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水產研究(1993年創刊)

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  • 點閱: 2249
  • 日期: 2019-07-19
水產研究(1993年創刊)-臺灣西南海域黑魚或之生殖生物學研究
主題: 臺灣西南海域黑魚或之生殖生物學研究
摘要(中):
黑䱛 (Atrobucca nibe) 為臺灣西南海域拖網漁業主要漁獲經濟魚種之一,本研究於2012年7月至2013年7月間,共採得871尾樣本,其中雌魚348尾、雄魚523尾,體長範圍為158 - 480 mm,體重範圍為42 - 1,247 g。雌魚全長 (TL) 與體重 (BW) 之迴歸關係式為BW = 2.0 × 10-5 TL2.925 (R2 = 0.974,n = 348)。本研究綜合肉眼觀察生殖腺外觀、組織切片、生殖腺指數等方法,得知本種生殖期為1 - 5月,生殖盛期為3 - 5月。本魚種平均孕卵數為247,426 ± 227,408粒,單次平均產卵數為57,576 ± 37,205粒,雌魚比列 (雌魚數/全部樣本數) 為0.40 (348/871),性比會隨著體長增加而增大,當體長大於300 mm時,雌魚數量優勢於雄魚。雌魚50% 性成熟體長為310 mm。成熟百分比與全長關係式為P = 1/(1+e6.29-0.02TL)。
出版日期: 2017/6/30
標題title(英): Reproductive Biology of Black Croaker (Atrobucca nibe) in the Waters off Southwestern Taiwan
作者: 蕭琍婷‧陳朝清‧吳春基‧陳羿惠‧何珈欣
卷別: 25
期別: 1
頁碼: 15-25
作者 auther(英): Li-Ting Hsiao, Chao-Ching Chen, Chun-Chi Wu, Yi-Hui Chen and Jia-Shin He
摘要abstract(英): The black croaker (Atrobucca nibe) is one of the important commercial species for trawl fisheries in southwestern Taiwan. Monthly samples of specimens taken from the trawl landings at Tongkang fishing port from July 2012 to July 2013 added up to a total of 871 specimens (348 females and 523 males). The total length (TL) and body weight (BW) of the collected fish ranged from 158 to 480 mm and from 43 to 1247 g, respectively. For females, the relationship between TL and BW was estimated as BW=2.0 × 10 -5 TL2.925 (R2=0.974, n = 348). Based on the macroscopic appearance, histological examination of ovaries, and gonadosomatic index, the spawning season for the black croaker in the coastal waters off southwestern Taiwan likely lasts from January to May and peaks from March to May. The mean fecundity and mean batch fecundity of this species were estimated as 247,426 ± 227,408 and 57,576 ± 37,205, respectively. The sex ratio (female/total) was 0.40, but females outnumbered males at TL ≥ 300 mm. The size (in TL) at 50% maturity (L50) was estimated to be 310 mm. Logistic curves describing the relationship between the proportion of maturity at each length interval and TL were estimated as P = 1/(1+e6.29 -0.02TL).
使用語言: 中文
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