https://www.ajol.info/index.php/wiojms/issue/feedWestern Indian Ocean Journal of Marine Science2024-02-28T11:34:00+00:00Prof José Paulajppaula@fc.ul.ptOpen Journal Systems<p>The <em>Western Indian Ocean Journal of Marine Science </em>(WIOJMS) provides an avenue for the wide dissemination of high quality research generated in the Western Indian Ocean (WIO) region, in particular on the sustainable use of coastal and marine resources. The journal publishes original research articles dealing with all aspects of marine science and coastal management. Topics include, but are not limited to: theoretical studies, oceanography, marine biology and ecology, fisheries, recovery and restoration processes, legal and institutional frameworks, and interactions/relationships between humans and the coastal and marine environment. In addition, <em>Western Indian Ocean Journal of Marine Science </em>features state-of-the-art review articles and short communications. The journal will, from time to time, consist of special issues on major events or important thematic issues. Submitted articles are subjected to standard peer-review prior to publication.</p> <p>Journal abbreviation: WIO J. Mar. Sci.</p> <p>Other websites associated with this journal: <a href="https://www.wiomsa.org/publications-2/wio-journal-of-marine-science/">https://www.wiomsa.org/publications-2/wio-journal-of-marine-science/</a></p>https://www.ajol.info/index.php/wiojms/article/view/252714A first assessment of marine litter on a beach of an uninhabited island in the Mozambique Channel2023-10-02T15:19:59+00:00Sébastien Jaquemetsebastien.jaquemet@univ-reunion.fr<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Marine litter is ubiquitous and associated with both ecological and socio-economic consequences. Beaches are major sinks of marine litter and as such its assessment and monitoring are needed. An opportunistic marine litter survey was performed for 12 consecutive days on the island of Juan de Nova in the central Mozambique Channel in February 2007. Plastic dominated the marine beach litter with daily accumulation of plastic positively related to the tide height (R2 = 0.768, p<0.01). Annual deposits could reach an average of 1 t.km-1, suggesting that regular cleaning of the coastline should be conducted to limit the impact on the local wildlife of this protected area.</p> </div> </div> </div>2024-02-28T00:00:00+00:00Copyright (c) 2024 Western Indian Ocean Journal of Marine Sciencehttps://www.ajol.info/index.php/wiojms/article/view/244475Age, growth and mortality characteristics of the Thumbprint Emperor (Lethrinus harak) in Zanzibar2023-08-04T15:04:14+00:00Tumu Ali Mussamussa_tumu@yahoo.comSaleh A.S Yahyasaleh_y@yahoo.comJose J Castrojose.castro@ulpgc.esLeonard J Chaukaleonard.chauka@udsm.ac.tz<p>The growth parameters of <em>Lethrinus harak</em> were studied in Zanzibar water from 308 samples collected between June 2019 to May 2020 at Unguja Ukuu and Mkokotoni landing sites. The annulus count indicated that the majority of fishes captured were of three and four years old and very few were five, six, and seven years of age with a mean length of 17.69 cm, 21.04 cm, 24.18 cm, 25.86 cm, and 28.15, respectively. The number of rings was counted on the whole otolith and the growth rings were revealed to be formed annually, with the opaque margins generated from December to February and the hyaline ones during the rest of the year. The growth parameters were estimated as L<sub>∞</sub>=34.22cm, K=0.25 year-1, and t<sub>0</sub>=0.00. The total mortality (Z) was estimated as 0.68 year<sup>-1</sup> and natural mortality (M) was estimated using Pauly's equation, as 0.65 per year<sup>-1</sup> and fishing mortality (F) was 0.03 year<sup>-1</sup>, which gives an exploitation rate (E) of 0.04 year<sup>-1</sup>. Although these values indicate the species to be underexploited, the absence of older individuals 15 years and smaller below three years might have affected our findings.</p>2024-03-12T00:00:00+00:00Copyright (c) 2024 Western Indian Ocean Journal of Marine Science