上海海洋大学学报2013，Vol.22Issue(1)：120-127,8.
北大西洋大青鲨年龄和生长初步研究
A preliminary study on age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean
摘要
Abstract
The blue shark Prionace glauca, is broadly distributed in temperate and tropical waters of the Atlantic Ocean, and is the main by-catch species in tuna long line fishery. A total of 524 (328 males, 196 females) blue sharks were sampled from Chinese tuna long line fisheries in the North Atlantic Ocean(48° to 52°N/15° to 34°W , 3° to 15°N/34° to 40°W) from October 2010 to March 2011. Whole vertebrae of 51 males (104 -256 cm) and 52 females (135 -211 cm) were used to age for blue shark. Based such information from these samples, the age-growth of blue shark was analyzed in this study. The results showed that the relationship between fork length and vertebral radius for both sexes was as follows: LF = 192. 8 Rv0'837 (n = 117,R2 =0.91). Males were aged to 11 years (256 cm) and females were 7 years (211 cm). The index of average percentage error (IAPE) ranged from 0 -3. 58% for 1 -11 years. Parameters derived from observed length-at-age data for males and females were best to describe the growth of the blue shark. The von Bertalanffy growth parameters were; L ∞=289.4cm, k=0.16, t0 = -1.61 for males, and L∞=308.3 cm, k = 0. 13, t0 = -1. 77 for females; differences in growth were found between sexes. The longevity for males and females were 21. 3a and 17. La, respectively.关键词
大青鲨/年龄和生长/北大西洋Key words
Prionace glauca/ age and growth/ North Atlantic Ocean分类
农业科技引用本文复制引用
高春霞,戴小杰,吴峰,许友伟..北大西洋大青鲨年龄和生长初步研究[J].上海海洋大学学报,2013,22(1):120-127,8.基金项目
农业部三大洋金枪鱼观察员项目(08-54) （08-54）
上海市捕捞学重点学科建设项目(S30702) （S30702）
