... how they use vision in the context of their behavioral ecology. In this paper, we measured the number and topographic distribution of neurons (rods, cones and retinal ganglion cells) and estimated the spatial resolving power of the eye of the diurnal, forest-dwelling Ansorge's cusimanse (Crossarchus...

..., but not ultrastructural criteria. No other data (spectral sensitivity, visual pigments, photokinetics) are available to characterize these receptors as rods or cones and their role in the ecology of photoreception requires further investigation. Sarcopterygian fish gave rise to the first tetrapods and are represented...

.... Alternatively, the colour vision system of New World monkeys may represent a method of obtaining the maximum variation in the colour vision of closely related family groups. Colour vision Visual pigments Cones Polymorphism Sex differences Original Paper Brain Bchav Evol 1993;42:116-127 Martin lovée...

...Jack B. Calderone; Benjamin E. Reese; Gerald H. Jacobs The spatial distributions of photoreceptors and retinal ganglion cells were examined in the spotted hyena (Crocuta crocuta) . Two populations of cones were identified by immunocytochemical labeling. The hyena retina contains approximately 2.3...

... reported for the holarctic lamprey Ichthyomyzon unicuspis [Collin and Fritzsch, 1993], the lens of G. australis is non-spherical and possesses a cone-shaped posterior that may be capable of mediating variable focus. The avascular retina of G. australis is well differentiated, containing three retinal...

...- and cone-like photoreceptors restricted to the ventral accessory retina; and a retinal diverticulum comprised of a ventral region of differentiated accessory retina located medial to the optic nerve head. Retrograde labelling from the optic nerve with DiI shows that approximately 14% of the cells...