Published: May 9, 2024
A thick-tailed greater galago (Otolemur crassicaudatus) spotted at the Lajuma Research Centre. (Credit: Jack Dalton)

In the “sky islands” of the Soutpansberg Mountains of South Africa, two closely related species of primate jostle for space. One is the thick-tailed greater galago (Otolemur crassicaudatus), also known as a bushbaby, which is about the size of a large cat and known for its high-pitched, wailing call. The second primate, the southern lesser galago (Galago moholi), boasts big ears and eyes and is small enough to fit in the palm of your hand.

In new research, a team led by CU Boulder primatologist Michelle Sauther turned to these animals to explore an overlooked question in conservation: Does being big or small change how an animal adapts to extreme temperatures?

The group’s findings suggest that small animals like the lesser galago could face extra challenges as the planet’s climate continues to shift. “Body size really does affect everything,” said Sauther, professor in theDepartment of Anthropology. “How big you are affects your life history. It affects when you reproduce. It affects how long you live.”

She and her colleaguesin the International Journal of Primatology.

Read the article inCU Boulder Today