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Carbohydrates in rod and cone light absorbing segments in the firemouth cichlid Thorichthys meeki retina
Author(s) -
Leknes I. L.
Publication year - 2011
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2011.03122.x
Subject(s) - biology , retina , cichlid , rhodopsin , galactose , opsin , mannose , biophysics , anatomy , retinal , biochemistry , fish <actinopterygii> , neuroscience , fishery
Carbohydrates in photoreceptor segments in the retina of the firemouth cichlid Thorichthys meeki are described and compared. The present periodic acid‐Schiff (PAS) and lectin results revealed the occurrence of neutral carbohydrates, composed mainly of glycosamine and mannose and glucose, in the light absorbing segments in rods and cones in this species. Unlike in mammals, the retina in this teleost seems to be poor in galactose and galactose–galactosamine units in the light absorbing segments.