Iowa State University Researchers Link Primary Cilia to Temperature-Dependent Sex Determination in Turtles

Researchers at Iowa State University have identified a connection between primary cilia—tiny, antenna-like structures found on animal cells—and the biological processes that determine the sex of turtle embryos based on temperature. Led by evolutionary biologist Nicole Valenzuela, the study indicates that these cellular structures play a role in the molecular networks that regulate sex development in vertebrates.

The research team observed how these cilia function as sensory mechanisms, allowing embryos to detect environmental warmth during critical stages of development. By linking these structures to the pathways that dictate sex, the study provides new insight into how temperature-dependent sex determination operates at a cellular level. These findings clarify the biological mechanisms that translate external thermal signals into internal developmental outcomes for turtle populations.

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Date: August 8, 2026

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