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Muthuswamy Jaikumar

Dr.M.Jaikumar hold a professional working experience of 23 years as Marine Biologist as a marine ecologist firm and my capabilities makes me an extremely viable choice for your advertised position.
I have completed my Master's (Alagappa University, Karaikudi) and Doctorate degree in Marine Biology (Andhra University, Visakhapatnam) .
I have worked now as “Senior Field scientist” in “Sea6 Energy” for more than 6 years. And I have vast experience covering seaweed cultivation. Mainly growing seaweed in rougher water with technologies. And secondly, I have worked with equal competence with Mangroves eco-restoration project with CRRT, Chennai in Ennore creek and Muttukadu Creek as Consultant and Marine expert (Field work and DPR submission).
I have extensive experience in the field of Marine biology, Aquaculture, Prawn culture, Seaweed culture inside sea and creek. When I am working with Dr.M.Sakthivel in the Aquaculture Foundation of India. Chennai and I participated and worked in various Environmental Impact Assessment studies (EIA) for coastal development (Port & Harbours, Desalination plants, etc.) And I worked as a Marine expert in Voyant’s Solution as a Freelancer for more than 4 years.

I have completed 2 major project in Seaweed cultivation one in Tamilnadu and one in Gujarat, and also I worked in various consultancy /freelancer in Chennai Ennore creek and Muttukadu creek as technical and marine expert to the client for (CRRT) Chennai River restoration project funded by Tamil Nadu Urban Infrastructure Financial Services Limited (TNUIFSL).

And I took on a project and worked as Principal Investigator in Seaweed Shrimp feed trials with a project sponsored by Industry collaboration with Fisheries University Tamilnadu. (U.S.O No.168/R1/TNJFU/2019, Rc.No.680/R1/TNJFU/2019.

I participate in various cruises for marine biology samples in the East coast and west coast.

I have worked as “Project Scientist” in NCCR, National Central for Coastal Research (Ministry of Earth Sciences Chennai) for 3 years and I carried out Eco toxicology and “Senior Project Associate” in Institute for Ocean Management, Anna University for a period of 1 year.

Worked as “Scientist” in the “Aquaculture Foundation of India” period for 2.5 years. Planning and executive the project at root level for the fisher folk livelihood as part of seaweed cultivation in Palk Bay region.

I have also completed training courses from various National and International Organization to strengthen the field of Marine biology for my career growth.

I have been appointed as “Member of Board of Studies” in the Department of Oceanography and Coastal Area Studies, Alagappa University, Karaikudi (Accredited with A+ grade by NAAC (CGPA 3.64 in the Third Cycle)

I undergo Training conducted by (CAA) Coastal aquaculture Authority Govt of India, and JIFSAN (The Joint Institute for Food Safety and Applied Nutrition college park, Maryland, USA. Course on “Train the trainer” on GOOD AQUACULTURE PRACTICE (GAqP) at Chennai. INDIA.
And during my doctoral research, I guided MS students from Alcorn State University, Mississippi, USA. Program with Minority International Research Training (MIRT) (Contract No. NIH/FIC/MIRT TW00132: MBRS-SCORE GM535356) from 06/2005-08/2005
uring Covid 19 Situation, I have been invited to various research institutes and Universities for Webinar Virtual Talk in the field of Recent trends in Aquaculture.
Supervisors: Prof C. Stella, prof .AV Raman, DR.GVM. Gupta, Dr.Uma Mageswehera Roa, and Dr.Ganesan. Dr.Bala Subramanian
Phone: +919884742424
Address: ICCSIR, VRTI Campus, Mandvi - Bhuj Highways. Kachchh. Gujarat

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Papers by Muthuswamy Jaikumar

Aquaculture

Fisheries and aquaculture have emerged as a promising food production sector at the global level ... more Fisheries and aquaculture have emerged as a promising food production sector at the global level as well as regional levels. Fish and fish products are produced in one region and then are traded across various parts of the world. The whole sector is dependent on chains of workers engaged at landing centres, breeding units, processing units, and the trade and export chains. When the pandemic and the subsequent lockdown hit the country, it affected the whole sector and caused a huge decline in the production and trade of fishing products. This article aims to have a glimpse into the aquaculture sector and evaluate the impact of the pandemic on this sector in India. This valuable information can be of great importance to government and aquatic food suppliers so that they can evolve their strategies to withstand ongoing and future pandemics. It also helps them in framing regional and sectorial adjustments to transform investment plans, match market demands, improve monitoring strategies and get prepared for future needs.

Biogeochemistry, 2008

Studies on biogeochemical cycling of carbon in the Chilka Lake, Asia's largest brackish lagoon on... more Studies on biogeochemical cycling of carbon in the Chilka Lake, Asia's largest brackish lagoon on the east coast of India, revealed, for the first time, strong seasonal and spatial variability associated with salinity distribution. The lake was studied twice during May 2005 (premonsoon) and August 2005 (monsoon). It exchanges waters with the sea (Bay of Bengal) and several rivers open into the lake. The lake showed contrasting levels of dissolved inorganic carbon (DIC) and organic carbon (DOC) in different seasons; DIC was higher by ~22% and DOC was lower by ~36% in premonsoon than in monsoon due to seasonal var iations in their supply from rivers and in situ production/mineralisation. The DIC/DOC ratios in the lake during monsoon were influenced by physical mixing of end member water masses and by intense respiration of organic carbon. A strong relationship between excess DIC and apparent oxygen utilization showed significant control of biological processes over CO 2 production in the lake. Surface partial pressure of CO 2 (pCO 2), calculated using pH-DIC couple according to Cai and Wang (Limnol and Oceanogr 43:657-668, 1998), exhibited disce rnable gradients during monsoon through northern (1033-6522 µatm), central (391-2573 µatm) and southern (1 02-718 µatm) lake. The distribution pattern of pCO 2 in the lake seems to be governed by pCO 2 levels in rivers and their discharge rates, which were se veral folds higher during monsoon than premonsoon. The net CO 2 efflux, based on gas transfer velocity parameterization of Borges et al. (Limnol and Oceanogr 49(5):1630-1641, 2004), from entire lake during monsoon (141 mmolC m-2 d-1 equivalent to 2.64 GgC d-1 at basin scale) was higher by 44 times than during premonsoon (9.8 mmolC m-2 d-1  0.06 GgC d-1). 15% of CO 2 efflux from lake in monsoon was contributed by its supply from rivers and the rest was contributed by in situ heterotrophic activity. Based on oxygen and total carbon mass

CRC Press eBooks, Oct 20, 2022

Aquaculture, 2023

IOSR Journal Of Environmental Science, Toxicology And Food Technology, 2013

The in vitro total antioxidant assay, total phenolic content, DPPH assay, FRAP assay of the aceto... more The in vitro total antioxidant assay, total phenolic content, DPPH assay, FRAP assay of the acetone extracts from four centric diatoms (Chaetoceros simplex, Skeletonema costatum, Odontella mobiliensis, Coscinodiscus centralis) and three pennate diatoms (Nitzschia closterium, Pleurosigma angulatum and Navicula sp.) were performed. The centric diatom, O. mobiliensis was found higher amount of phenolic content (0.75 ± 0.06) followed by C. simplex. The maximum total antioxidant activity of 45.03 ± 2.1 ascorbic acid equivalent/g was observed in P. angulatum followed by the centric diatom C. simplex. The O. mobiliensis was showed significantly higher DPPH radical scavenging activity of 70.04 ± 4.17 % followed by C. simplex (55.69 ± 2.52 %) and P. angulatum (49.57 ± 2.74 %). The phenolic compounds of acetone extracts were not major contributor to the antioxidant capacities of these diatoms. The pigments such as, chlorophylls and carotenoids may be the main contributor of antioxidant activity in this study. The total antioxidant activity may be increased when extracted other solvent. Thus, these species can be act as natural antioxidant source for food preservation and protection of organisms from the degenerative diseases.

Fish populations in two distinct types of artificial reefs (Ferro cement and Flyash) in the Tutic... more Fish populations in two distinct types of artificial reefs (Ferro cement and Flyash) in the Tuticorin coast of Gulf of Mannar, on the southeast coast of India, were studied using the visual census method. The fish were recorded by swimming along each transect within a 50 x 10 corridor (500 m2), identifying the species that were found near or at a visible distance of each transect. The visual survey was conducted at the Ferro cement artificial reef sites (FC sites) from June 2002 to October 2003, and at fly ash artificial reef sites (FA sites) from February 2004 to January 2005. The advantages and disadvantages of both techniques on the accuracy of qualitative and quantitative results are discussed. Fifty-two species belonging to 33 families were observed during the entire study period. The highest mean value of diversity (1.31) was recorded at FA site 4, and the lowest value (0.86) was recorded at FC site 2. Cluster analysis was applied to analyze the relationship between fish assem...

Journal of ecology and the natural environment, 2011

Chilka is the largest brackish water lake in Asia and also the second largest lake in the world. ... more Chilka is the largest brackish water lake in Asia and also the second largest lake in the world. It is situated between 19°28' and 19°54' North latitude and 85°05' and 85° 38' East longitude. A mix of estuarine, marine and freshwater ecosystem is observed here and the lagoon has a long history of sustainable fishing. In September 2000 as a part of its management endeavour, the local authority had opened a new mouth at Satpada to facilitate efficient tidal mixing between the lake and the sea. Prior to this (1996 to 1997) salinity in the lake was low, which favoured intense growth of (invasive) macrophytic vegetation (e.g. Potamogeton, Halophila, Gracilaria, Ruppia etc.) and the effect is the greatest in the northern most part of the lake with intense (freshwater) weeds mainly Eichornia, Hydrilla, Chara, etc. Aquatic macrophytes are important in the functioning of the water body. They offer food and shelter for many organisms and promote habitat diversity. The paper se...

The growth inhibition effect of organophosphate pesticide, Monocrotophos on Odontella mobiliensis... more The growth inhibition effect of organophosphate pesticide, Monocrotophos on Odontella mobiliensis and Coscinodiscus centralis was investigated. Growth of diatoms was reduced on exposure to low concentrations (2 to 8 mg/L) of Monocrotphos (MCP) up to 48 hrs afterwards growth was normalized, but higher concentrations have seized the growth completely. The IC50 of MCP was 7.2±0.3 mg/L and 17.7±3.9 mg/L on O. mobiliensis and C. centralis respectively. The No Observable Effect Concentration (NOEC), Low Observable Effect Concentration (LOEC) and Sub Chronic Values (SChVs) were estimated to be 0.5±0.04, 0.95±0.06 and 0.69±0.03 mg/L on O. mobiliensis and 1.05±0.07, 2.13±0.11 and 1.5±0.09 mg/L on C. centralis. The results of present study ascertained that the MCP is moderately toxic to diatoms and the safe concentration of MCP for diatoms was determined to be less than 0.5 mg/L.

Population increase in the last 50 years Chennai with current population of 4,681,087 (4.6 millio... more Population increase in the last 50 years Chennai with current population of 4,681,087 (4.6 million) is one of the largest cities of South India. The Population density of Chennai is 26903, which is currently largest in the state of Tamil Nadu. Chennai has witnessed a tremendous growth in its manufacturing, retail, health care and IT sector in the last 10 years., The fast growth of population has caused rapid in increase the domestic sewage pollution This present study deals with the wastewater sewage discharge to the Velachery lake near southern chennai. It is proposed to control the pollution through water hyacinth (Eichhornia crassipes). Phytoremediation considered the best technology in order to solve the sewage pollution. The main objectives of the study is to reduce the sewage effluents load in the lake by a continuous phytoremediation process using E. crassipes and second use the lake ecofriendly for Aquaculture and Tourism.

Preliminary investigation on the culture of Siganus canalicullatus in floating cages in Mandapam ... more Preliminary investigation on the culture of Siganus canalicullatus in floating cages in Mandapam coastal water has revealed that the fish has high culture potential in the region. It is euryhaline, inhabiting areas where salinities range from 23’/,, to 35.8O/,, ,. The fish grows faster on pelletted diets than on ordinary seaweeds. It is estimated that the fish would reach a marketable size of 20 cm fork length in 6 months; hence two crops can be harvested in a year. This would be a good source of income to fisher folk in Mandapam area. Key words: Siganus canalicullatus, Mandapam coast, cage culture, fisher folk.

Milkfish (Chanos chanos) is one of the most important brackishwater finfish species being culture... more Milkfish (Chanos chanos) is one of the most important brackishwater finfish species being cultured in Southeast Asia. Natural milkfish fry occur along the southeast coast of India in fairly large numbers during the months of March-June and October-November. Present study emphasizes the seasonal variation and distribution of milkfish along the southeast coast of India. Milkfish culture has to be economically competitive compared to shrimp and other fish culture which do not contribute to local food supply. Annual total production from the Philippines, Indonesia, and Taiwan has been exceeding 0.5million tons since 2009. The industry has relied on wild-caught milkfish fry, which is unpredictable, until hatchery fry became available in 1987. This paper compares the collection of wild seed near mandapam area as well as production costs in cage. Milkfish eggs (1.1-1.2 mm in diameter) and larvae (3.5 mm at hatching) are pelagic and stay in the plankton for up to 2-3 weeks. This would be a good source of income to coastal fisherfolk in Mandapam.

World Applied Sciences Journal

Preliminary investigation on the culture of Siganus canaliculatus in floating cages in mandapam c... more Preliminary investigation on the culture of Siganus canaliculatus in floating cages in mandapam coastal water has revealed that the fish has high culture potential in the region. It is euryhaline, inhabiting areas where salinities range from 17 ppt to 37.0 ppt. The Juvenile are abundant in the area of reef and seaweed bed and collecting in traps near mandapam. Natural occurrence of juveniles of S. canaliculatus in large quantity was noticed during February through May in the Gulf of Mannar. The fish feeds mainly on seaweeds. It is reported that the fish can reach a marketable size of 20 cm fork length in 6 months. The rabbit fish is cultured in South East Asian countries. India has enormous potential for rabbit fish culture.

Middle East Journal of Scientific Research

The diversity, abundance, size fraction phytoplankton biomass and primary productivity in the she... more The diversity, abundance, size fraction phytoplankton biomass and primary productivity in the shelf waters of six transects along the southern Kerala coast were studied in relation to the prevailing hydrological conditions. Southwest coastal waters of India (Arabian Sea) especially have a special environmental importance due to the formation of mudbanks, upwelling and coupling of these waters with adjacent watershed through backwaters. These coupling provides perennial source of nutrients to the adjacent coastal waters and supporting rich primary production. Result indicated that primary productivity and phytoplankton standing crop were directly tuned with chlorophyll a and nutrient concentrations. About 105 species of phytoplankton were identified in the neritic waters of southern Kerala coast. Among these, 75 species belonged to diatoms (Bacillariophyceae) and 25 to dinoflagellate (Dinophyceae). Haptophyceae was represented by two species while blue-green (Cyanophyceae), greens (Chlorophyceae), and silicoflagellate (Chrysophyceae) were represent by one species each. Phytoplankton diversity (Margalef richness d’, Shannon- Wiener H’, Pielou’s evenness J’), abundance and biomass in the waters of Paravur, Neendakara and Alleppy transects were observed to be higher relative to southern transect Veli. The nanoplankton (2-20 μm) community formed the major fraction of chlorophyll a and primary production followed by micro- (>20 μm) and pico- (0.2-2 μm), respectively. The study suggested that phytoplankton abundance; biomass and community structure played a crucial role on organic production available to the marine food web and was significantly influenced by the enrichment of nutrients from the catchment discharge and hydrographical conditions.

Aquaculture

Biogeochemistry, 2008

CRC Press eBooks, Oct 20, 2022

Aquaculture, 2023

IOSR Journal Of Environmental Science, Toxicology And Food Technology, 2013

Journal of ecology and the natural environment, 2011

World Applied Sciences Journal

Middle East Journal of Scientific Research

CRC Press,Taylor & Francis group, 2023

Seaweeds are a vital part of coastal ecosystems, which offer indispensable ecosystem services as... more Seaweeds are a vital part of coastal ecosystems, which offer indispensable ecosystem services as well as socio- economic values for the lives of various marine forms. The seaweed industry has huge economic value and significantly contributes to the sustainable development of rural coastal provinces. Seaweeds are cultivated in many Asian countries, and the production of phycocolloids from seaweeds is extensive across the globe. Seaweed resources are abundant in India, particularly on the west coast and the southeast coast of India. India has an 8100 km stretch of coastline, and it includes an Exclusive Economic Zone (EEZ) around 2 million sq km, consisting of coastal and island ecosystems, and these are same as 66% of the total mainland area. About 30% of the people depend on these areas for utilizing a large variety of seaweed populations (Ganesan et al. 2020). The highest seaweed diversity was reported on the Southeast Coast of Tamil Nadu, Gujarat, Lakshadweep islands, and Andaman and Nicobar Islands. In India, seaweed cultivation is being taken up on a large scale, particularly in the coastal districts of Tamil Nadu, because of suitable environmental conditions such as the shallow nature of the bottom and a lesser tidal influence (Figure 16.1). This favours the cultivators who can do more
cycles of cultivation every season, especially in three coastal districts. In Gujarat, only a pilot scale of cultivation has been tried in a few districts because in this region, tidal amplitude is very high with high wave action. Such conditions are not favourable to do more cycles of cultivation. A pilot
scale cultivation has been carried out in the state of Andhra Pradesh, for example, in Visakhapatnam district in cages and in the Krishna district, Nayalanka, in PVC rafts pipes.

The Royal Society of Chemistry 2024 Published by the Royal Society of Chemistry, www.rsc.orgBlue Bioeconomy: Value-added Products from Marine Algae and Microorganisms, 2024

India is the world’s fifth-largest consumer of fish and seafood, and it has one of the most varie... more India is the world’s fifth-largest consumer of fish and seafood, and it has one of the most varied culinary traditions. It has isolated hyper-local food microcultures that create fascinating dishes by utilizing the native flora and fauna, except seaweed. Worldwide, people who live close to the coast have long
consumed seaweed. With the rise in popularity and associated health
benefits of Asian cuisine, seaweeds are gaining traction in Western culture. In the modern world, many people are still unaware of the numerous benefits of seaweed and hold misconceptions about it. This is particularly true in India, where seaweed species have not been extensively exploited for culinary purposes and remain relatively unknown to the general public. Primarily, they are utilized for extracting phycocolloids, which are applied as agricultural fertilizers, or animal feed. However, seaweed isolates are now finding more and more culinary applications, especially as viscous polysaccharides, which help increase product acceptance and prolong shelf life. Seaweed cultivation is regarded as one of the fastest-growing industries worldwide. India’s contribution to the world’s seaweed production is only a small percentage, despite Asia being the epicentre of seaweed production worldwide. Seaweed has now been increasingly employed throughout the
world for various purposes, including food for humans, hydrocolloids,
medicine, cosmetics, animal and fish feed, fertilizers, soil conditioners,
etc.5–10 India is heavily reliant on imports in terms of seaweed value-added products. The country must therefore become self-sufficient in the production of seaweed and value-added products. The Indian government intends to invest roughly 86.8 million USD in the production of seaweed. The government has set a goal of doubling seaweed production to one million tons per year by 2025.

Global Blue Economy: Analysis, Developments, and Challenges, 2023