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Long photoperiod impairs learning in male but not female medaka

Day length in conjunction with seasonal cycles affects many aspects of animal biology. We have studied photoperiod-dependent alterations of complex behavior in the teleost, medaka (Oryzias latipes), a photoperiodic breeder, in a learning paradigm whereby fish have to activate a sensor to obtain a fo...

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Autores principales: López-Olmeda, Jose Fernando, Zhao, Haiyu, Reischl, Markus, Pylatiuk, Christian, Lucon-Xiccato, Tyrone, Loosli, Felix, Foulkes, Nicholas S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8283132/
https://www.ncbi.nlm.nih.gov/pubmed/34308290
http://dx.doi.org/10.1016/j.isci.2021.102784
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author López-Olmeda, Jose Fernando
Zhao, Haiyu
Reischl, Markus
Pylatiuk, Christian
Lucon-Xiccato, Tyrone
Loosli, Felix
Foulkes, Nicholas S.
author_facet López-Olmeda, Jose Fernando
Zhao, Haiyu
Reischl, Markus
Pylatiuk, Christian
Lucon-Xiccato, Tyrone
Loosli, Felix
Foulkes, Nicholas S.
author_sort López-Olmeda, Jose Fernando
collection PubMed
description Day length in conjunction with seasonal cycles affects many aspects of animal biology. We have studied photoperiod-dependent alterations of complex behavior in the teleost, medaka (Oryzias latipes), a photoperiodic breeder, in a learning paradigm whereby fish have to activate a sensor to obtain a food reward. Medaka were tested under a long (14:10 LD) and short (10:14 LD) photoperiod in three different groups: mixed-sex, all-males, and all-females. Under long photoperiod, medaka mixed-sex groups learned rapidly with a stable response. Unexpectedly, males-only groups showed a strong learning deficit, whereas females-only groups performed efficiently. In mixed-sex groups, female individuals drove group learning, whereas males apparently prioritized mating over feeding behavior resulting in strongly reduced learning performance. Under short photoperiod, where medaka do not mate, male performance improved to a level similar to that of females. Thus, photoperiod has sex-specific effects on the learning performance of a seasonal vertebrate.
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spelling pubmed-82831322021-07-22 Long photoperiod impairs learning in male but not female medaka López-Olmeda, Jose Fernando Zhao, Haiyu Reischl, Markus Pylatiuk, Christian Lucon-Xiccato, Tyrone Loosli, Felix Foulkes, Nicholas S. iScience Article Day length in conjunction with seasonal cycles affects many aspects of animal biology. We have studied photoperiod-dependent alterations of complex behavior in the teleost, medaka (Oryzias latipes), a photoperiodic breeder, in a learning paradigm whereby fish have to activate a sensor to obtain a food reward. Medaka were tested under a long (14:10 LD) and short (10:14 LD) photoperiod in three different groups: mixed-sex, all-males, and all-females. Under long photoperiod, medaka mixed-sex groups learned rapidly with a stable response. Unexpectedly, males-only groups showed a strong learning deficit, whereas females-only groups performed efficiently. In mixed-sex groups, female individuals drove group learning, whereas males apparently prioritized mating over feeding behavior resulting in strongly reduced learning performance. Under short photoperiod, where medaka do not mate, male performance improved to a level similar to that of females. Thus, photoperiod has sex-specific effects on the learning performance of a seasonal vertebrate. Elsevier 2021-06-25 /pmc/articles/PMC8283132/ /pubmed/34308290 http://dx.doi.org/10.1016/j.isci.2021.102784 Text en © 2021 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
López-Olmeda, Jose Fernando
Zhao, Haiyu
Reischl, Markus
Pylatiuk, Christian
Lucon-Xiccato, Tyrone
Loosli, Felix
Foulkes, Nicholas S.
Long photoperiod impairs learning in male but not female medaka
title Long photoperiod impairs learning in male but not female medaka
title_full Long photoperiod impairs learning in male but not female medaka
title_fullStr Long photoperiod impairs learning in male but not female medaka
title_full_unstemmed Long photoperiod impairs learning in male but not female medaka
title_short Long photoperiod impairs learning in male but not female medaka
title_sort long photoperiod impairs learning in male but not female medaka
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8283132/
https://www.ncbi.nlm.nih.gov/pubmed/34308290
http://dx.doi.org/10.1016/j.isci.2021.102784
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