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Article

Dispersal Characteristics and Pathways of Japanese Glass Eel in the East Asian Continental Shelf

1
Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei 10617, Taiwan
2
Graduate School of Frontier Sciences, Atmosphere and Ocean Research Institute, University of Tokyo, Chiba 277-8564, Japan
3
Institute of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China
4
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
5
Department of Biology, Tokyo Medical University, Shinjuku, Tokyo 160-8402, Japan
6
School of Marine Biosciences, Kitasato University, Kanagawa 252-0373, Japan
7
Jeju International Marine Science Research & Logistics Center, Korea Institute of Ocean Science & Technology, Jeju 63349, Korea
8
Korea Fisheries Resources Agency, Gunsan 54021, Korea
9
Institute of Earth Sciences, Academia Sinica, Taipei 11529, Taiwan
*
Authors to whom correspondence should be addressed.
Co-First authors. Tel.: +886-15721576334 (K.-M.H.)
Sustainability 2019, 11(9), 2572; https://doi.org/10.3390/su11092572
Received: 12 March 2019 / Revised: 19 April 2019 / Accepted: 24 April 2019 / Published: 4 May 2019
The Japanese eel Anguilla japonica is an important aquaculture fish species in the East Asian countries of Japan, China, Korea, and Taiwan. All glass eel fry are captured from the wild and understanding the recruitment patterns of the glass eel is important. The larvae of A. japonica are passively transported to the East Asian Continental Shelf by the North Equatorial Current, the Kuroshio, the Kuroshio intrusion currents, and coastal currents. In each location, recruitment time is diverse: It is November in Taiwan and April in the Yalu River. How the glass eels reach recruitment areas remains poorly understood. Here, we combine information from larval ages based on otolith increments, simulated drifting paths on the East Asian Continental Shelf, and main fishing seasons in each location of East Asia. We identify five main recruitment blocks: (1) The main Kuroshio, (2) The Taiwan Strait Warm Current, (3) The Taiwan Warm Current, (4) The Yellow Sea Warm Current and (5) The branch of Yellow Sea Warm Current. The counted age of the glass eels is significantly underestimated for the later recruits, possibly due to the cessation of the otolith edge growth under low water temperatures. This study clarifies the eel’s larval characteristics and transport mechanisms in the East Asia Continental Shelf, providing important information for its recruitment dynamics in the marine stage. View Full-Text
Keywords: Anguilla japonica; leptocephalus; glass eel; Kuroshio; North Equatorial Current (NEC); otolith daily increments Anguilla japonica; leptocephalus; glass eel; Kuroshio; North Equatorial Current (NEC); otolith daily increments
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MDPI and ACS Style

Han, Y.-S.; Hsiung, K.-M.; Zhang, H.; Chow, L.-Y.; Tzeng, W.-N.; Shinoda, A.; Yoshinaga, T.; Hur, S.-P.; Hwang, S.-D.; Iizuka, Y.; Kimura, S. Dispersal Characteristics and Pathways of Japanese Glass Eel in the East Asian Continental Shelf. Sustainability 2019, 11, 2572. https://doi.org/10.3390/su11092572

AMA Style

Han Y-S, Hsiung K-M, Zhang H, Chow L-Y, Tzeng W-N, Shinoda A, Yoshinaga T, Hur S-P, Hwang S-D, Iizuka Y, Kimura S. Dispersal Characteristics and Pathways of Japanese Glass Eel in the East Asian Continental Shelf. Sustainability. 2019; 11(9):2572. https://doi.org/10.3390/su11092572

Chicago/Turabian Style

Han, Yu-San, Kuan-Mei Hsiung, Heng Zhang, Lai-Yin Chow, Wann-Nian Tzeng, Akira Shinoda, Tatsuki Yoshinaga, Sung-Pyo Hur, Sun-Do Hwang, Yoshiyuki Iizuka, and Shingo Kimura. 2019. "Dispersal Characteristics and Pathways of Japanese Glass Eel in the East Asian Continental Shelf" Sustainability 11, no. 9: 2572. https://doi.org/10.3390/su11092572

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