[Morphology of retinomotor response of Oncorhynchus masou fry exposed in magnetic field and red light].
The retinomotor response of Oncorhynchus masou fry was studied following their experimental exposure to constant magnetic field, red light and their combination. Photoreceptor and pigment epithelium reactions to red light had a mesopic character. The mesopic state of retina after exposure of fishes to magnetic field in darkness differed from that after exposure to red light by the reaction of a pigment epithelium (PE). Exposure to magnetic field after red light resulted in the summation of these two effects. As rods are adapted to twilight, and cones are adapted to light, combined functioning of two perception mechanisms is possible, which is never found in normal conditions. After exposure to red light that followed the action of magnetic field, retinomotor reaction reflected the physiological dysfunction, with no functioning of either rods or cones. PE was actively participating in reactions to changes of magnetic field. The assumption that the cells of PE of fish retina can act as a light-dependent magnetoreceptor, is discussed.
Zagal'skaia
E O
EO
Gniubkina
V P
VP
Maksimovich
A A
AA
D000818:Animals; D003623:Dark Adaptation; D004574:Electromagnetic Fields; D008027:Light; D017683:Oncorhynchus / Q000033:anatomy & histology / Q000502:physiology*; D010465:Perception / Q000502:physiology*; D010857:Pigment Epithelium of Eye / Q000166:cytology / Q000502:physiology*; D017949:Retinal Cone Photoreceptor Cells / Q000166:cytology / Q000502:physiology*; D017948:Retinal Rod Photoreceptor Cells / Q000166:cytology / Q000502:physiology*