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首页> 外文期刊>Ecological research >Ecological niche differentiation of two salamanders (Caudata: Hynobiidae) from Hokkaido Island, Japan
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Ecological niche differentiation of two salamanders (Caudata: Hynobiidae) from Hokkaido Island, Japan

机译：日本北海道岛的两种蝾螈（Caudata：Hynobiidae）的生态利基分化

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摘要

Understanding environmental factor determining ecological niche is very important to elucidating the distribution of species, and also revealing how closely related species are able to coexist in a particular region. Here, we applied ecological niche modeling to develop the ecological niches of two hynobiid salamanders: Salamandrella keyserlingii and Hynobius retardatus which are co-occurring on Hokkaido Island, Japan. We, then, tested hypotheses about ecological niche differentiation between the two species. Our models showed that the potential distribution of S. keyserlingii was strictly limited to a small area at Kushiro Marsh, while the suitable distribution of H. retardatus was covered widely on Hokkaido Island. The results revealed the little geographic range overlap and the differentiation on the requirements of the ecological condition between the two species. We found nonequivalent niches in identity tests and counterintuitive results in background tests, indicating that S. keyserlingii has used a habitat subset of H. retardatus. Overall, our result contributed to understand the ecological niche space, and suggest the historical formation of these species on Hokkaido Island. The models can also be used to aid conservation purposes, such as habitat management, planning and designation of protected areas.
机译：了解生态利基的环境因素对于阐明物种分布非常重要，以及揭示了相关的物种能够在特定区域中共存有多密切相关。在这里，我们应用了生态利基型建模，开发了两种瑞奈比蝾螈的生态龛：萨拉曼德拉凯斯特林氏菌和乌纳比乌斯·雷达特（Hynobius Restardatus）在日本北海道岛上共同发生。然后，我们测试了关于两种物种之间生态利基分化的假设。我们的模型表明，S. Keyserlingii的潜在分布严格限制在Kushiro Marsh的一个小面积，而H.Rearatus的合适分布在北海道岛上广泛覆盖。结果表明，小型地理范围重叠和对两种物种之间生态状况要求的差异。我们在身份测试中发现了非相机的利基，并在后台测试中导致逆行结果，表明S. Keyserlingii使用了H. Retardatus的栖息地子集。总体而言，我们的结果有助于了解生态利基空间，并建议在北海道岛上的这些物种的历史形成。该模型也可用于帮助保护目的，例如栖息地管理，规划和指定保护区。

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