ISSN : 1225-3480
본 연구에서는 제주도산 소라의 자원생태학적 특성치인 생잔율, 순간자연사망계수 및 순간어획사망계수, 어획개시연령을추정하였으며, 직접 조사를 통한 자원량을 확인하였다. 생태학적 특성치 추정을 위한 표본은 2009년 9월부터 2010년 5월까지의 자료를 활용하였다. 순간전사망계수는 2.2062 /year로추정되었으며, 순간자연사망계수는 0.8743/year로 추정되었다. 어구가입연령은 2.636 세로 추정되었다. 소라 자원을 가입당어획량 모델에 적용시킨 결과, 현재의 순간어획사망계수, 어획개시연령에서의 가입당생산량은 7.92 g으로 추정되었다. 따라서 현재의 순간어획사망계수를 그대로 유지한다면 어획개시연령을 2세에 맞추어야 하고, 현재의 어획개시연령을 유지한다면 순간어획사망계수를 0.2보다 낮은 수준으로 낮추어야 한다. F0.1의 경우, 1세에서 2.58 g으로 가장 높은 가입당생산량을 나타내고 있다. 또한 가입당산란자원량 모델을 이용하여 생물학적 관리기준인 F40%의 값을 현재의 어획상태를 고려하여추정하였다. Fmax, F0.1, F35%, 및 F40% 에서의 가입당생산량은10.44 g, 1.87 g, 6.53 g and 7.46 g으로 추정되었다.
Samples of Turbo (Batillus) cornutus Lightfoot, 1786 in Jeju Island were collected from September 2009 to May 2010. Population ecological parameters and stock assessment of the turban shell were determined, based on the length and age composition data from 2000 to 2009 and ecological parameters. Instantaneous coefficient of total mortality (Z) of turban shell was estimated to be 2.2062/year. The estimated instantaneous coefficient of natural mortality (M) was 0.874/year. The age of turban shell at its first capture (tc) was 2.636 year. Yield-per-recruit were estimated under harvest strategies that based on Fmax, F0.1, F35%, and F40% was 10.44 g, 1.87 g, 6.53 g and 7.46 g.
Alverson, D.L. and Carney, M.J. (1975) A graphic review of the growth and decay of population cohorts. Journal de Conseil International pour I'Exploration de la Mer, 36(2): 133-143.
Beverton, R.J.H and Holt, S.J. (1957) On the dynamics of exploited fish populations. Fishery Investigations, Series Ⅱ, Marine Fisheries, Great Britain Ministry of Agriculture, Fisheries and Food, 19(2): 1-533.
Chang, D.S. (2002) Studies on the stock assessment and management of the turban shell, Batillus cornutus in Jeju coastal waters, Korea. Doctor thesis. Department of Marine Biology Graduate School, Jeju National University, 94p. [in Korean].
Chang, D.S. and Chung, S.C. (2001) Shell growth pattern of the top shell, Batillus cornutus in the coastal Jeju Island. Journal of Korean Society of Fisheries Resources., 3: 9-15 [in Korean].
Chang, D.S., Chung, S.C., Lee, D.W., Ha, D.S. and Kim, D.G. (1999) Recruitment charactersitics and stock assessment of topshell, Batillus cornutus in Jeju Island. Bulletin of National Fisheries Research Development Institute of Korea, 57: 27-34 [in Korean].
Chang, D.S., Park, Y.C. and Chung, S.C. (2002) Stock Assessment of the top shell, Batillus cornutus in Jeju Island. Bulletin of National Fisheries Research Development Institute of Korea, 61: 22-33 [in Korean].
Chapman, D.G. and Robson, D.S. (1960) The analysis of catch curve. Biometrics, 16: 354-368.
Chung, S.C. (1983) A study on the growth of Jeju Island's turban shell, Turbo cornutus. Bulletin of Marine Resources Research Institute of Jeju University, 7: 71-75 [in Korean].
Edser, T. (1908) Note on the number of plaice at each length in certain samples from the southern part of the North Sea, 1906. Journal of the Royal Statistical Society, 71: 686-690.
Heincke, F. (1913) Investigations on the plaice. General report. I. Plaice fishery and protective measures. Preliminary brief summary of the most important points of the report. Rapports P.-V. Réunion de Conseil International pour I'Exploratin de la Mer, 16: 1-67.
Hwang, H.J. and Chung, K.O. (1979) A Study on the growth of the top shell, Turbo cornutus (Solander). Bulletin of Fisheries Research and Development Agency, 22: 45-53 [in Korean].
Jackson, C.H.N. (1939) The analysis of an animal population. Journal of Animal Ecology, 8: 238-246.
Lee, J.J. (1983) Histological Study on the Reproductive Cycle of Jeju Island's turban shell Batillus cornutus. Bulletin of Marine Resources Research Institute of Jeju University, 7: 29-51.
Lee, J.J. (1984) The Fine Structure of Differentiating Spermatozoa in the Turban Shell, Turbo cornutus. Bulletin of Marine Resources Research Institute of Jeju University, 8, 53-64 [in Korean].
Lee, J.J. and J.Y. Lee. (1979) Calorific Content Change in the Gonad and Meat of Turbo cornutus Sorander. Bulletin of Marine Resources Research Institute of Jeju University, 3: 17-22 [in Korean].
Lee, J.J. and K.W. Lee. (1984) On the Growth of Releaseed Turban Shell, Turbo cornutus and Environents of its Habit. Bulletin of Marine Resources Research Institute of Jeju University, 8, 31-40 [in Korean].
NFRDI. (1999) Commercial Molluscs from the Freshwater and Continental Shelf in Korea, Koodeuk Press, p. 192. [in Korean].
Pauly, D. (1984) Length-converted catch curves. A powerful tool for fisheries research in the tropics (Part Ⅱ). ICLARM Fishbyte, 2, 9-10.
Ricker, W.E. (1975) Computation and interpretation of biological statistics of fish populations. Bulletin of Fisheries Research Board of Canada, 191: 382 pp.
Rho, Y.G. (1974) Studies on the seedlings production of the top shell, Turbo cornutus Solander. Bulletin of National Fisheries Research Development Agency of Korea, 22: 42-65 [in Korean].
Yoo, J.S. (1995) Korean shells in colour. ILJISA, Seoul. p. 196. [in Korean].
Yoo, J.T., H.S. Sohn, Y.J. Lim, Y.M. Choi, and D.S. Chang. (2009). Jeju coastal fisheries, survey of fisheries resources. 2008 Technical Report of National Fisheries Research & Development Institute (Fisheries Resource), 127-156. [in Korean].
Zhang, C.I., Lee, J.B. and Baik, C.I. (2000) A study on the stock assessment methods incorporating ocean environment factors. Journal of Korean Society of Fisheries Resources, 3: 16-28. [in Korean].
