Cartographie des proteines seriques de l'urodele pyreneen Euproctus asper (duges): Stabilite dans l'aire de repartition de l'espece

Gasser, F.

doi:10.1016/0305-0491(73)90075-8

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…El papel de las montanas como barreras o filtros ala expansion de las especies ha sido senalado por diversos autores (Gasser, 1975 ;Eiselt, 1958;Saint Girons, 1952;Heatwole , 1976 ;Muller, 1979, etc.). Por otra parte, las cumbres aisladas pueden ser como islas para diversas especies bien adaptadas a sus condiciones (vease Mac Arthur, 1972;Muller, 1979).…”

Section: ) Las Montanasunclassified

Biogeografia de los Anfibios y Reptiles de Galicia, un Ensayo de Sintesis

López¹

1984

Amphib Reptilia

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In this work the actual state of knowledge on biogeography of Amphibians and Reptiles from Galicia is exposed in a synthetical way based upon distributional data gathered during the last 10 years. The geographic distribution of species and communities on latitudinal and altitudinal gradients indicates that climate and biotope are more important factors than latitude or altitude over sea. The presence of relict populations of eurosiberian taxa and the geographic distribution of endemism point to the importance of climatic alterations during the Quaternary Age (Glaciarism). Thus, the eurosiberian taxa were driven towards Galicia following both the Cornice and the Cantabrian Chain as a mountains, giving rise to sub-especiation or speciation in allopatry of some endemisms. As the present data are poor we must consider our conclusions as a first hypothesis. En el presente trabajo se expone de forma sintética el estado actual de concocimientos de la biogeografia de Anfibios y Reptiles de Galicia, basándonos en una labor de prospección realizada en los último 10 años. Distribucion geográfica de especies y comunidades en gradientes latitudinales y altitudinales conduce a considerar la importancia de los factores clima y biotopo, más que la latitud o altitud sobre el mar. Presencia de problaciones relictas de taxones eurosiberianos y distribucion geográfica de endemismos señalan la importancia de las alteraciones climáticas del Cuaternario (Glaciarismo) ; impulsando el avance hacia Galicia de taxones eurosiberianos siguiendo la cornisa y cordillera Cantabrica y propiciando la subespeciacion o especiacion en alopatria de ciertos endemismos. A la espera de una base más amplia, debemos considerar nuestras conclusiones como una hipótesis de p artida.

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Section: ) Las Montanasunclassified

Biogeografia de los Anfibios y Reptiles de Galicia, un Ensayo de Sintesis

López¹

1984

Amphib Reptilia

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“…Ο Λόγος γι' αυτό είναι ότι παρέχεται η δυνατότητα μελέτης μεγάλου αριθμού βιοχημικών χαρακτήρων. Μέχρι σήμερα όσον αφορά στα Ουροδελή, η διπλή ζώνη των αλβουμινών του ορού είχε απαντηθεί μόνο στη Salamandra s. stricto (Salamandra and S. atra) (Gasser, 1973 and. Στην παρούσα μελέτη αποκαλύπτεται η ύπαρξη αυτής της διαδικότητας των ζωνών Α και Α' στη Μ. luschani και στη Μ.…”

Section: συζήτησηunclassified

Συμβολη Στη Μελετη Του Αμφιβιου Mertensiella Luschani (Steindachner 1891) (Urodela Salamandridae). Πληθυσμιακα Και Βιοχημικα Στοιχεια

Πολυμενη¹

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Allozyme differentiation among populations of the Pyrenean newt Calotriton asper (Amphibia: Caudata) does not mirror their morphological diversification

Montori

Llorente

Garcı́a-Parı́s

2008

Zootaxa

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The Pyrenean newt (Calotriton asper) is a morphologically diversified species endemic to the Pyrenean mountains (Western Europe) that inhabits fast running streams and mountain lakes. Given its high morphological diversity, the species has been subdivided into at least ten different taxa, subsequently treated by most authors as local forms. Herein, we examined the electrophoretic patterns produced by 20 presumptive allozyme loci in specimens of seven populations distributed over the entire geographic range of the species. Sixteen loci were monomorphic across the sampling area and only four loci were polymorphic. No diagnostic alleles of any population or population set were detected. The average number of alleles per locus was found to be extremely low, between 1.1 and 1.2 ± 0.1. Genetic divergence among populations was minimal, with a maximum divergence of Nei 78 = 0.031. No correlation was shown between genetic and geographic distances (Mantel test: r = -0.29, t = -1.1, p = 0.13). Fst values were low, as would be expected for a nonfragmented population. Estimated gene flow among populations was high, with a Nm = 1.01. Cytochrome b mtDNA sequences from the two populations furthest apart only differed in a single position. According to these genetic/morphological discrepancies, we interpret the observed morphological diversification of C. asper as a product of rapid morphological change under local selection pressure, in response to population specific ecological conditions. The implication of our findings for conservation efforts is that we need to preserve the unique evolutionary processes occurring in single populations or small groups of populations, even if the populations involved cannot be taxonomically differentiated.

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Cartographie des proteines seriques de l'urodele pyreneen Euproctus asper (duges): Stabilite dans l'aire de repartition de l'espece

Cited by 3 publications

References 36 publications

Biogeografia de los Anfibios y Reptiles de Galicia, un Ensayo de Sintesis

Biogeografia de los Anfibios y Reptiles de Galicia, un Ensayo de Sintesis

Συμβολη Στη Μελετη Του Αμφιβιου Mertensiella Luschani (Steindachner 1891) (Urodela Salamandridae). Πληθυσμιακα Και Βιοχημικα Στοιχεια

Allozyme differentiation among populations of the Pyrenean newt Calotriton asper (Amphibia: Caudata) does not mirror their morphological diversification

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