S. Aanand

• Ph.D in Fisheries Science
• Professor (Assistant) at Tamil Nadu Dr. J Jayalalitha Fisheries University

Background: The length-weight relationship is estimated for four catfish species in order Siluriformes. Methods: Fish samples were collected from the three sampling stations at Stanley Reservoir, Tamil Nadu, Southeast India, between December 2021 to November 2022. Fulton’s condition factor (KF) (Fulton, 1904) , calculated using the formula KF = (W/...

fresh water has been considered as one of the most important resources over the years. From ancient times, civilizations have depended on freshwater bodies-lakes, reservoirs, rivers and wetlands. Freshwater is essential for only to sustain human life but also to support the activities that form the basis for thriving economics. This text book on li...

The length-weight relationships (LWRs) of 15 lethrinid fish species of the Gulf of Mannar, Southeast Coast of India were studied. The fish specimens were collected fortnightly from three main fishing harbours Thoothukudi, Pamban and Chinnamuttom from December 2022 to November 2023. These coastal fish species were caught usinggears such astrawl net,...

Background: The Gulf of Mannar, situated on the southeast coast of India, is a unique distinctive productive marine ecosystem and is rich in biodiversity. Its significance stems from the presence of a string of 21 islands spanning 140 km between Rameswaram and Tuticorin, each adorned with a wealth of coral reefs and hosting a variety of ornamental...

Bhavanisagar reservoir, built across the Bhavani river, a major tributary of the river Cauvery is one of the largest reservoirs in India and second largest reservoir in Tamil Nadu. Bhavanisagar dam having an average reservoir size of 3695 ha. As part of a study on checking the occurrences of the fish species along Bhavanisagar reservoir, the first...

Research on the occurrence of microplastics in invertebrates of the Thoothukudi region is limited. Capitellids are non-selective suspension feeders and are usually used as bioindicator of water pollution. Hence, an investigation was carried out to identify the microplastic occurrence in the capitellids (Capitella capitata) (Fabricius, 1780) collect...

A feeding trial of 75 days was conducted in tanks to study the performance of shrimp head meal (SM), crab shell meal (CM) and silkworm pupae meal (SWP) on the growth and digestive enzyme profile of pearlspot, Etroplus suratensis. Four iso-nitrogenous diets with 31.5% crude protein replacing 50% fishmeal (FM) in the diets were formulated viz., SM (T...

This experiment has been carried out under TN-IAMP (Tamil Nadu-Irrigated Agriculture Modernization Project, financed by World Bank) in two selected farm ponds (T 1 and T 2) of the delta district of Tiruchirappalli (Latitude '10.775632'N and Longitude '78.692360'E) in Tamil Nadu, India, coming under the research and technical purview of Directorate...

This study evaluates the distribution of pesticide residues (PRs) and assesses the ecological and human health risks posed by them from seawater, sediment and edible seaweeds in the Gulf of Mannar. Results showed that hexachlorocyclohexane, heptachlor, aldrin, endrin and endosulfan were the predominant PRs. The maximum concentration of PRs was obse...

An experiment was conducted to study the effect of solid-state fermentation (SSF) of cottonseed meal (CSM) with Saccharomyces cerevisiae on anti-nutritional factors and amino acid profile. Methods: A finely ground CSM was fermented with baker's yeast for 48 h at room temperature with periodic observations of pH, temperature and moisture. The fermen...

The feasibility of using silkworm pupae meal and black soldier fly larvae meal in combination to replace fish meal in koi carp fry was assessed. Two weeks-old koi fry (2.47±0.15 cm, 0.28±0.06 g) were used as experimental animals. Four iso-nitrogenous experimental diets (T1, T2, T3, T4) with 35±0.37% crude protein were formulated. In T1, T2 and T3,...

The feasibility of using silkworm pupae meal and black soldier fly larvae meal in combination to replace fish meal inkoi carp fry was assessed. Two weeks-old koi fry (2.47±0.15 cm, 0.28±0.06 g) were used as experimental animals. Fouriso-nitrogenous experimental diets (T1, T2, T3, T4) with 35±0.37% crude protein were formulated. In T1, T2 and T3,50%...

Microplastics pollute the marine environment and pose a greater risk to marine organisms. The microplastics were observed in the guts of the 12 species, which varied from 0.00 to 1.80 ± 1.19 particles /individual. Most of the microplastics were fibre shaped, 0.5–1 mm sized, blue-coloured, and polyethylene polymers. The abundance of the microplastic...

A 60 days feeding trial was conducted to investigate solid-state fermentation techniques (SSF) to improve the nutritional value of agri-industry wastes such as sunflower seed meal (SFM) and evaluate their performance as aqua feed for rohu during the nursery phase. Three iso-nitrogenous experimental diets with 30% CP formulated at 30%, 40%, and 50%,...

Microplastics contamination poses a serious threat to marine biota, so the current study was carried out to assess the incidence of microplastics in the gastrointestinal tracts of pelagic and benthic species collected from the six sampling sites along Thoothukudi region from January 2021 to December 2021. In the present study, benthic species (0.67...

This chapter focuses on the significance and impact of dietary lipids on the growth, maturation, reproductive performance and other aspects viz, immunity, fatty acid profile and lipid level requirements in diets of carps and their variants. Indian major carps, such as catla, rohu and mrigal, are excellent fast growing food fishes than any other...

Environmental contamination brought on by the discharge of wastewater from textile industries is a growing concern on a global scale. Textile industries produce a huge quantity of effluents containing a myriad of chemicals, mostly dyes. The discharge of such effluents into the aquatic environment results in pollution that adversely affects aquatic...

This study evaluates the feasibility of microalgae cultivation in a twin-layer recirculation system (TLRS) for nutrient removal from the aquaculture effluents. The green microalga Picochlorum maculatum (KJ754560) was cultivated in a TLRS module made up of two different types of layers, a macroporous metal wire mesh source layer and the microporous...

Microplastics are a widespread environmental contaminant that raises serious concern for aquatic organisms. Hence, the present study was conducted to investigate the spatial and seasonal variation of microplastics, their characteristics, polymer types and the risk assessment caused by the microplastics in six sampling sites along the Thoothukudi re...

Microplastics accumulation on beaches raises a serious concern worldwide. Hence, the present study was conducted with the focus of investigating the abundance, characteristics, risk assessment, surface morphology and elemental composition of microplastics (MPs) in the beach sediments of the Thoothukudi region, situated on the south-east coast of In...

Aim: The aim of the present study was to analyze two different culture systems for their suitability in rearing the Genetically Improved Farmed Tilapia fry. Methodology: Genetically Improved Farmed Tilapia fry (Average body weight 0.50 g) were stocked, at a rate of 1500 fry,in tank and hapa.Three cement tanks (2 m × 2 m × 1 m; 4000 l) and three nur...

Aquaculture, a reliable source of economic gain and employment generation, mainly stands on formulated fish feed costs. Protein is the essential component of animal tissues and constitutes about 65-75% of fish tissue dry matter. Therefore, protein is considered an essential nutrient source, providing a group of essential and nonessential amino acid...

Background: The present study explored the possibility of using live feed, as vector for supplementing the androgenic hormone in aquaculture seed production. Methods: The study consisted of five treatment doses of 17α-methyl testosterone namely; control (without hormone), T1 (20 mg L-1), T2 (40 mg L-1), T3 (60 mg L-1) and T4 (80 mg L-1) and each we...

Better nutrition in aquaculture is essential for higher growth and improved yields. Enhancing production through the intensification of cultural practices ensures profitability and a sustained supply of fish protein. However, such intensification of aquaculture practices shifts the emphasis to feed-based culture. Feed cost represents the significan...

Aquaculture is a rapidly growing food-producing sector that currently accounts for more than 50% of the fish for human consumption worldwide. Overcrowding and water quality deterioration in high-density fish-producing systems necessitates the need for antimicrobials. The selective pressure exerted by these drugs results in the emergence of resistan...

This technical article focuses on the larval rearing and management of koi fry in nursery phase

Fish meal is the chief protein source in most of the aquafeed industry. However, in recent days the demand for fish meal has increased, dragging price in the market. Hence, researchers and feed formulators have been looking for alternative protein ingredients to replace fish meal in aquafeed. Among the various plant and animal protein sources, inse...

The seafood industry generates huge quantity of wastes during processing of the crustaceans viz., shrimps, crabs and lobsters. After processing of the crustaceans, exoskeleton, carapace and hull are thrown out as a waste product in large quantities by seafood plants. These wastes contain appreciable amount of protein and carotenoids making them sui...

Insect meal plays an essential role in the aquafeed sector. Since the demand and price of fish meal have been consistently increasing, the feed formulators search for an alternative protein source to replace fish meal in the aquafeed. Among various insect meal silkworm pupae meal is one promising alternative protein source with a nutritional profil...

The edible part of crustaceans such as shrimps, crabs, lobsters represents only 20-25%, and the remaining are discarded as wastes. Approximately 70% of total shrimp landings end up as waste, so there is a tremendous tonnage of shrimp waste produced globally. These wastes are rich in protein and chitin, making them suitable as a protein source in an...

Irradiation is the process of exposing any material to radiation. Exposure can come from a variety of sources, including natural ones. Rather than radiation exposure to normal background radiation levels, the word most commonly refers to ionizing radiation and a dose of radiation that will serve a specific purpose. Non-ionizing radiation exposure,...

Fish meal is the primary protein source in fish feed for many reasons, such as high protein content, rich amino acid profile, and better nutrient digestibility. The consistent growth of the aquaculture sector has created an ever-increasing demand for fish meal in the market over the past decade. However, the worldwide supply of fish meal has reache...

The study was conducted to find out the efficiency of shrimp meal, crab meal as a 50% replacement for the fish meal in the aquafeed to improve the yields in aquaculture. Koi, a popular ornamental fish and variant of common carp, was selected for the study. The experiment was conducted for 60 days and growth performance was assessed. The results ind...

The present study was conducted to investigate the growth performance of Fancy koi fed with diets of 35% protein and 7% lipid level. The lipid in the diet was prepared with different lipid sources viz., blended edible vegetable oil (control), fish oil (T 1), Palmolein oil (T 2) and Groundnut oil (T 3). The experiment was carried in one cubic metre...

CRH-ACTH-cortisol axis, Pufferfishes, Stress, Tetrodotoxin How to c ite t his ar t ic le? Karthik et al., 2021. Stress Relieving Tetrodotoxin from Pufferfishes. Biotica Research Today 3(9): 725-727. Corresponding Author Key word s Open Access [ [ Article: RT711 P ufferfishes occupies its unique place in Japanese seafood restaurants because of its d...

The concentrations of eight trace elements (chromium, cobalt, copper, zinc, arsenic, cadmium, mercury and lead) in14 commercially important fish and shellfish collected from Thoothukudi along the southeast coast of India was investigated using inductively coupled plasma mass spectrometry in order to assess the health risks associated with their con...

The efficiency of Solid-State Fermentation on Cotton Seed Meal and its application in fish diet

The article deals about the Crab meal as a source of protein in aquaculture

Deals with application of Shrimp Meal as a protein source in Aquauculture

Fish meal is the chief protein source in most of the aquafeed industry. However, in recent days the demand for fish meal has increased, dragging price in the market. Hence, researchers and feed formulators have been looking for alternative protein ingredients to replace fish meal in aquafeed. Among the various plant and animal protein sources, inse...

Healthy coral reefs are amongst the valuable ecosystems on Earth. They provide billions of dollars in economic and environmental services, such as food, coastal protection, and tourism. However, coral ecosystems around the world face serious threats from several sources, including climate change, unsustainable fishing, land-based pollution, coastal...

Discusses on practical rearing of koi carp in the Nursery phase to obtain maximum yield

Vannamei farming is the fastest growing aquaculture sector globally and well established as the major protein source to fulfil the protein demand replacing the natural resources which are over exploited. Shrimp actively graze on the substrate present in the pond bottom and water column for feed. In a healthy shrimp, the gut is a vital organ, import...

Seaweed resources

ALGAL BIOPLASTICS – GREEN PLASTICS FOR A HEALTHY ENVIRONMENT

OPEN OCEAN AQUACULTURE – NEXT FRONTIER FOR SUSTAINABLE MARINE FISH FARMING - Discuss the possibility of utilizing the ocean for aquaculture practices. It also shares information on some experiments that are ongoing with regard to ocean farming and throws light into the various possible ideas that are currengly going in the sector

The present study to identify the best lipid source and optimum level of incorporation in the maturation diet of koi was carried out in 2 experimental trials. The first trial was conducted to evaluate the effect of selected lipid sources viz., commercial vegetable oil, fish oil, palm oil and groundnut oil on the reproductive performance of koi. The...

The present study was conducted to evaluate the impact of inclusion of hybrid red tilapia (Oreochromis mossambicus × O. niloticus) on productivity in carp based pond aquaculture. An experiment for a period of 270 days was conducted in two sets of earthen ponds (each of 0.132 ha size with 1.5 m depth). In Set I, five species viz. Catla catla, Labeo...

Andhra Pradesh is the leader in shrimp production, with 5, 10,794 metric tonnes being produced in the state according to 2019-2020 MPEDA report. Much of the culture is contributed by Penaeus vannamei, and a small contribution by tiger prawn P. monodon. Shrimp grow by moulting, and an understanding of the moulting cycle leads to success in its farmi...

Andhra Pradesh is the leader in shrimp production, with 5, 10,794 metric tonnes being produced in the state according to 2019-2020 MPEDA report. Much of the culture is contributed by Penaeus vannamei, and a small contribution by tiger prawn P. monodon. Shrimp grow by moulting, and an understanding of the moulting cycle leads to success in its farmi...

Length-weight relationships (LWRs) for three endangered and three near threatened fishes were reported from the Pechiparai Reservoir, Kodayar Reservoir, Chittar 1 & 2 Reservoirs of Tamil Nadu, India. Samples were collected using gillnet (mesh size ranges from 12 to 40mm) and cast nest (mesh size ranges from 10 to 20mm) from June 2016 to May 2017. F...

This paper deals with the fresh water fish diversity of Pechiparai Reservoir located in southern part of Tamil Nadu.

The aim of this study was to determine the impact of replacing fishmeal with silkworm pupae (Bombyx mori) meal in the diet of rainbow shark Epalzeorhynchos frenatum (Fowler, 1934), on growth and maturation. Four isonitrogenous and isocalorific experimental diets (35% CP) were prepared using silkworm pupae (SWP) replacing fish meal at three differen...

Bioaccumulation of organochlorine pesticides (OCPs) in red, green, and brown seaweeds from the Gulf of Mannar was investigated using gas chromatography–mass spectrometry (GC–MS). The concentration of OCPs in all the seaweeds was in the order of endosulfan > endrin > HCH > DDT > aldrin > heptachlor > methoxychlor. The concentrations of HCH, endrin,...

Microalgae are utilized diversely in aquaculture, as a live feed for culture of marine fin fish larvae. They are rich in nutrition and used as a component or as a food additive to supply basic nutrients and for the larvae. The larvae of molluscs, echinoderms and crustaceans as well as the live prey of some fish larvae feed on microalgae. The most f...

Abstract Microalgae are utilized diversely in aquaculture, as a live feed for culture of marine fin fish larvae. They are rich in nutrition and used as a component or as a food additive to supply basic nutrients and for the larvae. The larvae of molluscs, echinoderms and crustaceans as well as the live prey of some fish larvae feed on microalgae. T...

Concentrations of trace elements (arsenic, cadmium, mercury, and lead) in tissues (muscle, gills, and digestive gland) of three commercially exploited crustaceans (Portunus sanguinolentus, Charybdis natator, and Penaeus semisulcatus) and three cephalopods (Doryteuthis sibogae, Sepia pharaonis, and Cistopus indicus) were examined. The animals were c...

The marine ornamental fish trade moves nearly 20-25 million live fish worldwide per year. Nearly 90% of these are wild caught from the pristine coral reef environments. The demand for fishes is on the rise and it has led to depletion of natural fish stocks around the globe. Clown fishes (Amphipirion sp.) are among the most popular marine ornamental...

Bioindicators are organisms or biological processes which indicate altered environmental conditions and can be used to identify and/or quantify the impact of pollutants on the environment. The assessment on the status of bioindicators would indirectly provide an estimate of the natural state or the level/degree of contamination that is present in t...

India possesses a great diversity of fishes several of which are very much suitable for ornamental purposes. However, India’s contribution to the international ornamental fish trade is negligible standing at 1.6 million US$ ranking 31st in the word (2016). Total world ornamental fish trade has been estimated to be more than US$ 15 billion with the...

Aquaculture is one of the fastest growing sector which produces fish - a cheap source of protein and nutrition. In the recent past, the growth of aquaculture sector was booming, due to declining catches from wild capture fisheries. So, in future, fish protein is full and full depends on aquaculture only. The annual fish production in 2016 is 171 mi...

The present study aims to assess the physicochemical parameters and distribution of aquatic macrophytes of seasonal wetlands flowing into the coast of Palk Bay, southeast coast of India. We tested the hypothesis whether there is any statistically significant difference in physicochemical parameters and macrophyte communities among study location. W...

Aquaculture provides the cheapest source of animal protein to about 13% of the world population and employs an estimated 24 million people. The industry is projected to meet the global deficit of fish protein by 2020 due to stagnant marine fish landings. Although the sector is diverse in terms of species cultured and farming practices, cage culture...

Global aquaculture production (including aquatic plants) stands at 110.2 million tonnes, with the first-sale value estimated at USD 243.5 billion. The total production included 80.0 million tonnes of food fish and 30.1 million tonnes of aquatic plants. Since 2000, world aquaculture no longer enjoys the high annual growth rates of the 1980s and 1990...

The ever-increasing cost of fish meal and other ingredients for fish feed has led to the search for other alternatives for protein source by the industry. Insects, form part of the natural fish diet and they represent a good source of protein. Over the last decade, studies on the replacement of fishmeal with insect meal have emerged with promising...

PCR-SSCP and PCR-FINS methods were developed to authenticate nine species of snapper. A highly variable mitochondrial D-loop region was chosen as a target region and three new primers viz., one forward (Fish-DL-F) and two reverse primers (Fish-DL-R and DLFR) were designed. PCR-SSCP was first targeted to amplify 515 bp D-loop fragment using Fish-DL-...

Five specimens of dactylopterids measuring 220.5–320.0 mm standard length caught commercial trawler fishing in 80–120 m deep waters of Wadge Bank off Kanyakumari coast (8.02 N, 76.80 E) were collected from the landing centre at Jeppiaar fishing harbour, Muttom, Southwest coast of India. The specimens were identified as Dactyloptena peterseni (Nystr...

In the present investigation a total of 1844 fish specimens under 8 orders, 18 families and 41 genera and 65 species were collected from Pechiparai reservoir. The systematic checklist of fishes was prepared with note on common name, species abundance, habitat, length range, human utilization pattern, current fishery status and global conservation s...

Cobia Rachycentron canadum, also known as black kingfish, is the only species in the family Rachycentridae. It is commonly found throughout the world, except the central and eastern Pacific (Shafferand Nakamura 1989). Cobia is a pelagic species found in the water column of the open ocean from the surface to a depth of 1200 m (Shaffer and Nakamura 1...

ARTICLE INFO ABSTRACT This experiment on effect of water temperature on development of common carp egg, was condlucted with common carp egg collected and incubated in three places Viz., Chinese hatchery, indoor plastic trough and outdoor plastic trough. The outdoor plastic trough was covered by a polythene sheet to keep the water warmer during day...

Fishery, population characteristics and stock estimates of Nemipterus bipunctatus were studied during June 2015 to May 2016 from Wadge Bank, South India. This region is characterised by rich biodiversity and has a conducive influence of the Indian Ocean and Arabian Sea. The asymptotic length (L∞), growth coefficient (K) and arbitrary origin of grow...

A PCR-RFLP protocol was developed for authenticating nine different snapper species by targeting the 515 bp fragment in highly polymorphic mitochondrial D-loop region with a newly designed primer Fish-DL-F/Fish-DL-R, followed by restriction digestion using a single enzyme, Tsp509I. Individual species could be differentiated by 3–5 major bands. Very...

ABSTRACT : Freshwater lakes are significant not only for human populations but also essential for plant and animal diversity. These aquatic systems are unique and are rich in biodiversity at the same time are under constant threat due to bludgeoning human populations and their demand for land. The impact of the anthropogenic activities in freshwate...

Abstract: The use of microorganisms to degrade or reduce the concentration of hazardous wastes on a contaminated site is called bioremediation. Such a biological treatment system has various applications, such as cleanup of contaminated sites such as water, soil, sludge, and streams. Rapid industrialization, urbanization, intensive farming and othe...

The present study was performed in semi-continuous method to calculate the optimum feeding rate and feeding frequency of Brachionus plicatilis with a yeast-based diet at 0.2g, 0.3g, and 0.4g yeast fed to a million rotifer in cement cisterns. Rotifer ind./ml, egg bearing ratio and population growth were evaluated in this study. The rotifer ind./ml w...

I S S N : 2 4 5 6-6 2 6 8 A B S T R A C T The present study was performed in semi-continuous method to calculate the optimum feeding rate and feeding frequency of Brachionus plicatilis with a yeast-based diet at 0.2g, 0.3g, and 0.4g yeast fed to a million rotifer in cement cisterns. Rotifer ind./ml, egg bearing ratio and population growth were eval...

The updated status of finfish species in their distribution and abundance were investigated in Pechiparai reservoir, Kanyakumari district in Tamil Nadu. In total 60 species of belonging to 8 orders, 17 families and 37 genera were recorded from the study area. Among these, Cypriniformes topped the list with 1 family with 14 genera and 27 species and...

Cage culture of fish is one of the proven methods of aquaculture. Cage culture is being looked up as an opportunity to utilize existing inland water sources with great production potential to enhance production from inland open waters and posed as an answer to the rising demand for animal protein in the country. Freshwater cage culture is an import...

The influence of environmental parameters on water quality at Poondi reservoir in Thiruvallur district of Tamilnadu on the basis of water quality index (WQI) was recorded in the present study. WQI was determined on the basis of various parameters like pH, dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), alkalinit...

Soil samples were obtained from 3 sites contaminated with polycyclic aromatic hydrocarbons(PAHs). These soil samples were enriched with phenanthrene as a sole carbon and energy source, and 36 strains of phenanthrene – degrading bacteria were isolated from 3 sites. Their genotypes were determined by restriction digests of the 16SrRNA genes (Amplifie...

Soil samples were obtained from 3 sites contaminated with polycyclic aromatic hydrocarbons(PAHs). These soil samples were enriched with phenanthrene as a sole carbon and energy source, and 36 strains of phenanthrene - degrading bacteria were isolated from 3 sites. Their genotypes were determined by restriction digests of the 16SrRNA genes (Amplifie...

The updated status of finfish species in their distribution and abundance were investigated in Pechiparai reservoir, Kanyakumari district in Tamil Nadu. In total 60 species of belonging to 8 orders, 17 families and 37 genera were recorded from the study area. Among these, Cypriniformes topped the list with 1 family with 14 genera and 27 species and...

Freshwater lakes are significant not only for human populations but also essential for plant and animal diversity. These aquatic systems are unique and are rich in biodiversity at the same time are under constant threat due to bludgeoning human populations and their demand for land. Water quality plays an important role in productivity of lakes. Ph...

This study was undertaken to document the marine ichthyofaunal diversity and their abundance along Wadge Bank to understand their current status. Fish specimens were collected fortnightly during June 2015 to May 2016 from Chinnamuom, Colachel and Vizhinjam landing centres of Wadge Bank along Southeast coast and west coast of India. A total of 12,57...

Bioremediation of seafood processing plant effluent by microorganism serves as an effective method to substitute the conventional recovery and removal process of effluent treatment. Waste water samples were collected from five different seafood processing plants in and around Thoothukudi, South India.From these samples several microbial isolates we...

The use of microorganisms to degrade or reduce the concentration of hazardous wastes on a contaminated site is called bioremediation. Biological treatment systems have various applications, such as cleanup of contaminated sites such as water, soil, sludge, and streams. Rapid industrialization, urbanization, intensive farming and other human activit...

The prime objective of the study was to invent the fish diversity of upstream waters of Pechiparai reservoir. Thirteen species of freshwater fishes have been recorded belonging to 9 genera and 6. families. Cyprinidae was the dominant family (6 species) in the study area, Of the 13 species, Dawkinsia arulius belong to the endangered category, Hyporh...

Bioremediation of seafood processing plant effluent by microorganism serves as an effective method to substitute the conventional recovery and removal process of effluent treatment. Waste water samples were collected from five different seafood processing plants in and around Thoothukudi. 40 bacterial strains were isolated from five different seafo...