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Dr. Curt Kosswig (sometimes spelled "Koßwig") (30 October 1903, Berlin – 29 March 1982, Hamburg) was a German zoologist and geneticist who spent most of his career at the University of Istanbul (1937–1955) and
Hamburg University The University of Hamburg (german: link=no, Universität Hamburg, also referred to as UHH) is a public research university in Hamburg, Germany. It was founded on 28 March 1919 by combining the previous General Lecture System ('' Allgemeines Vor ...
(1955–1969). Curt Kosswig is known as the Father of Turkish Zoology.


Early life

Curt Kosswig was born in Berlin and graduated from Berlin's Schöneberg Hohenzollern School (''Hohenzollernschule''), graduating in 1922. Afterwards, he attended the University of Berlin studying Natural Sciences, Zoology, and Genetics, where he completed his PhD in 1927. In 1930, he married his wife Leonore (1904–1973) who was also a biologist. They would become acclaimed as a husband and wife research team in Turkey. They had two sons, the older of whom is named Kurt Kosswig (Kurt with a 'K' rather than his father's 'C') who became a chemist.


Academic career

Curt Kosswig was a lifetime academic and scholar, widely published and well-respected within a wide range of fields but primarily zoology. Among his important scientific publications were advances in the understanding of
sex-determination system A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. Most organisms that create their offspring using sexual reproduction have two sexes. In some species there are hermap ...
s, carcinogenesis, constructive and regressive evolution, genetics of
house pet A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive appearances, intellig ...
s, zoological geography, and species classification. His research interests and fields of study widened considerably once he arrived in Turkey and was able to found an entire department from the ground up.


Early rise in academia: pre-1927

Completing his bachelor's degree at the University of Berlin, in the mid-1920s began to study for a PhD in genetics under Professor Erwin Bauer. Kosswig's published his first academic paper in 1925 in the German ''Journal for the Study of Animal Breeding and Hereditary Science'' (German: Zeitschrift für Tierzüchtung und Züchtungsbiologie). He was only 21 years old upon publication of his first paper. Another of his papers was accepted for publication in 1926. Curt Kosswig was awarded a doctorate (PhD) in genetics on April 1, 1927, at age 23. In this year, he published his doctoral research work as ''The Gene in Foreign Genotypes'' (German: ''Das Gen in fremder Erbmasse''). He had conducted experiments with
cyprinodont Pupfish are a group of small killifish belonging to ten genus, genera of the family Cyprinodontidae of ray-finned fish. Pupfish are especially noted for being found in extreme and isolated situations. They are primarily found in North America, S ...
s, which were groundbreaking in the field of genetics, which "anticipated the concept we now know as gene transfer in carcinogenesis." Additionally, Kosswig published eleven more academic papers as a young PhD, from 1927 to 1929, four a total fourteen published papers by his 26th birthday.


Early career in Germany, 1927–33

As Germany's situation deteriorated and the Depression deepened, Kosswig's academic career soared, with seventeen more papers published between 1930 and 1933 for a prolific total of 31 papers published before his 30th birthday in late 1933. (In total, he authored or coauthored 152 papers that were published in journals between 1925 and 1948 alone, with many more later.) In 1927, he got a job as an assistant professor at
Münster University Münster (; nds, Mönster) is an independent city (''Kreisfreie Stadt'') in North Rhine-Westphalia, Germany. It is in the northern part of the state and is considered to be the cultural centre of the Westphalia region. It is also a state dist ...
in Münster, Germany. Kosswig worker there for six years, starting the very semester that a
Leopold von Ubisch Leopold von Ubisch (1886–1965) was a German paleontologist who in 1954 surgically removed the nucleus from sea urchin eggs, to confirm an 1899 experiment by Theodor Boveri. He was an early supporter of the theory of continental drift. Life V ...
(1886–1965) took over the Zoology Department. Kosswig would remain loyal to von Ubisch in the 1930s when Ubisch came under political persecution. On April 1, 1933, he left Munster to be installed as a professor at Braunschweig University of Technology. He retained this position until fall 1937, when he abruptly left for Turkey. The story of his emigration to Turkey belongs more in the realm of politics.


Involvement in politics and ''Rassenkunde'', 1933–36

Curt Kosswig was not a member of any political party before 1933. In November 1933, Kosswig joined the SS, an elite branch of the NSDAP (Nazi Party). His relations with the Nazi Party were never warm, though, as demonstrated by the events of 1935 in Münster. He supported the principles of academic freedom and supported all academic non-conformists who came under political persecution by the state. While at Braunschweig from 1933 onward, Kosswig came under the purview of the newly created Race and Settlement Office ( RuSHA) under Walther Darre. Kosswig was asked to serve as an educator for this organization. Part of his duties included lecturing NSDAP party members and groups of interested citizens about genetics and racial anthropology (called ''Rassenkunde''). Dr. Kosswig preferred the academic world to the political, and had never registered with any political party in his 20s. In November 1933, Kosswig joined the SS (see note for possible reasons), an elite branch of the NSDAP (Nazi Party). His relations with the Nazi Party were never warm, though, as demonstrated by the events of 1935 in Münster.


The Munster Zoology Department chairmanship crisis, 1934–36

From 1933, the new German government instituted a policy of encouraging Jewish professors to leave German universities, especially those seen to be in positions of political importance. The head of the Munster Zoology Department, Professor von Ubisch, was half-Jewish and seen as politically unreliable. After a long controversy, Ubisch was finally dismissed from his post as head of the Zoology Department at Munster University in 1935, after which he emigrated to Norway. Kosswig, who had worked with Ubisch for six years at Munster, maintained his support for Ubisch. Following the dismissal of his former superior, Dr. Kosswig was asked to take up the chair. He declined. As the authorities looked for possible candidates to replace Ubisch, the entire local academic community became involved, some supporting Ubisch and some opposing him. Ubisch's two assistants were fired. Kosswig (then an assistant professor at Braunschweig University) secured jobs for both of the dismissed assistants. This, on top of refusing to take the seat itself in protest, lost him favor in the eyes of the party. These are factors which may have contributed to his own decision to leave Germany in 1937.


Emigration to Turkey, 1937

Following the "Ubisch succession crisis" in Munster, Curt Kosswig left the SS (in 1936). He also started thinking about leaving Germany itself, which he did in autumn 1937 at the invitation of the University of Istanbul and some German professors who were already there. In doing so, he became one of the 190 total German academics who emigrated to Turkey during the 1930s in Germany. Kosswig remained outside Germany during World War II (1939–1945) and the occupation and reconstruction (''Wiederaufbau'') periods, but retained active contact with his European colleagues, exchanging materials, information, and research.


Career in Turkey, 1937–55

His output was prolific in his Turkish years, with hundreds of articles published, and en entire major university department being built around him at Istanbul. The Zoology Department at the University of Istanbul, which still exists today, is considered to have been entirely founded by Curt Kosswig. Already in 1937, Kosswig was given directorship of the Istanbul Zoology Museum. He oversaw its expansion and "collected examples of mammals, birds, reptiles, frogs, fish and various invertebrates, which he brought in the museum contributing to its enrichment." In these years, Dr. Kosswig expanded his field of study to include mammals, comparative genetics, gender inheritance, tumor genetics, gene manifestation, Anatolian fauna, and even
continental drift theory Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The idea of continental drift has been subsumed into the science of pla ...
. He worked with and encouraged his doctoral students to study, among other things, hereditary tumors in animals, fish polygenic sex determination, freshwater and marine fish in Anatolia, animal species systematics, giant chromosome structure, fish intersexuality, DDT effects, and symbiotic nitrogen fixation in bacteria Kosswig discovered, identified, and named many new species in this time, including the rare
Saz Baligi ''Garra kemali'' is a species of cyprinid fish, which is found only in Turkey, in swamps and freshwater lakes. It is threatened by a habitat loss.Behrens-Chapuis, S., Herder, F., Esmaeili, H.R., Freyhof, J., Hamidan, N.A., Özuluğ, M., Šanda, R ...
and
Aphanius splendens ''Anatolichthys splendens'', the Gölçük toothcarp or splendid toothcarp, is an extinct species of freshwater fish in the family Aphaniidae. It was endemic to Lake Gölçük in Turkey Turkey ( tr, Türkiye ), officially the Republic o ...
. In 1942, a colleague named a new genus of pupfishes as ''Kosswigichthys'' in his honor, which was renamed by Kosswig and that colleague (Dr. Soezer) in 1945 as ''Anatolichthys'' in honor of their place of origin in Anatolia. This genus is now called Aphanius. Dr. Kosswig continued publishing and research, and even took up the role of "adventurer" in search of new and lost species. In this context, in 1950 he became one of the first Europeans allowed by Turkey to cross the
Euphrates The Euphrates () is the longest and one of the most historically important rivers of Western Asia. Tigris–Euphrates river system, Together with the Tigris, it is one of the two defining rivers of Mesopotamia ( ''the land between the rivers'') ...
into southeastern Turkey, on a voyage he organized and led "in pursuit of two ancient species—a saltwater fish in the hills above
Lake Van Lake Van ( tr, Van Gölü; hy, Վանա լիճ, translit=Vana lič̣; ku, Gola Wanê) is the largest lake in Turkey. It lies in the far east of Turkey, in the provinces of Van and Bitlis in the Armenian highlands. It is a saline soda lake ...
and the fabled bald ibis of Birecik". Kosswig is also remembered as the founder of the bird sanctuary at
Lake Manyas A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger ...
(now called
Lake Kuş Lake Kuş ( tr, Kuş Gölü, lit=Bird Lake) or Lake Manyas ( tr, Manyas Gölü, link=no) is a lake in western Turkey, located in the Bandırma region. It is a shallow nutrient-rich freshwater lake (average depth 3 m) fed by groundwater and four ...
) in Turkey, which still exists today


Back in Germany, 1955–69

Curt Kosswig returned to Germany in 1955 at the invitation of the University of Hamburg. He worked there for fourteen years until being bestowed the title of Professor Emeritus in 1969. He served as the director of the Zoological Institute and the Zoological Museum at Hamburg University.


Later life

Curt Kosswig died in 1982 in Hamburg. He is buried in Istanbul, his home of eighteen years.


Lifetime honors

* Honorary Doctorate awarded by the University of Istanbul, whose zoology department he founded. * In 2003, in honor of the centenary of Curt Kosswig's birth, the faculties for Natural Sciences and Marine Sciences of the University of Istanbul and the Zoological Department and Museum of the University of Hamburg held a joint memorial symposium in honor of his life and work.''German Scientists in Turkey After 1933: Curt Kosswig and his Major Importance for Zoological Research and Education''


Tribute

The stone loach ''
Turcinoemacheilus kosswigi ''Turcinoemacheilus kosswigi'' is a species of stone loach which is endemic to the Tigris–Euphrates Basin where it can be found in the stretches of rivers, eve small streams, with faster currents and it often occurs on riffles and rapids. The ...
'' honors Kosswig, because he collected the type specimen of this species among others he collected in Turkey.


Links

* A list o
Curt Kosswig's publications
(PDF; German and Turkish) *
Curt Kosswig Web Site
(Turkish)


References

{{DEFAULTSORT:Kosswig, Curt 20th-century German zoologists Academic staff of the University of Hamburg Academic staff of Istanbul University German expatriates in Turkey Burials at Aşiyan Asri Cemetery 1903 births 1982 deaths