Co‐existence with non‐native brook trout breaks down the integration of phenotypic traits in brown trout parr
Co‐existence with non‐native brook trout breaks down the integration of phenotypic traits in brown trout parr
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与非本地溪鳟鱼共存破坏了褐鳟鱼表型性状的整合
DOI：
10.1111/1365-2435.12862
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发表时间：
2017
影响因子：
5.2
通讯作者：
Johnsson
中科院分区：
文献类型：
--
作者：
Závorka;Cucherousset;Näslund;Aldvén;Höjesjö;Fleming;I. A. ;Johnsson
表型综合征是指生物体中功能相关特征之间的复杂整合模式，它定义了生物体如何与环境相互作用并维持自身。人类诱导的生物入侵已成为环境改变的重要来源。然而，入侵物种在多大程度上影响原住民个体的表型综合征目前尚不清楚。这些知识对于理解生态相互作用和生物入侵的管理具有重要的意义。在这里，自然溪流中的野外监测与行为、生理和形态性状的标准化估计相结合，以解决与非本地入侵者共存引起的新的环境压力的假设，该环境压力破坏了本地物种表型性状之间的适应性整合。我们比较了异地分布的一组本地褐鲑鱼(Salmo Trutta)和一组与非本地溪鱼(Salvelinus Fontinalis)共处的褐鲑鱼的关键表型性状(即有氧范围、标准代谢率、身体生长、活动和体型)和生态位性状(即春夏季食物、栖息地大小、日常活动)之间的整合强度。我们发现，共域褐鲑鱼的表型性状整合显著减少，异地和共域褐鲑鱼在关键表型和生态位性状上存在差异。褐鲑鱼与非本地溪鱼共同生活，吃更多的陆生猎物，栖息地更小，体型更结实。共域褐鲑鱼的特定生长率也较低，这表明其适合度较低。结果与我们的假设基本一致，即共域褐鲑鱼的适合度降低是由其适应表型综合征的崩溃引起的。这可能是由于表型性状对外来物种诱导的新选择压力的可塑性不同造成的。我们的结果可能有助于解释在没有与本地物种直接竞争的情况下报告的非本地物种的有害影响。
A phenotypic syndrome refers to complex patterns of integration among functionally related traits in an organism that defines how the organism interacts with its environment and sustains itself.Human‐induced biological invasions have become important sources of environmental modifications. However, the extent to which invasive species affect the phenotypic syndromes of individuals in a native is currently unknown. Such knowledge has important implications for understanding ecological interactions and the management of biological invasions.Here, field monitoring in a natural stream were combined with standardized estimates of behavioral, physiological and morphological traits to address the hypothesis that coexistence with a non‐native invader induces a novel environmental pressure that disrupts the adaptive integration among phenotypic traits of the native species. We compared the strength of integration among key phenotypic traits (i.e. aerobic scope, standard metabolic rate, body growth, activity, and body shape) and ecological niche traits (i.e. spring and summer diet, home range size, daily movements) of an allopatric group of native brown trout (Salmo trutta) with a group of brown trout living in sympatry with non‐native brook trout (Salvelinus fontinalis).We found that the integration of phenotypic traits was substantially reduced in the sympatric brown trout and that allopatric and sympatric brown trout differed in key phenotypic and ecological niche traits. Brown trout living in sympatry with non‐native brook trout consumed more terrestrial prey, had smaller home ranges, and a stouter body shape. Sympatric brown trout also had lower specific growth rate, suggesting a lower fitness.The results are generally in line with our hypothesis suggesting that the reduction in fitness observed in sympatric brown trout is caused by the breakdown of their adaptive phenotypic syndrome. This may be caused by differences in the plasticity of the response of phenotypic traits to the novel selection pressure induced by the non‐native species. Our results may help explaining deleterious effects of non‐native species reported in the absence of direct competition with the native species.A lay summary is available for this article.
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影响因子：
2.6
作者：
C. Murren
通讯作者：
C. Murren
特定的生态位特征有助于外来鱼类入侵者入侵北方溪流
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
K. Korsu;J. Heino;A. Huusko;T. Muotka
通讯作者：
T. Muotka
影响因子：
2.4
作者：
Dingemanse, NJ;de Goede, P
通讯作者：
de Goede, P
美国犹他州北部河流中非本地褐鳟鱼 Salmo trutta 和本地邦纳维尔切喉鳟鱼 Oncorhynchus clarkii utah 的营养关系
影响因子：
1.4
作者：
Peter Mchugh;P. Budy;G. Thiede;E. VanDyke
通讯作者：
E. VanDyke
影响因子：
16.8
作者：
Killen, Shaun S.;Marras, Stefano;Domenici, Paolo
通讯作者：
Domenici, Paolo