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題 名 | Shoal Density, Distribution and Fluctuation Rhythm of Swordtip Squid Influenced by Mackerel and Hairtail in the Illumination Zone during the Light Fishing Operation=集魚燈下混雜魚種(鯖魚、白帶魚)對鎖管Loligo Edulis趨集特性影響之研究 |
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作 者 | 秦韶生; 李國添; 廖正信; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 23:2 1996.06[民85.06] |
頁 次 | 頁67-78 |
分類號 | 439.5 |
關鍵詞 | 鎖管; 超音波; 時序列分析; 稱間交互作用; Loligo edulis; Hydroacoustic; Time series; Interaction behaviour under luring light; |
語 文 | 英文(English) |
中文摘要 | 本省東北部鎖管燈火漁業在誘集魚群過程中,當有其掠食對象之魚種(幼鯖魚) 或掠食者(白帶魚)出現時,鎖管群除分布之縱深範圍會擴大外,其趨集或離散所形成之週 其亦會減短,顯示其在燈下周圍之循迴路徑或游速(即行為)受到明顯之影響。再者,其生 物現存量亦會隨之變動。故燈火漁業之集魚效果而言,除趨光性因素外,趨集魚種間之交互 作用亦不可忽視。 |
英文摘要 | During the light fishing operation in the coastal waters of northern Taiwan, the presence of mackerel (prey) and hairtail (predator) affected the squid shoal which increased the ranges of its vertical distribution and also shortened the cyclic frequency of its aggregation and dispersion to ward light sources. It indicated that the cyclic path and swimming speed of squid (phototactic behaviour) were heavily effected by the presence of prey and predator in the illumination zone. Furthermore, the shoal density of squid was also effected. In conclusion, the luring effects should include the influence by the interaction of fish species except the phototaxic instinct of squid in the illumination zone. |
本系統中英文摘要資訊取自各篇刊載內容。