Розвиток органів сечостатевої системи в ранньому ембріогенезі Balaenoptera acutorostratа

Abstract

For the first time, the reseach of the embryogenesis of the urogenital system in a Mysticeti representative, B. acutorostrata, is carried out. The data on topografic-anatomical interrelations between mesonephros, metanephros, and gonada in early embryogenesis are presented. The morphometric regularities of the formation of mesonephric and metanephric kidneys in interconnection with intraorgan differentiation processes are established. On the basis of comparative-embryological analysis of the research results, the heterochronies of the development of B. acutorostrata metanephros and gonada are found. The possibility of kidney's functioning in the prenatal period of the wales development is considered.