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

Clarissa de Almeida Moura, Jéssica Polyana da Silva Lima, Vanessa Augusta Magalhães Silveira, Mário André Leocadio Miguel, Ana Carolina Luchiari*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

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-dark cycle, temperature, food availability or even social stimuli. Because light-dark cycle is the most important environmental 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, we studied the effects of constant light and constant dark on the time-place learning and activity profile in zebrafish. 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.

Original languageEnglish
Pages (from-to)49-57
Number of pages9
JournalBehavioural Processes
Volume138
DOIs
Publication statusPublished - 1 May 2017
Externally publishedYes

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