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Diatroptov ME, Diatroptova MA. Possible External Factors Determining Ultradian (4-20-min) Rhythms of Body Temperature. Bull Exp Biol Med 2021; 171:783-788. [PMID: 34709514 DOI: 10.1007/s10517-021-05316-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Indexed: 11/25/2022]
Abstract
The study examined the effect of passive magnetic shielding on the magnitude of rhythmic oscillations of body temperature (BT) with 4-20 min periods in mice and their correlation with similar oscillations in unshielded control group. A magnetic permalloy screen that 35-fold attenuates the total geomagnetic field and decreased the undulations of magnetic field with the periods of few minutes by 5 times, produced no effect on the mean amplitude of BT oscillations within the same period range, their spectral power, and the cross-spectral density of examined rhythms in comparison with the control (unshielded) mice. Thus, either the mice possess a very sensitive magnetic sensory system or there exists an external non-magnetic factor affecting rhythmicity of BT. The study advanced intensity of thermal neutron radiation near the Earth's surface known to reflect the flow of accelerated particles generated by the secondary cosmic rays as the external factor, which strongly correlates with BT rhythms revealed by cross-spectrum analysis.
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Affiliation(s)
- M E Diatroptov
- A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Science, Moscow, Russia.
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Diatroptov ME, Opaev AS, Surov AV. Ultradian Rhythms of Body Temperature Are Associated with Temperament in Greenfinch (Chloris chloris, Fringillidae, Aves). DOKLADY BIOLOGICAL SCIENCES : PROCEEDINGS OF THE ACADEMY OF SCIENCES OF THE USSR, BIOLOGICAL SCIENCES SECTIONS 2021; 499:93-96. [PMID: 34462833 DOI: 10.1134/s0012496621040025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/24/2021] [Accepted: 03/24/2021] [Indexed: 06/13/2023]
Abstract
Previously, in male Greenfinch, we have described ultradian rhythms of body temperature with periods of 3-6, 8-10, 12-20, and 40-60 min. There are individual variations in this rhythmicity. Rhythms with a period of 3-7 min are more characteristic of some males but not for the others. These males had small values of the ratio of the harmonic spectral density in the range of 12-20 min to the harmonic spectral density in the range of 3-7 min. In this study, we hypothesized that ultradian rhythmicity of body temperature fluctuations is related to the nervous system activity in general and to temperament in particular. We have conducted two sets of experiments for estimating the aggression level (n = 12 males) and reaction to novelty (n = 17). Individuals with predominant rhythms with a period of 3-7 min are less aggressive and more slowly adapt to new conditions. Thus, the ultradian body temperature rhythmicity in Greenfinch is related to their behavioral features and temperament.
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Affiliation(s)
- M E Diatroptov
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071, Moscow, Russia.
| | - A S Opaev
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071, Moscow, Russia
| | - A V Surov
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071, Moscow, Russia
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Huffeldt NP, Tigano A, Erikstad KE, Goymann W, Jenni-Eiermann S, Moum T, Reiertsen TK. The relationship between daily behavior, hormones, and a color dimorphism in a seabird under natural continuous light. Horm Behav 2021; 130:104930. [PMID: 33497708 DOI: 10.1016/j.yhbeh.2021.104930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/19/2020] [Accepted: 01/04/2021] [Indexed: 11/18/2022]
Abstract
The predictable oscillation between the light of day and the dark of night across the diel cycle is a powerful selective force that has resulted in anticipatory mechanisms in nearly all taxa. At polar latitude, however, this oscillation becomes highly attenuated during the continuous light of polar day during summer. A general understanding of how animals keep time under these conditions is poorly understood. We tested the hypothesis that the common murre (a seabird, Uria aalge) can use melatonin and corticosterone, hormones associated with timekeeping, to track the diel cycle despite continuous light. We also tested the assumption that common murres breeding during polar summer schedule their colony attendance by time of day and sex, as they do at subpolar latitude. In the Atlantic population, common murres have a plumage color dimorphism associated with fitness-related traits, and we investigated the relationship of this dimorphism with colony attendance, melatonin, and corticosterone. The common murres did not schedule their attendance behavior by time of day or sex, yet they had higher concentrations of melatonin and, to a more limited extent, corticosterone during "night" than "day". Melatonin also linked to behavioral state. The two color morphs tended to have different colony-attendance behavior and melatonin concentrations, lending support for balancing selection maintaining the plumage dimorphism. In common murres, melatonin can signal time of day despite continuous light, and the limited diel variation of corticosterone contributes to the mounting evidence that polar-adapted birds and mammals require little or no diel variation in circulating glucocorticoids during polar day.
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Affiliation(s)
- Nicholas Per Huffeldt
- Greenland Institute of Natural Resources, 3900 Nuuk, Greenland; Arctic Ecosystem Ecology, Department of Bioscience, Aarhus University, 4000 Roskilde, Denmark; Department of Biology, Wake Forest University, Winston-Salem, NC 27109, USA.
| | - Anna Tigano
- Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham, NH 03824, USA; Hubbard Center for Genome Studies, University of New Hampshire, Durham, NH 03824, USA
| | - Kjell Einar Erikstad
- Norwegian Institute for Nature Research, Fram Centre, 9296 Tromsø, Norway; Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Wolfgang Goymann
- Abteilung für Verhaltensneurobiologie, Max-Planck-Institut für Ornithologie, 82319 Seewiesen, Germany
| | | | - Truls Moum
- Genomics Division, Faculty of Bioscience and Aquaculture, Nord University, 8049 Bodø, Norway
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Agostino PV, Lusk NA, Meck WH, Golombek DA, Peryer G. Daily and seasonal fluctuation in Tawny Owl vocalization timing. PLoS One 2020; 15:e0231591. [PMID: 32294116 PMCID: PMC7159226 DOI: 10.1371/journal.pone.0231591] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 03/26/2020] [Indexed: 12/01/2022] Open
Abstract
A robust adaptation to environmental changes is vital for survival. Almost all living organisms have a circadian timing system that allows adjusting their physiology to cyclic variations in the surrounding environment. Among vertebrates, many birds are also seasonal species, adapting their physiology to annual changes in photoperiod (amplitude, length and duration). Tawny Owls (Strix aluco) are nocturnal birds of prey that use vocalization as their principal mechanism of communication. Diurnal and seasonal changes in vocalization have been described for several vocal species, including songbirds. Comparable studies are lacking for owls. In the present work, we show that male Tawny Owls present a periodic vocalization pattern in the seconds-to-minutes range that is subject to both daily (early vs. late night) and seasonal (spring vs. summer) rhythmicity. These novel theory-generating findings appear to extend the role of the circadian system in regulating temporal events in the seconds-to-minutes range to other species.
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Affiliation(s)
- Patricia V. Agostino
- Department of Science and Technology, National University of Quilmes/CONICET, Buenos Aires, Argentina
| | - Nicholas A. Lusk
- Department of Psychology and Neuroscience, Duke University, Durham, NC, United States of America
| | - Warren H. Meck
- Department of Psychology and Neuroscience, Duke University, Durham, NC, United States of America
| | - Diego A. Golombek
- Department of Science and Technology, National University of Quilmes/CONICET, Buenos Aires, Argentina
| | - Guy Peryer
- School of Health Sciences, University of East Anglia, Norwich, England, United Kingdom
- * E-mail:
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Malek I, Haim A, Izhaki I. Melatonin mends adverse temporal effects of bright light at night partially independent of its effect on stress responses in captive birds. Chronobiol Int 2019; 37:189-208. [DOI: 10.1080/07420528.2019.1698590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- I. Malek
- Department of Evolutionary and Environmental Biology, University of Haifa, Haifa, Israel
| | - A. Haim
- The Israeli Centre for Interdisciplinary Research in Chronobiology, University of Haifa, Haifa, Israel
| | - I. Izhaki
- Department of Evolutionary and Environmental Biology, University of Haifa, Haifa, Israel
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