Scientia Marina <p><strong>Scientia Marina</strong> is a scientific journal published by <a title="Consejo Superior de Investigaciones Científicas" href="" target="_blank" rel="noopener">CSIC</a> and edited by the <a title="Institut de Ciències del Mar" href="" target="_blank" rel="noopener">Institut de Ciències del Mar</a> that publishes original papers, reviews and comments concerning research in the following fields:</p> <p>- Marine Biology and Ecology<br />- Fisheries and Fisheries Ecology<br />- Systematics, Faunistics and Marine Biogeography<br />- Physical Oceanography<br />- Chemical Oceanography<br />- Marine Geology.</p> <p>Emphasis is placed on articles of an interdisciplinary nature and of general interest.</p> <p>Founded in 1955 under the title of <em>Investigación Pesquera</em> adopts its current name in 1989. It began to be available online in 2007, in PDF format, maintaining printed edition until 2014. That year it became an electronic journal publishing in PDF, HTML and XML-JATS. Contents of previous issues are also available in PDF files.</p> <p><strong>Scientia Marina </strong> is indexed in <a title="WOS" href="" target="_blank" rel="noopener">Web of Science</a>: <a title="JCR" href="" target="_blank" rel="noopener">Journal Citation Reports</a> (JCR), <a title="SCI" href="" target="_blank" rel="noopener">Science Citation Index Expanded</a> (SCI), <a title="CC" href="" target="_blank" rel="noopener">Current Contents</a> - Agriculture, Biology &amp; Environmental Sciences, <a href="" target="_blank" rel="noopener">Zoological Record</a> and <a href="" target="_blank" rel="noopener">BIOSIS Previews</a>; <a title="SCOPUS" href="" target="_blank" rel="noopener">SCOPUS</a>, <a title="CWTSji" href="" target="_blank" rel="noopener">CWTS Leiden Ranking</a> (Journal indicators) Core publication, <a href="" target="_blank" rel="noopener">REDIB</a>, <a href="" target="_blank" rel="noopener">DOAJ</a> and other national and international databases. It is indexed in Latindex Catalogue 2.0 and has obtained the FECYT Seal of Quality.</p> <p><strong style="color: #800000;">Journal Impact Factor (JIF)</strong> 2021 (2 years): <strong>2.170</strong><br /><strong style="color: #800000;">Journal Impact Factor (JIF)</strong> 2021 (5 years): <strong>1.971</strong><br /><strong style="color: #800000;">Rank by JIF: </strong><strong>53</strong>/113 (Q2, Marine &amp; Freshwater Research)<br />Source: <a title="Clarivate Analytics" href="" target="_blank" rel="noopener">Clarivate Analytics</a>©, <a title="JCR" href="" target="_blank" rel="noopener">Journal Citation Reports</a>®</p> <p><strong style="color: #800000;">Journal Citation Indicator (JCI)</strong> 2021: <strong>0.53</strong><br /><strong style="color: #800000;">Rank by JCI: </strong><strong>64</strong>/121 (Q3, Marine &amp; Freshwater Research)<br />Source: <a title="Clarivate Analytics" href="" target="_blank" rel="noopener">Clarivate Analytics</a>©, <a title="JCR" href="" target="_blank" rel="noopener">Journal Citation Reports</a>®</p> <p><strong style="color: #800000;">Eigenfactor / Percentile </strong>2021: <strong>0.00095</strong><br /><strong style="color: #800000;">Article influence/ Percentile </strong>2021: <strong>0.416</strong><br /><strong style="color: #800000;">Eigenfactor Category:</strong> Ecology and Evolution<br />Source: University of Washington©, <a title="EigenFACTOR" href=";searchby=issn&amp;orderby=year" target="_blank" rel="noopener">EigenFACTOR</a>®</p> <table style="width: 100%; border-spacing: 0px; border-collapse: collapse; margin-top: 40px;"> <tbody> <tr> <td style="width: 33%; text-align: left; vertical-align: top;"> <p class="check">Open Access</p> <p class="check">No APC</p> <p class="check">Indexed</p> <p class="check">Original Content</p> </td> <td style="width: 33%; text-align: left; vertical-align: top;"> <p class="check">Peer Review</p> <p class="check">Ethical Code</p> <p class="check">Plagiarism Detection</p> <p class="check">Digital Identifiers</p> </td> <td style="width: 33%; text-align: left; vertical-align: top;"> <p class="check">Interoperability</p> <p class="check">Digital Preservation</p> <p class="check">Research Data Policy</p> <p class="check">PDF, HTML, XML-JATS</p> <p class="check">Online First</p> </td> </tr> </tbody> </table> Consejo Superior de Investigaciones Científicas en-US Scientia Marina 0214-8358 <strong>© CSIC.</strong> Manuscripts published in both the printed and online versions of this Journal are the property of <strong>Consejo Superior de Investigaciones Científicas</strong>, and quoting this source is a requirement for any partial or full reproduction.<br /><br />All contents of this electronic edition, except where otherwise noted, are distributed under a “<strong>Creative Commons Attribution 4.0 International</strong>” (CC BY 4.0) License. You may read here the <strong><a href="" target="_blank">basic information</a></strong> and the <strong><a href="" target="_blank">legal text</a></strong> of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.<br /><br />Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed. Miquel Alcaraz (1945-2022) F. Xavier Niell Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e043 e043 Age, growth and maturation in the mesopelagic squid Abralia andamanica (Cephalopoda: Enoploteuthidae) from the Arabian Sea <p>Age, growth and maturation in the mesopelagic squid&nbsp;<em>Abralia andamanica</em>&nbsp;(Cephalopoda: Enoploteuthidae) were studied in 140 individuals of 15-60 mm dorsal mantle length (DML) captured from open waters in the southeast Arabian Sea. The length-weight relationship was estimated as W=0.278 DML<sup>1.884</sup>&nbsp;(R<sup>2</sup>=0.93). Age estimates based on statolith increment counts ranged from 79 to 177 days, suggesting a short (&lt;200-day) lifespan. Growth in length was best described by a linear function for males and a power function for females. Growth in weight was best described by a power function for both sexes. Growth rates of the DML ranged from 0.16 to 0.30 (mean=0.24) mm/day in males and from 0.23 to 0.43 (mean=0.33) mm/day in females. The hatching season extended from June to August (monsoon season).</p> Kurichithara Kunjumani Sajikumar Geetha Sasikumar Vellathi Venkatesan Konnoth Jestin Joy Kolliyil Sunilkumar Mohamed Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e036 e036 10.3989/scimar.05251.036 Using fisher’s knowledge to estimate catch and effort in the large-scale octopus fishery on the eastern Campeche Bank (Mexico, NW Atlantic) <p>The Mayan octopus (<em>Octopus maya</em>) and the American octopus (<em>O. americanus</em>) are the two species that support the octopus fishery on the Campeche Bank. The large-scale fleet catches both species. However, landings are recorded as American octopus in the official statistics, and this causes a problem for the management of the fishery. The large-scale octopus fishery on the Campeche Bank was studied using a model based on data from interviews with skippers. A total of 180 valid interviews were conducted in the base ports of Progreso and Yucalpeten (Yucatan), representing 51.1% of the skippers in the fleet in 2019. This information was used for the first time to estimate catch per unit effort (CPUE) and total catches for each octopus species. The mean CPUE ranged between 50 and 500 kg day<sup>-1</sup>, with minimums of 10 kg day<sup>-1</sup>. The mean estimated potential catches ranged from 5069 to 3456 t per year for&nbsp;<em>O. maya</em>&nbsp;and from 4113 to 2805 t per year for&nbsp;<em>O. americanus.</em>&nbsp;The relationship between official landings and estimated catches showed a significant correlation (rxy=0.898). The total estimated catches were on average 20% lower than the official landings of&nbsp;<em>O. americanus</em>. The origin of this discrepancy is discussed.</p> Otilio Avendaño Iván Velázquez-Abunader Francisco Rocha Ángel Guerra Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e037 e037 10.3989/scimar.05254.037 Physical and chemical tagging methods for the sea urchin Paracentrotus lividus (Echinodermata: Echinoidea) <p>The sea urchin&nbsp;<em>Paracentrotus lividus</em>&nbsp;(Lamarck, 1816) (Echinodermata: Echinoidea) is an important economic resource in Europe, but intense harvesting has led to the collapse of several natural populations. Echinoculture, associated with restocking and stock enhancement practices, is an alternative to this problem. In these procedures, reliable individual identification through tagging is a valuable source of information. However, very few studies address the effect of tagging methods on&nbsp;<em>P. lividus</em>&nbsp;and the tagging of marine invertebrates still presents several challenges: decreased growth, high mortality rates and low tag retention rates. Under laboratory conditions, the present study evaluated the effectiveness of three tagging methods (passive integrated transponders [PIT-tags], coded wire tags [CWTs] and calcein) on wild&nbsp;<em>P. lividus</em>&nbsp;for 60 days in terms of total wet weight, total weight gain (mg ind.<sup>−1</sup>&nbsp;day<sup>−1</sup>), survival and tag retention. The final total wet weight was significantly higher in the untagged (control) group than in the PIT-tagged group. Survival rate was 100% for the PIT-tag, calcein and control groups, and 97% for the CWT group. Tag retention differed significantly according to the tagging method: 100% in the calcein group, 76.7% in the PIT-tag group and 38.0% in the CWT group.</p> Pedro M. Santos Bernardo Ruivo Quintella David Jacinto Ana Gomes Carolina Saldanha Sílvia Lourenço Patrícia Mega Lopes Maria João Correia David Mateus Teresa Cruz Ana Pombo José Lino Costa Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e038 e038 10.3989/scimar.05259.038 Decapod crustacean assemblages on trawlable grounds in the northern Alboran Sea and Gulf of Vera <p>This study analyses the samples collected annually (2012 to 2018) on circalittoral and bathyal soft bottoms (30 to 800 m) by the MEDITS surveys in the northern Alboran Sea (including Alboran Island) and the Gulf of Vera to determine the composition, structure and distribution of decapod crustacean assemblages. A total of 94 decapod crustacean species were identified. Non-metric multidimensional scaling showed depth to be the main factor for distinguishing four main decapod assemblages: the inner shelf (30-100 m depth), outer shelf (101-200 m), upper slope (201-500 m) and middle slope (501-800 m). PERMANOVA analyses revealed further significant depth-related differences between three established geographical sectors of the study area (northern Alboran Sea, Gulf of Vera and Alboran Island). Generalized additive model analyses were used to assess the bathymetrical, geographical and environmental effects on the ecological indices of each assemblage. Results showed that depth and the geographical effect were the main drivers in all cases. Decreases in abundance and increases in species richness, Shannon-Wiener diversity and Pielou’s evenness indices with depth were detected. This study shows the primacy of depth and geographical effect on the distribution of decapod species in the study area, in alignment with findings from other parts of the Mediterranean Sea.</p> Cristina Ciércoles Cristina García-Ruíz Pere Abelló Manuel Hidalgo Pedro Torres María González Ángel Mateo-Ramírez José Luis Rueda Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e039 e039 10.3989/scimar.05265.039 Modelling the spatial population structure and distribution of the queen conch, Aliger gigas, on the Pedro Bank, Jamaica <p>The estimation of reliable indices of abundance for sedentary stocks requires the incorporation of the underlying spatial population structure, including issues arising from the sampling design and zero inflation. We applied seven spatial interpolation techniques [ordinary kriging (OK), kriging with external drift (KED), a negative binomial generalized additive model (NBGAM), NBGAM plus OK (NBGAM+OK), a general additive mixed model (GAMM), GAMM plus OK (GAMM+OK) and a zero-inflated negative binomial model (ZINB) ] to three survey datasets to estimate biomass for the gastropod&nbsp;<em>Aliger gigas</em>&nbsp;on the Pedro Bank Jamaica. The models were evaluated using 10-fold cross-validation diagnostics criteria for choosing the best model. We also compared the best model estimations against two common design methods to assess the consequences of ignoring the spatial structure of the species distribution. GAMM and ZINB were overall the best models but were strongly affected by the sampling design, sample size, the coefficient of variation of the sample and the quality of the available covariates used to model the distribution (geographic location, depth and habitat). More reliable abundance indices can help to improve stock assessments and the development of spatial management using an ecosystem approach.</p> Ricardo A. Morris Alvaro Hernández-Flores Alfonso Cuevas-Jimenez Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e040 e040 10.3989/scimar.05269.040 The impact of inundation and sandstorms on the growth and survival of the mangrove Avicennia marina seedlings in the southern Red Sea <p>Mangroves occur in tropical and subtropical regions, including harsh arid areas. Little is known about how the environmental conditions of deserts influence the ecology of mangrove seedlings. The seedlings of the mangrove&nbsp;<em>Avicennia marina</em>&nbsp;were examined in situ in a natural stand of the southern Red Sea coast of Saudi Arabia to (1) estimate and compare the growth rate of&nbsp;<em>A. marina</em>&nbsp;between selected microhabitats with different tidal exposures, and (2) examine the influence of sandstorms on the growth and survival of the seedlings. Samplings were conducted in four zones established according to their tidal exposure: low tidal exposure (Z1), medium tidal exposure (Z2), high tidal exposure with numerous burrows (Z3), and high tidal exposure with a few or no burrows (Z4). Vertical growth and mortality of the seedlings and selected environmental variables were quantified. The results show that seedling growth rates differed significantly between the sampling zones, the highest growth being found in the high tidal regions (Z3 followed by Z4) and the lowest growth in Z1. Growth rate followed a significant decreasing pattern over time, coinciding with increasing air temperature and decreasing relative humidity. Sandstorms showed a marked increase in July, leading to massive dust deposition that caused extensive mortality of the seedlings by burial. Our study highlights that seedling growth can be affected by the extent of tidal inundation and that sandstorms act as a natural stressor.</p> Jeff Bogart R. Abrogueña Andrea Anton Sau Pinn Woo Miguel Baptista Carlos M. Duarte Syed Azher Hussain Mohammed Shoeb Mohammed Qurban Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e041 e041 10.3989/scimar.05277.041 Enhancing onboard post-catch vitality of discard Norway lobster (Nephrops norvegicus) for more sustainable Mediterranean trawl fishery <p>The current European Union fisheries policy encourages improving handling practices to increase the survival of discards. Trawling on the Mediterranean upper slope often generates over 30% of discards of the total catch. Among other species,&nbsp;<em>Nephrops norvegicus</em>&nbsp;juveniles are abundantly returned to the sea, sometimes exceeding 40% of discarded biomass.&nbsp;<em>N. norvegicus</em>&nbsp;discard survival probability has been recently shown to be related to vitality on board and to vary seasonally, being especially low during the summer (0.06). Environmental characteristics (especially, high on-deck temperature in summer) make it necessary to improve vitality on board in order to increase discard survival. We therefore tested new discard handling methodologies for a Mediterranean mixed trawl fishery, with&nbsp;<em>N. norvegicus</em>&nbsp;as the target species. The results showed a survival rate on board higher than 0.8 resulting from vitality status improvements achieved by immersing&nbsp;<em>N. norvegicus</em>&nbsp;in cooled seawater on board during the catch selection and discard time. The implementation of this method would make an important contribution to more sustainable Mediterranean trawl fisheries.</p> Alfredo García-de-Vinuesa Francesc Maynou Montserrat Demestre Copyright (c) 2022 Consejo Superior de Investigaciones Científicas (CSIC) 2022-09-21 2022-09-21 86 3 e042 e042 10.3989/scimar.05279.042