Naslov
Environmental temperatures shape thermal physiology as well as diversification and genome-wide substitution rates in lizards

Autori
Garcia-Porta, Joan ; ... ; Jovanović Glavaš, Olga ; ... ; Wollenberg Valero, C. Katharina

Izvornik
Nature Communications (2041-1723) 10:4077 (2019); 1-12

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Squamata ; Lacertidae ; anchored hybrid enrichment ; RNA sequencing ; physiological adaptations ; bioclimate

Sažetak
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 genomewide 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.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA