Eberhard Gwinner (26 December 1938 – 7 September 2004) was a German ornithologist and founding director of the Max-Planck Institute for ornithology. He specialized in the study of annual rhythms, their endocrine control, and biological clocks in birds.
Gwinner was born in Stuttgart and educated at Ludwigsburg and Tübingen. He became interested in birds at a young age and published his first note at the age of 17. He received a doctorate from the University of Tübingen in 1964 with research on ravens under the guidance of Gustav Kramer and Konrad Lorenz. His post-doctoral studies with Jürgen Aschoff made him interested in the timing of migration and breeding. He worked in Zaire from 1965 to 1966. He began to research endocrinology with Donald Farner in Washington and examined circadian rhythms at Stanford with Colin Pittendrigh. In 1979 he became head of the Radolfzell observatory and in 1998 he founded the Max Planck Research Centre for Ornithology and served as its director until his death.[1][2]
He conducted long-term experiments on captive stonechats (Saxicola torquata) and garden warblers (Sylvia borin), some kept for nearly twelve years, under controlled environmental conditions and demonstrated that there were endogenous annual rhythms in the body that continued to show even when the birds were maintained under constant and artificial day-night durations.[3][4][5] He examined proximate control mechanisms such as melatonin secretion by the pineal gland[6] and the response to photoperiod. He examined if photoperiod directly controlled rhythms or whether they merely synchronized the internal rhythms, acting as a "zeitgeber" (time-giver).[7]
Referencesedit
^Daan, Serge; Hau, Michaela (2004). "Eberhard Gwinner (1938-2004)". Journal of Biological Rhythms. 19 (6): 463–464. doi:10.1177/0748730404271238. ISSN 0748-7304. S2CID 83556903.
^Holberton, Rebecca L.; Able, Kenneth P. (2005). "In Memoriam: Eberhard Gwinner, 1938-2004". The Auk. 122 (3): 1013–1015. doi:10.1093/auk/122.3.1013. ISSN 0004-8038. JSTOR 4090613.
^Gwinner, Eberhard; Scheuerlein, Alexander (1998). "Seasonal changes in day-light intensity as a potential zeitgeber of circannual rhythms in equatorial Stonechats". Journal für Ornithologie. 139 (4): 407–412. doi:10.1007/BF01653467. ISSN 0021-8375. S2CID 9349916.
^Gwinner, Eberhard (2008). "Circannual clocks in avian reproduction and migration". Ibis. 138 (1): 47–63. doi:10.1111/j.1474-919X.1996.tb04312.x.
^Gwinner, Eberhard; Helm, Barbara (2003), Berthold, Peter; Gwinner, Eberhard; Sonnenschein, Edith (eds.), "Circannual and Circadian Contributions to the Timing of Avian Migration", Avian Migration, Berlin, Heidelberg: Springer Berlin Heidelberg, pp. 81–95, doi:10.1007/978-3-662-05957-9_5, ISBN978-3-642-07780-7, retrieved 2021-04-28
^Cornelius, J.M.; Boswell, T.; Jenni-Eiermann, S.; Breuner, C.W.; Ramenofsky, M. (2013). "Contributions of endocrinology to the migration life history of birds". General and Comparative Endocrinology. 190: 47–60. doi:10.1016/j.ygcen.2013.03.027. PMID 23602795.
April 11, 2024
eberhard, gwinner, december, 1938, september, 2004, german, ornithologist, founding, director, planck, institute, ornithology, specialized, study, annual, rhythms, their, endocrine, control, biological, clocks, birds, gwinner, born, stuttgart, educated, ludwig. Eberhard Gwinner 26 December 1938 7 September 2004 was a German ornithologist and founding director of the Max Planck Institute for ornithology He specialized in the study of annual rhythms their endocrine control and biological clocks in birds Gwinner was born in Stuttgart and educated at Ludwigsburg and Tubingen He became interested in birds at a young age and published his first note at the age of 17 He received a doctorate from the University of Tubingen in 1964 with research on ravens under the guidance of Gustav Kramer and Konrad Lorenz His post doctoral studies with Jurgen Aschoff made him interested in the timing of migration and breeding He worked in Zaire from 1965 to 1966 He began to research endocrinology with Donald Farner in Washington and examined circadian rhythms at Stanford with Colin Pittendrigh In 1979 he became head of the Radolfzell observatory and in 1998 he founded the Max Planck Research Centre for Ornithology and served as its director until his death 1 2 He conducted long term experiments on captive stonechats Saxicola torquata and garden warblers Sylvia borin some kept for nearly twelve years under controlled environmental conditions and demonstrated that there were endogenous annual rhythms in the body that continued to show even when the birds were maintained under constant and artificial day night durations 3 4 5 He examined proximate control mechanisms such as melatonin secretion by the pineal gland 6 and the response to photoperiod He examined if photoperiod directly controlled rhythms or whether they merely synchronized the internal rhythms acting as a zeitgeber time giver 7 References edit Daan Serge Hau Michaela 2004 Eberhard Gwinner 1938 2004 Journal of Biological Rhythms 19 6 463 464 doi 10 1177 0748730404271238 ISSN 0748 7304 S2CID 83556903 Holberton Rebecca L Able Kenneth P 2005 In Memoriam Eberhard Gwinner 1938 2004 The Auk 122 3 1013 1015 doi 10 1093 auk 122 3 1013 ISSN 0004 8038 JSTOR 4090613 Brandstaetter Roland Krebs John 2004 Eberhard Gwinner 1938 2004 Nature 432 7018 687 doi 10 1038 432687a ISSN 0028 0836 PMID 15592399 S2CID 5588238 Gwinner Eberhard Scheuerlein Alexander 1998 Seasonal changes in day light intensity as a potential zeitgeber of circannual rhythms in equatorial Stonechats Journal fur Ornithologie 139 4 407 412 doi 10 1007 BF01653467 ISSN 0021 8375 S2CID 9349916 Gwinner Eberhard 2008 Circannual clocks in avian reproduction and migration Ibis 138 1 47 63 doi 10 1111 j 1474 919X 1996 tb04312 x Gwinner Eberhard Helm Barbara 2003 Berthold Peter Gwinner Eberhard Sonnenschein Edith eds Circannual and Circadian Contributions to the Timing of Avian Migration Avian Migration Berlin Heidelberg Springer Berlin Heidelberg pp 81 95 doi 10 1007 978 3 662 05957 9 5 ISBN 978 3 642 07780 7 retrieved 2021 04 28 Cornelius J M Boswell T Jenni Eiermann S Breuner C W Ramenofsky M 2013 Contributions of endocrinology to the migration life history of birds General and Comparative Endocrinology 190 47 60 doi 10 1016 j ygcen 2013 03 027 PMID 23602795 Retrieved from https en wikipedia org w index php title Eberhard Gwinner amp oldid 1186815564, wikipedia, wiki, book, books, library,
