한국수산과학회

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  • pISSN : 2234-8395
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  • eISSN : 2234-1757

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kfas, vol. 50, no. 4, pp.437-446, August, 2017
DOI. https://doi.org/10.5657/KFAS.2017.0437

Simulation-based Yield-per-recruit Analysis of Pacific Anchovy Engraulis
japonicus
in the Korea Strait with Varying Fisheries Regulations
모의실험을 통한 남해 멸치(Engraulis japonicus)의 어획조건에 따른 가
입당 생산 분석

이경환·고성길·정석근*
제주대학교 해양생명과학과

To evaluate the consequences of possible fisheries regulations of anchovy Engraulis japonicus in the Korea Strait,
we developed and applied a simulation-based yield-per-recruit (Y/R) model that considered temperature-dependent
growth and size-dependent mortality, covering the egg to adult stages. We projected changes in commercial yield and
egg production of anchovy with respect to varying biological reference points of 1) the instantaneous fishing mortality,
2) the minimum fork length of anchovy allowed to catch for protecting smaller anchovy (Lc,min), and 3) the maximum
fork length allowed to catch for protecting bigger anchovy (Lc,max). Our Y/R model showed that the anchovy
yield will be maximized at ca. 1.4×106 tons when Lc,min ranges between 42-60 mm or at ca. 0.8×106 tons when Lc,max
ranges from 88-160 mm. At Lc,min=30 mm, the present minimum length of catch, our simulations indicated that the
anchovy yield can reach a maximum of 1.2×106 tons in the long-term when the present fishing effort, which annually
yields ca. 0.2×106 tons of anchovy, can be increased by a factor of 28. We expect that our simulation-based Y/R
model can be applied to other commercially-important small pelagic species in which the traditional Beverton-Holt
Y/R model is difficult to apply.

Keyword : Pacific anchovy, Engraulis japonicus, Yield-per-recruit analysis, Stock assessment

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