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題名 | 花身雞魚的耳石成長與生活履歷關係之研究=Correlation between Otolith Growth and Life History of Thornfish Terapon Jarbua in the Waters Around the Thermal Effluent Outfall of the Kin-Shan Nuclear Power Plant, Taiwan |
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作者 | 鄭豐洲; 張永明; 曾萬年; | 書刊名 | 臺灣水產學會刊 |
卷期 | 23:2 1996.06[民85.06] |
頁次 | 頁79-94 |
分類號 | 387.101 |
關鍵詞 | 花身雞魚; 畸型魚; 耳石; 成長; 生活史; Thornfish; Deformity; Otolith; Growth; Life history; |
語文 | 中文(Chinese) |
中文摘要 | 花身雞魚Thornfish (Terapon jarbua Forsskal)為本省沿岸的優勢魚種,其仔 稚魚於每年4-10月間成群洄游於河口域。本研究的目的在比較正常與畸基花身雞魚耳石成長 的差異性,並推測畸型魚發生時的日齡及其生活履歷。結果發現金山核二廠排水口正常與畸 型魚耳石與體長的相對成長關係有顯著性的差異,但兩者的體長與體重關係並無顯著或差 異。由耳石形能變化及輪數,得知花身雞魚大約在孵化後21天進入排水口附近海域。受到高 水溫的影響,畸型魚耳石的成長比正常者快,因此造成耳石與體長的相對成長的不偶合現 象。 |
英文摘要 | Thornfish (Terapon jarbua Forsskal) is one of the dominant species of fish in the coastal waters and estuaries of Taiwan. Its larvae and juveniles migrate to these areas during April to October. This study compared the difference in the morphology of otolith between the normal and deformed thornfish collected in the waters around the thermal effluent outfall of the Kin-Shan nuclear power plant and in the estuary of Gong-Shy-Tyan Creek in northern Taiwan. Also, the daily ages and early growth life history of the deformed thornfish were examined. Fish length and otolith length relationship was significantly different between the normal and the deformed, but not for the length-weight relationship. The thornfish migrated to the nearshore waters at the age of approximately 21 days after hatching. The deformity was due to high temperature. Growth of otolith was faster in the deformed than the normal. This leads to uncoupling of somatic and otolith growths for the deformed fish. |
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