How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas.
In this work, we study if ploidy (i.e. number of copies of chromosomes) in the oyster Crassostrea gigas may introduce differences in behavior and in its synchronization by the annual photoperiod. To answer to the question about the effect of the seasonal course of the photoperiod on the behavior of...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2017-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5636115?pdf=render |
| _version_ | 1811224085619802112 |
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| author | Laura Payton Mohamedou Sow Jean-Charles Massabuau Pierre Ciret Damien Tran |
| author_facet | Laura Payton Mohamedou Sow Jean-Charles Massabuau Pierre Ciret Damien Tran |
| author_sort | Laura Payton |
| collection | DOAJ |
| description | In this work, we study if ploidy (i.e. number of copies of chromosomes) in the oyster Crassostrea gigas may introduce differences in behavior and in its synchronization by the annual photoperiod. To answer to the question about the effect of the seasonal course of the photoperiod on the behavior of C. gigas according to its ploidy, we quantified valve activity by HFNI valvometry in situ for 1 year in both diploid and triploid oysters. Chronobiological analyses of daily, tidal and lunar rhythms were performed according the annual change of the photoperiod. In parallel, growth and gametogenesis status were measured and spawning events were detected by valvometry. The results showed that triploids had reduced gametogenesis, without spawning events, and approximately three times more growth than diploids. These differences in physiological efforts could explain the result that photoperiod (daylength and/or direction of daylength) differentially drives and modulates seasonal behavior of diploid and triploid oysters. Most differences were observed during long days (spring and summer), where triploids showed longer valve opening duration but lower opening amplitude, stronger daily rhythm and weaker tidal rhythm. During this period, diploids did major gametogenesis and spawning whereas triploids did maximal growth. Differences were also observed in terms of moonlight rhythmicity and neap-spring tidal cycle rhythmicity. We suggest that the seasonal change of photoperiod differentially synchronizes oyster behavior and biological rhythms according to physiological needs based on ploidy. |
| first_indexed | 2024-04-12T08:44:08Z |
| format | Article |
| id | doaj.art-9bc042fbc8a14a23895460e49bdb6c9d |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-12T08:44:08Z |
| publishDate | 2017-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-9bc042fbc8a14a23895460e49bdb6c9d2022-12-22T03:39:47ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-011210e018591810.1371/journal.pone.0185918How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas.Laura PaytonMohamedou SowJean-Charles MassabuauPierre CiretDamien TranIn this work, we study if ploidy (i.e. number of copies of chromosomes) in the oyster Crassostrea gigas may introduce differences in behavior and in its synchronization by the annual photoperiod. To answer to the question about the effect of the seasonal course of the photoperiod on the behavior of C. gigas according to its ploidy, we quantified valve activity by HFNI valvometry in situ for 1 year in both diploid and triploid oysters. Chronobiological analyses of daily, tidal and lunar rhythms were performed according the annual change of the photoperiod. In parallel, growth and gametogenesis status were measured and spawning events were detected by valvometry. The results showed that triploids had reduced gametogenesis, without spawning events, and approximately three times more growth than diploids. These differences in physiological efforts could explain the result that photoperiod (daylength and/or direction of daylength) differentially drives and modulates seasonal behavior of diploid and triploid oysters. Most differences were observed during long days (spring and summer), where triploids showed longer valve opening duration but lower opening amplitude, stronger daily rhythm and weaker tidal rhythm. During this period, diploids did major gametogenesis and spawning whereas triploids did maximal growth. Differences were also observed in terms of moonlight rhythmicity and neap-spring tidal cycle rhythmicity. We suggest that the seasonal change of photoperiod differentially synchronizes oyster behavior and biological rhythms according to physiological needs based on ploidy.http://europepmc.org/articles/PMC5636115?pdf=render |
| spellingShingle | Laura Payton Mohamedou Sow Jean-Charles Massabuau Pierre Ciret Damien Tran How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas. PLoS ONE |
| title | How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas. |
| title_full | How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas. |
| title_fullStr | How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas. |
| title_full_unstemmed | How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas. |
| title_short | How annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters, Crassostrea gigas. |
| title_sort | how annual course of photoperiod shapes seasonal behavior of diploid and triploid oysters crassostrea gigas |
| url | http://europepmc.org/articles/PMC5636115?pdf=render |
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