NATURAL SCIENCES

Journal of fundamental
and
applied researches

Transformation of some parts of the Caspian seal (Phoca caspica)digressive tract

2013. №3, pp. 92-96

Volodina Viktoriya V. - Research Associate, Federal State Unitary Enterprise Caspian Fisheries Research Institute, l Savushkin Str., Astrakhan, 414056, Russian Federation, Vo-Vik5@yandex.ru

Grushko Maria P. - Sc.D. (Biology), Professor, Astrakhan State Technical University, 16 Tatishev Str., Astrakhan, 414056, Russian Federation, mgrushko@mail.ru

Fedorova Nadezhda N. - D.Sc. (Medicine), Professor, Astrakhan State Technical University, 16 Tatishev Str., Astrakhan, 414056, Russian Federation, estnauki2009@rambler.ru

Organism viability mainly depends on the functionality of the digressive organs. The digressive organs condition at the cellular and tissular levels of animals, inhabited in natural environment, if of particular interest. The study is concerned with adults Caspian seal. Ventriculus, small and large intestine tissues were taken for analysis. The histopathological examination of Caspian seals ventriculus identified significant defects, such as: mucous coat endema, extravazation, tissue necrosis of mucous coat and replacement of mucous tissue by connective, which indicates catarrhal gastritis. The analysis of small intestine of the animals revealed the symptoms of desquamative endoenteritis: plethorical and edematous mucous coat was largely covered with mucic exudate. Epithelium degeneration and desquamation were observed, especially on the apex villi. Colitis was detected at the large intestine (acute, ulcerative, chronic). The detected defects at ventriculus, large and small intenstine of examined animals indicate the poor state of these parts of digressive system of examined Phoca caspica.

Key words: Caspian seal,histology,ventriculus,small intenstine,large intenstine,pathological changes,catarrhal gastritis,desquamative endoenteritis,colitis