Study of precautionary indices for fish species under management in offshore and coastal water of Taiwan

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Project title

Code/計畫編號

111農科-6.4.2-漁-F1(Z)

Translated Name/計畫中文名

臺灣沿近海域管理魚種漁業預警指標研究

Project Coordinator/計畫主持人

Hsueh-Jung Lu

Funding Organization/主管機關

Council of Agriculture,Executive Yuan

Co-Investigator(s)/共同執行人

鄭明修
柯佳吟
林愛龍

Department/Unit

Department of Environmental Biology and Fisheries Science

Website

https://www.grb.gov.tw/search/planDetail?id=14578304

Year

2022

Start date/計畫起

01-01-2022

Expected Completion/計畫迄

31-12-2022

Co-Investigator(s)

William Wei-Yuan Hsu
Sheng-Ping Wang
Cheng-Hsin Liao
Chih-Shin Chen
Ming-An Lee
Shyh-Bin Wang

Bugetid/研究經費

9889千元

ResearchField/研究領域

漁業

＜OL＞＜LI＞鯖鰺漁業資源評估動態解析＜br /＞臺灣東北部鯖鰺漁場在大型圍網及扒網的持續利用下，主要漁獲花腹鯖已有成長率增加、極限體長降低、成熟年齡提前等過漁現象。漁業署於2013年對鯖鰺漁業實施了禁漁等相關措施，經本研究評估認為花腹鯖的成長型過漁顯然已獲緩解，但加入型過漁則尚未改善。為謀鯖鰺資源的永續利用，有必要進一步管理。本研究除對現行休漁制度施行後之成效，持續進行花腹鯖與白腹鯖的資源變動監測外，也進行漁獲比率逐漸增加真鰺及藍圓鰺之生殖生物學、年齡成長等進行研究，藉由綜合評估花腹鯖、白腹鯖、真鰺及藍圓鰺之資源動態。＜/LI＞＜LI＞臺灣西南海域鎖管漁業資源評估研究＜br /＞臺灣周邊水域的鎖管類主要為拖網與火誘網漁船所漁獲，主要作業漁場在東北水域、西南及澎湖水域(臺灣海峽)。其中東北水域主要漁獲物種劍尖槍鎖管之生活史參數與分佈洄游型態已有較明確之瞭解，但西南水域主要漁獲物種中國槍鎖管相關研究則較為缺乏，且本水域相關漁業捕獲鎖管物種之組成比例仍未究明。緣此，本計畫擬建立臺灣西南海域鎖管漁業活動資料庫，同時分析主要漁獲物種中國槍鎖管之年齡成長、生殖生物學等特性，以及其作業漁場之時空分布。＜/LI＞＜LI＞鬼頭刀漁業資源評估研究＜br /＞本研究持續依據收集及彙整之各項漁業統計資料進行臺灣沿近海漁業之漁獲物組成分析與鬼頭刀漁獲體型組成分析，本研究亦將持續進行臺灣海域鬼頭刀之CPUE標準化分析以獲得資源評估所需之相對資源豐度指標，進一步將彙整各項漁獲資料、生物參數及相對資源豐度指標以進行西北太平洋鬼頭刀資源評估分析。此外，本研究將根據資源評估分析結果之彙整確立運作模式之建構並研商擬定參考點，以進行漁獲控制規則與管理策略評估之初步建構與測試分析，以期提供作為漁業管理之初步參考依據。＜/LI＞＜LI＞臺灣周邊海域魩鱙資源變動及管理機制調整研究＜br /＞魩及鱙魚為臺灣經濟海域之鯷及鯡科小體型魚類之集合名詞，魩為仔魚，鱙為稚魚，均為重要的經濟魚類資源。為有效管理魩鱙，2001年起規範中明訂各縣市政府所轄漁區之漁船數、容許總漁獲量及禁漁期，同時訂定本項漁業之開放為期五年，並逐步取消此漁業，其後考慮經濟層面，延長至2008年12月31日。2009年起則進行有效管理之輔導性措施，透過有效監管以評估可捕獲情形與確保努力量與漁獲平衡。本計畫之目標是探討魩鱙漁業之資源量、漁獲努力量及漁獲量之時空變化，同時分析漁獲物之物種組成，探討目標魚種和混獲物種之利用狀態，並提供相關物種利用情形了解及管理建議。＜/LI＞＜LI＞臺灣周邊海域飛魚卵資源動態解析及管理之研究＜br /＞本研究主要目的乃針對臺灣周邊水域之飛魚卵漁業資源進行漁期、漁場及相關環境資料之收集，利用作業報表、樣本船、暨定置、追逐、與燈火漁業所收集之資料與衛星水文資料等進行詳細的檢視與分析，協助漁政單位評估、監控漁業報表填報誤差，有效掌握漁獲實況及管理績效，並瞭解漁業動態與環境或氣候因子之影響及其年別變異。＜/LI＞＜LI＞寶石珊瑚漁業漁獲資料分析及漁場評估研究＜br /＞寶石珊瑚為多類珊瑚物種之總稱。其骨針(碳酸鈣結晶)具相當硬度，研磨後具珠寶光澤(亮度)，因此被視為海洋之珍貴寶石。臺灣寶石珊瑚漁業發展已近90年，政府在2009年1月實施「寶石珊瑚漁業管理辦法」，以寶石珊瑚及其漁業之永續發展為管理目標。亦規劃漁業資料分析與族群生物研究計畫，在科學探測仍有技術性困難之階段，透過漁業採樣獲得資源與生態資料。本研究自2009年開始蒐集並建立寶石珊瑚漁業之漁獲統計資料，已初步瞭解漁業作業及物種組成之時、空間分布型態；完成主要寶石珊瑚物種之鑑定與形態描述，並對寶石珊瑚生態系有初步瞭解，但此資料之建立與探察仍應繼續。＜/LI＞＜LI＞臺灣西南海域眼眶魚(皮刀)資源調查評估＜br /＞眼眶魚在臺灣周邊海域均可發現，其主要分布於西南海域，並以扒網及拖網較常捕獲到。目前國內有關眼眶魚之生物學或其生理學之研究甚少，關於本物種之資源量、總漁獲量、棲地分布、食性、年齡結構與成長等，更幾乎完全闕如。隨著近年來之眼眶魚漁獲量減少，且考量其漁業資源之重要性原則下，為利提供行政機關之後續有效管理該魚種，爰需針對臺灣西南海域之眼眶魚資源量及生態調查等進行研究。＜/LI＞＜LI＞臺灣沿近海帶魚資源之生物參考點評估與漁業管理策略應用＜br /＞在缺乏臺灣沿近海帶魚類長期且可信賴的漁獲統計資料下，一般用於進行海洋漁業資源評估分析之模式目前應皆不適合用於進行臺灣沿近海帶魚類之資源評估。在此情況下，可行的方法是先透過大量的漁獲體型資料測量以分析體型與年齡結構組成並進行各項死亡率等族群參數之估計。本研究將依據臺灣沿近海帶魚類各主要魚種之各項死亡率等族群參數之估計值，目前可先參考前人之年齡成長與生殖生物學研究結果，利用單位加入生產量分析與單位加入親魚產量分析配合生物參考點估計進行臺灣沿近海帶魚類各主要魚種之相對資源水準與漁業利用程度分析＜/LI＞＜/OL＞＜OL＞＜LI＞Assessment of mackerel and scad fishery resources＜br /＞Under continuous exploration by large purse seine and tiger net, the spotted mackerel in the fishing ground in the northeastern Taiwan has significant overfishing phenomenon including increase of growth rate, reduce of maximum body length and earlier age of mature. The Fisheries Agency implelted Makerel-Carangid Fisheries Regulation in 2013. According to previous studies under this project, we found overfishing of growth type has been reduced, however, overfishing of recruitment type has not yet improved. For sustainable utilization of the mackerel and scad resources, further management is necessary. In this study, we not only monitor the effect of current moratorium measure via stock assessment of spotted mackerel and chub mackerel , but also enhance the monitoring works on reproductive biology, age and growth characteristics of jack mackerel and japanese scad due to increase catch in recent years.＜/LI＞＜LI＞Studies on the resources of mitre squid in the southwestern waters off Taiwan＜br /＞The major fishing grounds are located in the water off northeastern and southwestern Taiwan, and Penghu islands. While many studies have focused on the neritic squids in the coastal water off northeastern Taiwan, very few studies focused on the neritic squids in the coastal water off southwestern Taiwan and Penghu islands Hence, this project aims to investigate the neritic squids in the coastal water off southwestern Taiwan and Penghu island by establishing the fisheries activity database, examining the fishery biology (age, growth and reproduction), and characterizing the spatial and temporal distribution.＜/LI＞＜LI＞Study on the stock assessment of dolphinfish＜br /＞This study will continue to collect and aggregate fishery statistics and analyze the catch composition of Taiwanese coastal and offshore fisheries and the size composition of dolphinfish. The CPUE standardization will be continued to obtain the relative abundance index for dolphinfish in the waters of Taiwan, which is essential for stock assessment. The stock assessment of dolphinfish in the northwestern Pacific Ocean will be conducted based on the information aggregated from fishery statistics, biological parameters and relative abundance index. In addition, this study will confirm the framework of operating model based on the stock assessment analysis, discuss and determine the reference points and conduct a preliminary modelling and test analysis of management strategy evaluation with harvest control rules to provide a preliminary reference for fisheries management.＜/LI＞＜LI＞Monitoring resource fluctuation in Taiwanese Bua Fisheries and reviewing management plan＜br /＞Larval anchovy is an important resource for coastal artisan fishery in Taiwan, although harvesting fish at early stages may impose crucial impact on fragile resource, and cause conservation concerns.  In the meanwhile, the licensing time was set to a period of 5 years. For mitigating local economy, deferring was put forward to extend the licensing period until December 31, 2008. In 2009, effective regulation of the fisheries was established to assess fishing capacity and balance fishing effort and catches The goals of this project include: characterizing spatial and temporal trends in fishing capacity, fishing effort and catches, understanding compositions of both target and bycatch species, and providing understandings on species’ resource utilization as well as management with insights and advice on the resource implications of fishing activities.＜/LI＞＜LI＞Studies on the dynamics and management of flying fish roe fishery in surrounding waters of Taiwan＜br /＞The objectives of this research are to collect information on the fishing season, fishing ground and associated environmental factors influencing the flying fish roe fishery operate in coastal waters off Taiwan. The logbook, VDR data and the set net, driving-in net, light fisheries, as well as sampling vessels will be used in combination with collected environmental data to monitor the catch reports, effectiveness of management measures, and to understand the annual variations and dynamics of the fishery in relation to the climate and/or environmental changes.＜/LI＞＜LI＞Analysis of catch data and fisheries oceanography for Taiwanese precious coral fishery＜br /＞Precious coral is a collective term for many species of corals. Precious corals have been harvested and used as medicines, amulets, and jewelry since ancient times. The development of Taiwanese precious coral fishery (TPCF) has been for almost 90 years. The regulations for TPCF was amended and promulgated in January 2009 which aimed at sustainable development of coral populations and the fisheries. The scientific studies of precious corals were conducted since 2009. We applied fisheries data to understand the spatial and temporal pattern of fishing activities and catch composition. We also described and identified species of red coral from limited alive samples, and preliminary explored the habitats of precious corals. However, it is necessary to establish long-term investigation of stock structure and function of precious corals to support the management objectives.＜/LI＞＜LI＞The investigation and stock assessment of Mene maculate (moon fish) in the southwestern waters of Taiwan＜br /＞The moonfish is a common fish caught by inshore fisheries in the waters off southwestern Taiwan. The primary fishing methods in this area are Taiwanese seine netting and trawling. Even though many fisheries can catch these fish in the coastal waters of Taiwan but few studies for the resource, catch, habitat, feeding, the structure of age, and growth. The decline of moonfish catches in recent years and the principles governing the sustainable utilization of fishery resources entail the necessity of conducting research on moonfish resources in the southwestern waters of Taiwan.＜/LI＞＜LI＞Evaluation of biological reference points and implication of fishery management for hairtail in the waters of Taiwan＜br /＞Due to the absence of long-term and reliable catch statistics of Trichiurus fishery in the waters off Taiwan, the stock assessment models, which were commonly used for marine fishery resources, should not be suitable for evaluating the stock status of Trichiurus spp. in the waters off Taiwan. In this case, the feasible method is to analyze size- and age-composition and to estimate the population parameters, such as mortality rates, based on a large amount of catch at size data. This study will evaluate relative levels of biomass and fishing exploitation for major species of Trichiurus spp. in the waters off Taiwan using yield per recruit analysis and spawning stock biomass per recruit analysis with biological reference points based on the estimates of mortality rates, age-growth and reproductive biological parameters. ＜/LI＞＜/OL＞

Keyword(s)

飛魚卵
西北太平洋
眼眶魚
混獲組成
漁業管理
真鰺
年齡成長
藍圓鰺
中國槍鎖管
圍網漁業
資源評估
總容許捕獲量
花腹鯖
生物參考點
管理策略評估
生殖
白腹鯖
扒網漁業
飛魚
漁獲控制規則
紅珊瑚科
西南海域
區域合作
漁業改進計畫
鬼頭刀
臺灣海峽
扒網
魚種組成
台灣沿近海域
總容許捕獲量
漁獲動態
杜氏鎖管
單位加入親魚量
單位加入生產量
運作模式
帶魚
寶石珊瑚漁業
魩鱙漁業
flying-fish roe
Northwest Pacific
Mene maculate
Bycatch composition
Fisheries management
Trachurus japonicus
age and growth
Decapterus maruadsi
Uroteuthis (Photololigo) chinensis
Mackerel Purse Seine Fishery
Stock assessment
Total allowable catch (TAC)
Sc

DSpace CRIS

Study of precautionary indices for fish species under management in offshore and coastal water of Taiwan

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