坦桑尼亚乞力马扎罗山中生四纹草鼠新的高海拔记录

Floyd E. Hayes, Miranda Dodd, Valentin Moser
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摘要

尽管有几种啮齿类动物在非洲最高峰的高海拔高山生态系统中繁衍生息(Happold,2013 年),但它们的海拔上限却鲜为人知,因为大多数生物调查和自然史研究都发生在物种更为常见的低海拔地区。记录啮齿类物种的海拔上限对于更好地了解其行为、营养、生理、与气候变化相关的分布和形态变化以及在其分布范围上限与人类的相互作用非常重要(Moritz 等人,2008 年;Storz 等人,2010 年,2020 年;Beever 等人,2011 年;Rowe 等人,2014 年;Gebrezgiher 等人,2022 年;Saraiva & Grigione 2022 年)。中生四条纹草鼠 Rhabdomys dilectus(De Winton,1897 年)是该属目前公认的五个仅能通过分子特征区分的物种之一(Rambau 等人,2003 年;Castiglia 等人,2012 年;du Toit 等人,2012 年;Monadjem 等人,2015 年)。非洲南部和东部海拔较高地区的各种中生生态系统中都有不相连的种群(du Toit 等人,2012 年;Monadjem 等人,2015 年)。据报道,其最高海拔为乌干达或肯尼亚埃尔贡山的 4200 米(Clausnitzer & Kityo 2001;Happold, 2013),坦桑尼亚乞力马扎罗山的 4180 米(Clausnitzer & Kityo 2001;Happold, 2013)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New High Elevation Records for the Mesic Four-Striped Grass Rat Rhabdomys dilectus on Mount Kilimanjaro, Tanzania
Although several species of rodents thrive in high elevation alpine ecosystems on Africa’s highest peaks (Happold, 2013), their upper elevation limits are poorly known because most biological surveys and natural history studies occur at lower elevations where the species are more common. Documenting the upper elevation limits of rodent species is important to better understand their behavior, nutrition, physiology, distributional and morphological changes associated with climate change, and interactions with humans at the upper limits of their range (Moritz et al., 2008; Storz et al., 2010, 2020; Beever et al., 2011; Rowe et al., 2014; Gebrezgiher et al., 2022; Saraiva & Grigione 2022). The mesic four-striped grass rat Rhabdomys dilectus (De Winton, 1897) is one of five currently recognized species within the genus that are distinguishable only by molecular traits (Rambau et al., 2003; Castiglia et al., 2012; du Toit et al., 2012; Monadjem et al., 2015). Disjunct populations occur in a variety of mesic ecosystems spanning a high range of elevations in southern and eastern Africa (du Toit et al., 2012; Monadjem et al., 2015). Its highest reported elevations are 4200 m on Mount Elgon, Uganda or Kenya (Clausnitzer & Kityo 2001; Happold, 2013), 4180 m on Mount Kilimanjaro, Tanzania (
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