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The eyes and optic paths of the catfish, ameiurus
Author(s) -
Herrick C. Judson
Publication year - 1941
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.900750206
Subject(s) - citation , library science , catfish , art history , biology , art , computer science , fish <actinopterygii> , fishery
The relationships and peculiar organization of the siluroid fishes have long been of interest to comparative anatomists. Several systematic descriptions of their general structure have been published and many special reports. Among the latter is Stroer's recent account ('39) of the projection of retinal quadrants upon the optic tectum in representative vertebrates, including among the fishes the siluroids, Ameiurus nebulosus and Clarias. My own interest in his problem led to restudy of a number of specimens of Ameiurus which were prepared many years ago for other purposes. None of this material is well adapted for investigation of a possible projection of the retina upon the tectum; but in the course of its examination some other features were seen which seem worthy of record. Various physiological studies indicate that the eyes of these fishes hare interesting peculiarities and further information about them is desirable. Stroer says ('39, p. 305) that in Ameiurus retinal fibers from eight separate optic papillae unite into a common trunk of the optic nerve, within which they take parallel courses to the chiasma, where they separate into two bundles derived