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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Catch and cluster analysis according to net materials of gillnet for the Pacific herring in the coastal waters of Samcheok, Korea

삼척 연안 청어자망의 그물 재질에 따른 어획과 군집 분석

  • AN, Heui-Chun (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • BAE, Jae-Hyun (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • PARK, Jong-Myung (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • HONG, Sung-Eic (Bada Ecology Research) ;
  • KIM, Seong-Hun (Fisheries System Engineering Division, NFRDI) ;
  • PARK, Hae-Hoon (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI)
  • 안희춘 (동해수산연구소 해역산업과) ;
  • 배재현 (동해수산연구소 해역산업과) ;
  • 박종명 (동해수산연구소 해역산업과) ;
  • 홍성익 (바다생태리서치) ;
  • 김성훈 (국립수산과학원 시스템공학과) ;
  • 박해훈 (동해수산연구소 해역산업과)
  • Received : 2015.07.07
  • Accepted : 2015.08.22
  • Published : 2015.08.31
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Abstract

Experiments for catch and cluster analysis on the catch by gillnet for the Pacific herring were conducted using traditional nylon net (PA) and developing biodegradable net (PBS) with different monofilaments of #2 (=0.23 mm) and #3 (=0.28 mm) in diameter between 2011 and 2012, and of #2, #2.5 and #3 in 2013 in the eastern coastal waters of Samcheok, Korea. The total catch during the experiments was 3,337kg in weight and 16,757 individuals in number. Though the catch ratio of the Pacific herring in 2011 and 2012 was 97.4% and 98.7%, respectively, that of the Pacific herring in 2013 was 73.6% as the biggest and followed by goldeye rockfish (8.6%), black edged sculpin (8.4%), atka mackerel (7.2%) and Alaska cod (1.0%). The ANOVA analysis on the total catch in relation to net material showed that there was not statistically significant difference at the 5% level between nylon net (PA) and biodegradable net (PBS) (p=0.91). With the cluster analysis on the catch in relation to net material (PA, PBS) and twine thick (#2, #3), it showed the influence of net material on the catch was greater than that of twine diameter in this experiment. From the test of homogeneity on the catch by the gillnet with PA and PBS in which several species were caught in 2013, there was not statistically significant homogeneity in relation to net material (p<0.005). That meant the traditional gillnet of nylon (PA) was more efficient than the biodegradable (PBS) gillnet to catch several kinds of fish, however the PBS gillnet was better than the PA gillnet to catch the target Pacific herring.

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References

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