scholarly journals Differential patterns of connectivity in Western Pacific hydrothermal vent metapopulations: A comparison of biophysical and genetic models

2021 ◽  
Author(s):  
Corinna Breusing ◽  
Shannon B. Johnson ◽  
Satoshi Mitarai ◽  
Roxanne A. Beinart ◽  
Verena Tunnicliffe
Keyword(s):  
Hydrothermal Vent ◽  
Genetic Models ◽  
Western Pacific

scholarly journals Quantifying dispersal from hydrothermal vent fields in the western Pacific Ocean

2016 ◽  
Vol 113 (11) ◽  
pp. 2976-2981 ◽  
Author(s):  
Satoshi Mitarai ◽  
Hiromi Watanabe ◽  
Yuichi Nakajima ◽  
Alexander F. Shchepetkin ◽  
James C. McWilliams
Keyword(s):  
Gene Flow ◽  
Pacific Ocean ◽  
Hydrothermal Vent ◽  
Larval Dispersal ◽  
Marine Conservation ◽  
Western Pacific ◽  
Biophysical Model ◽  
Plate Boundaries ◽  
Western Pacific Ocean ◽  
The Western Pacific

Hydrothermal vent fields in the western Pacific Ocean are mostly distributed along spreading centers in submarine basins behind convergent plate boundaries. Larval dispersal resulting from deep-ocean circulations is one of the major factors influencing gene flow, diversity, and distributions of vent animals. By combining a biophysical model and deep-profiling float experiments, we quantify potential larval dispersal of vent species via ocean circulation in the western Pacific Ocean. We demonstrate that vent fields within back-arc basins could be well connected without particular directionality, whereas basin-to-basin dispersal is expected to occur infrequently, once in tens to hundreds of thousands of years, with clear dispersal barriers and directionality associated with ocean currents. The southwest Pacific vent complex, spanning more than 4,000 km, may be connected by the South Equatorial Current for species with a longer-than-average larval development time. Depending on larval dispersal depth, a strong western boundary current, the Kuroshio Current, could bridge vent fields from the Okinawa Trough to the Izu-Bonin Arc, which are 1,200 km apart. Outcomes of this study should help marine ecologists estimate gene flow among vent populations and design optimal marine conservation plans to protect one of the most unusual ecosystems on Earth.

Microdistribution pattern and biogeography of the hydrothermal vent communities of the Minami-Ensei Knoll in the mid-Okinawa trough, Western Pacific

1995 ◽  
Vol 42 (4) ◽  
pp. 577-598 ◽  
Author(s):  
Jun Hashimoto ◽  
Suguru Ohta ◽  
Katsunori Fujikura ◽  
Tomoyuki Miura
Keyword(s):  
Hydrothermal Vent ◽  
Okinawa Trough ◽  
Western Pacific

scholarly journals A new Western Pacific Tonguefish (Pleuronectiformes: Cynoglossidae): The first Pleuronectiform discovered at active Hydrothermal Vents

Zootaxa ◽  
2008 ◽  
Vol 1839 (1) ◽  
pp. 43 ◽  
Author(s):  
THOMAS A. MUNROE ◽  
JUN HASHIMOTO
Keyword(s):  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Okinawa Trough ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Blind Side ◽  
Dorsal Fin ◽  
Ocular Side ◽  
Fin Rays ◽  
The Western Pacific

Symphurus thermophilus n. sp., described from 16 specimens collected by submersibles, ROV, epibenthic sled and dredge, occurs on a variety of substrata at several active hydrothermal sites located at 239–733 m between 21°N and 35°S in the western Pacific Ocean. Symphurus thermophilus, the only pleuronectiform fish known to inhabit hydrothermal vent areas, is characterized by the combination of a 1–2–2–2–2 pattern of interdigitation of dorsal proximal pterygiophores and neural spines, 14 caudal-fin rays, 5 hypurals, 9 abdominal vertebrae, 47–51 total vertebrae, 88–94 dorsal-fin rays, 74–80 anal-fin rays, 100–112 scales in longitudinal series, ocular-side pigmentation pattern featuring 5–8, black, mostly incomplete crossbands, uniformly white blind side, and black peritoneum. Of specimens examined, seven including the holotype, were collected on Kaikata Seamount off southern Japan; one specimen was collected at the Kasuga-2 hydrothermal vent, Marianas Islands; and six were collected at sites on the Kermadec Ridge. In addition to specimens captured, many other S. thermophilus were observed from submersibles and ROVs at hydrothermal sites in the western Pacific including those in the Marianas Islands, at Nikko Seamount near Minami-Iohjima Island, and at Minami-Ensei Knoll, Mid-Okinawa Trough. Many of the specimens examined have skeletal anomalies including fused bones in the caudal skeleton, and missing or partially developed and/or misshapen fin rays.

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