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1
題名:GENERAL REVIEW OF DEMERSAL FISH RESOURCES AROUND TAIWAN    
臺灣近海拖網漁場之資源研究
著者:Hsi-Chiang Liu(劉錫江) ;Chin-Lau Kao(郭慶老)
出版地區:台灣
出版城市:台北市
學科:地球科學
刊名:Science Reports of the National Taiwan University ACTA Oceanographica Taiwanica
卷期:9期(1979.2)
頁碼:77-96
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

臺灣近海之拖網漁業,主要包括單拖、雙拖及小單拖三種漁業。單拖之主要漁場?東海南部,雙拖?臺灣海峽,小單拖則?舟山島、澎湖?島及臺灣堆。 由1970至1976年的漁獲統計資料來看,單拖的努力量(投網數)自1970年起?逐年增加,於1974年達最高,1975年下降,但1976年又上升至幾乎與1974年相同之水準。生產量的變動趨勢與努力量相同,但1976年的生產量?僅?1973年的82%。而單位努力生產量(箱/網)於1973年達最高?,自1974年起?下降,1976年降至最低水準。雙拖的努力量自1970年起?下降,於1974年降至最低,1975年後才又上升。生產量的變動趨勢與努力量相同1976年的生產量僅?,1970年的62%。而單位努力生產量自1970年開始上升,於1973年達最高?,但自1974年起?年年略下降。單拖之主要漁獲物?白帶、海鰻、烏賊、蟹類、白鯧,其生產量佔單拖總生產量之50%以上。雙拖之主要漁獲物?白帶、狗母、烏賊、白口、海鰻,其生產量?雙拖總生產量之50%左右。小單拖之主要漁獲物在臺灣北部及澎湖附近?小蝦,在臺灣堆則?下雜魚,食用魚種以狗母?最多。 經多年的捕撈,臺灣海峽單拖網漁業的魚種組成明顯地呈現變化。其原因?金線、紅目鰱、赤?、狗母、柔魚等產量減少,而白帶魚、海鰻、烏賊、蟹類之產量增多。 臺灣近海之底棲魚類資源已有過度開發之虞,漁獲努力不宜增加,某些有效的漁業管理政策亦應早日實施。
The trawl fisheries around Taiwan can be divided into three categories: otter trawlers pair trawlers and baby trawlers. The main fishing ground of the otter trawlers is the southern part of the East China Sea, that of the pair trawlers is the Taiwan Strait and those of the baby trawlers are waters northward to Taiwan and the Taiwan Strait. The fishing effort (in hauls) of the otter trawlers increased since 1970, and reached the maximum in 1974, but suddenly decreased in 1975. In 1976, the effort rised to almost the same level of 1974. The catch (in tons) is similar in trend to effort, but the catch of 1976 is only 82% of 1973. The CPUE of 1973 is the highest level in the years of 1970-73. In 1975 and 1976, the CPUE decreased to the lowest level. For pair trawlers, the effort decreased since 1970, and reached the lowest level in 1974. From 1975, the effort rised again. The trend of catch is similar to that of effort. The CPUE reached the highest level in 1973, after then it decreased. For baby trawlers, the effort had a marked upward trend from 1967 to 1974, but decreased in 1975 and 1976. The catch had increased since 1967. In 1976, the catch reached the highest value in the past years. The CPUE had a trend of slight decrease in 1967 to 1974, but the trend increased again from 1975. The main species caught by the otter trawlers are hair tail, sea eel, cuttle fish, crabs, white pomfret, white croaker, black croaker, min croaker, small yellow croaker and squid. The catch of hair tail, sea eel, cuttle fish, crabs and white pomfret occupies above 50% of the total catch of otter trawlers. The main species caught by the pair trawlers are hair tail, lizard fish, cuttle fish, white croaker, sea eel, big eye, red sea bream, squid, butter fish and black croaker. That of hair tail, lizard fish, cuttle fish, white croaker, sea eel occupies about 50% of the total catch of the pair trawlers. In these main species caught by otter and pair trawlers the hair tail is the most abundant one. The main species caught by the baby trawlers are different according to areas. For the area around the Pescadores and northward to Taiwan, the main species is shrimps, as for the area around the Formosa Bank, the main species is lizard fish. There is significant change of species composition between 1970 and 1973, and between 1970 and 1976 for the otter trawlers operating in the Taiwan Strait. The reason is that the catch of golden thread, big eye, yellow sea bream, lizard fish and squid decreases while the catch of hair tail, sea eel, cuttle fish and crabs increases. The demersal fish resources around Taiwan have been heavily exploited, the fishing intensity should not be encouraged, and some effective management should be adopted as soon as possible.


    

本卷期目次
Science Reports of the National Taiwan University ACTA Oceanographica Taiwanica 9期 (1979.2)
DOWNWARD CONTINUATION OF MAGNETIC FIELD AND THE MAGNETIC ANOMALIES OF OFFSHORE TAIWAN/ Chin-Cheng HuRichard S. Lu
INTESTINE COILING PATTERNS OF CHAETODONTIDS FROM TAIWAN: A PREIMINARY STUDY OF THEIR PHYLOGENIES/ Shih-Chieh ShenChiu Lam
A STUDY ON THE SILICOFLAGELLATES ALONG THE NORTHERN COAST OF TAIWAN/ Rang Huang
臺灣近海平花鰹的資源研究Ⅲ.年齡與成長率/ 黃哲崇張麗鳳楊榮宗
臺灣近海平花鰹的資源研究Ⅳ.形態測定與資源結構的分析/ 王健雄楊榮宗
臺灣西部沿岸之微生物學研究(Ⅱ)海洋酵母?之生理活性/ 鄭玉珍林良平
PRIMARY PRODUCTIVITY AND CHEMICAL NUTRIENTS ALONG THE SOUTHERN COAST OF TAIWAN/ Tsu-Chang HungMay-Chune KoCharley C. H. Tsai
GEOCHEMISTRY OF ANDESITES FROM KUEISHANTAO/ Mao-Don ChangJu-Chin Chen
ON UPWELLING OFF THE PENG-HU ISLANDS/ Kuang-Lung Fan
CLAY MINERALS IN UNCONSOLIDATED AND HIGH PRESSURE CONSOLIDATED SEDIMENTS/ Min-Pen Chen
GENERAL REVIEW OF DEMERSAL FISH RESOURCES AROUND TAIWAN/ Hsi-Chiang LiuChin-Lau Kao
GEOCHEMISTRY OF BASALTS FROM LEG 31 OF THE DEEP SEA DRILLING PROJECT/ Ju-Chin ChenLung-Hui Chen
AGE AND GROWTH OF GOLDEN THREAD, NEMIPTERUS VIRGATUS (HOUTTUYN), FROM THE EAST AND THE SOUTH CHINA SEAS/ Chin-Lau KaoHsi-Chiang Liu
 
   
 
   

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