Life in extremes

The genomic basis of desert adaptation

Deserts are bellwethers for climate change and are outstanding natural laboratories to study biological adaptation. Since the start of my PhD research I seek to advance our general understanding of the genetic basis and evolutionary mechanisms underlying mammalian adaptation to extreme arid/hyper-arid environments. To address this I have been using a set of integrative approaches to study the demographic and adaptive history of North-African foxes and other desert-dwelling species.

Left: check-up and blood collection. Right: Video of a curious Rueppell’s fox inspecting a cage-trap at night.

Representative publications on this topic include:

  1. Joana L. Rocha, Jose C. Brito, Rasmus Nielsen, and Raquel Godinho (2021), Convergent evolution of increased urine concentrating ability in desert mammals (Mammal Review, DOI: https://doi.org/10.1111/mam.12244)
  2. Joana L. Rocha, Raquel Godinho, Jose C. Brito and Rasmus Nielsen (2021), Life in deserts: the genetic basis of mammalian desert adaptation (Trends and Ecology and Evolution; DOI: https://doi.org/10.1016/j.tree.2021.03.007)
  3. Joana L. Rocha, Pedro Silva, Nuno Santos, Monia Nakamura, Sandra Afonso, Abdeljebbar Qninba, Zbyszek Boratynski, Peter H. Sudmant, Jose C. Brito, Rasmus Nielsen‡ and Raquel Godinho‡ (2023), North-African fox genomes show signatures of repeated introgression and adaptation to life in deserts (Nature Ecology and Evolution; DOI: https://doi.org/10.1038/s41559-023-02094-w).

Media highlights on this topic:

  1. Searching for adaptation secrets in the Sahara Desert, written by Diana Aguilar-Gómez for the News section of The California Institute for Quantitative Biosciences at UC Berkeley (QB3-Berkeley)

  2. These rare adaptations help animals survive in the desert, written by Jason P. Dinh for the Planet Earth section of Discover Magazine

  3. Handling the heat: Desert collaborations unveil the genetic history of how foxes have adapted to a warming climate, written by Samvardhini Sridharan for Climate Change and Life Science section of Berkeley Science Review, Online issue September 24, 2024 (Fall 2023 printed issue 45)

Designs by Madeleine Snyder