Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Study on the size selectivity of a gillnet for Pacific herring (Clupea pallasii) in the eastern sea of Korea

동해안 청어 (Clupea pallasii) 자망의 망목선택성에 관한 연구

  • An, Heui-Chun (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Bae, Jae-Hyun (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Kim, Seonghun (Fisheries System Engineering Division, National Fisheries Research & Development Institute)
  • 안희춘 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 배재현 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 김성훈 (국립수산과학원 시스템공학과)
  • Received : 2013.10.04
  • Accepted : 2013.11.04
  • Published : 2013.11.30
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Abstract

The mesh selectivity of the gillnet for Pacific herring (Clupea pallasii) was examined in field experiments with four different mesh sizes (63, 69, 75 and 81mm) from June to July, 2013 in the coastal areas of Imwon in Gangwon province. The fishing performance tests were conducted with a commercial Pacific herring gillnet and a biodegradable gillnet for Pacific herring together selectivity tests. The filed tests were carried out the total 11 times. The master curve of selectivity was estimated by the extended Kitahara's method. In the results, the catch number of Pacific herring was 9,409 (2,203kg) and occupied 84.2% in total catches weight. The optimal mesh size for 50% retention on first maturity size (female, 250mm) of Pacific herring was estimated as 64.5mm by master selectivity curves. The fishing performance of the biodegradable gillnet was showed to be equivalent with commercial gill for Pacific herring.

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References

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