Yves Delage

Yves Marie Delage ( born May 13, 1854 in Avignon, † October 7, 1920 in Sceaux ) was a French zoologist, physiologist and experimental embryologist.

Life

Yves Marie Delage was the youngest of five siblings from a family of civil servants. He studied in Chatellerault, where he received his baccalauréat des Sciences in 1871. His studies he continued in Poitiers and Paris. In 1875 he married Louise Lebrun, daughter of a retired captain; he had given me her three children. He received his licentiate in 1878 in the natural sciences, was then in 1880 in medicine on the topic De l' origine of the éléments Figures du sang chez les Vertebres. Historique de la question jusqu'en 1880 " doctorate. A doctorate in the natural sciences followed in 1881.

He worked in 1878 in the laboratory of Zoology in preparation for the École pratique des hautes études. He went first as an assistant to the station biologique de Roscoff ( Laboratory of Experimental Zoology ), and then in 1881 as a lecturer at the Faculty of Paris. 1883 Delage was a lecturer at the Faculty of Science, University of Caen and led the zoological station of Luc- sur -Mer. He returned to Paris in 1885 and became a lecturer at the Faculty of Natural Sciences, and the following year in 1886 professor of zoology, anatomy and physiology at the Sorbonne. From 1889 he headed the research of the Laboratory of Experimental Zoology in Roscoff and was there from 1901 until his death in 1920 director.

He describes 1884 rather complex development cycle of the Barnacle Sacculina carcini, Thompson, 1836. 1889, he made ​​important discoveries about the embryology and classification of sponges and sea urchins.

Delage was in 1886 in an experiment in Roscoff that it ( Conger conger, Linnaeus, 1758) at the falsely considered as a separate species Leptocephalus morisii indeed larvae of Meeraals acted. He is also as a protagonist of modern nuclear transfer experiments.

1902 Delage was involved at the Académie des Sciences in Paris in a debate on the Turin grave cloth.

1895 Delage founded and directed the magazine L' Année biologique, 1901 was a member of the Académie des sciences in 1916 and received the Darwin Medal. In 1900 he became chairman of the Zoological Society of France and was a member of several scientific societies. He was an officer of the Legion of Honor and received an honorary doctorate from the University of Krakow, the University of Aberdeen and the University of Geneva.

Works

• Y. Delage L' Appareil circulatoire of crustacés édriophalmes. , 1881.
• Y. Delage: Contribution à l' étude de l' appareil circulatoire of crustacés édriophthalmes marins. , 1881.
• Y. Delage: l'Evolution de la sacculine. In 1884.
• Y. Delage: Sur le système et sur ​​quelques autres nerveux points de l' organization du Peltogaster. In 1886.
• Y. Delage: Embryogénie of éponges. In 1892.
• Y. Delage: Faune de Cynthiadées de Roscoff et des Côtes de Bretagne. In 1893.
• Y. Delage L' hérédité et les grands problèmes générale de la biology. In 1895.
• Y. Delage: Traité de zoology concrète. 6 volumes, 1896-1903.
• Y. Delage: La Nature et le rôle des images hypnagogiques of Lueurs entoptiques dans le rêve. In 1903.
• Y. Delage: Les Theories de l' évolution. , 1909.
• Y. Delage: Comment pensent les bêtes. , 1911.
• Y. Delage: La parthenogenesis naturelle et expérimentale. In 1913.
• Y. Delage: Le Mendélisme et le mécanisme cytologique de l' hérédité. , 1919.
• Y. Delage: Le Rêve. , 1920.
• Y. Delage: La Structure du protoplasm, les théories de l' hérédité et les grands problèmes générale de la biology. Schleicher, Paris 1895.
• Y. Delage: Etudes sur la merogony. Arch Zool. exp. gén. 7: 383-417. , 1899.
• Y. Delage, M, Goldsmidt: La parthenogenesis naturelle et expérimentale. In 1913.