Single paternity in the kelp crab Taliepus dentatus despite polyandry

Single paternity in the kelp crab Taliepus dentatus despite polyandry | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Single paternity in the kelp crab Taliepus dentatus despite polyandry Luis M Pardo, Karla Narvaez, Noemi Rojas-Hernandez, Oscar Chaparro, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5291445/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 27 May, 2025 Read the published version in Behavioral Ecology and Sociobiology → Version 1 posted 5 You are reading this latest preprint version Abstract The paternity patterns observed in decapods reflect the mating strategies and tactics employed by different species. However, these patterns may be altered by fishery management, particularly through male-biased harvesting, which affects the natural sex ratio and subsequently influences mating success and reproductive success. This study examined the reproductive strategies of the kelp crab Taliepus dentatus, revealing that, unlike other majid crabs, T. dentatus demonstrates a single paternity pattern, apparently unaffected by fishing pressures. Histological analyses supported the sperm economy hypothesis and revealed the seminal receptacle to be non-compartmentalised. Despite this, contrasting mating schemas in laboratory experiments discriminated the impacts of males and females in mating success, revealing that females were receptive approximately 50% of the time, but did not exhibit mate selection during the pre-copulatory period. Additionally, results showed that mating was mostly influenced by the presence of sperm competition, as males rarely mated or displayed guarding behaviour when other males were present. Finally, despite traits promoting multiple paternity, factors such as limited natural encounters, short copulatory durations and full seminal receptacles likely contributed to the observed genetic monogamy in T. dentatus. This species appears to depend on its year-round mating success and sperm storage capabilities to reduce the effects of male-biased fishing pressures. This research emphasises the need 1) to understand reproductive behaviours using multiple approaches (i.e. genetics, behaviour and histology) and 2) to perform contrasting mating experiments in sequential and simultaneous designs. Seminal receptacle Majidae Mating Genetic monogamy Full Text Supplementary Files Supplementarydocument.docx Cite Share Download PDF Status: Published Journal Publication published 27 May, 2025 Read the published version in Behavioral Ecology and Sociobiology → Version 1 posted Editorial decision: Major Revisions Needed 08 Jan, 2025 Reviewers agreed at journal 17 Dec, 2024 Reviewers invited by journal 15 Nov, 2024 Editor assigned by journal 21 Oct, 2024 First submitted to journal 18 Oct, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5291445","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":378650692,"identity":"7a5ad2b9-052f-4b43-9dac-f838b0a1aa58","order_by":0,"name":"Luis M 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