Ferdinand Carl Valentin Haecker (15 September 1864 – 19 December 1927) was a German zoologist, reader at Freiburg University from 1892. In 1900, he became professor at the

University of Applied Sciences Stuttgart The Hochschule für Technik Stuttgart - University of Applied Sciences (german: Hochschule für Technik Stuttgart, HFT Stuttgart) is one of ten institutes for higher education in Stuttgart. It was founded in 1832 as a school for construction cra ...

and in 1909 at

Martin Luther University of Halle-Wittenberg Martin Luther University of Halle-Wittenberg (german: Martin-Luther-Universität Halle-Wittenberg), also referred to as MLU, is a public, research-oriented university in the cities of Halle and Wittenberg and the largest and oldest university i ...

. He was president of the ''Deutsche Zoologische Gesellschaft'' from 1922. He died unexpectedly from a stroke. Haecker's contributions span the fields of ornithology,

plankton Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankt ...

(

Radiolaria The Radiolaria, also called Radiozoa, are protozoa of diameter 0.1–0.2 mm that produce intricate mineral skeletons, typically with a central capsule dividing the cell (biology), cell into the inner and outer portions of endoplasm and Ecto ...

) cell biology, developmental physiology,

genetics Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar wor ...

(where he established the subfield of ''

phenogenetics In genetics, the phenotype () is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological proper ...

''). He also published a historical treatise on

Goethe Johann Wolfgang von Goethe (28 August 1749 – 22 March 1832) was a German poet, playwright, novelist, scientist, statesman, theatre director, and critic. His works include plays, poetry, literature, and aesthetic criticism, as well as treat ...

's work on

morphology Morphology, from the Greek and meaning "study of shape", may refer to: Disciplines * Morphology (archaeology), study of the shapes or forms of artifacts * Morphology (astronomy), study of the shape of astronomical objects such as nebulae, galaxies ...

.Goethes morphologische Arbeiten und die neuere Forschung, Jena 1927.

References

* Rudolf Haecker: Das Leben von Valentin Haecker. in: Zoologischer Anzeiger, Band 174, Heft 1/1965, pp. 1–14, * Georg Uschmann: Haecker, Ferdinand Carl Valentin. In: Neue Deutsche Biographie (NDB). Band 7, Duncker & Humblot, Berlin 1966, , 427 f. * Hans-Albrecht Freye: Valentin Haecker 1864 bis 1927. Leben und Werk. in: Hercynia, Band 2, Heft 3/1965, 326–337, * Haecker, Valentin Carl Ferdinand, in Jürgen Dietrich Kurt Kiefer: Bio-bibliographisches Handbuch der Akademie Gemeinnütziger Wissenschaften zu Erfurt. Akademie Gemeinnütziger Wissenschaften zu Erfurt, Erfurt 2005, , 234. {{DEFAULTSORT:Haecker, Valentin German geneticists 19th-century German zoologists 1864 births 1927 deaths 20th-century German zoologists