原生和引进鲤科鱼类营养生态位的季节变化和生态位重叠

IF 1.1 4区 化学 Q3 SPECTROSCOPY
Nehir Kaymak, N. Emre, F. B. Yalım, Cihan Toslak, Y. Emre, Ş. Akın
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引用次数: 1

摘要

了解非本地物种的潜在影响,特别是对生态相似的本地物种的潜在影响,揭示它们之间的营养关系至关重要。阿克苏河上游Karacaören I水库引进了鲤科入侵鱼、异种鲫鱼(carprinus carpio)和易位鱼。Karacaören水库也是本地鲤科鱼类(Capoeta antalyensis和Squalius fellowesii)的重要栖息地。本研究利用同位素比质谱仪测量的稳定C和N同位素,对鲤科鱼类的营养结构和种间营养相互作用(同位素生态位和生态位重叠)进行了评价。虽然所有食物来源在夏季对所有鱼类的生物量都有同样的贡献,但在冬季,它们的生物量得到了更专门的来源的支持。结果表明,夏季柽柳与柠条、柠条与柠条、柠条与柠条生态位重叠增加,生态位宽度增大,冬季生态位重叠减少;种间竞争导致了营养生态位分化,这可能促进了本地物种与引进鱼类的共存。非本地鱼类被确定具有更大的生态位宽度,这可能有助于它们的入侵成功。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seasonal variation in trophic niches and niche overlap between native and introduced cyprinid fishes
Abstract It is critical to understand the potential effects of non-native species, especially on ecologically similar native species, and to reveal their trophic relationships. Cyprinid invasive fishes, Carassius gibelio, and translocated fish Cyprinus carpio has been introduced to the Karacaören I reservoir located in the upstream reach of the Aksu River basin. Karacaören reservoir is also an important local habitat for native Cyprinid fishes, Capoeta antalyensis and Squalius fellowesii. In this study, we evaluated the trophic structure and interspecies trophic interactions (as isotopic niches and niche overlaps) of these Cyprinid fish using stable C and N isotopes analysis as measured by Isotope Ratio Mass Spectrometer. While equally all food sources contributed to the biomass of all fish species in the summer, their biomass is supported by more specialized sources in the winter season. Our results revealed increased niche breadth with increased niche overlap between C. antalyensis and C. gibelio, and C. carpio, and among C. gibelio and C. carpio in the summer, while decreased niche breadth with decreased niche overlap in the winter season. Interspecific competition has led to trophic niche divergence, which may facilitate the coexistence of native species with introduced fishes. Non-native fish were determined to have larger niche widths, which may contribute to their invasion success.
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来源期刊
Spectroscopy Letters
Spectroscopy Letters 物理-光谱学
CiteScore
2.90
自引率
5.90%
发文量
50
审稿时长
1.3 months
期刊介绍: Spectroscopy Letters provides vital coverage of all types of spectroscopy across all the disciplines where they are used—including novel work in fundamental spectroscopy, applications, diagnostics and instrumentation. The audience is intended to be all practicing spectroscopists across all scientific (and some engineering) disciplines, including: physics, chemistry, biology, instrumentation science, and pharmaceutical science.
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