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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Stock characteristics and management insights for common carp (Cyprinus carpio) in Anatolia: a review of weight-length relationships and condition factors.
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Stock characteristics and management insights for common carp (Cyprinus carpio) in Anatolia: a review of weight-length relationships and condition factors.

机译：安纳托利亚鲤鱼的种群特征和管理见解：体重长度关系和条件因素的回顾。

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摘要

The common carp (Cyprinus carpio) is a species of primary importance for commercial inland fisheries of Anatolia, where it is native to some areas but has become almost ubiquitous due to historical translocations. Yet, there are concerns that this 'semi-naturalised' species can ultimately pose a threat to aquatic ecosystems, especially when present at high biomass levels. For estimating the latter, knowledge of length-weight relationship (WLR) and condition factor (K) parameters is needed, and these also represent useful indicators of fish population dynamics in general. In this study, WLR and K parameter values from published literature data were comprehensively reviewed for 68 and 75 common carp stocks, respectively, from 52 water bodies across Anatolia, which were surveyed between 1953 and 2011. Overall, Anatolian common carp stocks were characterised by slightly negative allometric growth, which became more pronounced in some over-exploited stocks and/or under critical conditions of pollution and water quality. This tendency to negative allometric growth was unlike other stocks world-wide, which showed isometric growth. Also, no altitudinal gradients were detected in the parameters under study and only slight differences amongst waterbody types (i.e. man-made lakes, natural reservoirs and water courses) were revealed (possibly a result of biassed sampling). It is argued that the level of nativeness present in Anatolian common carp stocks may be responsible for the observed patterns and differences relative to domesticated/feral common carp stocks introduced to non-native areas world-wide. This finding should be accounted for when evaluating ecological benefits vs economic losses of intervention measures for control.
机译：鲤鱼（Cyprinus carpio）对安纳托利亚的商业内陆渔业而言是最重要的物种，该国原产于某些地区，但由于历史易位而几乎无处不在。然而，令人担忧的是，这种“半自然化”物种最终可能对水生生态系统构成威胁，特别是当存在于高生物量水平时。为了估计后者，需要了解长度-重量关系（WLR）和条件因子（K）参数，并且这些参数通常也代表了鱼类种群动态的有用指标。在这项研究中，分别从1953年至2011年间对安纳托利亚全境52个水域进行调查的68种和75种鲤鱼种群的公开文献数据中的WLR和K参数值进行了全面回顾。异速生长略有负增长，在一些过度开采的种群中和/或在污染和水质的关键条件下变得更加明显。负等速增长的趋势不同于全球其他股票，后者表现出等速增长。而且，在所研究的参数中未检测到海拔梯度，并且仅揭示了水体类型（即人造湖，天然水库和水道）之间的细微差异（可能是有偏差采样的结果）。有人认为，安纳托利亚鲤鱼种群的本地化水平可能是所观察到的模式和与引入全球非本地地区的驯养/野生鲤鱼种群有关的差异的原因。在评估控制干预措施的生态效益与经济损失时，应考虑到这一发现。

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