Academic Journal
First quantitative evidence of territorial behavior in squid near spawning substrates.
| Τίτλος: | First quantitative evidence of territorial behavior in squid near spawning substrates. |
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| 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. |
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| 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 |
| ISSN: | 2045-2322 |
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| DOI: | 10.1038/s41598-025-14308-1 |