Genetic Adaptations and Evolutionary Ecology of Desert Rodents

Desert rodents have evolved a suite of genetic and physiological traits that enable survival in arid environments characterised by extreme heat, water scarcity and limited food resources. Key adaptations include enhanced water conservation mechanisms in the kidney, molecular adjustments to protein stability under thermal and osmotic stress, and shifts in metabolic and behavioural strategies to minimise water loss and maintain energy balance. Comparative genomic and transcriptomic studies reveal signatures of positive selection on gene families associated with osmoregulation, such as aquaporins and solute carrier transporters, as well as on pathways governing protein synthesis, degradation and repair. Ecologically, behavioural shifts in foraging, burrow architecture and reproductive timing further reflect evolutionary responses to desert pressures. These genetic and ecological adaptations illuminate fundamental processes of natural selection and convergent evolution and inform predictions of species resilience to global climate change and expanding desertification.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Genetic Adaptations and Evolutionary Ecology of Desert Rodents publication trend

The graph below shows the total number of articles in genetic adaptations and evolutionary ecology of desert rodents across all publications each year (not limited to Nature Index journals).

Technical terms

Osmoregulation: The process by which organisms control internal water and solute concentrations to maintain cellular homeostasis.

Transcriptome: The complete set of RNA transcripts produced by the genome under specific conditions or in particular tissues.

Selective sweep: A reduction in genetic variation around a beneficial allele that has risen to high frequency due to positive selection.

Aquaporin: A membrane protein that forms channels to facilitate rapid water transport across cell membranes.

Vasopressin–renin–angiotensin–aldosterone system: A hormonal cascade that regulates water and sodium balance and blood pressure in vertebrates.

References

1. Mobilisation of jerboa kidney gene networks during dehydration and opportunistic rehydration. iScience (2023).
2. The multi-tissue gene expression and physiological responses of water deprived Peromyscus eremicus. BMC Genomics (2024).
3. Comparative and population genomics approaches reveal the basis of adaptation to deserts in a small rodent. Molecular Ecology (2020).