Open AccessMorphological, anatomical and histological studies on the olfactory organs and eyes of teleost fish: Anguilla anguilla in relation to its feeding habits
Author(s) -
K.I. Atta
Publication year - 2013
Publication title -
journal of basic and applied zoology /journal of basic and applied zoology
Language(s) - English
Resource type - Journals
eISSN - 2090-9896
pISSN - 2090-990X
DOI - 10.1016/j.jobaz.2013.10.002
Subject(s) - biology , anatomy , rosette (schizont appearance) , vomeronasal organ , olfactory epithelium , olfactory receptor cell , olfactory system , olfaction , fish <actinopterygii> , neuroscience , fishery , immunology
The morphology, anatomy and histology of the olfactory organ of Anguilla anguilla have been described. It was found that each olfactory chamber opens externally by an anterior inlet and posterior outlet nostrils. The olfactory rosette situated in each chamber is oval and the number of its olfactory lamellae in the olfactory rosette increases with the increase of body length. The olfactory epithelium of the lamellae is composed of receptor, supporting, basal and goblet cells.The average olfactory surface area is about 590.9% of the retinal area. Thus A. anguilla is a macrosmatic species “nose-fish” in which olfaction plays an important role in its feeding habit. It is noticed that, the photoreceptor cell layer in A. anguilla (bottom feeder) is made up only of rod cells