Evolution of the melanistic colour in the Alpine salamander Salamandra atra as revealed by a new subspecies from the Venetian Prealps
Evolution of the melanistic colour in the Alpine salamander Salamandra atra as revealed by a new subspecies from the Venetian Prealps
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DOI：
10.1080/11250000509356680
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发表时间：
2005-01-01
影响因子：
--
通讯作者：
Steinfartz, S
中科院分区：
文献类型：
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作者：
Bonato, L;Steinfartz, S
为了重建Salamandra atra组内体色的进化，对该组的7个种群进行了线粒体DNA D-环序列的系统发育分析，包括所有3种不同的颜色形式和所有已知的名义亚种。此外，还包括四个外类群物种。在S. atra：G）总是黄色斑块的S。a. aurorae血统从Altopiano dei Sette Comuni（威尼斯前阿尔卑斯山脉）;（ii）遗传上不同的血统代表的人口从Pasubio的Pakuf（威尼斯前阿尔卑斯山脉），其中黄色补丁是有限的或完全缺乏;（iii）血统包括所有完全黑化人口从阿尔卑斯山到Dinarides，这被分配给S。a. atra，还包括标称S。a. prenjensis。不同的遗传重建方法和统计检验支持了S. a. aurorae是S.阿特拉在这些后者的血统，S。a. pasubiensis是所有S. a. atra血统。这种系统发育重建表明，黄色斑块的颜色是祖先的条件在S。atra和进化过渡到完全黑色素的颜色可能发生通过中间减少在扩展的补丁。因此，S的完全黑色素颜色。lanzai可能与S.它有一个独立的起源。该物种的学名为Salamandra atra pasubiensis n.。亚种
In order to reconstruct the evolution of the body colour within the Salamandra atra group, a phylogenetic analysis of the mitochondrial DNA D-loop sequence was performed on seven populations of this group, including all three chromatically different forms and all known nominal subspecies. Also included were four outgroup species. Three major mitochondrial lineages were found within S. atra: G) the invariably yellow-patched S. a. aurorae lineage from the Altopiano dei Sette Comuni (Venetian Prealps); (ii) a genetically distinct lineage represented by a population from the Pasubio massif (Venetian Prealps), in which the yellow patches were either limited or completely lacking; (iii) a lineage comprising all fully melanistic populations from the Alps to the Dinarides, which were assigned to S. a. atra and also included the nominal S. a. prenjensis. Different phylogenetical reconstruction methods and statistical tests supported the hypothesis that the lineage of S. a. aurorae was the sister group to both remaining lineages of S. atra. Within these latter lineages, S. a. pasubiensis emerged as the sister group to all populations of the S. a. atra lineage. This phylogenetic reconstruction suggests that the yellow-patched colour is the ancestral condition in S. atra and the evolutionary transition to fully melanistic colour occurred probably through an intermediate reduction in the extension of the patches. Therefore, the fully melanistic colour of S. lanzai, which is probably not strictly related to S. atra, has an independent origin. The population from the Pasubio massif is here described as Salamandra atra pasubiensis n. subsp.