Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Distribution and Characteristic of Transport Mechanism of Eggs and Larvae of Anchovy, Engraulis japonica, in the Southwestern Sea of Korea in July and November, 2001

2001년 7월과 11월의 한국남해 서부해역에서의 멸치(Anchovy, Engraulis Japonica) 어란과 자 · 치어의 분포 및 수송 특성

  • KIM Sang-Hyun (Marine and Environmental Research Institute, Cheju National University) ;
  • PANG Ig-Chan (College of Ocean Science, Cheju National University)
  • 김상현 (제주대학교 해양과환경연구소) ;
  • 방익찬 (제주대학교 해양과학대학)
  • Published : 2005.10.01
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Abstract

Distribution of anchovy (Engraulis japonica) eggs and larvae was studied in the southwestern sea of Korea in July and November, 2001. Anchovy eggs were found mainly in the oceanic fronts of the northern sea area which were formed in the offshore area of Chuja Is. Bogil Is. and Chungsan Is. from west to east. Anchovy eggs were also found in the surrounding sea of Cheju Is. in the southern sea front area. The waters were highly heterogeneous and the water masses were bordered based on temperature $(10.8-26.4^{\circ}C)$ and salinity (28.9-33.7 psu). The anchovy eggs were mostly found outside of the China Coastal Water, where salinity was below 31 psu. The anchovy eggs were not found in November. Abundance of the anchovy larvae were higher in July than November. Temperature ranged from $10.8^{\circ}C\;to\;25.9^{\circ}C\;and\;15.9^{\circ}C\;to\;20.5^{\circ}C$, and salinity ranged from 28.9psu to 34.1psu and 33.2psu to 34.1psu in July and November, respectively. Non-swimmable larvae were found throughout the whole area of the southwestern sea of Korea. The area beyond the oceanic front had anchovy eggs dispersed from the spawning grounds to offshore. Dispersion pattern showed that the eggs were transported from the spawning grounds with a process of advection and diffusion based on the flow pattern which were caused by winds. Distribution pattern of the anchovy eggs and larvae may be used for the prediction of oceanic currents in each area.

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References

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