ArticleBrain, behavior and evolution2024
Trade-Offs in the Sensory Brain between Diurnal and Nocturnal Rodents.
Article in Brain, behavior and evolution, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- White eye-rings coevolved with diurnal behaviors as a trait enhancing visual appeal in rodents.Communications biology · 2026Article
- Candidate Key Proteins of Tinnitus in the Auditory and Motor Systems of the Thalamus.International journal of molecular sciences · 2025Article
- Altered proportions of retinal cell types and distinct visual codes in rodents occupying divergent ecological niches.Current biology : CB · 2025Article
- Reconfiguration of the visual code and retinal cell type complement in closely related diurnal and nocturnal mice.bioRxiv : the preprint server for biology · 2024Article
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4 authors.
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Abstract
introductionTransitions in temporal niche have occurred many times over the course of mammalian evolution. These are associated with changes in sensory stimuli available to animals, particularly with visual cues, because levels of light are so much higher during the day than at night. This relationship between temporal niche and available sensory stimuli elicits the expectation that evolutionary transitions between diurnal and nocturnal lifestyles will be accompanied by modifications of sensory systems that optimize the ability of animals to receive, process, and react to important stimuli in the environment.
methodsThis study examines the influence of temporal niche on investment in sensory brain tissue of 13 rodent species (five diurnal; eight nocturnal). Animals were euthanized and the brains immediately frozen on dry ice; olfactory bulbs were subsequently dissected and weighed, and the remaining brain was weighed, sectioned, and stained. Stereo Investigator was used to calculate volumes of four sensory regions that function in processing visual (lateral geniculate nucleus, superior colliculus) and auditory (medial geniculate nucleus, inferior colliculus) information. A phylogenetic framework was used to assess the influence of temporal niche on the relative sizes of these brain structures and of olfactory bulb weights.
resultsCompared to nocturnal species, diurnal species had larger visual regions, whereas nocturnal species had larger olfactory bulbs than their diurnal counterparts. Of the two auditory structures examined, one (medial geniculate nucleus) was larger in diurnal species, while the other (inferior colliculus) did not differ significantly with temporal niche.
conclusionOur results indicate a possible indirect association between temporal niche and auditory investment and suggest probable trade-offs of investment between olfactory and visual areas of the brain, with diurnal species investing more in processing visual information and nocturnal species investing more in processing olfactory information.
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