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首页> 外文期刊>Cybium >Allometric relationships between fish length and otolith length for three Anguilliformes in northern coast of Tunisia (Central Mediterranean)
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Allometric relationships between fish length and otolith length for three Anguilliformes in northern coast of Tunisia (Central Mediterranean)

机译：突尼斯北部海岸（地中海中部）的三种An形鱼类的鱼长与耳石长之间的异形关系

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摘要

A sample of 36 Gnathophis mystax (Delaroche, 1809), 198 Conger conger (Linnaeus, 1758), and 61 Muraena helena Linnaeus, 1758, caught with longlines or by trawling in the coastal waters of northeastern Tunisia, was collected from December 2008 to December 2010. In both congrid species, G. mystax and C. conger, otolith mass and fish length are strongly related by a power function, with high correlation coefficients (r = 0.885 and 0.927, respectively). However, for M. helena the r value is significantly lower (r = 0.79). The same is true for the relationship between the length of the anteroposterior axis of the otolith and fish length. In all three species, the relationship between otolith mass and fish length has an allometric coefficient b inferior to 3. Similarly, the value of b' is inferior to 1 within the relationship between the length of the anteroposterior axis of the otolith and fish length. In all cases, the calcified structures show a negative allometric growth. However, inter-specific differences are observed, which could be related to ontogeny and life-history traits of the species.
机译：从2008年12月至2007年12月，在延绳钓或拖网捕捞的过程中，收集了36头Gnathophis mystax（Delaroche，1809年），198 Conger conger（Linnaeus，1758年）和61头Muraena helena Linnaeus（1758年），它们被延绳钓或拖网捕捞。 2010年。在这两个松散物种中，my.tax和C. conger的耳石质量和鱼的长度都与幂函数密切相关，具有较高的相关系数（分别为r = 0.885和0.927）。但是，对于M. helena，r值明显更低（r = 0.79）。对于耳石的前后轴的长度与鱼的长度之间的关系也是如此。在这三个物种中，耳石质量与鱼的长度之间的关系均具有小于3的异速系数b。类似地，在耳石的前后轴长度与鱼的长度之间的关系中，b'的值小于1。在所有情况下，钙化结构均显示负的异速生长。但是，观察到种间差异，这可能与该物种的个体发育和生活史特征有关。

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