东海中华管鞭虾种群动态及持续渔获量分析

中华管鞭虾为东海区桁杆拖虾和沿岸定置张网作业重要的渔获对象。本文根据2006-2008年桁杆拖虾监测调查数据整理的各月体长频率数据,应用FiSATⅡ软件分析结果表明：Von Bertalanff生长方程的参数K=1.2,极限体长L∞=112.88mm,t0=0.267;根据Pauly经验公式估算的自然死亡系数M=2.03606;由变换体长渔获曲线法估算的总死亡系数Z=4.71,利用率E=56.77%,开捕体长Lc=65.32mm;应用体长VPA方法估算的年平均资源量为47.74×10^9ind、2.58×10^4t。通过单位补充量产量、产值分析表明,该群体利用合理,开捕体长亦处最佳位置,若降低10%左右的捕捞努力量水平,既能使产值最大化（4.92亿元）,又能实现中华管鞭虾的可持续利用。

Population Dynamics and Estimation of Sustainable Yield for Solenocera crassicornis in the East China Sea

Based on the monthly length - frequency data of Solenocera crassiconis obtained during 2006 - 2008 in the East China Sea, by applying the FiSAT H （ Version 1.2. 2） and the result showed that the growth parameters of Von Bertalanffy growth equation was K = 1.2, L∞ = 112. 88mm, tO =0. 267; Natural MoRality Coefficient （M） was 2. 03606 from Pauly equation according to growth parameters and average water temperature; Total Mortality Coefficient （Z） was 4. 71 that got from length - converted catch curve with biology datum; Fishing Mortality Coefficient （F） was 2. 674 and exploitation rate （E） was 56. 77% ; The Steady - state Biomass was 47.74 × 10^9ind or 2. 58 × 10^4t by using Length - Structured Virtual Population Analysis. Yield - per - recruit analysis and the value of yield - per - recruit analysis applying Beverton - Holt and Thompson - Bell model indicated that the stock resource of Solenocera crassicornis had been rational exploited, and the mean length of shrimp at first capture （Lc） is the best. If the factor can fell by 10%, then we can get the most value to achieve the sustainable use of Solenocera crassicornis.