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臺灣西南海域底棲經濟魚種漁期、漁場及產卵熱區調查

  • 日期:108-02-12
  • 計畫編號:108農科-9.2.2-水-A2
  • 年度:2019
  • 領域:漁業科技研發
  • 主持人:賴繼昌
  • 研究人員:吳龍靜、翁進興、黃建智、陳羿惠、黃星翰、何珈欣、吳 伊淑、陳秋月、黃婉綺、傅奕翔、余淑楓、周慈彗

    根據漁業統計資料顯示,沿近海漁業資源呈現逐年下降的趨勢,因此當務之急 便是擬定適合的管理策略。然而在擬定策略前所需要的相關科學依據,例如捕獲魚 種資源比例分布狀況、作業漁場、漁期甚至產卵區域等仍然缺少一個具整合性且明 確的科學報告。故本研究針對臺灣西南海域具有高漁獲量且多樣性的底棲魚類進行 調查,探討底棲經濟性魚種資源在漁場中之各種面向,以作為後續擬定漁法、漁場 甚至是魚種資源管理策略之參考依據。

    本研究運用資料庫解析不同漁法捕獲之底棲經濟魚類CPUE、漁場位置及產卵熱 區等資訊,完成西南海域大眼鯛、帶魚屬魚類、刺鯧、黑口、黄背牙鯛(赤鯮)、短 棘鰏、杜氏叫姑魚、花身雞魚、蛇鯔屬等9種魚類漁期調查,及大眼鯛、帶魚屬魚類 (日本帶魚)、刺鯧、黑口等4種魚種1分方格尺度的季節別漁場與產卵熱區分布位置 解析。產卵位置大致集中在高雄一港口-二港口外,及小琉球南方海域。本研究有助 於未來針對重要底棲經濟魚種之管理策略擬定時,決定管理時段及管理空間。期待 研究結果對精進現行的管理政策及對未來對漁法、漁場、漁期的管理規劃可提供參 考。

研究報告摘要(英)


    For the purpose of sustainable fishery, it is a urgent need to make conservation strategies for fish resources of nearshore and offshore fisheries off southwestern Taiwan waters. However, there is no large scale scientific reports of fishing season and area, and spawning grounds, which are necessary for making policy. Our study focus on the fishing season and area, and spawning grounds of main target species of demersal fish off southwestern Taiwan waters. The results can be considered as the scientific evidence for stock assessment in the future.

    In this study, we used the database to analyze information such as CPUE, fishery location, and spawning hotspots of benthic economic fish captured by different fishing methods. We completed the fishery period survey of nine species such as Priacanthus macracanthus, Trichiurus spp., Psenopsis anomala, Atrobucca nibe, Dentex hypselosomus, Leiognathus equulus, Johnius dussumieri, Terapon jarbua, and Saurida spp. And analysis the position of seasonal fishing grounds and spawning hotspots , such as Priacanthus macracanthus, Trichiurus spp., Psenopsis anomala, Atrobucca nibe, the geographical scale unit is 1 minute.  The spawning locations are mainly concentrated outside Kaohsiung Port 1-Port 2 and in the southern waters of Ryukyu. It will help to plan the management strategy for important benthic economic fish species in the future, and determine the management time and management space. It is expected that the research results will provide a reference for the improvement of current management policies and the future management planning for fishing methods, fishing grounds and fishing seasons.