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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >The Diet Composition and Trophic Position of Introduced Prussian Carp Carassius gibelio (Bloch, 1782) and Native Fish Species in a Turkish River
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The Diet Composition and Trophic Position of Introduced Prussian Carp Carassius gibelio (Bloch, 1782) and Native Fish Species in a Turkish River

机译：土耳其河中引入的普鲁士鲤鱼Car鱼（Bloch，1782年）和本地鱼类的饮食组成和营养位置

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摘要

Carbon and nitrogen stable isotope analyses were carried out to determine the diet composition and trophic position of the invasive species Carassius gibeho to help understand the potential impact of this species on the native fish fauna in the Karamenderes River, northwest Turkey. Filamentous algae were the most important diet component according to stable isotope mixing models. Filamentous algae and detritus formed also considerable part of the gut contents. The trophic position of C. gibeho was 2.43 +/- 0.5, 2.04 +/- 0.4 and 3.35 +/- 0.5 estimated by three different methods. The trophic niche width of this invasive species was larger than those of the native species. Our results indicate that the high dietary plasticity of C. gibelio and its lower trophic position than the other fish community members, can contribute to its success as an invasive species.
机译：进行了碳和氮稳定同位素分析，以确定入侵物种Car鱼（Carassius gibeho）的饮食组成和营养位置，以帮助了解该物种对土耳其西北部Karamenderes河本地鱼类区系的潜在影响。根据稳定的同位素混合模型，丝状藻类是最重要的饮食成分。丝状藻类和碎屑也构成了肠内容物的相当一部分。通过三种不同的方法估计，吉贝糖衣藻的营养位置为2.43 +/- 0.5、2.04 +/- 0.4和3.35 +/- 0.5。该入侵物种的营养生态位宽度大于原生物种。我们的结果表明，C。gibelio的高膳食可塑性和比其他鱼类群落成员更低的营养位置，可有助于其作为入侵物种的成功。

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