Photoreceptors and Visual Pigments as Related to Behavioral Responses and Preferred Habitats of Perches (Perca spp.) and Pikeperches (Stizostedion spp.)

摘要: A review of the literature indicated contrasts in retinal structure and function between perches (Perca spp.) pikeperches (Stizostedion spp.). Foremost among these were differences size distribution rods, shape cones, extent retinomotor responses, possession or lack reflecting material, relative concentrations melanin. The are primarily active by daylight, whereas most during twilight at night. coincidental occupancy shoal areas yellow perch flavescens) walleye vitreum vitreum) is related to decreasing visual acuity former approach optimum performance latter species. On this basis two species have a classic predator–prey relationship. Key words: histology, light, Perca sp., photopic vision, predation, retina, Stizostedion vitreum, symbiosis, tapetum lucidum