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水產研究(1993年創刊)

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  • 點閱: 879
  • 日期: 2019-10-15
水產研究(1993年創刊)-臺灣西南水域刺公鯷稚魚之成長
主題: 臺灣西南水域刺公鯷稚魚之成長
摘要(中):
刺公鯷 (Encrasicholina punctifer Fowler, 1938) 為臺灣沿岸水域常見的小體型魚類,並為魩鱙漁業主要漁獲物種之一。刺公鯷的外型與異葉公鯷 (E. heteroloba Rüppell, 1837) 相似,二物種經常於同地先後或同時出現。先前對於刺公鯷日齡及成長的研究多限於30日齡內的仔魚階段,而30日齡以上之稚魚階段,因為並非漁業之主要利用對象及受漁具選擇性影響,使其在沿岸水域之成長狀態並不瞭解。本研究應用耳石 (矢狀石) 定日齡,探察2002年至2006年臺灣西南水域 (枋寮) 刺公鯷稚魚之成長情形。共分析258標本,其體長 (standard length) 範圍為31.1–78.7 mm,日齡分布為30–77日。由套適之von Bertalanffy成長方程式推算,刺公鯷之成長率為0.56 mm d–1,與其他熱帶鯡亞目之成長率相近。本研究相關結果可提供魩鱙漁業管理措施規劃之參考。
出版日期: 2018/6/30
標題title(英): Growth of Buccaneer Anchovy (Encrasicholina punctifer) During Juvenile Stage in the Waters off Southwestern Taiwan
作者: 黃慶輝‧陳志炘‧丘臺生
卷別: 26
期別: 1
頁碼: 53-61
作者 auther(英): Ching-Huei Huang, Chih-Shin Chen and Tai-Sheng Chiu
摘要abstract(英): The buccaneer anchovy (Encrasicholina punctifer Fowler, 1938) is one of the major species caught by the coastal larval anchovy fisheries around Taiwan. The morphology of buccaneer anchovy is similar to that of its congener E. heteroloba (Rüppell, 1837), which is always caught simultaneously or subsequently by the same fisheries. Most previous studies of the species have focused on the larval stage, that is, when the fish are younger than 30 days old, because the study samples were collected from fishery catches that were caught with gear that selectively targets larval anchovies. However, for the purpose of conservation and management, understanding the growth of the population after early-life stage exploitation is necessary. Therefore, in order to explore the growth parameters after the larval stage, 258 specimens of juvenile buccaneer anchovy (>30 days old) were collected from the waters off southwestern Taiwan (Fang-liao) during 2002 and 2006. For each specimen, the standard length (SL) was measured, the sexual maturity stage was determined, and the otoliths (sagittae) were extracted for microstructure analysis. The length composition of the juvenile anchovy caught in the waters off southwestern Taiwan ranged from 31.1 to 78.7 mm SL, while their ages ranged from 30 to 77 days. The growth rate, estimated from the von Bertalanffy growth function, of the buccaneer anchovy was 0.56 mm d-1, which is similar to those of other tropical anchovies. These data provide critical information regarding management strategies for the larval anchovy fisheries in Taiwan.
使用語言: 英文
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