Discovery of a mixed population of Pérez's Frog (Pelophylax perezi) and Graf's Frog (P. kl. grafi) in the Ardèche departement
Abstract
In this article we present the discovery in June 2022 of a population of the PG system (Pelophylax perezi - grafi) in the Fontgraze stream, a temporary stream in the south of the Ardeche department. Initially identified from a sound recording, genetic analyses subsequently confirmed the presence of numerous individuals of P. perezi and P. kl. grafi, as well as at least one individual of P. ridibundus. Until now, only one record of P. kl. grafi obtained in 2013 testified to the past presence of this complex in the Ardeche department and in the whole Auvergne-Rhone-Alpes region. The PG system is under serious threat in the south of France from the expansion of P. ridibundus; it is possible that the particular conditions of the Fontgraze stream have allowed the PG system to persist here, but only regular monitoring of this population will reveal whether it is resisting competition from P. ridibundus.
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BibTeX
@article{noally2026discovery,
title = {{Discovery of a mixed population of Pérez's Frog (Pelophylax perezi) and Graf's Frog (P. kl. grafi) in the Ardèche departement}},
author = {Loup Noally and Rémi Duguet and Pierre-André Crochet},
journal = {Bulletin de la Société Herpétologique de France},
year = {2026},
month = sep,
url = {https://hal.science/hal-05764997v1},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Discovery of a mixed population of Pérez's Frog (Pelophylax perezi) and Graf's Frog (P. kl. grafi) in the Ardèche departement
AU - Loup Noally
AU - Rémi Duguet
AU - Pierre-André Crochet
PY - 2026
DA - 2026/09/25
JO - Bulletin de la Société Herpétologique de France
UR - https://hal.science/hal-05764997v1
AB - In this article we present the discovery in June 2022 of a population of the PG system (Pelophylax perezi - grafi) in the Fontgraze stream, a temporary stream in the south of the Ardeche department. Initially identified from a sound recording, genetic analyses subsequently confirmed the presence of numerous individuals of P. perezi and P. kl. grafi, as well as at least one individual of P. ridibundus. Until now, only one record of P. kl. grafi obtained in 2013 testified to the past presence of this complex in the Ardeche department and in the whole Auvergne-Rhone-Alpes region. The PG system is under serious threat in the south of France from the expansion of P. ridibundus; it is possible that the particular conditions of the Fontgraze stream have allowed the PG system to persist here, but only regular monitoring of this population will reveal whether it is resisting competition from P. ridibundus.
SN - 0754-9962
SN - 2724-9557
ER -