NDLI: Activity of cytochrome oxidase in centers of tectofugal and thalamofugal tracts of the visual system of pigeon Columbia livia

Content Provider	Springer Nature Link
Author	Belekhova, M. G. Kenigfest, N. B. Chudiva, T. V.
Copyright Year	2011
Abstract	By using a histochemical method of determination of activity of cytochrome oxidase (CO), the level of metabolic activity in pigeons has been shown to be higher in centers of the tectofugal visual tract (pretectal nuclei: Pr, SP, SP/IPS, thalamic nucleus Rot, end telencephalic entopallidum) than in centers of the thalamofugal visual tract (GLd of the thalamus, visual area of the hyperpallium Wulst). These data agree with the concept of dominating role of the tectofugal visual tract in organization of the bird everyday behavior. The high CO activity is also characteristic of the mesencephalic structures (EM, isthmic nuclei: IMc, IPc, and SLu) modulating transduction of visual information in tectum, Rot, and GLd. Similar differences in the metabolic activities between two visual system tracts were earlier shown in reptiles, which indicates the evolutionary conservatism of the tectofugal visual tract among the sauropside amniotes. However, in pigeons the level of the CO activity in some GLd nuclei approaches that in Rot, which allows us to suggest an increase in birds of role of the thalamofugal tract in processing of information necessary for performance of complex visual functions.
Starting Page	83
Ending Page	96
Page Count	14
File Format	PDF
ISSN	00220930
Journal	Journal of Evolutionary Biochemistry and Physiology
Volume Number	47
Issue Number	1
e-ISSN	16083202
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-04-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	avian visual system metabolic activity cytochrome oxidase Evolutionary Biology Animal Physiology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Physiology Biochemistry Ecology, Evolution, Behavior and Systematics

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