Time place learning and activity profile under constant light and constant dark in zebrafish (Danio rerio)

• Autor(a) principal: Moura, Clarissa de Almeida
• Data de Publicação: 2017
• Outros Autores: Lima, Jéssica Polyana da Silva, Silveira, Vanessa Augusta Magalhães, Miguel, Mário André Leocadio, Luchiari, Ana Carolina
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/24529
• topic: Time-place learning; Constant dark; Circadian rythym; Chronotype; Constant light

The ability to learn about the signs of variability in space and time is known as time place learning(TPL). To adjust their circadian rhythms, animals use stimuli that change regularly, such as the light-darkcycle, temperature, food availability or even social stimuli. Because light-dark cycle is the most importantenvironmental temporal cue, we asked how a diurnal animal would perform TPL if this cue was removed.Zebrafish has been extensively studied in the chronobiology area due to it diurnal chronotype, thus, westudied the effects of constant light and constant dark on the time-place learning and activity profile inzebrafish. Our data show that while under constant light and dark condition zebrafish was not able of TPL,after 30 days under the constant conditions, constant light led to higher activity level and less significant(robust) 24 h rhythm