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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Entering behavior and fishing capacity on pot for Octopus minor by mesh size

통발의 그물코 크기 변화에 따른 낙지의 입망 행동과 어획 성능

  • KWON, Inyeong (Smart Aquaculture Research Center, Chonnam National University) ;
  • KIM, Taeho (Department of Marine Production Management, Chonnam National University)
  • 권인영 (전남대학교 스마트수산양식연구센터) ;
  • 김태호 (전남대학교 해양생산관리학과)
  • Received : 2021.08.02
  • Accepted : 2021.08.25
  • Published : 2021.08.31
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Abstract

This study was conducted to evaluate the performance of the octopus pot according to mesh sizes. Entering behavior of Octopus minor and bait (Macrophthalmus japonicus) escape rate on the mesh sizes of the pots were investigated for six times in indoor tank. The sea trials for evaluating the performance of Octopus minor pot to different mesh sizes (22, 20 and 18 mm) were conducted for six times from 2017 to 2018 in the coastal sea of Deukyang Bay, the Republic of Korea. Behavior patterns of contact pot to leaved pot were more frequent than contact pot to bait search. When the octopus contacted to the pot, there was no clear search behavior to distinguish the mesh sizes. Total catch of 46% was accounted for 18 mm pots, followed by 34% at 20 mm and 20% at 22 mm (P < 0.05). Catch per unit effort was calculated as 30 g/pot at 22 mm, 44 g/pot at 20 mm and 59 g/pot at 18 mm. As a result of evaluating 50% selection of mantle length and weight on the mesh sizes, mantle length (mm) and weight (g) were 84.6 and 147.8 in 22 mm, followed by 20 and 18 mm.

Keywords

Acknowledgement

이 연구는 보성군(낙지 통발 그물코 규격 완화 조사용역)의 지원에 의해 수행되었으며, 해상 어획 자료의 분석에 도움을 주신 부경대학교 김성훈 교수님께 감사드립니다.

References

  1. An HC, Bae JH, Park CD, Park JM, Hong SE, Yoon BS, Kim P and Kim SH. 2017. Catching efficiency of the whelk pot in accordance with the pot materials in the Uljin waters, East sea. J Korean Soc Fish Ocean Technol 53, 1-11. https://doi.org/10.3796/KSFT.2017.53.1.001.
  2. An HC, Lee KH, Park SW, Park CD and Shin JK. 2007. Assessment of fishing power of common octopus (Octopus minor) trap fishery. J Korean Soc Fish Ocean Technol 43, 176-182. https://doi.org/10.3796/KSFT.2007.43.3.176.
  3. Chang DJ and Kim DA. 2003. Characteristics by the behaviour and habits of the common octopus (Octopus minor). Fish Aquat Sci 36, 735-742. https://doi.org/10.5657/kfas.2003.36.6.735.
  4. Jeong EC, Park CD, Park SW, Lee JH, and Tokai T. 2000. Size selectivity of trap for male red queen crab Chionoecetes japonicus with the extended SELECT model. Fish Sci 66, 494-501. https://doi.org/10.1046/j.1444-2906.2000.00079.x.
  5. Kim DH, An HC, Lee KH and Hwang JW. 2007. Fishing capacity assessment of the octopus coastal trap fishery using data envelopment analysis (DEA). J Korean Soc Fish Ocean Technol 43, 339-346. https://doi.org/10.3796/KSFT.2007.43.4.339.
  6. Kim DS and Kim JM. 2006. Sexual maturity and growth characteristics of Octopus minor. Fish Aquat Sci 39, 410-418. https://doi.org/10.5657/kfas.2006.39.5.410.
  7. Kim S, Park S and Lee K. 2013. Size selectivity of the net pot for common octopus Octopus minor used in the southern coastal sea of Korea. Korean Soc Fish Ocean Technol 49, 200-207. https://doi.org/10.3796/KSFT. 2012. 49.3.200.
  8. Kim SH, Lee KH, Park SW and Lee DG. 2015. Study on the fishing performance of an alternative tubular-type pot for the common octopus, Octopus minor, in Korean coastal waters. Iran J Fish Sci 14, 73-86.
  9. KOSIS (Korean Statistical Information Service). 2021. Investigation of fishery production trend. Retrieved from http://www.kostat.go.kr. Accessed 10 May 2021.
  10. MOF (Ministry of Oceans and Fisheries). 2006. Development of Fishing Gear and Method for Small-sized Common Octopus, Octopus minor. 1-216.
  11. Nishiuchi S. 2003. A study on size-selectivity of hair crab pots. Sci Rep Hokkaido Fish Exp Stn 64, 1-103.
  12. Park CD, Bae JH, Cho SK and Kim IO. 2014. Mesh selectivity of a dome-shaped pot for finely-striate buccinum Buccinum striatissimum in the eastern coastal waters of Korea. J Korean Soc Fish Ocean Technol 50, 284-291. https://doi.org/10.3796/KSFT.2014.50.3.284.
  13. Park CD, Cho SK, Bae JH, Kim HY and Cha BJ. 2015. Size selectivity of a dome-shaped pot for Morotoge shrimp Pandalopsis japonica in the eastern coastal waters of Korea. J Korean Soc Fish Ocean Technol 51, 396-404. https://doi.org/10.3796/KSFT.2015.51.3.396.
  14. Park HH, Jeong EC, Bae BS, Yang JH, Chol SH and Lee SI. 2007. Mesh selectivity of gill net for female Japanese sandfish (Arctoscopus japonicus) in spawning season. J Korean Soc Fish Ocean Technol 43, 274-280. https://doi.org/10.3796/KSFT.2007.43.4.274.
  15. Park SW, Kim HY and Cho SK. 2006. Entering behavior and fishing efficiency of common octopus, Octopus minor to cylindric trap. J Korean Soc Fish Ocean Technol 42, 11-18. https://doi.org/10.3796/KSFT.2006.42.1.011.
  16. Shin JK, Cha BJ, Park HH, Cho SK, Kim HY, Jeong EC, Kim YH and Kim BY. 2008. Comparison of fishing efficiency on octopus traps to reduce bycatch in the East Sea. J Korean Soc Fish Ocean Technol 44, 1-9. https://doi.org/10.3796/KSFT.2008.44.1.001.
  17. Siminilbo. 2019. Retrieved from https://www.siminilbo.co.kr/news/articleView.html?idxno=606126. Accessed 10 May 2021.
  18. Song DH, Cho SK and Cha BJ. 2016. Fishing capacity and bycatch on spring net pot for conger eel by entrance size. J Korean Soc Fish Ocean Technol 52, 9-16. https://doi.org/10.3796/KSFT.2016.52.1.009.
  19. Uchida K, Tokai T, Mitsuhashi T, Fuxiang H, Matuda K. 2000. Size selectivity of net-pot for white-spotted conger eel estimated from paired-gear tests with change in sampling. Nippon Suisan Gakkaishi 66: 228-235. https://doi.org/10.2331/suisan.66.228
  20. UILO of CNU (University Industry Liaison Office of Chonnam National University). 2018. A study for relaxation of regulation about mesh size of octopus minor pot, 1-51.