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臺灣北部海域蟹類漁業資源之調查研究

  • 日期:107-02-20
  • 計畫編號:107農科-9.2.1-水-A1(2)
  • 年度:2018
  • 領域:漁業科技研發
  • 主持人:陳均龍
  • 研究人員:莊世昌、金建邦

本研究目的係監測臺灣北部海域蟹籠漁業資源及生產經濟現況,自2016年5月 ~2018年9月建立11艘標本船資料並蒐集紅星梭子蟹樣本進行分析。研究結果顯示 ,LPUE、IPUE、產量、產值及生產經濟指標等顯示故秋冬兩季惟蟹籠漁業主要漁期 。研究結果顯示,從CPUE來看紅星梭子蟹與鏽斑蟳的漁獲期大致相同,但紅星梭子 蟹較少有在澎湖及臺中外海所捕獲,大多集中在西北漁場。另紅星梭子蟹生殖生物 學研究發現,各月別的雌蟹比例(Female / Female + Male)變動範圍在0.52-0.86之 間,其中4、6、8月的雌蟹比例皆超過80%,而5、7月的雌蟹則約佔50%。在漁獲體型 上,本年度所蒐集的紅星梭子蟹雌蟹之頭胸甲寬範圍為10.1-15.5cm,平均為 11.9cm,雄蟹範圍為10.0-15.4cm,平均為12.3cm。結果亦顯示紅星梭子蟹於成蟹階 段的頭胸甲寬與體重之關係呈線性相關,雄蟹與雌蟹之頭胸甲寬與體重關係亦相近 。另本研究紅星梭子蟹的研究採樣,幾乎全年都可採集到抱卵母蟹,其中以7月份之 抱卵比例為最低,佔8.52%,最高為6月份的37.50%,平均為22.83%。

研究報告摘要(英)


The objectives of this study are to monitor the status of crab pot fishery resources and production economic in the northern waters off Taiwan. In this study, 11 sample vessel data and three-spotted swimming crab ( Portunus sanguinolentus ) samples were collected to be analyzed. The results indicated LPUE, IPUE, landing, and value had a peak during autumn to winter. The results also indicated that the major fishing season of Crucifix crab ( Charybdis feriata ) and Three-spotted swimming crab were similar. In terms of reproductive biology, the sex ratio ((Female / Female + Male)) were 0.52 to 0.86 during survey periods, higher than 80% in April, June, and August. The female Three-spotted swimming crab carapace width were in a range of 10.1cm to 15.5cm, average value was 11.9cm; the male Three-spotted swimming crab carapace width were in a range of 10.0cm to 15.4cm, average value was 12.3cm. The relationship between Three-spotted swimming crab carapace width and body weigh were linearly related. In addition, we collected ovigerous female full year, the highest percentage of ovigerous female (37.50%) was June; the lowest percentage of ovigerous female (8.52%) was July; the average value of ovigerous female was 22.83%.