ArticlePloS one2018
The topography of rods, cones and intrinsically photosensitive retinal ganglion cells in the retinas of a nocturnal (Micaelamys namaquensis) and a diurnal (Rhabdomys pumilio) rodent.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Subterranean Traits of the Visual System in Mandarin Voles (Lasiopodomys mandarinus): Structural Remodeling and Functional Degeneration.Integrative zoology · 2026Article
- Altered proportions of retinal cell types and distinct visual codes in rodents occupying divergent ecological niches.Current biology : CB · 2025Article
- Retinal neuroanatomy of two emerging model organisms, the spiny mouse (Acomys dimidiatus) and the Mongolian gerbil (Meriones unguiculatus).Experimental eye research · 2024Article
- Light sensitivity of the circadian system in the social Highveld mole-rat Cryptomys hottentotus pretoriae.The Journal of experimental biology · 2024Article
- Retinal primary cilia and their dysfunction in retinal neurodegenerative diseases: beyond ciliopathies.Molecular medicine (Cambridge, Mass.) · 2024Review
- Reconfiguration of the visual code and retinal cell type complement in closely related diurnal and nocturnal mice.bioRxiv : the preprint server for biology · 2024Article
- The genomic basis of temporal niche evolution in a diurnal rodent.Current biology : CB · 2023Article
- Multinucleated Retinal Pigment Epithelial Cells Adapt to Vision and Exhibit Increased DNA Damage Response.Cells · 2022Article
- Anatomy and Histology of the Eye of the NutriaZoological studies · 2022Article
- The Impact of the Spectral Radiation Environment on the Maximum Absorption Wavelengths of Human Vision and Other Species.Life (Basel, Switzerland) · 2021Article
- Spatial sensitivity of human circadian response: Melatonin suppression from on-axis and off-axis light exposures.Neurobiology of sleep and circadian rhythms · 2021Article
- Trilogy Development of Proopiomelanocortin Neurons From Embryonic to Adult Stages in the Mice Retina.Frontiers in cell and developmental biology · 2021Article
- Spectral sensitivity of cone vision in the diurnal muridThe Journal of experimental biology · 2020Article
- nGnG Amacrine Cells and Brn3b-negative M1 ipRGCs are Specifically Labeled in the ChAT-ChR2-EYFP Mouse.Investigative ophthalmology & visual science · 2020Article
- Effects of the colour of photophase light on locomotor activity in a nocturnal and a diurnal South African rodent.Biology letters · 2019Article
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6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
We used immunocytochemistry to determine the presence and topographical density distributions of rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs) in the four-striped field mouse (Rhabdomys pumilio) and the Namaqua rock mouse (Micaelamys namaquensis). Both species possessed duplex retinas that were rod dominated. In R. pumilio, the density of both cones and rods were high (cone to rod ratio: 1:1.23) and reflected the species' fundamentally diurnal, but largely crepuscular lifestyle. Similarly, the ratio of cones to rods in M. namaquensis (1:12.4) reflected its nocturnal lifestyle. Similar rod density peaks were observed (R. pumilio: ~84467/mm2; M. namaquensis: ~81088/mm2), but a density gradient yielded higher values in the central (~56618/mm2) rather than in the peripheral retinal region (~32689/mm2) in R. pumilio. Two separate cone types (S-cones and M/L-cones) were identified implying dichromatic color vision in the study species. In M. namaquensis, both cone populations showed a centro-peripheral density gradient and a consistent S- to M/L-cone ratio (~1:7.8). In R. pumilio, S cones showed a centro-peripheral gradient (S- to M/L-cone ratio; central: 1:7.8; peripheral: 1:6.8) which appeared to form a visual streak, and a specialized area of M/L-cones (S- to M/L-cone ratio: 1:15) was observed inferior to the optic nerve. The number of photoreceptors per linear degree of visual angle, estimated from peak photoreceptor densities and eye size, were four cones and 15 rods per degree in M. namaquensis and 11 cones and 12 rods per degree in R. pumilio. Thus, in nocturnal M. namaquensis rods provide much finer image sampling than cones, whereas in diurnal/crepuscular R. pumilio both photoreceptor types provide fine image sampling. IpRGCs were comparably sparse in R. pumilio (total = 1012) and M. namaquensis (total = 862), but were homogeneously distributed in M. namaquensis and densest in the dorso-nasal quadrant in R. pumilio. The adaptive significance of the latter needs further investigation.
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