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頁籤選單縮合
題 名 | Estimation of Growth Parameters of Two Species of Mackerel, Scomber Japonicus and S. Australasicus, in the Coastal Waters of Taiwan=臺灣近海白腹鯖及花腹鯖生長參數的估算 |
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作 者 | 曾萬年; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 21:4 1994.12[民83.12] |
頁 次 | 頁313-321 |
分類號 | 439.23 |
關鍵詞 | 白腹鯖; 花腹鯖; 電腦體長頻度分析; 季節性振盪的生長; 臺灣近海; Mackerel; Scomber japonicus; S. australasicus; Electronic length frequency analysis; ELEFAN; Seasonal growth oscillation; Taiwan; |
語 文 | 英文(English) |
中文摘要 | 本研究係根據1981~86年大型圍網船於臺灣東北部澎佳嶼至釣魚島附近海域所捕獲 的白腹鯖及花腹鯖的體長頻度分佈資料,利用ELEFAN (電腦體長頻度分析) 程式推算von Bertalanffy季節性振盪生長方程式之參數,以瞭解其生長特性。白腹鯖的生長參數估算結果 為:極限體長(L∞)=41.07cm,生長係數(K)=0.49year-1,體長為零的理論年齡(t0)=-0.3,季節性生 長振盪係數c=0.7,生長最低月份(WP)=0.30。在花腹鯖的情形: L∞=44.95cm, K=0.71 year-1, t0=-0.2,C=0.7,WP=0.28。C值很大,顯示兩種魚有極明顯的季節性振盪的生長現象。生長 停滯期為二月中至三月初,此與生活史之越冬產卵期極為吻合。花腹鯖的極限體長和生長係 數皆比白腹鯖者大,顯示臺灣近海比較適合花腹鯖的生長。 |
英文摘要 | The seasonal oceillating von Bertalanffy growth equation of Scomber japonicus and S. australasicus was simulated with ELEFAN (Electronic Length Frequency Analysis) teehnique, basced on the length-frequency data collected from the large purse seiners in the waters off northeastern Taiwan, 1981-1986. The growth parameters of S. japonicus were estimated to be L∞ =41.07cm, K=0.49 year-1, t0=-0.3, C (seasonal oscillation amplitude)=0.7 and WP (winter point)=0.30; while those of S. australasicus estimated to be L∞=44.95cm, K=0.71 year-1, t0=-0.2, C=0.7 and WP=0.28.The great c-value indicated that both species display strong seasonal growth oscillation. The lowest growth period of the year was from mid February through early March (WP=0.28 and 0.30), which corresponds to the overwintering and spawning season of the fish's life history. Both L∞ and K indicated that the coastal waters of Taiwan was more suitable for the growth of Scomber australasicus than S. japonicus. |
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