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A study on resource utilization and management of chub mackerel, Scomber japonicus consider to proximate composition

영양성분을 고려한 고등어, Scomber japonicus 자원 이용과 관리 방안

  • OH, Taeg-Yun (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • SHIM, Kil-Bo (Food Safety and Processing Research Division, National Institute of Fisheries Science) ;
  • SEO, Young-Il (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • KWON, Dae-Hyun (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • KANG, Su-kyung (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • LIM, Chi-Won (Food Safety and Processing Research Division, National Institute of Fisheries Science)
  • 오택윤 (국립수산과학원 연근해자원과) ;
  • 심길보 (국립수산과학원 식품위생가공과) ;
  • 서영일 (국립수산과학원 연근해자원과) ;
  • 권대현 (국립수산과학원 연근해자원과) ;
  • 강수경 (국립수산과학원 연근해자원과) ;
  • 임치원 (국립수산과학원 식품위생가공과)
  • Received : 2016.02.05
  • Accepted : 2016.04.22
  • Published : 2016.05.31

Abstract

This study analyzed annual catch trend during 45 years and monthly catch of the least 10 years (2005~2014) for chub mackerel caught in the Korean coastal waters. To determine fishing status of chub mackerel, fork length measurements were conducted at least twice every week for 100 individuals randomly selected at the Busan Cooperative Fish Market from January of 2012 to December of 2014; and biological characteristics and proximate composition (moisture, protein, fat, ash) were analyzed by length class (I~IV) on a monthly basis from January to December of 2014. Monthly catch trend showed low level below 5,000 mt from February to July, whereas high level above 15,000 mt from October to December. For the period between 2012 and 2014, annual average catch proportion of juvenile were relatively high at 68.1%, 53.1% and 53.2% from January to April, before spawning season, while those were low at 21.5%, 20.7% and 29.12% from June to November. As for the change in the proximate composition per 100 g of muscle, protein and ash did not change much by seasons and length class, whereas fat and moisture contents showed large fluctuations and complementary relationship between the two factors. Regardless of length class, monthly average fat content, containing Omega-3, showed the lowest at 7.18 g in April and highest at 19.27 g in December, which exhibited 2.6 times difference from one another. Regardless of fishing seasons, fat content by length class were 19.06 g for the class I and 6.43 g for the class IV, which showed three times difference. Fat contents of the class I were high at 26.97 g and 27.19 g in November and December, while low at 8.37 g and 9.99 g in April and May. Especially, fat contents from January to May were 5.0 g, which was the lowest. Therefore, it is expected that consumer could indirectly contribute fisheries management through their understanding and wise consumption based on fishing status and fluctuation of proximate composition.

Keywords

Chub mackerel;Proximate Composition;Resource Management

Acknowledgement

Grant : 연근해어업 자원평가 및 관리연구

Supported by : 국립수산과학원

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