Growth rate extremes of a Sciaenid in an ocean-warming hotspot

dc.contributor.authorJagger, Charmaine E.
dc.contributor.authorPotts, Warren M.
dc.contributor.authorPringle, Brett A.
dc.contributor.authorBordbar, M. Hadi
dc.contributor.authorHenriques, Romina
dc.contributor.authorMcKeown, Niall J.
dc.contributor.authorWilhelm, Margit R.
dc.date.accessioned2025-04-22T12:25:06Z
dc.date.available2025-04-22T12:25:06Z
dc.date.issued2025-05
dc.descriptionDATA AVAILABILITY : Data will be made available on request.en_US
dc.description.abstractArgyrosomus inodorus is a cool water Sciaenid, important to the recreational and commercial coastal fishery in Namibia, the northern Benguela. Given recent findings on the northern Benguela as an ocean-warming hotspot and A. inodorus being more sensitive to warm temperatures than its congeneric A. coronus, it is important to study long-term growth responses of this Sciaenid. We developed a 34-year otolith biochronology for A. inodorus. The linear mixed-effects models fitted to A. inodorus’ otolith biochronology indicated that the best linear unbiased predictor of growth was significantly positively correlated with mean sea surface temperatures (SSTs) in September of the year of formation and significantly negatively correlated with mean summer SSTs (November y-1), in the central Namibian area (20–24◦S, 12–14◦E). Thus, faster annual growth was observed during warmer winter/spring temperatures (up to 16℃) and slower growth was noted during warmer summer temperatures (> 16℃). These results indicate that the species has a narrow range of thermal plasticity, and highlight the recent reductions in growth of this species in response to rapid thermal change observed in the ocean warming hotspot. Our findings suggest that A. inodorus would not be able to adapt readily with future climate warming predicted to happen and already happening along the northernmost part of the Namibian coast.en_US
dc.description.departmentBiochemistry, Genetics and Microbiology (BGM)en_US
dc.description.librarianhj2025en_US
dc.description.sdgSDG-13:Climate actionen_US
dc.description.sdgSDG-14:Life below wateren_US
dc.description.sponsorshiphe Ministry of Fisheries and Marine Resources, Namibia; the Department of Fisheries and Ocean Sciences of the University of Namibia, Henties Bay, Namibia; the Department of Ichthyology and Fisheries Sciences, Rhodes University, Grahamstown, South Africa; Wild Skeleton Coast Adventure Tours (Hein Truter and Jimmy Marais); Namibia Seafood Industries Sashimi (Pty) Ltd. (Corrie Cornelissen); the Office of the Governor Erongo Region, Namibia and the Namibia Student Financial Assistance Fund (NSFAF).en_US
dc.description.urihttps://www.elsevier.com/locate/fishresen_US
dc.identifier.citationJagger, C.E., Potts, W.M., Pringle, B.A. et al. 2025, 'Growth rate extremes of a Sciaenid in an ocean-warming hotspot', Fisheries Research, vol. 285, art. 107366, pp. 1-11, doi : 10.1016/j.fishres.2025.107366.en_US
dc.identifier.issn0165-7836 (print)
dc.identifier.issn1872-6763 (online)
dc.identifier.other10.1016/j.fishres.2025.107366
dc.identifier.urihttp://hdl.handle.net/2263/102178
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2025 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologiesublication in Fisheries Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Fisheries Research, vol. 285, art. 107366, pp. 1-11, 2025, doi : 10.1016/j.fishres.2025.107366.en_US
dc.subjectBenguelaen_US
dc.subjectBiochronologyen_US
dc.subjectOtolithsen_US
dc.subjectOcean warmingen_US
dc.subjectTolerance rangeen_US
dc.subjectArgyrosomus inodorusen_US
dc.subjectSDG-14: Life below wateren_US
dc.subjectSDG-13: Climate actionen_US
dc.titleGrowth rate extremes of a Sciaenid in an ocean-warming hotspoten_US
dc.typePreprint Articleen_US

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