Studies on Life History, Biological Reference Points and Uncertainty for Striped Marlin (Kajikia audax) in the Waters off Taiwan

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Project title

Code/計畫編號

NSC102-2313-B019-020-MY3

Translated Name/計畫中文名

台灣近海紅肉旗魚 (Kajikia audax) 之生活史、生物參考點及其未確定性研究

Project Coordinator/計畫主持人

Nan-Jay Su

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

孫志陸

Department/Unit

Department of Environmental Biology and Fisheries Science

Website

https://www.grb.gov.tw/search/planDetail?id=8108421

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

31-07-2015

Bugetid/研究經費

1900千元

ResearchField/研究領域

漁業

全球漁業資源逐年萎縮，紅肉旗魚近幾年亦特別受到漁業界與保育團體的關注，並被IUCN 列為近危物種。ISC 2011 年紅肉旗魚資源研究報告指出，WCNPO 系群之生物量呈現長期的下滑趨勢，資源有過度開發之虞。良好漁業資源管理策略仰賴於對於族群動態的瞭解，資源評估的結果往往受到基礎生活史及漁業資料的未確定性的影響。有鑑於國際對該魚種的關注，且該魚種在西太平洋的生活史尚未究明，在台灣近海的資源研究亦付闕如，因此本研究計劃著重在台灣近海紅肉旗魚之族群動態解析，發展隨機-單位加入模式(stochastic per-recruit model, SPRM)，進行該資源生物參考點的估計及提供漁業管理策略建言。全程計劃分三年完成，第一年計劃為台灣近海紅肉旗魚生物樣本收集及年齡-成長研究；第二年計劃為紅肉旗魚生物樣本收集及生殖生物學研究；前兩年研究結果可對紅肉旗魚生活史有進一步的瞭解，並提供第三年建構SPRM 模式之輸入參數。第三年計劃為紅肉旗魚生物樣本資料庫更新及整合，進行SPRM 模式之研發及未確定性分析，研究結果可進一步瞭解台灣近海紅肉旗魚之族群動態、資源現況及不同漁業管理策略的影響。透過執行本計畫三年之研究成果，將有助於達到漁業資源永續利用之目標。The stock status of striped marlin is of enormous concern to various fisheries and conservation groups, and is classified as near-threatened by the IUCN. Stock assessment research of theWCNPO striped marlin working group conducted by ISC (2011) suggested a long-term decreasing trend of the spawning stock biomass and a high risk of overexploitation for populations. Development of an optimal management strategy for fisheries resources requires a good understanding of fish population and ecosystem dynamics. Due to mounting concern on the status of striped marlin populations, the current research project will collect biological data on age, growth and reproduction, and then use this information to develop a stochastic per-recruit model (SPRM) for understanding the population dynamics of striped marlin in Taiwan waters. In the first year of the project, the experimental design will focus on field sampling and the quantification of the age-and-growth structure. The second year will continue field sampling and with an emphasis on examining variability in life history traits and reproductive dynamics. Results from these two years will serve to improve our knowledge of the life history traits of this ecologically and economically important species and provide critical input-parameters for the estimation of biological reference points (BRPs) based on SPRM. Hence, in the third year and final year of the project, we will focus on integrating the previous two years’ results into the development of the SPRM through intensive simulation and estimation of BRPs taking uncertainty into account. Results of this project will provide much needed quantitative information on the status of striped marlin stocks and will make major contributions to the proper management and sustainable exploitation of this important resource in Taiwan waters

Keyword(s)

年齡與成長
生殖生物學
單位加入生產量
單位加入親魚量
生物參考點
未確定性
age and growth
reproductive biology
yield-per-recruit
spawning stock biomass-per-recruit
reference points
uncertainty

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Studies on Life History, Biological Reference Points and Uncertainty for Striped Marlin (Kajikia audax) in the Waters off Taiwan

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