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Phenotypic characterisation and strain differentiation of Vibrio alginolyticus isolates from Muttukadu brackishwater lagoon Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 P E Praveena, T Thenmozhi, J J S Rajan, T Bhuvaneswari, S K Otta, K P Jithendran
Vibrio alginolyticus has been described as a pathogenic species that can cause vibriosis in shrimp and many marine fishes. A total of nine V. alginolyticus isolates were segregated from 25 water samples collected from various locations at Muttukadu brackishwater lagoon in Tamil Nadu, India. The isolates were separated and characterised phenotypically and genotypically and tested for antibiotic resistance
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Characterization and biomedical application of Tetradecamethylcycloheptasiloxane, a silicone-type biosurfactant produced by Streptomyces castaneoglobisporus AJ9 isolated from solar salt works Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 M B S Donio, R Remya, M Michaelbabu, G Uma, T Citarasu
Tetradecamethylcycloheptasiloxane (C14H42O7Si7), a biosurfactant, was extracted by acid precipitation method from the haloalkaliphilic actinomycetes, Streptomyces castaneoglobisporus AJ9 (Gene Bank KC603900.1) and characterized by GC-MS analysis. The purified biosurfactant could effectively degrade dyes such as orange MR, direct violet, cotton red, reactive yellow and nitro green. Antimicrobial screening
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Evaluation of biochemical and antioxidant properties of crude extracts from the Indian cattle leech Poecilobdella granulosa Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 D Padmanaban, R G Muthusamy, G J Sahayanathan, K Raja, A Chinnasamy
Oxidative stress is one of the factors influencing the structure and function of cells, tissues, and their components. Natural antioxidants have emerged as prophylactic and therapeutic agents for diseases like cancer and cardiovascular disease. The objective of the current study is to assess the biochemical composition and antioxidant potential of crude extracts from various organs of the Indian cattle
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Observations on the mortality of olive ridley sea turtles (Lepidochelys olivacea) and associated factors along Ganjam coast, east coast of India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 S P Pattnayak, B A K Prusty
The Odisha coast along the east coast of India is home to three mass nesting sites (Gahirmatha, Devi and Rushikulya) and several sporadic nesting sites for olive ridley sea turtles. The coastline in the Ganjam district of Odisha has more than nine beaches that report olive ridleys (Lepidochelys olivacea) nesting, including one mass nesting site i.e the Rushikulya estuary. To develop a better understanding
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Very severe cyclonic storm “Gaja” and its impact off the Tamil Nadu coastline Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 S S Salim, Monolisha S
This paper presents an overview of the Gaja – a very severe cyclonic storm that battered thousands of lives in Cauvery delta regions of Tamil Nadu. The cyclone originated from the Gulf of Thailand on 5th November 2018 and gradually turned into a very severe cyclonic storm that made a landfall at Tamil Nadu coast on 15th November 2018. Nagapattinam was one of the most affected coastal districts, which
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Transportation of microplastic during high-flow and low-flow seasons in southeastern Black Sea: A modelling approach Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 D Yazir, Y Terzi, C Erüz
Predicting the transportation patterns of microplastic particles is crucial for assessing the environmental risks. The present work studied the transportation and accumulation of floating microplastic particles released from the largest river basin (Değirmendere), on the southeastern Black Sea coast. A total of 2 scenarios were simulated for high-flow and low-flow seasons to predict the effect of freshwater
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Acropora teres (Verrill, 1866): in the verge of regional vulnerability from Andaman and Nicobar Islands, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 T Mondal, C Raghunathan, K Chandra
India is endowed with exceptionally enriched coastal and marine biodiversity in its peninsular coastal regions, island ecosystems as well as EEZ zones along with four major reef areas and other patchy reef areas. Being one of the major reef areas of India, Andaman and Nicobar Islands are considered the prime treasure-trove marine biodiversity with mostly fringing type reefs and one barrier reef. Comprehensive
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Occurrence of the feather star associated symbiotic brachyuran crab- Permanotus purpureus (Gordon, 1934) from the Andaman Sea, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 N K Nigam, C Sivaperuman, K K Bineesh
The present paper reports the first occurrence of Permanotus purpureus (Gordon, 1934), a crinoid associated symbiotic brachyuran crab from Andaman Sea. In the Indo-Pacific region, this species is very widespread. The Andaman Islands coral reef habitats were the source of five specimens that were procured during the surveys through scuba diving. We have also documented this species is association with
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Occurrence of an interesting Sweeper fish (Family: Pempheridae) from northern part of east coast of India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-11-24 D Ray, S R Mohanty, Anil Mohapatra
Six vibrant coloured Sweeper fish or pempherid, Pempheris malabarica were collected from Digha Mohana of West Bengal and Chandipur fish landing centre of Odisha coast. For the first time this paper reports the family Pempheridae from West Bengal coast and occurrence of species P. malabarica in Odisha coast. This paper describes morphometric and also meristic counts of the species from the region for
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Population dynamics of Meretrix casta (Gmelin, 1791) along Thoothukudi, Gulf of Mannar, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 S Takar, P Jawahar, U R Gurjar, S D Kingston, N Neethiselvan, J J Pereira, I Jagadis
The present study was performed to understand the population dynamics and current status of Meretrix casta stock along the southern coast of Tamil Nadu, India. The estimated value for asymptotic length, growth coefficient and growth performance index was 5.41 cm, 0.77 year-1 and 1.35, respectively. The value of t0 was recorded to be -0.07529 years. The instantaneous rate of total mortality (Z), fishing
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Environmental status of some beaches in Daman and South Gujarat, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 S Lonkar, U K Pradhan, A Ram, P B Udayakrishnan, A Fulke, A Gaud, L Kumbhar
Beaches are the prime choice of amusement, hence determining its quality is significant to public health. The existing status of water and sediment quality of four beaches along the north-west coast of India is evaluated at high and low tide (for three weeks) during the pre-monsoon season. Water samples were measured for hydrography, nutrients, Petroleum Hydrocarbons (PHc) and Fecal Coliform (FC).
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Quantification of morphological variability among species of family Cynoglossidae from Indian waters Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 S K Sharmaa, S S Mishra, A K Jaiswar
The morphometric and meristic studies of flatfishes belonging to the family Cynoglossidae collected from various parts of the Indian coast were studied. Fourteen species of Cynoglossids belonging to two genera, Cynoglossus and Paraplagusia, were obtained from commercial landings of fishing trawlers in coastal waters from August 2013 to May 2014. A distance matrix was created using the Euclidian method
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A unique occurrence of large-sized diamondback squid Thysanoteuthis rhombus (Troschel, 1857) in the Gulf of Mannar Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 M Rajkumar, M Midun, S Thirumalaiselvan, R Rajkumar, R Saravanan
The presence of the large-sized diamondback squid Thysanoteuthis rhombus (Troschel, 1857) in the Gulf of Mannar biosphere was confirmed after a two-decade absence, based on a single specimen observed during landings at the Pamban lighthouse Fish Landing Centre. A squid measuring 633 mm in mantle length and weighing 15.1 kg was caught in the hook and line at a depth of 20 m. The discovery of this species
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Trematode parasites in fishes from Chilika: Three new records to India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 A Ghosh, A N Rizvi
The study reports three species of parasitic trematodes viz. Lecithochirium genypteri Manter, 1954, Opegaster plotosi Yamaguti, 1940 and Saccocoelioides octavus Szidat, 1970 which were collected from the fishes Polydactylus sextarius (Bloch & Schneider, 1801), Glossogobius giuris Hamilton, 1822 and Liza parsia (Hamilton, 1822), respectively from the Chilika lake. All the three reported species form
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Effect of different recycled fisheries and domestic waste compost on the production of Spirulina platensis Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 P Gangeswari, M Venkatasamy, A Srinivasan, M Rajkumar
Solid wastes of finfish and shellfish could be converted into bio-manure through composting process and it can be used for protein (Spirulina) production through aquaculture and bioremediation. The study is aimed for Spirulina production from different recycled fisheries and domestic wastes under homestead condition. The different wastes were collected from different sources and were converted into
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Retrieving climate change dependent Sea Surface Temperature (SST) in Southern Turkey by using Landsat thermal imagery Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 S M Kaymaz Muhling, M Yabanli
Sea Surface Temperature (SST) is one of the most significant parameters in oceanography. SST data can be used to analyse the ocean and marine environments. SST is required to study Marine Protected Areas (MPAs), identification of invasive species spreading areas, climate change, sea-level rise and pollution predictions. For more than 30 years, satellites have provided images that can assist in understanding
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Molecular detection and genetic diversity of virulent Aeromonas hydrophila (Chester, 1901) Stanier, 1943 isolates from raw and processed fish Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 M Shaikh, Anjay, P Kaushik, A Kumar, R Kumar, Sanjana
Aeromonas hydrophila is a mesophilic motile aeromonad present ubiquitously and causes a high number of fish mortalities particularly in India along with various intestinal and extraintestinal diseases in humans. In this study, a total of 88 samples of fish and their processed products were screened by PCR targeting species-specific 16S rRNA gene, and the virulent genes such as aerA, hly and ahh1. The
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Status and importance of research on marine sponges in India with special reference to sponges on coral reefs Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-09-29 J S Emmett, K D Raj
Marine sponges are integral parts of the marine environment and play key ecological roles, especially in coral reef ecosystems. Though research on marine sponges started in the 1800s, most of the works to date have focussed their attention on taxonomy and marine natural products from sponges in India. The lack of ecological studies on sponges is attributed to the requirement of scuba diving skills
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New record of blunthead pufferfish, Sphoeroides pachygaster (Muller & Troschel, 1848) (Tetraodontiformes: Tetraodontidae) from Indian water along with DNA barcode and some biological aspects Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 S Ramachandran, T T Ajith Kumar, P Purushothaman, K K Lal, S P Varghese, N Unnikrishnan, A E Ayoob, L Ramalingam
Blunthead pufferfish, Sphoeroides pachygaster (Muller and Troschel 1848) was recorded for the first time in Indian seas. A single female specimen of S. pachygaster was caught in bottom trawl operation at 263 – 310 m depth of the Eastern Arabian Sea. Morphometric and meristic description are presented in detail and compared with the pertinent records available elsewhere. The specimen collected was fully
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Prediction of wave reflection for quarter circle breakwaters using soft computing techniques Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 N Ramesh, S Bhaskaran, Subba Rao
The modified form of the semi-circular breakwater is called Quarter-Circle Breakwater (QBW). It consists of a quartercircular surface facing incident waves, a horizontal bottom, a rear wall, and is built on a rubble mound foundation. In general, QCB may be constructed as emerged, with and without perforations that may be on one side or either side based on the coastal designer. These perforations dissipate
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Length-weight relationships for five fish species from Gulf of Mannar, southeast coast of India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 M K Das, R Rajendar, C Surendar, P Padmanaban
The study documents length-weight relationships (LWRs) of five fish species viz. Chaetodon collare Bloch, 1787, Chaetodon octofasciatus Bloch, 1787, Pempheris mangula Cuvier, 1829, Pseudotriacanthus strigilifer (Cantor, 1849), and Rogadius asper (Cuvier, 1829) sampled from Gulf of Mannar, southeast coast of India. The fishes have been collected from bycatches of commercial trawlers from two landing
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Range extension of a Conger eel, Bathymyrus simus Smith, 1965 (Anguilliformes: Congridae) in the Arabian Sea, Western Indian Ocean Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 P Kodeeswaran, J Anand, T T Ajith Kumar, K K Lal
Bathymyrus simus Smith, 1965, a thorny-snout conger eel, which was poorly known with few specimens and distributed in Western Pacific Ocean (Vietnam and South China Sea) and Bay of Bengal. The present study deals with a range extension of 3,500 km based on an odd male specimen collected from the Arabian Sea, Western Indian Ocean. The study also provides detailed taxonomic description with insights
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First record of two Cardinalfishes (Perciformes: Apogonidae) from West Bengal, along the North-East coast of India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 A Pradhan, B K Mahapatra, S S Mishra
Two cardinal fishes of the family Apogonidae were collected from Digha coast, West Bengal, Northeastern part of Bay of Bengal. These fishes were captured as trawl net from about 30 km off the coast. The specimens were identified as Jaydia queketti (Gilchrist, 1903) and Ostorhinchus fasciatus (White, 1790). Both the species are herein reported for the first time from the northeast coast of India (West
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High occurrence of Jellyfish (Catostylus perezi, Ranson 1945) in proximity to industrial development, Gulf of Kutch/ Kachchh, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 D P Behera, G Thirumaran, B K Sahu, R R Das
Here, the mass occurrence of Jellyfish, Catostylus perezi, Ranson 1945 is reported from the coastal waters of Gulf of Kutch/ Kachchh, Gujarat, India. Although high productivity is a possible reason the presence of man-made infrastructures like thermal power plants and ports are further highlighted. A further assessment of the effects of these structures on marine life is suggested in this article.
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Length–weight relationship and size at maturity of the Picnic seabream, Acanthopagrus berda (Forsskål, 1775) Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 M T Shilta, N K Chadha, P P Suresh Babu, P K Asokan, K Vinod, I Joseph, P B Sawant, R Abhijith
Length-weight relationship of Acanthopagrus berda was investigated from 720 specimens collected from Korapuzha estuary, Calicut, India. Length-weight relationship for male, female, transitional, undifferentiated and total sample population of A. berda were determined as W = 0.3994L2.536, W = 0.1694L3.0584, W = 0.14778L3.1044, W = 0.12015L3.285 and W = 0.16515L3.037, respectively. The overall mean b
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Spatiotemporal variations in the population dynamics of a few prominent brittle star species (Echinodermata: Ophiuroidea) from the intertidal flat of the Veraval coast, Gujarat, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 H I Baroliya, R S Kundu
The present communication reports the spatiotemporal variation in the population dynamics of three prominent Ophiuroidea species: Amphipholis squamata, Ophiactis savignyi and Ophiocomella sexradia at the rocky intertidal zone at Veraval (21°35’ N, 69°36’ E) Gujarat, off the Arabian Sea. The two sampling areas with different substratum and community structures were investigated from April 2019 to March
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Screening and molecular identification of marine sponges with cytotoxic activities, collected from Gulf of Mannar, Indian Ocean Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 T S Merlin, M Umar, M Dhaneesha, V Joseph, T P Sajeevan
The marine environment, a rich source of biological and chemical diversity, offers tremendous scope for discovering novel metabolites with pharmacological activities. Marine invertebrates, especially sponges, have gained more attention in drug discovery programmes since they exhibit unique metabolic and physiological capabilities and an extraordinarily symbiotic association with diverse bacterial communities
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Variation of biogenic sulphur compounds in the estuarine and coastal waters of Goa, West coast of India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-31 S G Borker, D M Shenoy, K F Bepari, S Kurian, H Uskaikar
Dimethylsulphide (DMS) originates predominantly from dimethylsulphoniopropionate (DMSP), a metabolite produced by phytoplankton. Through its contribution to the production of new aerosols and cloud condensation nuclei, a high concentration of DMS has the potential to influence the radiation budget of the earth. Estuaries and coastal regions being dynamic may produce significantly high concentrations
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A biochemical study on the growth traits of Vigna radiata (Green gram) influenced by Gunapaselam (Fermented Fish waste) - An approach to marine waste management Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 B Thendral Hepsibha, A Geetha
Effective methods are necessary to utilize the discarded waste from the fishery industry. The sustainable agriculture emphasizes the importance of recycling organic wastes to minimize the damages caused by mineral fertilizers and the sky-rocketing price of chemical fertilizers. A study was conducted to assess the fertilizing potential of fermented fish waste - Gunapaselam (GP) on the growth traits
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Valorization of discarded industrial processing wastes of Siboga squid (Doryteuthiis sibogae) for the extraction and physico-chemical characterization of gelatin Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 S R Radhika Rajasree, L Aranganathan, M Gopalakrishnan
A growing concern on the accumulation and disposal of fish processing discards and environmental degradation induces a profound attraction on the development of valuable byproducts for human purposes. Gelatin was isolated from Siboga squid (Doryteuthiis sibogae) skin through cold maturation process and its physico-chemical as well as structural properties viz. Water Holding Capacity (WHC), emulsifying
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Batch kinetic studies of adsorption of Cu(II) ions from aqueous solutions onto alginate nanoparticles/PEG binary blend Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 M Saranya, T Gomathi, S Pavithra, A Mubashirunnisa, P N Sudha
Among the most prevalent natural biopolymers is alginate. The current effort focuses on creating the binary blend of Alg-Nps/PEG. PEG is a great option because of its many distinctive qualities. Blends of polymers mix the characteristics of the separate polymers. FTIR results show intermolecular hydrogen bonding between Alg-Nps/PEG binary blend. Morphological and cross-sectional studies were analyzed
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Synthesis, characterization, biological and catalytic activity of carboxymethyl chitosan schiff base metal complexes Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 R Suresh, M Deepa, P N Sudha, T Gomathi, S Pavithra, P Moganavally
The Schiff base of carboxymethyl chitosan/p-dimethylaminobenzaldehyde (CMC-SB), as well as its complexes with cobalt (CMC-SB-Co), nickel (CMC-SB-Ni), and zinc (CMC-SB-Zn), were synthesised and studied using FTIR, XRD, TGA, DSC, and SEM. Schiff base metal complex production has been verified by the FTIR and XRD data. According to the thermal studies, the CMC-SB Zinc combination has better thermal stability
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Adsorption of chromium from aqueous solution using Chitosan-g-Graphene/Hydroxyapatite composite Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 V Geetha, S Latha, T Gomathi, S Pavithra, P N Sudha
The preparation and characterisation of a polymeric composite incorporating graphene, hydroxyapatite, and chitosan as an adsorbent to remove chromium (VI) from wastewater. The FTIR and XRD studies supported the composite's production. Analysis of surface morphology and heat stability involved TGA and SEM studies. A batch adsorption was run to determine the efficacy of the adsorbent by varying contact
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Sorption studies on the removal of copper onto biopolymer derivative: chitosan-g-maliec anhydride-g-ethylene dimethacrylate Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 M R Gopal Reddi, T Gomathi, S Pavithra, J Annie Kamala Florence, P N Sudha, R Suresh
The current work suggests employing an unique Chitosan-g-Maleic anhydride-g-ethylene dimethacrylate copolymer to remove the harmful heavy element copper. By adjusting variables like the concentration of the monomer, the concentration of the initiator, and the temperature during the chain polymerization reaction, the graft copolymer was developed. The copolymer obtained at the optimum condition was
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Sorption studies of divalent ions onto ternary beads of alginate, chitosan and carboxymethyl cellulose Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 B Mahalakshmi Devi, T Gomathi, K Vijayalakshmi, R Ramya, S Pavithra, P N Sudha
The potential of sodium alginate (AL)/ chitosan (CS)/ carboxymethyl cellulose (CMC) beads as an adsorbent for removing the divalent metal ions such as Cu (II) and Ni (II) ions from aqueous solution was assessed in the current work using a batch adsorption technique. FT-IR and XRD measurements were used to investigate the formation of the ternary beads. The percentage removal of metal ions was investigated
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Production of marine algae methyl esters and evaluation of its engine performance and emission characteristics Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 J Jayaprabakar, A Karthikeyan, A Prabhu, M Anisha, Nivin Joy
A number of critical factors influence the competitiveness of any biodiesel, including feedstock availability, production costs, byproducts produced, and government subsidies. In this situation, a cost-effective and environmentally acceptable supply of biodiesel is required. When compared to other non-edible oil sources, algal oil is a significant emerging non-edible biodiesel source. The current study
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Production of biodiesel from marine green seaweed using a renewable low-cost heterogeneous catalyst Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 H Kumar, A Annam Renita, A Anderson
In this study, the biodiesel produced from Ulva lactuca, a marine green seaweed by solid oxide catalyst derived from low-cost waste eggshells is evaluated. Waste eggshells were calcined at 500 °C, 600 °C and 700 °C to increase catalytic activity which was characterized by X-ray diffraction pattern. The peaks of CaO were obtained by calcinations carried out at 700 °C for varied time periods. Comparison
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Antibacterial activity of the released metabolites of sea anemone Stichodactyla gigantea (Forskal, 1775) from the coast of South Andaman, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 N S Heera, J K Mishra, S Sneha, M C Shehin Sadaka
Marine sessile organisms produce unique bioactive metabolites, which render a defensive barrier against microbial threats and increase survivability in the middle of predators. The earlier studies focused on isolated metabolites from marine sources, composed to exhibit antibacterial, antiviral, and cytotoxic properties. The present study aims to evaluate the antibacterial property of the anemone-released
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Extraction and correlation of total phenolic and flavonoid contents in seaweeds collected from Rameshwaram during pre- and post- monsoon period using different solvent systems with their antioxidant activity Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 K M Smita, L Stanley Abraham, S Sunitha, R Vasantharaja, R Thirugnanasambandam
The present study was carried out to compare and correlate the phenolic and flavonoid contents of Turbinaria sp., Sargassum sp. and Gracilaria sp. extracted using different solvents including methanol, isopropyl alcohol, acetone, acetonitrile, ethyl acetate and hexane, and elucidated for their anti-oxidant activity. The total phenolic and flavonoid contents of the solvent extracts were determined using
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Enhancement of bacteriorhodopsin production from novel haloarchaea strains of Marakanam region of Tamil Nadu Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 J Steffy, L S Abraham, D Inbakandan, K Govindaraju, G Dharani
Haloarchaea from high saline habitats are known to contain industrially important value-added bioactive compounds such as bacteriorhodopsin, carotenoids, lipids, and proteins. The diversity of Haloarchaea from geographically less explored saline habitats has received less attention. In this study isolation and characterization of the biotechnological potential of novel haloarchaea strains from solar
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Cardio protective activity of Sargassum wightii on isoproterenol induced myocardial stress in rats Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 R E Renitta, S Rosario, P J Jane Cypriyana, A V Samrot, S Dhiva, S Abirami, P Prakash
The aim of this investigation is to determine whether the methanolic extracts of Sargassum wightii can protect rats against isoproterenol-induced myocardial infarction. Four different groups of rats (6 rats in each group) were taken; where group 1 comprised of normal untreated rats, group 2 was injected with Isoproterenol (synthetic catecholamine), group 3 was considered as standard and hence, was
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Analysis of bioactive compounds from Gracilaria foliifera based on lunar phases Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 L S Abraham, P Prakash, N M D Sai Krishna, S Sunkar, O R Paramasivam, B I Thomson, K Rajakumari
Gracilaria foliifera, sustainable renewable resources in the marine environment. Gracilaria, a genus of red algae, notable for its economic importance as an agarophyte. In the present study, experiments were performed to investigate the phytochemical constituents of Gracilaria foliifera. Samples were collected during three different lunar phases namely new moon, full moon and between days. The collected
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In-vitro biocompatibility studies of nanochitosan/ polyvinylpyrrolidone blends on MC3T3-E1 cells showing beneficial effect in bone tissue engineering Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 V Sangeetha, P N Sudha, J Jayaprabakar
Chitosan is a naturally occurring polymer with numerous biological properties that can be used in the biomedical field. Chitosan was modified to nanochitosan in this study. The polycationic nature of chitosan interacts with polyanions (TPP) to form nanoparticles. The prepared nanochitosan was mixed with polyvinyl pyrollidone to create binary blends with ratios of 1:1, 1:2, and 2:1. The polymeric blends
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In-vitro screening of amylase producing halophilic bacteria isolated from seawater Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 S Abirami, M Muthu Lakshmi, A V Samrot, P J Jane Cypriyana, S Saigeetha, G Narendrakumar
In this study, eight halobacterial strains were isolated from seawater. Among the eight isolates, four strains grew well in nutrient medium with 40 g/100 mL of sodium chloride concentration. Amongst all, HA01 was found to show highest amylase activity than others. Highest amylase producing bacteria, i.e. HA01 was subjected for 16S rRNA sequence based identification and it was found to be Aquabacterium
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In-silico analysis of bioactive compounds extracted from seaweed Amphiroa anceps on the pathogenicity of bacteria Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-08-22 D Madathil, R Chidambaram
Screening of biochemical compounds in marine algae is a gateway to understand the bioactive principles of antimicrobial activity and may be a significant tool in developing environment friendly herbicides and in drug discovery. In this study, the antibacterial activity of the seaweed Amphiroa anceps extracted with methanol and ethanol was determined against clinical isolates namely Vibrio cholerae
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Response of surface chlorophyll to aerosol dust input in the Central Arabian Sea Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 R Roy, S Prakash, A Lotliker, P S Sudhakaran, S B Choudhury
The decadal trends in satellite-derived surface chlorophyll in conjunction with Aerosol Optical Depth (AOD) are explored in a unique area in the central Arabian Sea, known to mimic High Nutrient and Low Chlorophyll (HNLC) like conditions during late summer monsoon. The analysis indicates two recurring seasonal blooms, possibly associated with distinct biogeochemical processes in the studied region
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First record of Bengal reticulated puffer Chelonodontops bengalensis (Tetraodontiformes: Tetraodontidae) from Odisha coast, north-western Bay of Bengal with taxonomic notes Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 S K Roul, S Ghosh, P Rohit
The present study reports the first record of Bengal reticulated puffer, Chelonodontops bengalensis from Odisha coast in the northwestern Bay of Bengal based on two specimens (226 – 301 mm SL), each collected from Paradeep and Bahabalpur in 2018 and 2019, respectively. The detailed morphological features of C. bengalensis are provided and compared with its previous records. The species is distinguished
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A note on zoogeographic range extension of Endopachys grayi Milne-Edwards & Haime, 1848 (Scleractinia: Dendrophyllidae) from Andaman and Nicobar Islands Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 T Mondal, K K Bineesh, C Raghunathan
The family Dendrophylliidae represents solitary as well as colonial corals with a total of 183 extant valid species under the Order Scleractinia, distributed from littoral to the abyssal depths. During a recent deep-sea survey conducted by FORV Sagar Sampada (FORVSS367), a specimen of azooxanthellate dendrophylliid i.e. Endopachys grayi Milne-Edwards & Haime, 1848 was collected at the depth of 685
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Characterization of Tsunami and Palaeo-tsunami deposits in the Neil Island, South Andaman, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 D Sarkar, S K Bharti, S Hazra
The nature of tsunamigenic and palaeo-tsunamigenic sediments in Neil Island, deposited by the great Indian Ocean in 2004 is documented herein. Pit, trench and core samples were collected from the four beaches, namely, Bharatpur, Ramnagar, Sitapur and Lakshmanpur; which exhibit distinguished anomalies in the sedimentological parameters, viz. skewness, kurtosis and standard deviation at various depths
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First report on the distribution of Elysia bangtawaensis Swennen, 1998 in the mangroves of Udupi district, Karnataka Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 J S Veigas, K S Sreepada, S Y Tenjing
Mangroves are highly threatened tidal forests occurring along estuaries of coastal Karnataka. These forests support a high diversity of flora and fauna, including molluscs and crabs. A recently discovered species of mangrove leaf slug, Elysia bangtawaensis Swennen, 1998 belonging to the superorder Sacoglossa and family Plakobranchidae of Phylum Mollusca, was recorded for the first time in Karnataka
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Hatchery production of juveniles of pharaoh cuttlefish, Sepia pharaonis (Ehrenberg, 1831) from stranded eggs and sea ranching along the Thoothukudi coast Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 M Kavitha, I Jagadis, D Linga Prabu, C Kalidas, L Ranjith, S Willington
Accidentally entangled and stranded egg masses of Sepia pharaonis in fishing gears were collected from various landing centres of Thoothukudi district. The stranded egg masses were incubated, hatched and larval rearing was carried out at the Molluscan Fish Hatchery of Tuticorin Research Centre of CMFRI. The average hatching rate of S. pharaonis was 95 % for the eggs collected from the fishing nets
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Evaluation and performance of satellite-derived bathymetry algorithms in turbid coastal water: a case study of Vengurla rocks Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 M Ashphaq, P K Srivastava, D Mitra
The coastal region bathymetry is increasingly becoming necessary for emerging needs of navigation and development along coasts. Satellite-Derived Bathymetry (SDB) has been examined as a viable alternative for hydrographic surveys for the past few decades to reduce the data acquisition efforts in coastal regions and augmentation of periodic updating of Electronic Navigational Charts (ENCs). The previous
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Identification of CaCO3 polymorphs of shellfish by FTIR spectroscopy and evaluation of metals adsorption by powdered exoskeleton shell Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-28 K S Singh, S G Sawant
Shellfish are found in the coastal region throughout the tropical, sub-tropic and temperate zone. A variety of shellfish species are known in nature. Being filter-feeding organisms, organic and inorganic substances easily gain entry into them. Very often, heavy metals such as Cd, Pb, Cu, and even Hg can accumulate in their bodies. The presence of these heavy metals in shellfish is an indicator of environmental
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Morphological and meristic features of Vulnerable Tenualosa toli (Valenciennes, 1847) from Narmada estuary, Gujarat, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 D Bhakta, B K Das, S P Kamble, J K Solanki, R K Sah, L Kumar, A K Sahoo, A Pandit, S Samanta
A clupeid group (Hilsa) in the Indian sub-continent is represented by three species viz., Tenualosa toli, T. ilisha and Hilsa kelee, which has great economic significance for the fishers. Tenualosa toil is observed to have narrow distribution in the Indian sub-continent, along with vulnerability status. The present study describes the morphological and meristic features of T. toli collected from the
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Occurrence of a rare lambridiform fish, Desmodema polystictum (Ogilby, 1898) from Andaman coast of India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 M P Rajeeshkumar, K S Sumod, R Rajeev, K V Aneesh Kumar, M Hashim, N Sarvanane
The present study reveals the first documented distribution record of Desmodema polystictum (Ogilby, 1898) from the Andaman coast, eastern Indian Ocean. The species is rare in nature and the knowledge regarding the taxonomy, ecology and distribution is still limited. Only few records have been come from the Indian Ocean. The study is based on a single specimen (34 cm total length) collected from the
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First record of patchy coral reef off Terekhol, North Goa, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 G B Sreekanth, B S Ingole, B Pednekar, E B Chakurkar
This study reports the first time record of the patchy coral reef (~ 2 km2) of Terekhol in North Goa, the western coast of India during January – February 2020. There were more than 07 genera/species of hard corals in the reef and is dominated by a reef building Turbinaria mesenterina (Dendrophylliidae), which is considered as a sediment tolerant coral species. A total of 25 fish species were counted
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Occurrence record and range extension of Ebosia falcata Eschmeyer & Rama-Rao, 1978 (Scorpaenidae: Pteroinae) from West Bengal and Odisha, India Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 S Roy, D Ray, S R Mohanty, Anil Mohapatra
Present study reports the occurrence of scorpionfish Ebosia falcata Eschmeyer & Rama-Rao, 1978, for the first time from the northern part of the east coast of India (West Bengal and Odisha) based on four specimens (Standard Length: 55 – 73 mm). Description and figures of the species are provided herewith along with the morphometric measurements and meristic counts.
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Spatial and temporal variation in the distribution and abundance of Synechococcus spp., picoeukaryotes, nanoeukaryotes and Chlorophyll-a in the Eastern Black Sea Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 U Dokuzparmak, A M Feyzioglu
The abundance and distribution of Synechococcus spp., picoeukaryotes, nanoeukaryotes, and chlorophyll-a, were studied through the water column (from 0 – 100 m depth) during four different seasons along the Eastern Black Sea coast. Based on annual average values, Synechococcus spp. were numerically dominant with an annual average of 3.40×104 cells mL-1, ranging between 0.51 and 9.93×104 cells mL-1,
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The assessment of African penguin (Spheniscus demersus (Linnaeus, 1758)) management performances at the Underwater World Langkawi, Malaysia Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 M H M Salleh, S M Nor
A Malaysian Aquaria, the Underwater World Langkawi (UWL), has brought in 14 African penguins (Spheniscus demersus) for their ex-situ conservation. Following The Penguin Husbandry Manual produced by the American Zoo Aquarium Association (AZA), the UWL has adopted the population as their management regime and, as a result, has successfully bred the population from a total of 14 individuals to 40 individuals
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Effects of GnRH-a on the ovarian maturation of blue tang fish (Paracanthurus hepatus Linnaeus, 1776) Indian J. Geo Mar. Sci. (IF 0.5) Pub Date : 2022-07-12 H M Sang, H S Lam, P X Ky
The effects of gonadotropin-releasing hormone – analogue (GnRH-a) injection on the ovarian maturation and steroid hormone level of blue tang (Paracanthurus hepatus) females were investigated. Pre-matured blue tang females were injected with GnRH-a at dosages of 150, 200 and 250 μg/kg body weight and were then observed for fluctuation of steroid hormone levels, including testosterone (T), estradiol