| Full text | |
| Author(s): |
Flores, Danilo E. F. L.
[1]
;
Jannetti, Milene G.
[1]
;
Improta, Giovane C.
[1]
;
Tachinardi, Patricia
[1]
;
Valentinuzzi, Veronica S.
[2]
;
Oda, Gisele A.
[1]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, Inst Biociencias, Dept Fisiol, Lab Cronobiol Binacl Argentina Brasil, Sao Paulo - Brazil
[2] Ctr Reg Invest Cient & Transferencia Tecnol CRILA, Lab Cronobiol Binacl Argentina Brasil, Anillaco - Argentina
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | FRONTIERS IN PHYSIOLOGY; v. 12, OCT 1 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Living organisms anticipate the seasons by tracking the proportion of light and darkness hours within a day-photoperiod. The limits of photoperiod measurement can be investigated in the subterranean rodents tuco-tucos (Ctenomys aff. knighti), which inhabit dark underground tunnels. Their exposure to light is sporadic and, remarkably, results from their own behavior of surface emergence. Thus, we investigated the endogenous and exogenous regulation of this behavior and its consequences to photoperiod measurement. In the field, animals carrying biologgers displayed seasonal patterns of daily surface emergence, exogenously modulated by temperature. In the laboratory, experiments with constant lighting conditions revealed the endogenous regulation of seasonal activity by the circadian clock, which has a multi-oscillatory structure. Finally, mathematical modeling corroborated that tuco-tuco's light exposure across the seasons is sufficient for photoperiod encoding. Together, our results elucidate the interrelationship between the circadian clock and temperature in shaping seasonal light exposure patterns that convey photoperiod information in an extreme photic environment.</p> (AU) | |
| FAPESP's process: | 17/16242-4 - Computational studies on photoperiodism in light and food synchronization of multi-oscillatory circadian systems |
| Grantee: | Danilo Eugênio de França Laurindo Flôres |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 10/03565-0 - Characterization of the circadian rhythm of body temperature in subterranean rodents (Ctenomys cf. knighti) |
| Grantee: | Patricia Tachinardi Andrade Silva |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 19/26752-5 - Seasonality and photoperiodism in South American subterranean rodents under field and laboratory conditions |
| Grantee: | Gisele Akemi Oda |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/25968-6 - Photoperiodism in tuco-tuco (Ctenomys aff. knighti), a subterranean rodent |
| Grantee: | Giovane Carreira Improta |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 17/19680-2 - Photoperiodism in South American subterranean rodents under field and laboratory conditions |
| Grantee: | Gisele Akemi Oda |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/25058-0 - Seasonality of daily surface activity patterns on a subterranean rodent, the tuco-tuco |
| Grantee: | Milene Gomes Jannetti |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 17/22973-1 - Investigation of seasonality and plasticity of daily activity patterns in a subterranean rodent (Ctenomys aff. knighti) using noninvasive methods of endocrine monitoring |
| Grantee: | Patricia Tachinardi Andrade Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |