Peculiarities of formation of breeding mesonephros capacity of Russian sturgeon under hormone stimulation | Особенности формирования воспроизводительной функции мезонефроса русского осетра при гормональной стимуляции
2009
Lozhnichenko, O.V. | Zagrijchuk, V.P. | Kuchkova, A.V. | Myastsova, P.V., Astrakhan State Technical Univ. (Russian Federation)
The influence of hormonal additives on the perculiarities of gameto- and gonadogenesis of larvae and fry of the Russian sturgeon was studied. The research has defined a structural and functional organization of mesonephros of Russian sturgeon which at an early stage of life exercises many functions, in particular genital one. Heterochronism in the development of primordial germ cells observed in increasing in a number of primordial germ cells, strengthening of primordial germ cells concentration in the sphere of gonads initiation, shortening of terms of primary sexual muscular embankment initiations in the group of Russian sturgeon affected by hormone additives, has been defined. Pathological influence of hormone additives on structural parts of mesonephros strengthens with increasing of exposition terms. It is concluded that long-term application of hormone-containing feeds at early ontogenesis stages of the Russian sturgeon has a pathological influence on morphostructure of mesonephrons and intercanalicular tissue of Russian sturgeon kidney
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