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首页> 外文期刊>Fisheries Science >Changes in growth characteristics of the small abalone Haliotis diversicolor (Reeve, 1846) after one decade in a closed culture system: a comparison with wild populations
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Changes in growth characteristics of the small abalone Haliotis diversicolor (Reeve, 1846) after one decade in a closed culture system: a comparison with wild populations

机译：封闭培养系统中十年后小鲍鱼杂色鲍鱼（Reeve，1846）生长特征的变化：与野生种群的比较

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摘要

Small abalone Haliotis diversicolor (Reeve, 1846) is one of the smallest commercial abalone in the world. The successful application of artificial propagation and mass seed production techniques since the 1980s have resulted in the establishment of well-developed culture systems for small abalone in Taiwan. In the study reported here, we estimated the growth of a population of small abalone after a decade in a closed culture system and its growth characteristics with those of wild populations reported in previous studies. The von Bertalanffy growth equations of the shell length (L) and body weight (W) of cultured abalone were L t = 71.73 (1 − e−0.84 (t−0.16)) and W t = 47.70 (1 − e−0.84 (t−0.16))3.180, respectively. The instantaneous rate of change for weight had an inflection point at the age of 1.54 years, indicating that cultured abalones reach their apex of body growth around this age. Compared with the wild populations, the cultured population exhibits a significantly smaller maximal shell length (L ∞) and a significantly larger growth coefficient (k). Based on our results, it appears that the artificial culture of generations of small albalone for one decade or more in a closed system could be one of the major factors causing the observed minimization of size in the cultured abalone; this may be an adaptation in which growth is traded off for the larger k. Key words Closed fish culture system - Growth characteristics - Small abalone - Taiwan - Tradeoff - Von Bertalanffy model
机译：小鲍鱼Haliotis diversicolor（Reeve，1846）是世界上最小的商业鲍鱼之一。自1980年代以来，人工繁殖和大量种子生产技术的成功应用导致台湾建立了发达的小鲍鱼养殖系统。在这里报告的研究中，我们估计了封闭培养系统中十年后小鲍鱼种群的生长及其与先前研究报告的野生种群的生长特征。养殖鲍鱼的壳长（L）和体重（W）的von Bertalanffy生长方程为L t = 71.73（1- e -0.84（t-0.16））和W t = 47.70（1- e -0.84（t-0.16）） 3.180 。体重的瞬时变化率在1.54岁时出现拐点，表明养殖鲍鱼在该年龄左右达到了身体生长的顶点。与野生种群相比，养殖种群的最大壳长（L ∞）小得多，而生长系数（k）大得多。根据我们的研究结果，在封闭的系统中对数代小鲍鱼进行人工培养长达十年或更长时间似乎是导致所观察到的鲍鱼体型最小化的主要因素之一。这可能是一种适应，其中将增长权衡为较大的k。关键词封闭式鱼类养殖系统-生长特征-小鲍鱼-台湾-权衡-冯·贝塔朗菲模型

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