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Demographic Traits Variation in a Pyrenean Newt (Calotriton asper) among Lacustrine and Stream Populations

1
Departament de Ciència Animal, Secció de Fauna Silvestre, Universitat de Lleida, Alcalde Rovira Roure 191, 25198 Lleida, Catalonia, Spain
2
Centre Tecnològic Forestal de Catalunya, Ctra. St. Llorenç de Morunys km 2, 25280 Solsona, Catalonia, Spain
3
Àrea d’Herpetologia, BiBIO, Museu de Granollers—Ciències Naturals, Palaudàries 102, 08402 Granollers, Catalonia, Spain
*
Authors to whom correspondence should be addressed.
Diversity 2020, 12(12), 471; https://doi.org/10.3390/d12120471
Received: 26 October 2020 / Revised: 8 December 2020 / Accepted: 10 December 2020 / Published: 12 December 2020
(This article belongs to the Section Phylogeny and Evolution)
Demographic traits were analyzed in the Pyrenean brook newt (Calotriton asper) to evaluate whether its variability responds to the adaptation to the different habitats. In this study, life history traits of Calotriton asper were studied in nine populations living in two different kinds of habitats in the Pyrenees mountains: lakes and streams. Skeletochronology was used to determine age structure and different traits such as age at maturity and longevity. Age structure was different between populations and sexes. The two lacustrine populations, with facultative pedomorphosis, attained their maturity earlier. Age at sexual maturity ranged from 4 to 9 years and in some populations was similar between sexes while in others, females matured at younger ages than males. Maximum longevity varied from 7 to 35 years among populations and was correlated with the age at sexual maturity. Body size differed among populations, was sexually dimorphic, and this disparity was not related to the kind of habitat. The maximum size was found in the lacustrine population but exhibited high variation between populations. The results obtained show a significant variability between sexes and populations, in age and body size structure of Calotriton asper that did not depend on the habitat. View Full-Text
Keywords: age structure; Calotriton asper; habitat type; demography; variability; evolution and body size age structure; Calotriton asper; habitat type; demography; variability; evolution and body size
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MDPI and ACS Style

Camarasa, S.; Oromi, N.; Sanuy, D.; Amat, F. Demographic Traits Variation in a Pyrenean Newt (Calotriton asper) among Lacustrine and Stream Populations. Diversity 2020, 12, 471. https://doi.org/10.3390/d12120471

AMA Style

Camarasa S, Oromi N, Sanuy D, Amat F. Demographic Traits Variation in a Pyrenean Newt (Calotriton asper) among Lacustrine and Stream Populations. Diversity. 2020; 12(12):471. https://doi.org/10.3390/d12120471

Chicago/Turabian Style

Camarasa, Sebastià, Neus Oromi, Delfí Sanuy, and Fèlix Amat. 2020. "Demographic Traits Variation in a Pyrenean Newt (Calotriton asper) among Lacustrine and Stream Populations" Diversity 12, no. 12: 471. https://doi.org/10.3390/d12120471

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