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First quantitative evidence of territorial behavior in squid near spawning substrates.

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Τίτλος: First quantitative evidence of territorial behavior in squid near spawning substrates.
Συγγραφείς: Tokioka S; Shiogama Field Station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency, 3-27-5 Shinhama, Shiogama, 985- 0001, Miyagi, Japan. stokioka@aori.u-tokyo.ac.jp., Yamamoto J; Field Science Center for Northern Biosphere, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan., Bower JR; Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, 041-8611, Hokkaido, Japan., Matsui H; Yokohama Field Station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, 236-8648, Kanagawa, Japan., Suzuki S; Shizuoka Prefectural Research Institute of Fishery and Ocean, Iwashigashima, Yaizu, 136-24, 425-0032, Shizuoka, Japan., Sakurai Y; Hakodate Cephalopod Research Center, Hakodate Research Center for Fisheries and Oceans, 20-5 Benten , Hakodate, 040-0051, Hokkaido, Japan.
Πηγή: Scientific reports [Sci Rep] 2025 Aug 08; Vol. 15 (1), pp. 29061. Date of Electronic Publication: 2025 Aug 08.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE
Imprint Name(s): Original Publication: London : Nature Publishing Group, copyright 2011-
Ιατρικοί όροι (MeSH): Decapodiformes*/physiology , Sexual Behavior, Animal*/physiology , Territoriality*, Reproduction/physiology ; Animals ; Male ; Female ; Behavior, Animal
Περίληψη: In loliginid squids, solitary large males have been observed near the spawning grounds in several species, but little is known about their reproductive behavior. Here we describe the behavior of spear squid Heterololigo bleekeri in a 300 m3 tank near spawning substrates. Observations were recorded on their proximity to the spawning substrates, agonistic behavior, and mating behavior. In both of two rearing experiments, individual males were observed to remain near the spawning substrates and display more frequent agonistic behavior than the other males, suggesting they formed territories near the substrates. The territorial males did not monopolize the females themselves or mating opportunities, suggesting that the benefits of territorial tactics are related to the complex fertilization patterns of this species. To our knowledge, this is the first report of territorial behavior in a squid using quantitative data.
(© 2025. The Author(s).)
Competing Interests: Declarations. Competing interests: The authors declare no competing interests.
References: Anim Behav. 1977 Feb;25(1):208-14. (PMID: 857710)
PLoS One. 2016 Feb 12;11(2):e0146995. (PMID: 26872354)
Horm Behav. 2024 Jun;162:105547. (PMID: 38677262)
Anim Behav. 2000 Jan;59(1):183-191. (PMID: 10640380)
Ecol Evol. 2024 Aug 07;14(8):e70111. (PMID: 39114170)
Proc R Soc Lond B Biol Sci. 1989 May 22;236(1285):339-72. (PMID: 2567517)
Lab Anim. 2015 Jul;49(2 Suppl):1-90. (PMID: 26354955)
Biol Bull. 1997 Oct;193(2):212-214. (PMID: 28575590)
Front Physiol. 2019 Oct 15;10:1281. (PMID: 31680998)
Mol Ecol. 2001 May;10(5):1265-78. (PMID: 11380883)
J Evol Biol. 2021 Sep;34(9):1352-1361. (PMID: 34165857)
J Exp Biol. 2015 Dec;218(Pt 23):3825-35. (PMID: 26632456)
PLoS One. 2012;7(8):e41819. (PMID: 22905109)
Curr Biol. 2013 May 6;23(9):775-81. (PMID: 23583548)
PLoS Biol. 2010 Jun 29;8(6):e1000412. (PMID: 20613859)
J Chem Ecol. 2003 Mar;29(3):547-60. (PMID: 12757318)
Curr Biol. 2011 Feb 22;21(4):322-7. (PMID: 21315594)
Oecologia. 2021 Nov;197(3):615-631. (PMID: 34716493)
Grant Information: 16H04963 Japan Society for the Promotion of Science
Contributed Indexing: Keywords: Heterololigo bleekeri; Reproductive tactics; Spear squid; Territoriality
Entry Date(s): Date Created: 20250808 Date Completed: 20250809 Latest Revision: 20250812
Update Code: 20260130
PubMed Central ID: PMC12334606
DOI: 10.1038/s41598-025-14308-1
PMID: 40781269
Βάση Δεδομένων: MEDLINE
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  – Url: https://dx.doi.org/doi:10.1038/s41598-025-14308-1
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  Data: First quantitative evidence of territorial behavior in squid near spawning substrates.
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  Data: <searchLink fieldCode="AU" term="%22Tokioka+S%22">Tokioka S</searchLink>; Shiogama Field Station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency, 3-27-5 Shinhama, Shiogama, 985- 0001, Miyagi, Japan. stokioka@aori.u-tokyo.ac.jp.<br /><searchLink fieldCode="AU" term="%22Yamamoto+J%22">Yamamoto J</searchLink>; Field Science Center for Northern Biosphere, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan.<br /><searchLink fieldCode="AU" term="%22Bower+JR%22">Bower JR</searchLink>; Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, 041-8611, Hokkaido, Japan.<br /><searchLink fieldCode="AU" term="%22Matsui+H%22">Matsui H</searchLink>; Yokohama Field Station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, 236-8648, Kanagawa, Japan.<br /><searchLink fieldCode="AU" term="%22Suzuki+S%22">Suzuki S</searchLink>; Shizuoka Prefectural Research Institute of Fishery and Ocean, Iwashigashima, Yaizu, 136-24, 425-0032, Shizuoka, Japan.<br /><searchLink fieldCode="AU" term="%22Sakurai+Y%22">Sakurai Y</searchLink>; Hakodate Cephalopod Research Center, Hakodate Research Center for Fisheries and Oceans, 20-5 Benten , Hakodate, 040-0051, Hokkaido, Japan.
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  Data: <searchLink fieldCode="JN" term="%22101563288%22">Scientific reports</searchLink> [Sci Rep] 2025 Aug 08; Vol. 15 (1), pp. 29061. <i>Date of Electronic Publication: </i>2025 Aug 08.
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  Data: In loliginid squids, solitary large males have been observed near the spawning grounds in several species, but little is known about their reproductive behavior. Here we describe the behavior of spear squid Heterololigo bleekeri in a 300 m<superscript>3</superscript> tank near spawning substrates. Observations were recorded on their proximity to the spawning substrates, agonistic behavior, and mating behavior. In both of two rearing experiments, individual males were observed to remain near the spawning substrates and display more frequent agonistic behavior than the other males, suggesting they formed territories near the substrates. The territorial males did not monopolize the females themselves or mating opportunities, suggesting that the benefits of territorial tactics are related to the complex fertilization patterns of this species. To our knowledge, this is the first report of territorial behavior in a squid using quantitative data.<br /> (© 2025. The Author(s).)
– Name: Abstract
  Label: Competing Interests
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  Data: Declarations. Competing interests: The authors declare no competing interests.
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  Data: Anim Behav. 1977 Feb;25(1):208-14. (PMID: <searchLink fieldCode="PM" term="%22857710%22">857710)</searchLink><br />PLoS One. 2016 Feb 12;11(2):e0146995. (PMID: <searchLink fieldCode="PM" term="%2226872354%22">26872354)</searchLink><br />Horm Behav. 2024 Jun;162:105547. (PMID: <searchLink fieldCode="PM" term="%2238677262%22">38677262)</searchLink><br />Anim Behav. 2000 Jan;59(1):183-191. (PMID: <searchLink fieldCode="PM" term="%2210640380%22">10640380)</searchLink><br />Ecol Evol. 2024 Aug 07;14(8):e70111. (PMID: <searchLink fieldCode="PM" term="%2239114170%22">39114170)</searchLink><br />Proc R Soc Lond B Biol Sci. 1989 May 22;236(1285):339-72. (PMID: <searchLink fieldCode="PM" term="%222567517%22">2567517)</searchLink><br />Lab Anim. 2015 Jul;49(2 Suppl):1-90. (PMID: <searchLink fieldCode="PM" term="%2226354955%22">26354955)</searchLink><br />Biol Bull. 1997 Oct;193(2):212-214. (PMID: <searchLink fieldCode="PM" term="%2228575590%22">28575590)</searchLink><br />Front Physiol. 2019 Oct 15;10:1281. (PMID: <searchLink fieldCode="PM" term="%2231680998%22">31680998)</searchLink><br />Mol Ecol. 2001 May;10(5):1265-78. (PMID: <searchLink fieldCode="PM" term="%2211380883%22">11380883)</searchLink><br />J Evol Biol. 2021 Sep;34(9):1352-1361. (PMID: <searchLink fieldCode="PM" term="%2234165857%22">34165857)</searchLink><br />J Exp Biol. 2015 Dec;218(Pt 23):3825-35. (PMID: <searchLink fieldCode="PM" term="%2226632456%22">26632456)</searchLink><br />PLoS One. 2012;7(8):e41819. (PMID: <searchLink fieldCode="PM" term="%2222905109%22">22905109)</searchLink><br />Curr Biol. 2013 May 6;23(9):775-81. (PMID: <searchLink fieldCode="PM" term="%2223583548%22">23583548)</searchLink><br />PLoS Biol. 2010 Jun 29;8(6):e1000412. (PMID: <searchLink fieldCode="PM" term="%2220613859%22">20613859)</searchLink><br />J Chem Ecol. 2003 Mar;29(3):547-60. (PMID: <searchLink fieldCode="PM" term="%2212757318%22">12757318)</searchLink><br />Curr Biol. 2011 Feb 22;21(4):322-7. (PMID: <searchLink fieldCode="PM" term="%2221315594%22">21315594)</searchLink><br />Oecologia. 2021 Nov;197(3):615-631. (PMID: <searchLink fieldCode="PM" term="%2234716493%22">34716493)</searchLink>
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  Data: <i>Keywords: </i>Heterololigo bleekeri; Reproductive tactics; Spear squid; Territoriality
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