Leaving the tropics: The successful colonization of cold temperate regions by Dolicheremaeus dorni (Acari, Oribatida)
Leaving the tropics: The successful colonization of cold temperate regions by Dolicheremaeus dorni (Acari, Oribatida)
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离开热带：Dolicheremaeus dorni（螨虫、Oribatida）在冷温带地区的成功殖民
DOI：
10.1111/jzs.12222
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发表时间：
2018
影响因子：
1.9
通讯作者：
Pfingstl Tobias
中科院分区：
文献类型：
--
作者：
Schaffer Sylvia;Stabentheiner;E.;Shimano Satoshi;Pfingstl Tobias
与温带地区相比，热带地区的物种多样性通常更高。几乎只有一个热带生物属的一个物种能够成功地适应北方寒冷地区的现象相当罕见。然而，甲螨Dolicheremaeus dorni代表了这样一个物种，也是本研究的重点。虽然180种Dolicheremaeus仅限于热带和亚热带，但只有5种已知出现在温带气候中，Dolicheremaeus是该气候区域唯一分布范围更广的物种。本种分布于中欧和南欧，并且现在在奥地利被首次记录。对来自奥地利、波兰和克罗地亚的标本进行的形态和分子遗传学研究证实了这一分布模式，并揭示了每个种群的特定地理分支和单倍型，因此表明种群之间的基因流动较低。对其18S rRNA基因序列进行了进一步的分子遗传学分析，确定了其在贝类总科中的系统发育地位。根据记录信息，该物种与树木或树木栖息地有关，似乎是特定底物(例如，树种)或食物来源的通才，而不是专家。
Species diversity is generally higher in the tropics compared to the temperate zones. The phenomenon that one species of an almost exclusively tropical living genus was able to adapt successfully to the cold northern regions is rather rare. However, the oribatid miteDolicheremaeus dornirepresents such a species and is in the focus of this study. While 180Dolicheremaeusspecies are confined to the tropics and subtropics, only five species are known to occur in temperate climates andD. dornirepresents the only species with a wider distribution in this climatic region. This species is distributed in Central and Southern Europe and was now recorded for the first time in Austria. A morphological and molecular genetic investigation of specimens from Austria, Poland and Croatia confirmed this distribution pattern and revealed specific geographic clades and haplotypes for each population and hence indicate low gene flow between populations. A further molecular genetic analysis of the18S rRNAgene sequence ofD. dorniconfirmed its phylogenetic position within Carabodoidea. Based on record information, this species is associated with trees or tree habitats and seems to be rather a generalist than a specialist for a specific substrate (e.g., tree species) or food source.