The study of the morphological features of the Amur tiger is limited, therefore any material from them should be investigated. The prenatal period is an important link in scientific research, during this period all morphological structures are laid down and the subsequent formation of the future organism takes place. The embryonic development of the Amur tiger has not been studied. There is no information on intrauterine growth and determination of the age of the fetuses of the Amur tiger, so the relevance of studying this issue is undeniable. The objects of the study were kidneys of the Amur tiger fetuses. The obtained results by the weight and size of the fetuses were compared with newborn tiger cubs of the same brood in the same amount. The features of topography and morphology in the Amur tiger kidneys in the prenatal period, as well as the absolute and relative linear measurements of the kidneys, were determined. We found that the relative kidney mass in fetuses was higher than in adult tigers. The functions of the ureters are performed by the urachus, the bladder in the fetuses of the Amur tiger is of allantoid origin.

Lyubchenko Elena N., Ivanchuk Galina V., Korotkova Irina P., Kukharenko Natalya S., Fedorova Anastasiya O.

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