Environmental Temperatures Shape Thermal Physiology as eell as Diversification and Genome-Wide Substitution Rates in Lizards
© 2019, The Author(s). Climatic conditions changing over time and space shape the evolution of organisms at multiple levels, including temperate lizards in the family Lacertidae. Here we reconstruct a dated phylogenetic tree of 262 lacertid species based on a supermatrix relying on novel phylogenomic datasets and fossil calibrations. Diversification of lacertids was accompanied by an increasing disparity among occupied bioclimatic niches, especially in the last 10 Ma, during a period of progressive global cooling. Temperate species also underwent a genome-wide slowdown in molecular substitution rates compared to tropical and desert-adapted lacertids. Evaporative water loss and preferred temperature are correlated with bioclimatic parameters, indicating physiological adaptations to climate. Tropical, but also some populations of cool-adapted species experience maximum temperatures close to their preferred temperatures. We hypothesize these species-specific physiological preferences may constitute a handicap to prevail under rapid global warming, and contribute to explaining local lizard extinctions in cool and humid climates.
Garcia-Porta, Joan; Irisarri, Iker; Kirchner, Martin; Rodríguez, Ariel; Kirchhof, Sebastian; Brown, Jason L.; MacLeod, Amy; Turner, Alexander P.; Ahmadzadeh, Faraham; Albaladejo, Gonzalo; Crnobrnja-Isailovic, Jelka; De la Riva, Ignacio; Fawzi, Adnane; Galán, Pedro; Göçmen, Bayram; Harris, D. James; Jiménez-Robles, Octavio; Joger, Ulrich; Jovanović Glavaš, Olga; Karış, Mert; Koziel, Giannina; Künzel, Sven; Lyra, Mariana; Miles, Donald; Nogales, Manuel; Oğuz, Mehmet Anıl; Pafilis, Panayiotis; Rancilhac, Loïs; Rodríguez, Noemí; Rodríguez Concepción, Benza; Sanchez, Eugenia; and Salvi, Daniele, "Environmental Temperatures Shape Thermal Physiology as eell as Diversification and Genome-Wide Substitution Rates in Lizards" (2019). Biological Sciences Open Access Publications. 21.