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題名 | Age, Growth and Reproduction of the Tile Fish Branchiostegus Japonicus in the Waters Around Guei-Shan Island, Northeastern Taiwan=龜山島附近海域日本馬頭魚之年齡與成長及生殖之研究 |
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作者 | 劉光明; 陳文深; 陳哲聰; Liu, Kwang-ming; Chen, Wen-shen; Chen, Che-tsung; |
期刊 | 臺灣水產學會刊 |
出版日期 | 19961200 |
卷期 | 23:4 1996.12[民85.12] |
頁次 | 頁267-278 |
分類號 | 388.5 |
語文 | eng |
關鍵詞 | 日本馬頭魚; 年齡; 成長; 生殖; 耳石; Branchiostegus japonicus; Age and growth; Reproduction; Otolith; |
中文摘要 | 本研究以耳石為年齡形質探討龜山島附近海域之日本馬頭魚Bramchiostegus japonicus的年齡、成長及生殖。1993年12月至1994年11月間於大溪魚市場,共採集417尾 標本。體長與耳石徑之關係,雌魚為L=40.12+49.70R,雄魚為L=35.0+54.87R。耳石邊緣成 長率的月別變化得知一年形成一輪,形成期為1月至2月間。雌、雄最高均可讀至8輪。體 重與體長之關係,雌魚為W=2.634x10-6x L3.249,雄魚為W=4.042x10-6x L3.169。雌魚之成長參 數:極限體長(L∞)=425.4mm,成長速率(K)=0.195/yr,體長為零之理論年齡 (t0)=-0.817yr;雄:L∞=471.2mm,K=O.186/yr, t0=-0.831 yr。生殖期為5-11月;5-6 月及9-10月是生殖高蜂。生殖腺指數與肥滿度、肝臟指數的月別變化大略一致,顯示生殖行 為會影響肥滿度。空胃率與生殖期有關。肝臟指數月變化為生殖期之指標。雌雄比約1: 1,且隨體長增大,雌魚比率有降低之趨勢。 |
英文摘要 | Age and growth of the tile fish, Branchiostegus japonicus, was estimated by examination of the annuli in otoliths of 417 individuals. The relationship between total length (L, mm) and otolith radius (R, mm) for females was L=40.12+49.7R, for male L=35.0+54.87R. Marginal increment indicated that annulus was formed once a year between January and February. The relationship between body weight (W) and total length for female was W=2.634 x 10-6 L3.249, for male W=4.042 x 10-6 L3.169. The parameters of von Bertalanffy growth equations were estimated as L∞=425.5 mm, K=0.195/yr, to=-0.817 yr for female and L∞=471.2 mm, K=0.186/yr, to =-0.831 yr for male. The spawning period was from May to November with two peaks in May to June and in September to October, respectiviely. The monthly changes between condition factor and gonadal indices were consistent, suggesting that spawning behavior affects condition factor. The sex ratio of the fish is close to 1:1 and the percentage of female decreased with increasing total length. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。