Variability of the Pacific North Equatorial Current and its implications on Japanese eel (Anguilla japonica ) larval migration

2016 ◽  
Vol 26 (3) ◽  
pp. 251-267 ◽  
Author(s):  
Ango C. Hsu ◽  
Huijie Xue ◽  
Fei Chai ◽  
Peng Xiu ◽  
Yu-San Han
Keyword(s):  
Anguilla Japonica ◽  
Japanese Eel ◽  
North Equatorial Current ◽  
Larval Migration ◽  
The Pacific ◽  
Equatorial Current

scholarly journals Effect of El Niño on migration and larval transport of the Japanese eel (Anguilla japonica)

2007 ◽  
Vol 64 (7) ◽  
pp. 1387-1395 ◽  
Author(s):  
Heeyong Kim ◽  
Shingo Kimura ◽  
Akira Shinoda ◽  
Takashi Kitagawa ◽  
Yoshikazu Sasai ◽  
...  
Keyword(s):  
El Niño ◽  
Western North Pacific ◽  
El Nino ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Larval Transport ◽  
North Equatorial Current ◽  
The North ◽  
Equatorial Current ◽  
The Kuroshio

Abstract Kim, H., Kimura, S., Shinoda, A., Kitagawa, T., Sasai, Y., and Sasaki, H. 2007. Effect of El Niño on migration and larval transport of the Japanese eel (Anguilla japonica). – ICES Journal of Marine Science, 64: –. To clarify the effect of an El Niño on the migration of Japanese eels (Anguilla japonica) in the western North Pacific, differences in migration patterns of eel larvae (leptocephali) in El Niño and non-El Niño years were compared qualitatively through a numerical particle-tracking model. Depending on interannual meridional displacements of the salinity front and bifurcation of the North Equatorial Current, transport of Japanese eel larvae to the Kuroshio was much less than to the Mindanao Current in an El Niño year, and recruitment to coastal habitats in Japan decreased in those years. In non-El Niño years, transport to the Kuroshio was twice as high, and recruitment to coastal habitats increased. If the spawning area of eels was independent of El Niño, transport differences between the two currents were not clear. In the western North Pacific, mesoscale eddies also played a significant role in dispersing eel larvae and prolonging their migration. Consequently, the changing oceanic conditions associated with climate change have resulted in decreased recruitment of Japanese eels, and the eddy effect on migration of the Japanese eel larvae needs to be added into the North Equatorial Current–Kuroshio system.

Spawning time and place of the Japanese eel Anguilla japonica in the North Equatorial Current of the western North Pacific Ocean

2001 ◽  
Vol 67 (6) ◽  
pp. 1097-1103 ◽  
Author(s):  
Satoshi Ishikawa, ◽  
Kunihiro Suzuki, ◽  
Tadashi Inagaki, ◽  
Shun Watanabe, ◽  
Yobuo Kimura, ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
North Pacific ◽  
Western North Pacific ◽  
North Pacific Ocean ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
North Equatorial Current ◽  
The North ◽  
Spawning Time ◽  
Equatorial Current

Eels at the Edge: Science, Status, and Conservation Concerns

2009 ◽  
Keyword(s):  
East Asia ◽  
Early Life History ◽  
Kuroshio Current ◽  
Japanese Eel ◽  
North Equatorial Current ◽  
Mariana Islands ◽  
The North ◽  
Management Plans ◽  
Equatorial Current ◽  
Glass Eels

Abstract.—The Japanese eel, Anguilla japonica, is an important food fish in East Asia, and catches of glass eels and of eels in freshwater appear to have declined dramatically in recent decades, causing increasing concern for the health of wild stocks. During that time, research efforts to understand its biology have progressed considerably. The spawning area was successfully outlined to the west of the Mariana Islands in 1991, and other research suggests that their recruitment success may be related to El Niño events, which appear to affect the transfer of leptocephali from the north equatorial current into the Kuroshio Current. Otolith microstructure and microchemistry studies have revealed various aspects of their early life history that relate to their oceanic larval migration. The discovery of sea eels that live in marine habitats without entering freshwater may change the common understanding of freshwater eel ecology and affect management plans. Most genetic studies suggest that the Japanese eel is composed of a single panmictic population throughout East Asia. Therefore, international management is needed among the countries of China, Taiwan, Korea, and Japan, where glass eels recruit from a common stock and are used extensively for aquaculture.

Long-term acoustic measurement of temperature variations in the Pacific North Equatorial Current

1996 ◽  
Vol 101 (C7) ◽  
pp. 16373-16380 ◽  
Author(s):  
Arata Kaneko ◽  
Hong Zheng ◽  
Iwao Nakano ◽  
Gang Yuan ◽  
Hidetoshi Fujimori ◽  
...  
Keyword(s):  
North Equatorial Current ◽  
Acoustic Measurement ◽  
Temperature Variations ◽  
The Pacific ◽  
Equatorial Current

scholarly journals The Pacific North Equatorial Current: New Insights from the Origins of the Kuroshio and Mindanao Currents (OKMC) Project

Oceanography ◽  
2015 ◽  
Vol 28 (4) ◽  
pp. 24-33 ◽  
Author(s):  
Bo Qiu ◽  
Daniel Rudnick ◽  
Ivana Cerovecki ◽  
Bruce Cornuelle ◽  
Shuiming Chen ◽  
...  
Keyword(s):  
North Equatorial Current ◽  
The Pacific ◽  
Equatorial Current ◽  
The Kuroshio
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