首页> 美国卫生研究院文献>other >Longevity of Atlantic Sharpnose SharksRhizoprionodon terraenovae and Blacknose SharksCarcharhinus acronotus in the western North Atlantic Ocean based on tag-recapture data and direct age estimates
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Longevity of Atlantic Sharpnose SharksRhizoprionodon terraenovae and Blacknose SharksCarcharhinus acronotus in the western North Atlantic Ocean based on tag-recapture data and direct age estimates

机译:大西洋长鼻鲨的寿命根瘤菌和黑鼻鲨基于标签捕获数据和直接年龄估计的北大西洋西部的尖尾鱼

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摘要

Longevity of Rhizoprionodon terraenovae and Carcharhinus acronotus in the western North Atlantic Ocean was examined using direct age estimates from vertebral sections and tag-recapture data. Time-at-liberty ranged from 7.7-14.0 years (mean =10.1) for R. terraenovae and 10.9-12.8 years (mean =11.9) for C. acronotus. Maximum estimated longevity was determined to be 19.8 years through tag-recapture data and 18.5 years from direct age estimates for R. terraenovae and 22.8 years through tag-recapture data and 20.5 years through direct age estimates for C. acronotus. These longevity estimates represent a large increase over previous estimates and may have significant effects on analyses that depend on longevity including lifetime fecundity, mortality rates, demographic analyses and stock assessments.
机译:使用来自椎骨切片的直接年龄估计值和标签捕获数据,检查了北大西洋西部大地带根菌和猴头鲨的寿命。陆地象鼻虫的自由时间为7.7-14.0年(平均= 10.1),而肩峰梭菌的自由时间为10.9-12.8年(平均= 11.9)。通过标记物捕获数据确定最大估计寿命为19.8年,从R. terraenovae的直接年龄估计数确定为18.5年,通过标记捕获数据确定最大寿命为22.8年,而对尖顶角锥虫的直接年龄估计为20.5年。这些寿命估算值比以前的估算值有了很大的提高,并且可能会对依赖寿命的分析产生重大影响,这些分析包括寿命,生育率,人口统计学和种群评估。

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