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項次 書目
1
題名:Growth, Mortality and Yield-per-Recruit of Kuruma Shrimp(Penaeus japonicus) from Adjacent Waters off Taichung Harbor    
台中港附近海域產斑節蝦之成長參數、死亡率及單位加入產量之估計
著者:Tzong-Der Tzeng(曾宗德) ;Shean-Ya Yeh(葉顯椏)
出版地區:台灣
出版城市:台北市
學科:地球科學
關鍵字:斑節蝦 ; 體長頻度 ; Length frequency ; kuruma shrimp ; MULTI FAN ; ELEFAN
刊名:ACTA Oceanographica Taiwanica
卷期:37卷2期(1998.9)
頁碼:187-200
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

利用MULTIFAN及ELEFAN法同時分析多個體長頻度樣本,以估計台中港附近海域產斑節蝦(Penaeus japonicus)之成長參數、死亡率及單位加入產量。從1992年2月至1993年1月間,按月別自海域作業之蝦衍拖網漁船上直接採集標本,共收集10組體長頻度樣本。 分析之結果顯示如下:(1)雌蝦的成長較雄蝦快,雄蝦之成長參數為k=0.19(1/年)、極限頭胸長L=77(mm)、C=0.95和ts=0.07,而雌蝦為k=0.23(1/年)、L=86.7(mm)、C=0.95和ts=-0.07;(2)雄蝦與雌蝦具有相同之全死亡率,其值為1.3(1/年);(3)自然死亡率之估計值,雌蝦為0.67(1/年),雄蝦為0.58(1/年);(4)漁獲死亡率雌蝦為0.63(1/年),雄蝦為0.72(1/年);(5)分析單位加入產量顯示,增加最初漁獲體長,可提高產量值;增加漁獲努力量雖亦可提高產量,但增加有限且可能不符合經濟效益。
A series of length-frequency distributions of kuruma shrimp, Penaeus japonicus, from the adjacent waters off Taichung harbor were used to estimate growth parameters as well as yield-per- recruit using the MULTIFAN method, and to analyze mortality as well as recruitment patterns using the ELEFAN method. A total of 10 months data was collected between February 1992 and January 1993. The growth analysis showed that female shrimps grow more rapidly and reach larger sizes than do males. Parameters of the von Bertalanffy growth equation with seasonal fluctuations obtained were: (1) k (growth coefficient)=0.23 year-1; L (asymptotic length)=86.7 mm CL (Carapace length); C=0.95 (amplitude of seasonal growth oscillation) and ts (start of a sinusoidal growth oscillation)=-0.07 for females; and (2)k=0.19 year-1; L=77 mm CL; C=0.95 and ts=0.07 for males. Total mortality estimated for males and females was 1.3 year-1. Natural mortalities for females and males were 0.67 year-1 and 0.58 year-1, respectively. Fishing mortality was 0.63 year-1 in females and 0.72 year-1 in males. The yield-per-recruit analysis suggested the following: (1) the level of yield can be raised if the length is increased at first capture; (2) a further increase in the current fishing effort will also produce an increase in yield, but this increase will be very limited and might entail unsuitable economic costs and biological risks.


    

本卷期目次
ACTA Oceanographica Taiwanica 37卷2期 (1998.9)
Bifurcation Current Found along the Coast of the Kii Peninsula and Position of the Kuroshio Axis/ Junichi TakeuchiYutaka Nagata
Does Small-Scale Meander Travel Eastwards and Trigger Large-Scale Meander of the Kuroshio?/ Yutaka Nagata
The role of the Taiwan Strait in an Ecological Model in the East China Sea/ Xin-Yu GuoTetsuo Yanagi
A Numerical Simulation of the Circulation in the South China Sea-Preliminary Results/ Takano KenzoHarashima AkiraNamba Takaya
Growth, Mortality and Yield-per-Recruit of Kuruma Shrimp(Penaeus japonicus) from Adjacent Waters off Taichung Harbor/ Tzong-Der TzengShean-Ya Yeh
Sexual Reproduction of the Ascidian Polycarpa cryptocarpa kroboja from the Northern Coast of Taiwan/ Yung-Tse ChenChang-Feng Dai
陸棚對台灣東北方黑潮形成水環之影響/ 李?運
 
   
 
   

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