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研究生:張美瑜
研究生(外文):Mei-Yu Chang
論文名稱:台灣西南海域冬季表洋性魚卵的分布
論文名稱(外文):The wintertime distribution of epipelagic fish eggs alongsouthwestern coast of Taiwan
指導教授:陳孟仙陳孟仙引用關係
指導教授(外文):Meng-Hsien Chen
學位類別:碩士
校院名稱:國立中山大學
系所名稱:海洋資源學系研究所
學門:自然科學學門
學類:海洋科學學類
論文種類:學術論文
論文出版年:2003
畢業學年度:91
語文別:中文
論文頁數:107
中文關鍵詞:烏魚冬季西南海域台灣魚卵
外文關鍵詞:wintertimemulletTaiwanfish egg
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本研究的目的在於探討台灣西南沿岸海域冬季魚卵的分佈,進而解析該海域中魚類的產卵情形,以及烏魚魚卵冬季在台灣西南沿海的分佈。
本研究採用表層及斜拖網兩種方式,前者的測站選擇分為垂直與平行海岸線兩種, 2000年11月18日, 12月11日、12月22日及2002年1月7日以海研三號於布袋、茄萣及枋寮由水深10公尺至1140公尺,進行三條垂直海岸線的測線採樣;2000年11月18日、2001年1月15日、12月21日和2002年1月7日則進行平行海岸線,由布袋、茄萣、左營、中洲、林園、大鵬灣、林邊至枋寮沿岸的10海浬以內的樣品採集。另外,亦分析2001年12月19日及2002年1月2日以海研一號於台灣海峽所採得7瓶垂直採樣的樣品。使用的網具包括北太平洋標準網、仔稚魚網及Bongo Net,挑揀得5909顆魚卵。
福馬林固定後的樣品可鑑出的魚卵種類包括有燈籠魚目,狗母魚科、四齒魨科、角魚科、鯷科、寶刀魚屬、�Ь搕峞B�~魚、仙女魚等共計9類;其他無法鑑出的魚卵,則依其卵形、油球數、卵膜上的花紋、圍卵腔的寬窄及卵徑大小分為AⅠ∼Ⅸ、BⅠ∼Ⅷ、CⅠ∼Ⅵ、DⅠ∼Ⅹ及EⅠ∼Ⅷ等四十一群進行計數分類。其中前四優勢種依序為鮻屬、鯷科、死卵與CⅤ群。
在茄萣及枋寮的兩條測線上均發現魚卵豐度由近岸(枋寮=514 ind/m3,茄萣=73 ind/ m3)向外海(枋寮=33 ind/m3,茄萣=63 ind/m3)遞減的情況;但在布袋測線卻相反。鮻屬魚卵亦以近岸15米水深測站的豐度較高,且有由近岸向遠岸遞減的現象。沿岸10海浬以內15公尺至25公尺水深海域中,不論是總魚卵豐度、鮻屬或是鯷科魚卵豐度,都以南邊測站較北邊的測站為高。海研一號的兩個航次中所挑揀出的魚卵,在台灣海峽中部外海測站發現有33顆油球徑佔卵徑1/3可能為烏魚魚卵,此測站恰好是位於大陸沿岸流和黑潮水交會處指標的21℃等溫線邊緣。
在本研究中2000至2001年間的水文變動主要是受到沿岸潮汐現象與海底地形變動的影響,而2001至2002年間則受到黑潮水的影響,此年際間水團性質不同致造成魚卵豐度的年間差異。至於在林園測站則可能受到高屏海底峽谷水流擾動,而提高該海域的生產力,並呈現有魚卵豐度較高的現象。
The purpose of this study is to investigate the wintertime distribution of the fish eggs along the coast of southwestern Taiwan, and to elucidate the fish spawning ground in this area. Moreover, the distribution of striped mullet eggs was also investigated.
Two kinds of sampling methods were used in this study, including the surface and vertical trawling. The former applied vertical and oblique towing along the coastline. One sampling was proceeded in November, December 2000, and January 2002 by R/V Ocean Researcher 3 at three transects vertically along the coastline at 10 to 1140 meters deep in Budai, Jiading, and Fangliau. The other was proceeded in November 2000, January, December 2001, and January 2002 parallelly along the coastline at 8 sites from Budai to Fangliau. Besides, the vertical sampling employed in December 2001 and January 2002 by R/V Ocean Researcher 1 in the Taiwan Strait was also analyzed. A total of 5909 fish eggs were obtained from three sampling nets, NORPAC, cyclindricalconic net, and bongo net.
All together 4 families, 2 genera, and 2 species of fish eggs, including Myctphiformes Synodontidae, Engraulidae, Tetraodontiformes Tetraodontidae, Scorpaeniformes Triglidae, Muglidae, Clupeiformes chirocentru hyposelosoma, Salmoniformes Polyipnus polli, and Allopus japonicus were found. The fish eggs that couldn’t be identified were sorted into 41 groups by the egg shape, size, and membrane pattern. The four most abundant fish eggs were Muglidae, Engraulidae, dead eggs, and group CV.
The fish eggs abundance decreased from inshore to offshore at two transects in Jiading and Fangliau. But it was contrary at the transect of Budai. The same pattern also appeared in the distribution of Muglidae eggs. In the area of inshore water where waterdepth from 15 to 25 meters, higher abundance of total eggs, Muglidae, and Engraulidae were found at the southern site. Muglidae eggs were the most abundant in December, but Engraulidae eggs didn’t appear in this month.
33 fish eggs that might be striped mullet were sampled by OR1 at the edge of 21 ℃ isotherm where China Coastal Current met Kuroshio Current. The hydrographic variation in the year from 2000 to 2001 was affected by tides and topography, whereas in the year from 2001 to 2002 was influenced by Kuroshio. Higher fish eggs abundance found at Linyuan may due to the turbulence of Kao-Ping submarine canyon.
目錄

中文摘要…………………………………………………………….. I
英文摘要…………………………………………………………….. III
目錄………………………………………………………………….. V
表目錄……………………………………………………………….. VIII
圖目錄……………………………………………………………….. IX
附錄目錄…………………………………………………………….. XII
謝辭………………………………………………………………….. XIII
一、前言…………………………………………………………….. 1
1.1臺灣海峽的冬季流場………………………………………. 1
1.2魚卵研究的重要性…………………………………………. 2
1.3烏魚研究回顧………………………………………………. 3
1.4目的………………………………………………………….. 4
二、材料與方法…………………………………………………….. 5
2.1.1 海研一號………………………………………………. 5
2.1.2 海研三號………………………………………………. 5
2.1.2.a垂直海岸線…………………………………… 5
2.1.2.b平行海岸線…………………………………… 6
2.2 採樣方法…………………………………………………… 6
2.2.1 垂直拖網……………………………………………… 6
2.2.2 水平拖網……………………………………………… 7
2.2.3 水文資料搜集………………………………………… 7
2.3 樣品處理……………………………………………………. 7
2.3.1 魚卵樣品挑揀………………………………………… 7
2.3.2 魚卵樣品保存………………………………………... 7
2.3.3 魚卵鑑種……………………………………………... 7
2.3.4 建立群別表…………………………………………... 8
2.4 資料處理及分析…………………………………………… 9
三、結果…………………………………………………………….. 10
3.1 水文資料……………………………………………………. 10
3.1.1 海研三號垂直海岸線………………………………… 10
3.1.2海研三號垂直海岸線………………………………… 11
3.2 浮游動物組成………………………………………………. 12
3.3 魚卵鑑種結果………………………………………………. 12
3.4 網具間差異…………………………………………………. 13
3.5測站間的差異………………………………………………. 14
3.5.1 679航次………………………………………………. 14
3.5.2 751航次………………………………………………. 15
3.5.3 比較679、751航次………………………………….. 16
3.6 近岸到離岸間的差異……………………………………… 17
3.6.1 669航次………………………………………………. 17
3.6.2 751航次………………………………………………. 18
3.6.3比較669、751航次………………………………….. 19
3.7 魚卵和水文因子間的關係………………………………… 19
3.8 垂直採樣…………………………………………………… 20
四、討論…………………………………………………………….. 21
4.1水文資料……………………………………………………. 21
4.2魚卵鑑種結果………………………………………………. 21
4.3 網具間差異…………………………………………………. 22
4.4 測站間差異…………………………………………………. 22
4.5魚卵和水文因子間的關係…………………………………. 23
4.6 不同水團間魚卵豐度差異…………………………………. 24
4.7 烏魚卵分佈…………………………………………………. 24
五、參考文獻……………………………………………………….. 25
表…………………………………………………………………….. 30
圖…………………………………………………………………….. 46
附錄………………………………………………………………….. 71
六、參考文獻
(A)英文部分
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楊鈞祈(2001) 高屏溪流域陸源物質之剝蝕與傳輸。國立中山大學海洋地質及化學研究所碩士論文。6
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