Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana

Abstract Visual display is a crucial aspect of courtship, and their success relies on both display quality and the surrounding environment, such as the visual background. Cephalopods may release ink when attacked by predators or during aggressive interactions with conspecifics. Here, we report that...

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Main Authors: Arata Nakayama, Shunsuke Momoi, Noriyosi Sato, Tomohiko Kawamura, Yoko Iwata
Format: Article
Language:English
Published: Wiley 2024-02-01
Series:Ecology and Evolution
Subjects:
Online Access:https://doi.org/10.1002/ece3.10852
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author Arata Nakayama
Shunsuke Momoi
Noriyosi Sato
Tomohiko Kawamura
Yoko Iwata
author_facet Arata Nakayama
Shunsuke Momoi
Noriyosi Sato
Tomohiko Kawamura
Yoko Iwata
author_sort Arata Nakayama
collection DOAJ
description Abstract Visual display is a crucial aspect of courtship, and their success relies on both display quality and the surrounding environment, such as the visual background. Cephalopods may release ink when attacked by predators or during aggressive interactions with conspecifics. Here, we report that ink is used as a part of the courtship display by males of the cuttlefish species Sepia andreana. Males of this species engage in a highly ritualized multimodal courtship using a pair of markedly long sexually dimorphic arms. At the climax of the courtship, the male releases a diffuse backdrop of ink near himself and then performs the specific courtship display by extending his sexually dimorphic arms and altering his body pattern to pale in front of this ink backdrop, and then proceeds to mate. This novel use of cephalopod ink could make the surroundings darker and more homogeneous, potentially serving as a temporary modification of the visual environment for courtship display.
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spelling doaj.art-9b97b569fb124fc8b1049825a5bce2ae2024-02-29T08:56:39ZengWileyEcology and Evolution2045-77582024-02-01142n/an/a10.1002/ece3.10852Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreanaArata Nakayama0Shunsuke Momoi1Noriyosi Sato2Tomohiko Kawamura3Yoko Iwata4Atmosphere and Ocean Research Institute The University of Tokyo Kashiwa Chiba JapanAquarium Asamushi Aomori JapanSchool of Marine Science and Technology Tokai University Shimizu Shizuoka JapanAtmosphere and Ocean Research Institute The University of Tokyo Kashiwa Chiba JapanAtmosphere and Ocean Research Institute The University of Tokyo Kashiwa Chiba JapanAbstract Visual display is a crucial aspect of courtship, and their success relies on both display quality and the surrounding environment, such as the visual background. Cephalopods may release ink when attacked by predators or during aggressive interactions with conspecifics. Here, we report that ink is used as a part of the courtship display by males of the cuttlefish species Sepia andreana. Males of this species engage in a highly ritualized multimodal courtship using a pair of markedly long sexually dimorphic arms. At the climax of the courtship, the male releases a diffuse backdrop of ink near himself and then performs the specific courtship display by extending his sexually dimorphic arms and altering his body pattern to pale in front of this ink backdrop, and then proceeds to mate. This novel use of cephalopod ink could make the surroundings darker and more homogeneous, potentially serving as a temporary modification of the visual environment for courtship display.https://doi.org/10.1002/ece3.10852Cephalopodacuttlefishinkreproductive behaviorsexual dimorphism
spellingShingle Arata Nakayama
Shunsuke Momoi
Noriyosi Sato
Tomohiko Kawamura
Yoko Iwata
Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana
Ecology and Evolution
Cephalopoda
cuttlefish
ink
reproductive behavior
sexual dimorphism
title Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana
title_full Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana
title_fullStr Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana
title_full_unstemmed Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana
title_short Ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish Sepia andreana
title_sort ritualized ink use during visual courtship display by males of the sexually dimorphic cuttlefish sepia andreana
topic Cephalopoda
cuttlefish
ink
reproductive behavior
sexual dimorphism
url https://doi.org/10.1002/ece3.10852
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