Some butterflies do not care much about topography: a single genetic lineage of Erebia euryale (Nymphalidae) along the northern Iberian mountains

摘要: The phylogeography of montane species often reveals strong genetic differentiation among mountain ranges. Both classic morphological and studies have indicated distinctiveness Pyrenean populations the butterfly Erebia euryale. This hypothesis remained inconclusive until data from westernmost distribution area (Cantabrian Mountains) were analysed. In present study, we set out to describe population structure euryale in western Cantabria, where occurs scattered localities. For this goal, estimate diversity found 218 individuals six Cantabrian (North Spain) localities genotyped by 17 allozyme loci. We also sequence 816 bp cytochrome oxidase subunit I mitochondrial gene 49 41 specimens five other European sites. Mitochondrial support recognition four major groups previously suggested for based on polymorphisms. nuclear markers reveal a single Pyrenean–Cantabrian lineage E. euryale. lack geographical star-like topology displayed haplotypes indicate pattern demographic expansion northern Iberia, probably related Upper Pleistocene climatic oscillations. By contrast, within lineage, samples are genetically structured datasets. particular, San Isidro is significantly differentiated populations, which cluster into two groups. recognize an evolutionary significant unit Our results illustrate that history may be shaped processes undetectable using mtDNA alone. Resumen La filogeografia de especies montana ha revelado frecuentemente una fuerte diferenciacion genetica entre que habitan distintos sistemas montanosos. Tanto la morfologia clasica como estudios geneticos previos sugerian distincion las poblaciones pirenaicas mariposa euryale, aunque esta hipotesis precisaba ser confirmada mediante el estudio mas occidentales del distribucion especie: Cordillera Cantabrica. En este trabajo se pretende describir estructura dicha area, donde especie distribuida en localidades dispersas. Para ello, estimaron diversidad y presentadas por individuos muestreados seis Cantabrica (Norte Espana) genotipados para loci alozimicos. Asimismo, secuenciaron 816 pb gen mitocondrial COI dichas Cantabricas especimenes procedentes otras cinco europeas. Los datos mitocondriales apoyaron division cuatro grupos principales no ibericas previamente sugeridos otros autores base resultados los marcadores nucleares revelaron un unico linaje genetico Cantabrico-Pirenaico La falta geografica, asi topologia forma estrella mostrada haplotipos indicaron demografica poblacion ancestral actualmente distribuidas Norte peninsular. Dicha probablemente estuvo relacionada con oscilaciones climaticas acaecidas durante Pleistoceno tardio. Dentro Cantabrico-Pirenaico, clara muestras fueron mostraron mayor respecto cantabricas, estructuradas su vez dos diferentes. obtenidos, propone argumenta definicion unidad evolutiva significativa Nuestros ilustran historia puede moldeada procesos indetectables utilizando unicamente ADNmt.