What kind of eye movements will goldfish show in space?
Six goldfish (1 normal, 1 with otoliths removed on both sides, 4 with otoliths removed on one side) were flown in space. The behaviors of the fish were recorded with a video camera on Mission Elapsed Time (MET) Day-00, 02, 05, 08, and 12. On MET Day-00, fish with otoliths removed on one side showed rolling behavior toward the operated side. No rolling behaviors were observed after MET Day-8. Five fish showed backward looping behaviors during the mission. After the space experiment, torsional eye movements and vertical eye movements were examined by body tilting. The experiments showed that the sensitivity of eye movements were low for head up tilting and tilting to operated side.
Takabayashi
Akira
A
School of Health Sciences, Fujita Health University.
D000222:Adaptation, Physiological; D000818:Animals; D001522:Behavior, Animal; D005133:Eye Movements; D006054:Goldfish; D010037:Otolithic Membrane / Q000601:surgery*; D013026:Space Flight; D013550:Swimming; D013997:Time Factors; D014741:Video Recording; D014893:Weightlessness