入侵的西方蚊子鱼（Gambusia affinis）与本地平原芒鱼（Fundulus sciadicus）之间种内和种间竞争的实验测试

IF 2.8 2区生物学 Q2 ECOLOGY Freshwater Biology Pub Date : 2024-06-28 DOI:10.1111/fwb.14295

Samuel T. Lewis, Jonathan D. Salerno, John S. Sanderson, Yoichiro Kanno

引用次数: 0

摘要

入侵物种是淡水保护的主要威胁。物种在入侵生境中的共存取决于种内竞争与种间竞争的相对强度，其中入侵物种对本地物种的种间竞争往往强于种内竞争，从而危及物种的共存。在本研究中，我们进行了一项实验室实验，以测试在三种实验温度下，本地平原塘鲉（Fundulus sciadicus）与入侵的西方蚊子鱼（Gambusia affinis）之间干扰竞争的相对强度。采用等距法量化了种内和种间竞争，等距法假定动物的理想分布是为了最大限度地提高其适应性。因此，它们的分布可以衡量栖息地斑块的质量和数量。此外，我们还通过行为观察来了解种内和种间竞争。与我们的预测相反，我们没有发现证据表明从入侵的蚊子鱼到本地的平原塘鲉之间的竞争是不对称的。相反，与异种竞争相比，同种竞争中有更多个体占据了它们共同喜欢的栖息地（一个缓慢流动的水池），而且等光度分析表明，在所有温度水平下，种内干扰竞争都明显强于种间竞争。行为观察证实了这一生境选择分析结果，即在同域中，平原塘鲉的攻击行为最为频繁。这项研究表明，成鱼被广泛认为具有攻击性可能不是蚊子鱼成功入侵全球的唯一关键机制。其他生态特征，如快速繁殖、环境耐受性以及与本地物种早期生命阶段的相互作用，也可能是它们成功入侵的原因。还需要进行更多的调查，以确定它们的入侵是直接影响本地物种，还是伺机入侵退化的生态系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

摘要图片

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

An experimental test of intra- and inter-specific competition between invasive western mosquitofish (Gambusia affinis) and native plains topminnow (Fundulus sciadicus)

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.