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首页> 外文期刊>Marine biology >Growth of Chaetodon larvatus (Chaetodontidae: Pisces) in the southern Red Sea
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Growth of Chaetodon larvatus (Chaetodontidae: Pisces) in the southern Red Sea

机译：红海南部Chaetodon larvatus（Chaetodontidae：Pisces）的生长

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Growth and age of Chaetodon larvatus were studied using growth bands in otoliths and length-frequency analyses. Otoliths of 180 C. larvatus were extracted and measured. Polished sections of sagittae revealed alternating opaque and translucent bands corresponding with a seasonal growth pattern. Both mass and size of the otoliths continue to grow steadily throughout life. Length-at-age data revealed very fast growth during the first year. Growth proceeded at a decreasing rate during the second and the third year; fishes older than 3 years did not grow noticeably. No difference in growth patterns between males and females could be detected. The growth parameters obtained for the whole population are: the asymptotic length (L_∞) = 10.64 cm, growth constant (K)= 1.14 year~(-1) and the theoretical age at length zero (t_0) = -0.30 year. The maximum age recorded was 14 years. Length frequency data collected at a recruitment site confirmed the fast growth of juveniles.
机译：利用耳石中的生长带和长度频率分析研究了Chaetodon幼虫的生长和年龄。提取并测量180只幼虫的耳石。射手座的抛光部分显示出交替的不透明和半透明带，对应于季节性生长模式。耳石的质量和大小在整个生命中都持续稳定增长。年龄长度数据显示，第一年的增长非常快。在第二年和第三年，增长速度一直在下降； 3岁以上的鱼类没有明显生长。男性和女性之间的生长方式没有差异。获得的整个种群的生长参数为：渐近长度（L_∞）= 10.64 cm，生长常数（K）= 1.14年〜（-1），长度为零的理论年龄（t_0）= -0.30年。记录的最大年龄为14岁。在招募地点收集的长度频率数据证实了少年的快速成长。

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