NATURAL SCIENCES

Journal of fundamental
and
applied researches

FEATURES OF DEVELOPMENT OF THE DIGESTIVE SYSTEM CLARAVIA CATFISH (CLARIIDAE) IN THE EARLY STAGES OF DEVELOPMENT

2017. №2, pp. 53-63

Anna Pirog V. - postgraduate student, Astrakhan State Technical University, 16 Tatisheva Str., Astrakhan, 414025, Russian Federation, sofiichka.pirog@yandex.ru

Lozhnichenko Olga V. - D.Sc. (Biology), Professor, Astrakhan State Technical University, 16 Tatisheva Str., Astrakhan, 414025, Russian Federation

The development of the digestive system of the fish studied by many researchers, but mainly they were devoted to the study of valuable species of salmon and sturgeon. A study of the development of the digestive system prenticing claravia catfish obtained by artificial breeding in the RAS models revealed that after the release of the fetus from the shells formed in the digestive tract, there were multiple atresia: his mouth was closed epithelial tube, there was no connection between the oral cavity and esophagus to the future, was not formed anus. n the initial stage of development in the hepatic portion of the hepatopancreas notably the formation of a beam structure. Hepatocytes are large, and in the main mass of the cytoplasm of hepatocytes was observed clearly marked fatty degeneration. With further development in the structure of the hepatopancreas increased the proportion of acini, increased the number pancreatico contained in the cytoplasm granules of zymogen.

Key words: клариевый сом, гапатопанкреас, гепатоциты, серозная оболчка, слизистая оболчка, некроз, ацинусы, бокаловидные клетки, островок Лангерганса, зимоген, African catfish, hepatopancreas, hepatocytes, obolchka serous, mucous obolchka, necrosis, acini, goblet ce