+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Variation in age, body size and growth among surface and cave-dwelling populations of the Pyrenean newt, Euproctus asper (Amphibia; Urodela)



Variation in age, body size and growth among surface and cave-dwelling populations of the Pyrenean newt, Euproctus asper (Amphibia; Urodela)



Herpetologica 61(3): 241-249



To examine environmental effects on age structure, growth rate and body size, we studied three epigean populations (490-2350 in a.s.l.) and one subterranean (550 in a.s.l.) population of the Pyrenean newt Euproctus asper. The age structures were measured by skeletochronology of phalanges. In the three surface populations, where winter dormancy on land causes an annual growth stop, lines of arrested growth (LAGs) were observed. LAGs in the subterranean population, where individuals stay in the water throughout the year, indicate yearly (at least cyclical) periods of arrested growth even though animals occupy a relatively constant temperature/light environment. The age structures of adults did not differ between surface populations (5-28 yr) and the subterranean population (7-16 yr). Body lengths were highest for the surface population from the lowest altitude. The age, body size and growth traits of the Subterranean population came closer to the values obtained for the surface population located at 490 in a.s.l. than for those living at higher altitudes. We hypothesize that LAGs in subterranean newts result from reduced feeding in winter and that the similarity of age and size structures of subterranean and low-altitude populations argues for a recent colonization of the hypogean environment, where populations can find remaining optimal environmental conditions favorable to these stenothermic and rheophilous animals.

(PDF emailed within 0-6 h: $19.90)

Accession: 012736720

Download citation: RISBibTeXText

DOI: 10.1655/04-29.1


Related references

Metabolism and circadian rhythms of the European blind cave salamander Proteus anguinus and a facultative cave dweller, the Pyrenean newt (Euproctus asper). Canadian Journal of Zoology 78(8): 1427-1432, 2000

First record of the Pyrenean mountain newt Euproctus asper in the Catalan Littoral Mountains Primera cita de triton pirenaico Euproctus asper en la Cordillera Litoral Catalana. Boletin de la Asociacion Herpetologica Espanola, 8: 2-3, 1997

Behavioral sensitivity of the European blind cave salamander, Proteus anguinus, and a Pyrenean newt, Euproctus asper, to electrical fields in water. Brain Behavior & Evolution. 49(3): 121-131, 1997

Reproduction of urodela modifications in reproduction of the epigeal species euproctus asper by its introduction into the moulis cave france part 2 euproctus asper female. Annales de Speleologie 31: 163-168, 1976

Observations on the Pyrenean brook salamander Euproctus asper, Amphibia, Salamandridae Observations sur leuprocte des Pyrenees Euproctus asper, Amphibia, Salamandridae. Bulletin de la Societe Linneenne de Bordeaux. 1993( ); 214: 146, 1994

Various biotopes of the spanish pyrenean urodela euproctus asper. Bulletin de la Societe d'Histoire Naturelle de Toulouse 114(3-4): 461-471, 1979

Data and hypotheses on the chronology of the fragmentation and isolation of subterranean populations of the Pyrenean salamander Euproctus asper in Ariege Donnees et hypotheses sur la chronologie de lenfouissement et lisolement des populations souterraines deuprocte des Pyrenees Euproctus asper en Ariege. Memoires de Biospeologie. 2001( ); 2855: 79-83, 2002

Behavioural, physiological and metabolic responses to long-term starvation and refeeding in a blind cave-dwelling (Proteus anguinus) and a surface-dwelling (Euproctus asper) salamander. Journal of Experimental Biology 204(Pt 2): 269-281, 2001

Variation in sexual dimorphism between two populations of the Pyrenean salamander Euproctus asper from ecologically different mountain sites. Belgian Journal of Zoology 130(1): 39-45, 2000

Allozyme differentiation among populations of the Pyrenean newt Calotriton asper Amphibia Caudata does not mirror their morphological diversification. Zootaxa 1945 (28 November): 39-50, 2008

Diet of pyrenean newt larvae euproctus asper in the prepyrenees of cerdana spain. Amphibia-Reptilia 13(2): 157-167, 1992

Fecundity of the Pyrenean newt Euproctus asper (Duges, 1852) in the Spanish Prepyrenees. Unknown, 1992

Influence of visual and chemical cues on the aggregation behavior of Pyrenean mountain newts, Euproctus asper (Urodela, Salamandridae). Subterranean Biology, 358: 63-68, 2005

Skeletochronological results in the pyrenean newt Euproctus asper (Duges, 1852) from one prepyrenean population. Annales des Sciences Naturelles Zoologie et Biologie Animale. 1990 ; 114: 209-211, 1991