Difference in control between spring and autumn migration in birds: insight from seasonal changes in hypothalamic gene expression in captive buntings

Proceedings. Biological Sciences
Aakansha SharmaVinod Kumar

Abstract

We hypothesized differences in molecular strategies for similar journeys that migrants undertake to reproduce in spring and to overwinter in autumn. We tested this in redheaded buntings (Emberiza bruniceps) photoinduced into spring and autumn migratory states, with winter and summer non-migratory states as controls. Compared with controls, buntings fattened, gained weight and showed Zugunruhe (nocturnal migratory restlessness) in the migratory state. Spring migration was associated with greater fat and body mass, and higher intensity of Zugunruhe, compared with autumn migration. Circulating corticosterone levels were higher in spring, while T3 levels were higher in autumn. Hypothalamic expression of thyroid hormone-responsive (dio2, dio3), light-responsive (per2, cry1, adcyap1) and th (tyrosine hydroxylase, involved in dopamine biosynthesis) genes showed significant changes with transition from non-migratory to the migratory state. There were significantly higher mRNA expressions in autumn, except for higher th levels in the spring. Furthermore, the expression patterns of dnmt3a (not dnmt3b) and tet2 genes suggested an epigenetic difference between the non-migrant and migrant periods, and the spring and autumn migrant periods. ...Continue Reading

References

Feb 24, 2001·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·U TotzkeF Bairlein
Mar 7, 2002·Physiological and Biochemical Zoology : PBZ·Meta M Landys-CiannelliUNKNOWN Castricum Ringing Group
Jun 10, 2005·Journal of Experimental Zoology. Part A, Comparative Experimental Biology·Sangeeta RaniVinod Kumar
Jul 13, 2007·Frontiers in Neuroendocrinology·Jacques Balthazart, Gregory F Ball
Mar 28, 2009·Proceedings. Biological Sciences·P HenningssonA Hedenström
Feb 18, 2011·Proceedings. Biological Sciences·Jakob C MuellerBart Kempenaers
Jul 12, 2012·Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology·Lisa D MooreGuoping Fan
Apr 23, 2013·General and Comparative Endocrinology·J M CorneliusM Ramenofsky
May 15, 2013·The American Naturalist·Cecilia NilssonThomas Alerstam
Jul 16, 2013·General and Comparative Endocrinology·Chandra Mohini Chaturvedi, Suneeta Yadav
Sep 27, 2013·Proceedings of the National Academy of Sciences of the United States of America·Tyler J Stevenson, Brian J Prendergast
Apr 11, 2014·Biology Letters·Cas EikenaarFranz Bairlein
Sep 23, 2014·Physiological and Biochemical Zoology : PBZ·Dominique N WagnerTony D Williams
Jun 25, 2015·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Devraj SinghVinod Kumar
Jun 14, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Tyler J Stevenson, Vinod Kumar
Dec 10, 2017·Trends in Genetics : TIG·Tyler J Stevenson

❮ Previous
Next ❯

Citations

Dec 5, 2019·Journal of Neuroendocrinology·Chris S CoyleTyler John Stevenson
Jun 18, 2020·Proceedings. Biological Sciences·Stefania CasagrandeScott R McWilliams
Sep 2, 2020·Integrative and Comparative Biology·Elisabetta Tolla, Tyler J Stevenson
Aug 15, 2019·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Sayantan SurVinod Kumar
Jun 10, 2021·The Journal of Experimental Biology·Aakansha SharmaVinod Kumar

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Migration

Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.

Cardiovascular Disease & TET2

Cardiovascular diseases are the number one cause of deaths globally. Tet methylcytosine dioxygenase 2 (TET2)-mediated hematopoiesis has been implicated in accelerating heart failure. Here is the latest research on cardiovascular diseases and TET2.