Chronology of the LAGs formation and body growth in Argenteohyla siemersi from northeastern Argentina

PIÑIERO, J. M.; MARANGONI, F.; COURTIS, A. C.; INGARAMO, M. D. R.; CAJADE, R.

Posadas

Congreso; I Congreso Argentino-Paraguayo de Herpetología, XVII Congreso Argentino de Herpetología y II Congreso Paraguayo de Herpetología.; 2016

Asociación Herpetológica Argentina - UNaM

We studied the chronology of LAG formation and validated the method for estimate age in Argenteohyla siemersi inhabiting the humid Chaco of Argentina. In addition, we determined whether well-expressed growth marks are formed in A. siemersi when raised during one year in laboratory, to determine whether formation is genetically or environmentally based. Individuals increased 84.51% in BM and 52.47% in SVL after one year of growth in the laboratory. Two out of eight individuals that survived at the end of the experiment showed well-expressed growth marks. Overall, we confirm the reliability of the skeletochronology in estimating age of this specie and reinforce the hypothesis that, the LAG formation is ultimately caused by a general intrinsic (genetic) control.