Chromosome differentiation in the Triturus alpestris complex (Amphibia: Caudata)

Herrero, Pilar; Arano, B.; Vega, Carlos García de la

doi:10.1007/bf00056062

Cited by 10 publications

(6 citation statements)

References 14 publications

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“…These paedomorphic populations are also associated with particular taxa: T. a. apuanus and T. a. inexpectatus in Italy, T. a. veluchiensis in Greece and the ‘Yugoslavian’ taxon along the Dinaric Alps (Arano & Arntzen, 1987; Herrero et al ., 1989; Sotiropoulos et al ., 2001). Although French paedomorphic populations belong to the nominate subspecies, their genome is introgressed by apuanus alleles (Breuil, 1986).…”

Section: Discussionmentioning

confidence: 99%

“…Whereas the nominate subspecies occupies North and East Europe, T. a. cyreni occurs in Spain, T. a. apuanus and T. a. inexpectatus in Italy and T. a. veluchiensis in Greece (Breuil, 1986; Arano & Arntzen, 1987). North Italian and Yugoslavian populations are also most probably differentiated from T. a. alpestris (Herrero et al ., 1989). Paedomorphosis is known in a number of European populations.…”

Section: Introductionmentioning

confidence: 99%

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Biogeography and ecology of paedomorphosis in Triturus alpestris (Amphibia, Caudata)

Denoël

Duguet

Džukić

et al. 2001

Journal of Biogeography

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Aim Paedomorphosis is an evolutionary change in which larval structures are retained in adult animals. In newts and salamanders, this heterochronic process is widely represented and concerns the retention of gill slits. We want to ®nd out whether ecological and geographical determinants may be associated with paedomorphosis in the Alpine newt Triturus alpestris.Location Europe.Methods Determination of the main characteristics of all known aquatic sites containing paedomorphic Alpine newt individuals.Results Although metamorphs are common in Europe, paedomorphs are only found at the southern margin of the geographical range of the species: mainly in Italy and in the Balkans. They were recorded in eighty-seven aquatic sites. No single trend was outlined for the analysed ecological parameters of the aquatic and terrestrial habitats (e.g. altitude, maximum water depth, drying and presence of forest).Main conclusions Contrary to the ®rst models of paedomorphosis, the main traits of aquatic and terrestrial habitat do not explain the occurrence of paedomorphs in natural populations. Although they were found in favourable aquatic habitats surrounded by hostile terrestrial landscapes, they also exist in temporary waters located at proximity of appropriate terrestrial environments. These results support models predicting paedomorphosis in varied environments, but require complementary investigations on the costs and bene®ts of the alternative ontogenetic pathways. On the other hand, the southern limitation of the heterochronic phenomenon suggests a genetic basis for paedomorphosis in the studied species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biogeography and ecology of paedomorphosis in Triturus alpestris (Amphibia, Caudata)

Denoël

Duguet

Džukić

et al. 2001

Journal of Biogeography

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“…For this purpose, studies on intraspecific chromosomal variation in closely related species is desirable, particularly since small rearrangements would be clearly revealed because of the similar characteristics of chromosome constitution in the groups analyzed. However, the chromosomal differentiation found in the T alpestris complex (Herrero et al, 1989) …”

Section: Chromosomal Divergencementioning

confidence: 99%

“…Other species of the genus ( T alpestris and T cristatus) show variation in morphological, chromosomal or molecular characteristics ('Pl----Hedgecock, 1980; Bucci-Innocenti et al, 1983;Herrero and Arano, 1986;Arano and Arntzen, 1987;Herrero et al, 1989;Wallis and Arntzen, 1989 …”

Section: Introductionmentioning

confidence: 99%

Polytypic chromosomal variation in Triturus boscai (Urodela: Salamandridae)

Herrero¹

1991

Genet Sel Evol

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“…V>lP7ir and Hedgecock, 1980;Bucci-Innocenti et al, 1983;Herrero and Arano, 1986;Arano and Arntzen, 1987;Herrero et al, 1989;Wallis and Arntzen, 1989 …”

Section: Introductionmentioning

confidence: 99%