Author/Authors :
Savari، Sharareh نويسنده Dept. of Marine Biology, Faculty of Marine Sciences, Khorramshahr University of Marine Science and Technology, Khorramshahr, IR Iran , , Safahieh، Alireza نويسنده Faculty of Marine Sciences, Khorramshahr Marine Sciences and Technology University, P.O. Box 669, Khorramshahr, I.R. Iran , , Archangi، Bita نويسنده Dept. of Marine Biology, Faculty of Marine Sciences, Khorramshahr University of Marine Science and Technology, Khorramshahr, IR Iran , , Savari، Ahmad نويسنده Department of Marine Biology, Khorramshar University of Marine Science and Technology 669 Khorramshar, IR Iran , , Abdi، Rahim نويسنده Department of Marine Biology, Faculty of Marine Science, Khorramshahr University of Marine Science and Technology, Khorramshahr, IR Iran ,
Abstract :
This research was carried out to identify the different layers and cells of orange spotted grouper
brain for further toxicological experiments and defects brought by xenobiotics during exposure
periods.The anatomy and histology of the brain of orange spotted grouper was illustrated and
compared to mammals and other fishes. The preserved structures of teleosts brain species were
different as compared to other orders of teleosts and mammals. The anatomy and histology of
the olfactory tract, olfactory lobe, cerebrum, optic lobe, cerebellum, diencephalon and medulla
were visualized by the stereoscope and optic microscope using haematoxylin- eosin staining
method. Different layers of various parts of the brain were depicted and compared to other
species. The telencephalon of E.coioides was lobulated. The cerebrum consisted of a single
layer unlike the six layered neocortex in mammals. The epiphysis was situated internally within
the tectal ventricle. The cerebellum was the most prominent part in this fish, which might not be
seen in other orders of teleosts. The cerebellum consisted of corpus cerebelli and valvula
cerebelli. The ganglionic layer of cerebellum possessed eurydendroid cells which did not exist
in mammals.
