open access
메뉴
open access
메뉴
ISSN : 1225-3480
본 연구에서는 남해안 개조개의 자원생태학적 특성치인 생잔율(S=0.5174), 순간자연사망계수(M=0.2012/년) 및 순간어획사망계수(F=0.4578/년), 어획개시연령(tc＝2.7506세), 자원량(B=8.362톤)을 추정하였다. 갯장어 자원을 가입당생산량모델에 적용시킨 결과, 현재의 순간어획사망계수(F=0.4578/년), 어획개시연령(tc＝2.7506세)에서의 가입당생산량은 80.89g으로 추정되었다. 따라서 현재의 순간어획사망계수(F)를 그대로 유지한다면 어획개시연령(tc)을 4세 이상으로 높여야 하고, 현재의 어획개시연령(tc)을 유지한다면 순간어획사망계수(F)를 0.2 보다 낮은 수준으로 낮추어야한다. F0.1의 경우, 2세에서 65.69g으로 가장 높은 가입당생산량을 나타내고 있다. 또한 가입당산란자원량모델을 이용하여 생물학적 관리기준인 F40%의 값을 현재의 어획상태를 고려하여 추정하였다.
Population ecological parameters, including survival rate, instantaneous coefficient of nature and fishing mortalities, and age at first capture, and stock assessment of the purplish Washington clam, Saxidomus purpuratus (Sowerby) in the southern coastal waters of Korea were determined, based on fishery data from the Divers Fisheries Cooperatives and available biological data. Annual survival rate (S) was determined to be 0.5174, and the estimated instantaneous coefficients of Fishing mortality (F) was 0.4578/year. From the estimates of S and F, the instantaneous coefficients of nature mortality (M) was calculated as 0.2012/year. The age at first capture (tc) was estimated as 2.7506 year. An yield-per-recruit analysis showed that the current yield per recruit of 80.89g with F=0.4578/year, where the age at first capture (tc) is 2.7506. This age at first capture corresponded to the optimal length which was obtained from the F0.1 method. Yield- per-recruit and spawning biomass-per-recruit were estimated under various harvest strategies based on Fmax, F0.1, F30%, F35% and F40%. And also the acceptable biological catch (ABC) was estimated to about 1,230 mt.
(2001) Annual reproductive cycle of Saxidomus purpuratus, MS Thesis
(1984) Simple methods for estimation of parameters for assessing exploited fish stocks. Indian J. Fish. 31,
(1957) On the dynamics of exploited fish populations. Fishery investigations Great Britain Ministry of Agriculture,
(1960) The analysis of catch curve. Biometrics,
(1999) Ultrastructure of germ cell evelopment and reproductive cycle of the purplish Washington clam, The Yellow Sea
(1994) Histological and ultrastructural studies on gonadal development and germ cell development of the purplish Washington clam, . Bull. Coastal Res. Kunsan Nat'l Univ. 6
(1913) Investigations on the plaice. General report. I. Plaice fishery and protective measures. Preliminary brief summary of the most important points of the report. Rapp. P. - V. Reun. Cons. Perm. int. Explor. Mer.,
(1939) . The analysis of an animal population. J. Anim. Ecol.,
(1992) Freeze denaturalization of squid and butter clam actomyosin. MS Thesis,
(1969) Studies on the gametogenesis and bree-ding season of Saxidomus purpuratus,
(1971) Ecological studies on the propagation of Saxidomus purpuratus,
(2001) Studies on the Ecological Aspect and Gametogensis of Saxidomus purpuratus, Nat'l. Fish. Res.
(2003) Age and growth of purplish Washington clam, J. Kor. Fish. Soc.
(2006) Morphological analysis among populations of purpulish washington clam , Malacol
(2004) Mollusks in Korea,
(2006) Stock Assessment and Fishery Evaluation Report of Year 2007 TAC-based Fisheries Management in the Adjacent Korean Waters , Yaemoonsa
(1998) Taste compounds and reappearance of functional flavoring substances from low-utilized shellfishes,
(1975) Computation and interpretation of biological statistics of fish populations. Bull. Fish. Res. Board Can.,
(1982) A preliminary survey on the biology of Saxidomus purpurarus. J. Fish. China,
(2000) A study on the stock assessment Methods incorporating ocean environment factors., J. Korean Soc. Fish. Res.
(1999) Estimation of population ecological charateristic of sunset shell , J. Korean Soc. Fish. Res.
(2004) A population ecological study of purplish washington clam , J. Korean Soc. Fish. Res
(1996) ワチムラサキガイ, Saxidomus purpuratus 幼稚貝の人工飼育下における形態的特徵,
(1996) ワチムラサキガイの成熟度調査-I,