Photoresponsivity and motility in the planarian Schmidtea mediterranea vary diurnally.
Chronobiol Int
; 36(12): 1789-1793, 2019 12.
Article
en En
| MEDLINE
| ID: mdl-31645137
ABSTRACT
The planarian flatworm has become one of the leading animal model systems for studying stem cell behavior and tissue regeneration. Recent studies have shown that components of the circadian clockwork have important roles in tissue homeostasis and repair. However, it remains unknown whether planarians exhibit circadian or diurnal rhythms in physiology or behavior. Here, we developed a behavioral assay to evaluate diurnal activity in planarians based upon their well-established propensity to swim away from light (negative phototaxis). We show evidence that the planarian Schmidtea mediterranea has diurnal variability in negative phototaxis as a function of daily variation in motility. We also demonstrate that variation in planarian motility over 48 h occurs with 24-h periodicity. Our data suggest that S. mediterranea may be a useful model for studying the interplay between the circadian system and tissue regeneration.
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Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Planarias
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Ritmo Circadiano
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Fototaxis
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Luz
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Actividad Motora
Idioma:
En
Revista:
Chronobiol Int
Asunto de la revista:
FISIOLOGIA
Año:
2019
Tipo del documento:
Article