Investigations on Cetacea (1980)


(…) The research shows that the finless porpoise of the Changjiang (Yangtze river) presents an atrophy ofthe entire optic system – eye and eye muscle nerves, optic nerve, optic pathways. Comparison with the atrophy which has taken place in Lipotes vexillifer, the Chinese river dolphin, reveals a similar pattern as far as the main foci of regression are concerned. (…)