Age‐Based Population Dynamics of the Shoemaker Spinefoot Rabbitfish (Siganus sutor) From The Seychelles
Date
Authors
Sabetian, Armagan
Owen, Charlie
Pope, Ieuan
Haines, Leah
Das, Ayon
Lilkendey, Julian
Trip, Elizabeth DL
Zhang, Jingjing
Govinden, Rodney
Visconti, Valerio
Supervisor
Item type
Journal Article
Degree name
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
Spawning aggregations, schooling behaviour and twice-yearly recruitment make the shoemaker spinefoot rabbitfish (Siganus sutor) a major artisanal and subsistence fishery species in the Western Indian Ocean. However, published estimates of its maximum age and growth parameters vary considerably. In this study, we estimate the longevity of S. sutor at 4 years and an asymptotic length of 287.29 mm FL. When analysed by sex, males exhibited a larger L∞ (292.53 mm FL) than females (284.52 mm FL), yet likelihood-ratio tests and confidence ellipses formulated around L∞ and K values indicated no significant sex-based differences in growth profiles. Consistent with previous studies, S. sutor is short-lived, grows rapidly and experiences high mortality yet remains resilient to fishing pressure. However, given its importance to coastal fisheries throughout the Indian Ocean, we recommend a comprehensive, spatially comparative assessment of S. sutor life-history traits and population dynamics across its geographic range. This is necessary to determine whether inconsistencies in age and growth reported in the literature are due to the presence of a species complex with differing growth rates, mortality, behaviour or vulnerability to fishing.Description
Keywords
0608 Zoology, 0699 Other Biological Sciences, Fisheries, 3005 Fisheries sciences, 3109 Zoology, coral reef fishery, otolith, rabbitfish, Seychelles, Siganus sutor
Source
Journal of Applied Ichthyology, ISSN: 0175-8659 (Print); 1439-0426 (Online), Wiley, 2026(1). doi: 10.1155/jai/1279494
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Copyright © 2026 Armagan Sabetian et al. Journal of Applied Ichthyology published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.