽  
The West ◽  
Tropical Waters ◽  
China Sea ◽  
Philippine Sea ◽  
The Okinawa Trough ◽  
West Philippine Sea ◽  
Intermediate Waters
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