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首页> 外文期刊>Fisheries Research >Age and growth of big skate (Raja binoculata) and longnose skate (Rajarhina) in British Columbia waters
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Age and growth of big skate (Raja binoculata) and longnose skate (Rajarhina) in British Columbia waters

机译：不列颠哥伦比亚省水域大型滑冰（Raja binoculata）和长鼻滑冰（Rajarhina）的年龄和生长

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摘要

Age and growth estimates were determined for big skate (Raja binoculata) and longnose skate (Raja rhina) from British Columbia waters. Vertebrae (centra) were collected from 242 big skate and 174 longnose skate, ranging in length from 166 to 2039 mm, and 186 to 1246 mm, respectively. Male and female big skates ranged in age from 0 to 25 and 0 to 26 years, and male and female longnose skates ranged from 0 to 23 and 0 to 26 years, respectively. These ages are much older than those previously reported. Logistic and von Bertalanffy growth models were developed for males and females of both species. The growth curves were similar to previous estimates for both big and longnose skate for the range of sizes and ages that were previously available. However, because of the broader ranges presented in this paper, the growth curve estimates provided here are larger and older theoretical maximum sizes and ages. The data provided here are the only published estimates of size and age at 50% maturity for both species.
机译：确定了不列颠哥伦比亚省水域的大滑冰（Raja binoculata）和长鼻滑冰（Raja rhina）的年龄和生长估计。椎骨（中央）是从242个大滑冰鞋和174个长鼻滑冰鞋中收集的，长度分别为166至2039毫米和186至1246毫米。男女大轮滑鞋的年龄分别为0至25岁和0至26岁，男女长鼻轮滑鞋的年龄分别为0至23岁和0至26岁。这些年龄比以前报道的年龄大得多。为两种物种的雄性和雌性开发了Logistic和von Bertalanffy生长模型。在以前可获得的尺寸和年龄范围内，大号和长号溜冰鞋的生长曲线与先前的估计相似。但是，由于本文介绍的范围较广，因此此处提供的增长曲线估计值更大且更老，理论上最大的大小和年龄也更大。此处提供的数据是两种物种在50％成熟度时唯一公开的大小和年龄估计。

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