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Monecke S. Threatened chronotopes: can chronobiology help endangered species? J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2024:10.1007/s00359-024-01692-8. [PMID: 38421416 DOI: 10.1007/s00359-024-01692-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 01/13/2024] [Accepted: 01/31/2024] [Indexed: 03/02/2024]
Abstract
Pittendrigh and Daan's 1976 article "Pacemaker structure: A clock for all seasons" marks the foundation of modern seasonal chronobiology. It proposed the internal coincidence model comprised of a Morning (M) and Evening (E) oscillator, which are coupled but synchronized separately by dawn and dusk. It has become an attractive model to explain the seasonal adaptation of circadian rhythms. Using the example of the European hamster, this article connects the classical entrainment concept to species decline and, ultimately, conservation concepts. Seasonality of this species is well studied and circannual rhythms have been described in at least 32 parameters. The European hamster is listed as critically endangered on the International Union for Conservation of Nature (IUCN) red list. Changes in the temporal structure of the environment (the chronotope) caused by climate change and light pollution might be responsible for the global decline. The article shows that classical chronobiological concepts such as the internal coincidence model (Pittendrigh and Daan Pittendrigh and Daan, J Comp Physiol [a] 106:333-355, 1976) are helpful to understand the (chronobiological) causes of the decline and can potentially support species conservation. Knowing the species' physiological limitations as well as its adaptation capacities can potentially prevent its extinction at a time when classical conservation concepts have reached their limits.
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Tissier ML, Marchandeau S, Habold C, Handrich Y, Eidenschenck J, Kourkgy C. Weeds as a predominant food source: a review of the diet of common hamsters
Cricetus cricetus
in farmlands and urban habitats. Mamm Rev 2019. [DOI: 10.1111/mam.12149] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Mathilde L. Tissier
- Office National de la Chasse et de la Faune Sauvage Au bord du Rhin F‐67150 Gerstheim France
| | | | - Caroline Habold
- Université de StrasbourgCNRSIPHC UMR 7178 F‐67000 Strasbourg France
| | - Yves Handrich
- Université de StrasbourgCNRSIPHC UMR 7178 F‐67000 Strasbourg France
| | - Julien Eidenschenck
- Office National de la Chasse et de la Faune Sauvage Au bord du Rhin F‐67150 Gerstheim France
| | - Charlotte Kourkgy
- Office National de la Chasse et de la Faune Sauvage Au bord du Rhin F‐67150 Gerstheim France
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Sáenz de Miera C, Sage-Ciocca D, Simonneaux V, Pévet P, Monecke S. Melatonin-independent Photoperiodic Entrainment of the Circannual TSH Rhythm in the Pars Tuberalis of the European Hamster. J Biol Rhythms 2018; 33:302-317. [DOI: 10.1177/0748730418766601] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Cristina Sáenz de Miera
- Department of Neurobiology of Rhythms, Institute for Cellular and Integrative Neuroscience, University of Strasbourg, Strasbourg, France
| | | | - Valérie Simonneaux
- Department of Neurobiology of Rhythms, Institute for Cellular and Integrative Neuroscience, University of Strasbourg, Strasbourg, France
| | - Paul Pévet
- Department of Neurobiology of Rhythms, Institute for Cellular and Integrative Neuroscience, University of Strasbourg, Strasbourg, France
| | - Stefanie Monecke
- Department of Neurobiology of Rhythms, Institute for Cellular and Integrative Neuroscience, University of Strasbourg, Strasbourg, France
- Institute of Chronoecology, Stuttgart, Germany, and Ludwig Maximilians University, Institute of Medical Psychology, Munich, Germany
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Surov A, Banaszek A, Bogomolov P, Feoktistova N, Monecke S. Dramatic global decrease in the range and reproduction rate of the European hamster Cricetus cricetus. ENDANGER SPECIES RES 2016. [DOI: 10.3354/esr00749] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Monecke S, Amann B, Lemuth K, Wollnik F. Dual control of seasonal time keeping in male and female juvenile European hamsters. Physiol Behav 2014; 130:66-74. [DOI: 10.1016/j.physbeh.2014.03.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 03/13/2014] [Indexed: 01/19/2023]
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Monecke S, Sage-Ciocca D, Wollnik F, Pévet P. Photoperiod Can Entrain Circannual Rhythms in Pinealectomized European Hamsters. J Biol Rhythms 2013; 28:278-90. [DOI: 10.1177/0748730413498561] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In mammals, the pineal hormone melatonin is thought to be essential to process environmental photoperiodic information. In this study, we demonstrate in a circannual species, the European hamster Cricetus cricetus, the existence of a melatonin-independent second pathway. In 4 physiological parameters (reproduction, body weight, activity pattern, body temperature), a large majority of pinealectomized European hamsters were entrained to an accelerated photoperiodic regime. It compressed the natural variations in the photoperiod to a 6-month cycle, which allowed us to record up to 6 complete physiological cycles during the life span of the individuals. We show further that whether a pinealectomized animal is able to entrain to changes in the photoperiod is influenced by the season of pinealectomy. The results do not disprove that melatonin is capable of entraining a circannual rhythm, but they show clearly that melatonin is not necessary, demonstrating another melatonin-independent pathway for circannual entrainment by the photoperiod. In view of these new insights, a revision of the original literature revealed that probably the melatonin-independent pathway plays an important role in most circannual mammals but only a minor role in photoperiodic species. Thus, the present work provides also the first evidence for different synchronization mechanisms in photoperiodic and circannual species.
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Affiliation(s)
- Stefanie Monecke
- Institute for cellular and integrative neuroscience (INCI), Department Neurobiology of Rhythms, University of Strasbourg, Strasbourg, France
| | | | - Franziska Wollnik
- Biological Institute, Department of Animal Physiology, University of Stuttgart, Stuttgart, Germany
| | - Paul Pévet
- Institute for cellular and integrative neuroscience (INCI), Department Neurobiology of Rhythms, University of Strasbourg, Strasbourg, France
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Lone SR, Ilangovan V, Murugan M, Sharma VK. Short- and long-day responses in the pre-adult developmental duration of two species of Camponotus ants. Chronobiol Int 2011; 28:163-9. [PMID: 21231878 DOI: 10.3109/07420528.2010.536616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We assessed the effect of different day/night lengths on the pre-adult developmental time of two species of Camponotus ants that normally develop in dark underground nests. We assayed larval (egg-to-pupal formation), pupal (pupal formation-to-adult emergence), and pre-adult (egg-to-adult emergence) durations in these ants under three different light/dark (LD) cycles of 12:12 h, 10:14 h, and 14:10 h. We observed that the pre-adult development time of ants under these day lengths was significantly different. Although both species developed fastest under 12:12 h LD, when asymmetric LD cycles were compared, night-active species (Camponotus compressus) developed faster under short days (10:14 h) and day-active species (C. paria) developed faster under long days (14:10 h). This day/night-length-mediated difference in pre-adult developmental duration was mostly due to modulation of larval duration; however, in day-active species it was also via altered pupal duration. These results thus indicate that the two species of Camponotus ants respond differently to short and long days, suggesting that seasonal timers regulate pre-adult development time in tropical ant species living in dark underground nests.
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Affiliation(s)
- Shahnaz Rahman Lone
- Chronobiology Laboratory, Evolutionary and Organismal Biology Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka, India
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Hanon EA, Routledge K, Dardente H, Masson-Pévet M, Morgan PJ, Hazlerigg DG. Effect of photoperiod on the thyroid-stimulating hormone neuroendocrine system in the European hamster (Cricetus cricetus). J Neuroendocrinol 2010; 22:51-5. [PMID: 19912472 DOI: 10.1111/j.1365-2826.2009.01937.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Recent studies have characterised a retrograde mechanism whereby the pineal hormone melatonin acts in the pars tuberalis (PT) of the pituitary gland to control thyroid hormone action in the hypothalamus, leading to changes in seasonal reproductive function. This involves the release of thyroid-stimulating hormone (TSH) from PT that activates type II deiodinase (DIO2) gene expression in hypothalamic ependymal cells, locally generating biologically active T3, and thus triggering a neuroendocrine cascade. In the present study, we investigated whether a similar regulatory mechanism operates in the European hamster. This species utilises both melatonin signalling and a circannual timer to time the seasonal reproductive cycle. We found that expression of betaTSH RNA in the PT was markedly increased under long compared to short photoperiod, whereas TSH receptor expression was localised in the ependymal cells lining the third ventricle, and in the PT, where its expression varied with time and photoperiod. In the ependymal cells at the base of the third ventricle, DIO2 and type III deiodinase (DIO3) expression was reciprocally regulated, with DIO2 activated under long and repressed under short photoperiod, and the reverse case for DIO3. These data are consistent with recent observations in sheep, and suggest that the PT TSH third ventricle-ependymal cell relay plays a conserved role in initiating the photoperiodic response in both long- and short-day breeding mammals.
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Affiliation(s)
- E A Hanon
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
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Monecke S, Saboureau M, Malan A, Bonn D, Masson-Pévet M, Pévet P. Circannual phase response curves to short and long photoperiod in the European hamster. J Biol Rhythms 2009; 24:413-26. [PMID: 19755586 DOI: 10.1177/0748730409344502] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study investigated in male European hamsters (Cricetus cricetus ) whether entrainment of circannual rhythms follows the principles of the nonparametric entrainment model. In 2 experiments the times of the year when long (LP) or short photoperiod (SP) are able to synchronize the reproductive cycle were determined, by recording phase response curves (PRCs). A total of 28 groups of 10 hamsters were synchronized by SP, before being subjected to 2 converse experiments: a) 14 groups were transferred to constant LP, only interrupted by SP for 1 month (SP-pulse), the pulse being increasingly delayed between groups by 2 weeks or 1 month steps; and b) the remaining 14 groups stayed in constant SP interrupted by LP for 1 month (LP-pulse) at different phases of the cycle. In a 3rd experiment 5 groups of 10 European hamsters were subjected to constant LP interrupted by 1-month SP-pulses in regular non-365-day zeitgeber intervals (circannual T-cycles) differing between groups (c). The reproductive state was checked every 2 or 4 weeks. The PRCs revealed that an SP-pulse had a very strong phase-resetting capability of -180 degrees to at least +81 degrees in subjective summer (a). During subjective winter when the animals hibernate, a SP-pulse had only weak effectiveness (a) whereas an LP-pulse advanced the circannual clock by up to +41 degrees (b). In the latter conditions a further advance of up to +156 degrees was achieved by the decrease in photoperiod at the return to SP conditions, which terminated the reproductive phase already after 4 to 5 weeks. In different circannual T-cycles the animals entrained for at least 2 cycles (c). In conclusion, 1) the circannual rhythm of European hamsters can be entrained by one photoperiodic signal per cycle, 2) the decrease in photoperiod is most important for its synchronization, and 3) as in circadian clocks the resetting of circannual clocks follows the principles of the nonparametric entrainment model.
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Affiliation(s)
- Stefanie Monecke
- Institut des Neurosciences Cellulaires et Intégratives (INCI), Neurobiologie des Rythmes, CNRS UPR-3212, Université de Strasbourg, Strasbourg, France.
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