| horned lizard (phrynosoma) phylogeny inferred from mitochondrial genes and morphological characters: understanding conflicts using multiple approaches. | the genus phrynosoma includes 13 species of north american lizards characterized by unique and highly derived morphologies and ecologies. understanding interspecific relationships within this genus is essential for testing hypotheses about character evolution in this group. we analyzed mitochondrial nd4 and cytochrome b gene sequence data from all species of phrynosoma in conjunction with a previously published dataset including 12s and 16s rrna gene sequences and morphological characters. we us ... | 2004 | 15120393 |
| diversification in the mexican horned lizard phrynosoma orbiculare across a dynamic landscape. | the widespread montane mexican horned lizard phrynosoma orbiculare (squamata: phrynosomatidae) represents an ideal species to investigate the relative impacts of neogene vicariance and quaternary climate change on lineage diversification across the mexican highlands. we used mitochondrial dna to examine the maternal history of p. orbiculare and estimate the timing and tempo of lineage diversification. based on our results, we inferred 11 geographically structured, well supported mitochondrial li ... | 2012 | 21964512 |
| thermal physiology responds to interannual temperature shifts in a montane horned lizard, phrynosoma orbiculare. | as climate change marches on, rapidly rising temperatures shatter records every year, presenting ever-growing physiological challenges to organisms worldwide. ectotherms rely on behavioral and physiological plasticity to contend with environmental fluctuations. nonetheless, our understanding of thermal plasticity has been largely limited to laboratory settings. here, we test whether aspects of thermal physiology respond to interannual shifts in thermal environment in a natural population of phry ... | 2020 | 32767500 |