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Dispersal Characteristics and Pathways of Japanese Glass Eel in the East Asian Continental Shelf
- Source :
- Sustainability, Vol 11, Iss 9, p 2572 (2019), Sustainability, Volume 11, Issue 9
- Publication Year :
- 2019
- Publisher :
- MDPI AG, 2019.
-
Abstract
- 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&rsquo<br />s larval characteristics and transport mechanisms in the East Asia Continental Shelf, providing important information for its recruitment dynamics in the marine stage.
- Subjects :
- leptocephalus
0106 biological sciences
animal structures
Leptocephalus
Geography, Planning and Development
Fishing
TJ807-830
Management, Monitoring, Policy and Law
TD194-195
010603 evolutionary biology
01 natural sciences
Renewable energy sources
Aquaculture
medicine
GE1-350
East Asia
Japanese eel
Otolith
Anguilla japonica
geography
geography.geographical_feature_category
Environmental effects of industries and plants
biology
Renewable Energy, Sustainability and the Environment
Continental shelf
business.industry
010604 marine biology & hydrobiology
glass eel
fungi
biology.organism_classification
otolith daily increments
Environmental sciences
Oceanography
medicine.anatomical_structure
Kuroshio
North Equatorial Current (NEC)
Biological dispersal
business
Subjects
Details
- ISSN :
- 20711050
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Sustainability
- Accession number :
- edsair.doi.dedup.....03a784325eab173b65620e1fba7100a2