Abstract
The analysis of forming internal organs of shemaya ( Chalcalburnus chalcoides ) juvenile grown up in Temryuk fish breeding farm (Krasnodar region) showed that juveniles have got rather differentiated vital organs. Olfactory lobe looked like a small pair of growths on a forebrain; the third ventricle grew round; a formed epiphysis adjoined its upper part; an epithelial hypothesis adjoined its lower part. In the midbrain one could see visual lobe. The cerebellum contained considerable number of nerve cells; the medulla was shorter than a cerebellum; fossa rhomboidea was rather wide. The medulla narrowed into the spinal cord. Olfactory lobe was very wide, with open cavity, its epithelium gathered into rough longitudinal folds creating a socket. An eyeball had all well-differentiated scleras. All parts of a digestive tract had all three coats: mucous, muscular and connective; their thickness was different. The massive liver had well pronounced trabecular architectonics. Pancreas was actively producing enzymes. Shemaya juveniles have got completely formed gills that consist of filaments and lamellas. The heart of a shemaya juvenile has four well developed cameras: very wide auricle with thin walls; a ventricle; a small sinus venosus and an arterial cone. There are found species characteristics: gills have filaments of I and II orders, an arterial cone has a row of the pocket-style valves. Pathological changes are revealed in liver (fatty dystrophy) and gills (growths of a multilayered non-keratinized epithelium in the intervals between lamellas). This can be connected with violation of shemaya artificial cultivation technologies.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
