Kovalevsky Alexander
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Alexander Onufrievich Kovalevsky (1840–1901) was a prominent zoologist and embryologist who made foundational contributions to the study of invertebrate development. He is credited with establishing the significance of germ layers and the role of phagocytes in insect metamorphosis.
Encyclopedia article (1928–1936)
KOVALEVSKY ALEXANDER Onufrievich (1840–1901), a noted zoologist. He graduated from the University of St. Petersburg in the natural sciences division. He was a professor first at Kazan, then successively at Kiev, Novorossiysk, and St. Petersburg universities. In 1890 he was elected a member of the Academy of Sciences. A foremost embryologist who gave a series of classic works on the development of the most diverse groups of invertebrate animals. His work "History of the Development of the Lancelet" (St. Petersburg, 1865), which established the all-encompassing significance of the theory of germ layers, and his works on the development of ascidians, balanoglossus, chitons, and insects, in which Kovalevsky showed the great role of phagocytes during the pupal stage, are of particular importance. His work on Coeloplana, which he obtained in the Red Sea, formed the basis of the theory of the origin of worms from radiate ancestors. Together with Zalensky and Metchnikov, K. is considered the founder of invertebrate embryology. K. is the author of about 100 special works that brought him worldwide fame.
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“Kovalevsky Alexander.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/kovalevsky-alexander/