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水產研究(1993年創刊)

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  • 點閱: 2528
  • 日期: 2019-10-17
水產研究(1993年創刊)-臺灣東部海域釣獲赤鯥之體長組成與生殖研究
主題: 臺灣東部海域釣獲赤鯥之體長組成與生殖研究
摘要(中):
赤鯥 (Doederleinia berycoides) 分布於臺灣東北部、東部及西南部沿海,主要棲息於水深200 ~ 400 m,屬於底棲性魚種。本研究主要針對臺灣東部海域底延繩釣漁獲之赤鯥進行體長組成及生殖研究。採樣期間自2013年5月至2014年9月,每月由底延繩釣標本船蒐集漁獲物,總計測量 1,058 尾樣本之體長、體重及生殖腺重。體長 (FL) 介於 14.7 ~ 41.3 cm,體重 (BW) 介於 70 ~ 1,100 g;其中雌魚 721 尾 (FL 31.8 ± 2.9 cm;BW 473.2 ± 133.6 g),雄魚 337 尾 (FL 24.2 ± 2.0 cm;BW 207.3 ± 46.0 g)。總性比為 68.1 %,所採樣本雌魚體型比雄魚大,28 cm 以上的大型魚以雌魚為主。雌魚及雄魚 FL 與 BW 之迴歸關係分別為:BW = 4.09 × 10-2FL2.70、BW = 9.52 × 10-2FL2.41 ,經共變積分析 (ANCOVA) 檢定結果顯示,雌魚及雄魚之間有顯著差異。雌魚和雄魚的生殖腺成熟指數 (GSI) 分別介於 0.20 ~ 28.62,0.04 ~ 4.03,由 GSI 月別變化顯示,雌性和雄性在 8 ~ 10月間有一個高峰存在,最高峰值出現在 9 月,因此推測 8 ~ 10月間為本種生殖期。
出版日期: 2016/6/30
標題title(英): Size Composition and Gonadosomatic Index of Rosy Seabass (Doederleinia berycoides) Caught by Bottom Longline Fishery in Waters off Eastern Taiwan
作者: 吳允暉‧周爰瑱‧吳瑞賢‧鄭明忠‧許紅虹‧何源興
卷別: 24
期別: 1
頁碼: 1-11
作者 auther(英): Yun-Hui Wu, Yuan-Tian Chou, Jui-Hsien Wu, Ming-Chung Cheng, Hung-Hung Hsu and Yuan-Hsing Ho
摘要abstract(英): The rosy seabass (Doederleinia berycoides) is a commercial fishery targeted demersal species which lives in the northeastern, eastern and southwestern waters off Taiwan at depths ranging from 200 to 400 m. This study focused on the length composition and reproduction of rosy seabass specimens caught by bottom longline fishery off the eastern Taiwan waters. From May 2013 to September 2015, a total of 1058 rosy seabass were caught, and all of these specimens were measured for fork length (FL, 14.7~41.3 cm), body weight (BW, 70~1,100g) and gonad weight (GW). There were 721 female (31.8 ± 2.9 cm FL; 473.2 ± 133.6 g BW) and 337 male (24.2 ± 2.0 cm FL; 207.3 ± 46.0 g BW) specimens, for an overall sex ratio of 68.1 %. The average body size of the female specimens was larger than that of the males, and most of the fish with a FL larger than 28 cm were females. The relationship between BW and FL of female and male was BW = 4.09 × 10-2FL2.70 and BW = 9.52 × 10-2FL2.41, respectively. The monthly variation in the gonadosomatic index (GSI) showed that the value was high between August and October (for both females and males) and that it peaked in September. Therefore, it is postulated that the spawning period occurs between August and October.
使用語言: 中文
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