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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
권호 표지
DOI QR코드

DOI QR Code

Stock assessment of elkhorn sculpin (Alcichthys alcicornis) along the Uljin area in the East Sea of Korea

  • Received : 2013.11.11
  • Accepted : 2013.11.15
  • Published : 2013.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study was performed to assess the current stock condition of elkhorn sculpin along the Uljin area in the East Sea of Korea. To assess the state of the stock, yield-per-recruit (YPR) and spawning biomass-perrecruit (SBPR) analyses were performed. Estimates of $F_{max}$ and $F_{0.1}$ were 2.10/year and 0.48/year, respectively, and those of $F_{35%}$ and $F_{40%}$ were 0.66/year and 0.54/year, respectively. Current fishing mortality was estimated at 0.63/year and the current age at first capture was 2.41years. $F_{40%}$ was set as the target reference point of the stock. SBPR at $F_{40%}$ and current SBPR were estimated to be 41.85g and 37.77g, respectively. Estimated FOTY which is the fishing mortality for the overfished threshold yield was 0.49/year. The ratio of SBPR/$SBPR_{MSY}$ was calculated as 0.90 and that of $F/F_{OTY}$ was 1.05. The ratio of $t_c/t_{c\;opt}$ was calculated as 1.15 and that of $F/F_{OTY}$ was 1.17. Therefore, the current stock condition of elkhorn sculpin along the Uljin area of Korea has not been overfished, however, it indicates that a light overfishing is going on this stock.

Keywords

References

  1. Beverton RJH and Holt SJ. 1957. On the dynamics of exploited fish populations. Fishery investigations, Series II, Marine Fisheries, Great Britain Ministry of Agriculture, Fisheries and Food 19,1-533.
  2. FAO (Food and Agriculture Organization). 1995. Code of conduct for responsible fisheries. FAO, Rome, 1-41.
  3. Haddon M, Ziegler P, Lyle J, Burch P. 2005. Using a spatially structured model to access the Tasmanian fishery for banded morwong (Cheilodacthlus spectabilis) In: G.H. Kruse, V.F. Gallucci, D.E. Hay, R.I. Perry, R.M. Peterman, T.C. Shirley, P.D. Spencer, B. Wilson, and D. Woodby (eds) Fisheries assessment and management in data-limited situations. Alaska Sea Grant College Program, University of Alaska Fairbanks, 737-756.
  4. Lee SJ. 2011. Stock assessment of elkhorn sculpin (Alcichthys alcicornis) along the Uljin area of Korea. Thesis of Master's degree, Pukyong National University, 1-53.
  5. Maunder MN and Aires-da-Silva A. 2011. Evaluation of the Kobe plot and strategy matrix and their application to tuna in the EPO.IATTC.DOCUMENT SAC-02-11, 1-14.
  6. Munehara H. 1988. Spawning and subsequent copulating behavior of the elkhorn sculpin Alcichthys alcicornis in an aquarium. Jap J Ichthyol 35, 358-364.
  7. NFRDI (National Fisheries Research and Development Institute). 2004. Commercial fishes of the coastal and offshore waters in Korea. 2nd. ed. Hangul Press, Busan, 1-333.
  8. Panchenko VV. 2002. Age and growth of Sculpins of the Genus Myoxocephalus (Cottidae) in Peter the Great Bay (the Sea of Japan). J Ichthyol 42, 516-522.
  9. Panchenko VV. 2010. Age and growth of far eastern staghorn sculpin Gymnocanthus herzensteini (Cottidae) in Peter the Great Bay (the Sea of Japan). J Ichthyol 50, 295-300. https://doi.org/10.1134/S0032945210040028
  10. Park KY, Park KH, Lee SI, Park HW, Hong SE, Yang JH and Choi SH. 2007. Maturity and spawning of black edged sculpin, Gymnocanthus herzensteini in the East Sea. Kor J Ichthyol 19, 101-106.
  11. Park HH, Jeong EC, An HC, Park CD, Kim HY, Bae JH, Cho SK and Baik CI. 2004. Mesh selectivity of drum net fish trap for elkhorn sculpin (Alcichthys alcicornis) in the eastern sea of Korea. Bull Kor Soc Fish Tech 40, 247-254. https://doi.org/10.3796/KSFT.2004.40.4.247
  12. Shelekhov VA and Panchenko VV. 2007. Age and growth of threaded sculpin Gymnocanthus pistilliger (Cottidae) in the southern Primorye (Sea of Japan). J Ichthyol 47, 175-183. https://doi.org/10.1134/S0032945207020051
  13. TenBrink TT and Aydin KY. 2009. Life history traits of sculpins in the eastern Bering Sea and Aleutian Islands. North Pacific Research Board Project 628 final report, 1-215.