原名「台灣學術線上」
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題名:Age and Growth of Two Co-Occurred Anchovy Species(Encrasicholina Puntifer and E. Heteroloba)during Autumn Larval Anchovy Fishing Season in I-Lan Bay,NE Taiwan    
宜蘭灣兩同出現鯷魚(E. Puntifer and E. Heteroloba)之成長—兼論視同單一系群之合適性
著者:Tai-Sheng Chiu(丘臺生) ;Chung-Ling Chen(陳璋玲) ;Shuh-Sen Young(楊樹森)
出版地區:台灣
出版城市:基隆市
學科:農林漁牧礦科學
關鍵字:系群 ; 矢耳石成長 ; 成長曲線 ; 成長率 ; Stock ; Sagittae Growth ; Gompertz Equation ; Growth Rate
刊名:Journal of the Fisheries Society of Taiwan
卷期:26卷4期(1999.12)
頁碼:183-190
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

本研究利用1981至1997年間台灣鮪延繩釣漁船所採獲之漁獲統計及体長資料,針對南大西洋長鰭鮪Thunnus alalunga目前之資源狀況做一探討。南大西洋長鰭鮪從1981到1993年間之体長組成大致上類似。在此年間所捕獲之長鰭鮪体長範圍大約從70公分到120公分左右。而1994到1997年間則明顯有小魚(<70公分)出現之情形。在所有之年度,34漁區之單位努力漁獲有高於、而平均漁獲体長則有低於33漁區之現象。在33漁區之單位努力漁獲從1981年持續的降到1996年,而在34漁區則於1981至1986年間維持一高值、在1987到1993年間降到低值、而在1993年後則又回升。小魚增加之情形不僅出現於日本傳統南方黑鮪作業漁場內、在其漁場外亦有類似之情形。体長頻度分佈中小魚峰度由1995到1997年之推移情形亦與南大西洋長鰭鮪小魚之平均年成長相互吻合。由這些觀察顯示南大西洋長鰭鮪資源量於最近幾年有增加之趨勢,尤其是在34漁區之內。本報告針對此結果所顯示之含意及其對國際上南大西洋長鰭鮪資源管理之影響亦做一討論。
Albacore,Thunnus alalunga,caught in the south Atlantic Ocean was examined basedupon historical size and catch data collected from longline fishery between 1981 and 1997.There were no apparent changes in size composition in the southern stock between 1981and 1993.Dominant size of albacore ranged from 70 to 120 cm in most years except for1994-1997 period when large amount of small albacore(i.e.,<70 cm)were evident.Adjusted catch-per-unit-effort(ACPUE)was higher while mean size of fish caught wassmaller in ICCAT statistical area 34 than in 33 in all years.ACPUE decreased continuously from 1981 to 1996 in area 33,but was high in area 34 during 1981-1986 period,decreased to low values in 1987-1993,and increased again after 1993.Increases incatch of small albacore were also seen in areas within and outside Japanese SouthernBluefin Tuna fishing ground.Shift in modes of length frequency distribution for small albacore from 1995 to 1997 coincides with mean growth rate of ages 1 to 3 fish in the southernstock.This observation might suggest an increase in abundance of southern stock inrecent years especially in area 34.Implications of such an observation in relation to themanagement of southern stock were also discussed.




本卷期目次
Journal of the Fisheries Society of Taiwan 26卷4期 (1999.12)
Age and Growth of Two Co-Occurred Anchovy Species(Encrasicholina Puntifer and E. Heteroloba)during Autumn Larval Anchovy Fishing Season in I-Lan Bay,NE Taiwan/ Tai-Sheng ChiuChung-Ling ChenShuh-Sen Young
Examination on Recent Increase in Juvenile Catch of South Atlantic Albacore Thunnus Alalunga: Observations and Implications/ Shui-Kai ChangShyh-Bin WangShean-Ya Yeh
Analysis of the Morphometric Characters of the Kuruma Shrimp(Penaeus Japonicus)in the East China Sea and the Taiwan Strait/ Tzong-Der TzengShean-Ya Yeh
An Experimental Study on the Deformation of the Net Cages/ Kei-Chien YuSyue-Sinn LeuYau-Shou Chow
Effects of Substituting Fermented Soybean Meal for Fish Meal in Diets on Growth and Body Composition of Soft-Shelled Turtle,Trionyx Sinensis/ Chen-Huei HuangWay-Yee Lin
Captive Broodstock of Penaeus Vannamei Cultured from Postlarva in Closed Recirculating System and Its Reproduction Performance/ Koa-Jen JongJenn-Kan Lu
The Impacts of Women's Knowledge about the Nutritional Value of Seafood Products on Seafood Purchase Intention in Taiwan/ Fu-Sung ChiangShau-Yen Huang
 
   
 
   

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