Publications by authors named "Ansley Petherick"
Article Synopsis
- Positive allometry in signaling traits, like the size of lizard dewlaps, suggests evidence for sexual selection, but research on interspecific differences among similar species is limited.
- The study found that dewlap size increases relative to body size in lizards, indicating positive allometry.
- Coexisting species show divergent scaling relationships, whereas species that are ecologically similar exhibit similar dewlap allometric patterns, suggesting that these scaling relationships reflect broader trends in anole evolution.
Arctic climate change poses serious threats to polar bears (Ursus maritimus) as reduced sea ice makes seal prey inaccessible and marine ecosystems undergo bottom-up reorganization. Polar bears' elongated skulls and reduced molar dentition, as compared to their sister species the grizzly bear (Ursus arctos), are adaptations associated with hunting seals on sea ice and a soft, lipid-rich diet of blubber and meat. With significant declines in sea ice, it is unclear if and how polar bears may be altering their diets.
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