https://scm.niscair.res.in/index.php/IJMS/issue/feed Indian Journal of Geo-Marine Sciences (IJMS) 2024-10-09T10:16:20+0530 Dr. Dinesh Velip ijms@niscpr.res.in Open Journal Systems <p style="text-align: justify;">Started in 1972, this (Indian Journal of Geo-Marine Sciences: IJMS; Indian J Geo-Mar Sci) multidisciplinary, peer-reviewed, open access, monthly periodical with <a href="https://portal.issn.org/resource/ISSN/2582-6727" target="_blank" rel="noopener">e-ISSN: 2582-6727</a> is devoted to the publication of communications relating to various facets of research in Marine sciences. The articles should contribute significantly to Physical oceanography, including hydrodynamics, climate change, satellite oceanography, etc.; Chemical oceanography, including biogeochemical cycles, marine pollution, etc.; Biological oceanography, including aquatic biology, ecology, fisheries, biodiversity &amp; systematics, etc.; Geological oceanography, including geochemistry, micropalaeontology, marine archaeology, marine geotechnics, etc.; Marine instrumentation/engineering, naval architecture, etc. For more details on subject areas, please visit here. Therefore, original research, review articles and book reviews of general significance to marine sciences, excluding core geosciences, which are written clearly and well organized according to the IJMS manuscript preparation and submission guidelines will be given preference. Authors are required to read the ‘Instruction to Authors’ guidelines thoroughly before preparing the manuscript.</p> <p style="text-align: justify;"><strong><span class="style1"><span style="font-family: Verdana;">Impact Factor of IJMS is 0.5 (JCR 2022).</span></span></strong></p> <p><a href="http://nopr.niscpr.res.in/jinfo/ijms/ijms_inst_auth.pdf" target="_blank" rel="noopener"><em><strong><span class="style1"><span style="font-family: Verdana;">Instructions To Authors</span></span></strong></em></a></p> https://scm.niscair.res.in/index.php/IJMS/article/view/7473 Report on commensal shrimp Ensiger custos (Forskål, 1775) (Caridea: Palaemonidae) associated with bivalve Pinna bicolor Gmelin, 1791 in Palk Bay, India 2024-03-26T11:07:23+0530 S Prakash prakash.cccs@sathyabama.ac.in Amit Kumar amit.kumar.szn@gmail.com <p>For the first time, a <em>Pinna</em> shell associated shrimp <em>Ensiger custos</em> was documented from the shallow seagrass beds of Palk Bay, India. The shrimp specimen was identified based on the morphological characteristics such as chela of the first pereiopod cannulate, absence of distal teeth on the rostrum, antennal spine minute and dactylus of the second pereiopod with single large triangular tooth in the proximal half. The <em>E. custos </em>was found to be closely related to <em>E. custoides</em>. In the present study, <em>E. custos</em> shrimp was found associated with <em>Pinna bicolor </em>Gmelin 1971.</p> 2024-10-09T00:00:00+0530 Copyright (c) 2024 Indian Journal of Geo-Marine Sciences (IJMS) https://scm.niscair.res.in/index.php/IJMS/article/view/6921 Additional records of the deep-sea scissor-foot shrimp Psalidopus huxleyi Wood-Mason & Alcock, 1892 (Decapoda: Caridea: Psalidopodidae) from the Arabian and Andaman Seas, India 2024-05-02T14:57:17+0530 Kuberan G gkuber006@gmail.com V P Padate vinaypadate@gmail.com Sendhil Kumar R sendhil.r@cmlre.gov.in S S Cubelio sherine@cmlre.gov.in <p>In this paper, a taxonomic account of the rare deep-sea caridean shrimp <em>Psalidopus huxleyi</em> Wood-Mason &amp; Alcock, 1892 is provided based on four specimens collected during exploratory cruises onboard the “Fishery Oceanographic Research Vessel Sagar Sampada” in the Andaman Sea (635 meters depth) and the Southeastern Arabian Sea (957 m). This species has often been recorded from the Western Pacific Ocean, but this study represents the rediscovery of the species from localities close to the type localities since its original description.</p> 2024-10-09T00:00:00+0530 Copyright (c) 2024 Indian Journal of Geo-Marine Sciences (IJMS) https://scm.niscair.res.in/index.php/IJMS/article/view/14106 Evaluation of the status of marine fishery resources of Tamil Nadu, India using surplus production models 2024-10-01T17:27:01+0530 R Abinaya xyz@niscpr.res.in M K Sajeevan xyz@niscpr.res.in <p>The present study used surplus production models for the assessment of fisheries stock and to evaluate the marine fishery status of Tamil Nadu. Present study computed and analysed annual catch and effort between 1998 and 2018 using Catch Effort Data Analysis (CEDA) software. The mean annual catch of Tamil Nadu marine fisheries was 4.14 lakh tonnes, ranging from 2.87 lakh tonnes (2005) to 5.20 lakh tonnes (2018). The Biological Reference Points (BRP), such as Maximum Sustainable Yield (MSY), Biomass at MSY (B<sub>MSY</sub>), and Fishing mortality at MSY (F<sub>MSY</sub>), were estimated using three error assumptions (Normal, Log Normal and Gamma) of Fox, Schaefer, and Pella-Tomlinson production models for Initial Proportion (IP) ranging from 0.1 to 1. From the results, MSY, B<sub>MSY</sub> and F<sub>MSY</sub> estimated by the best fit Schaefer-Log Normal (IP value of 0.8) were 5.32 lakh tonnes, 35.3 million tonnes and 0.151, respectively. The BRP determined from the Schaefer and Pella-Tomlinson models was similar. The predicted MSY values were higher than the most recent catch (5.20 lakh tonnes) of 2018. According to the reference point results, the stocks are secure; however, it is advised to keep fishing at present level in order to preserve the stock at a nearly optimal fishing pressure.</p> 2024-10-09T00:00:00+0530 Copyright (c) 2024 Indian Journal of Geo-Marine Sciences (IJMS) https://scm.niscair.res.in/index.php/IJMS/article/view/14108 Molecular marker (RAPD and RFLP) analysis of Mullet species 2024-10-01T17:33:04+0530 I Vidhya abc@niscpr.res.in N Felix abc@niscpr.res.in A Kathirvelpandian abc@niscpr.res.in E Suresh abc@niscpr.res.in <p>Mullet species belongs to the family, Mugilidae. Traditional taxonomic characters failed to differentiate mullet species due to the possibility of cryptic species and morphological similarity among mullet species. This study aimed to differentiate the selected mullet species using molecular markers. A total of 95 mullet samples (<em>M. cephalus</em>, <em>P. macrolepis</em>, and <em>P. tade</em>) were collected from Tamil Nadu and Kerala. For this study, 5 RAPD primers (OPA1, OPA10, OPA11, OPA15, and OPA16) were chosen from a set of 30 universal primers. The Nei’s unbiased genetic distance was calculated with the help of the software “POPGEN version 1.32”. The genetic distance between <em>P. tade</em> and <em>P. macrolepis</em> was lower, while the distance between <em>M. cephalus</em> and <em>P. tade</em> was greater, measuring 43.37 %. For the PCR-RFLP marker, the restriction enzyme was chosen based on <em>in-silico</em> analysis. The Alu I enzyme displayed species-specific patterns in <em>M. cephalus</em> at 190 bp, 200 bp, and 210 bp for the 16S rRNA gene.</p> 2024-10-09T00:00:00+0530 Copyright (c) 2024 Indian Journal of Geo-Marine Sciences (IJMS) https://scm.niscair.res.in/index.php/IJMS/article/view/14107 New records of soft corals (Cnidaria: Octocorallia) at Digha and adjacent areas, West Bengal, India 2024-10-01T17:30:51+0530 J S Yogesh Kumar abc@niscpr.res.in <p>A comprehensive and thorough research study was undertaken in Digha and the neighbouring coastline of West Bengal to investigate the benthic communities in the area. The survey identified a total of 16 species, including 12 previously unrecorded soft coral species at the study sites. As a result of this investigation and considering the existing data, the total number of octocoral species in the region has been revised to 20 species. This research contribution, specifically documented the new record of 12 soft coral species, <em>i.e.</em>, <em>Dendronephthya ganjamensis</em> Henderson, 1909; <em>Carijoa riisei</em> (Duchassaing &amp; Michelotti, 1860; <em>Muricella ramosa</em> Thomson &amp; Henderson, 1905; <em>Acanthogorgia muricata</em> Verrill, 1883; <em>Menella </em>sp.; <em>Subergorgia suberosa</em> (Pallas, 1766); <em>Acanella robusta</em> Thomson &amp; Henderson, 1906; <em>Junceella juncea</em> (Pallas, 1766); <em>Verrucella umbracula</em> (Ellis &amp; Solander, 1786); <em>Lituaria hicksoni</em> Thomson &amp; Simpson, 1909; <em>Pteroeides punctatum</em> Thomson &amp; Simpson, 1909; and <em>Pennatula indica</em> Thomson &amp; Henderson, 1906 within the study area.</p> 2024-10-09T00:00:00+0530 Copyright (c) 2024 Indian Journal of Geo-Marine Sciences (IJMS)