Sudhan Chandran

Central Institute of Fisheries Education | CIFE · Division of Fisheries Resources, Harvest and Post Harvest

The study has been conducted to investigate the length-weight, width-weight relationship and condition factor (K) of the freshwater mussel Parreysia favidens, from the river Burhi Gandak, Bihar India. A total 520 specimens were collected during July 2020 to June 2021. The observed length of P. favidens was ranged from 30 to 80 mm and weight ranged...

This study examines the physicochemical characteristics, morphometric features, bio-metric growth parameters, biological indices, physiological parameters, and biochemical profiles of Schizothorax niger population. The physicochemical analysis revealed a maximum temperature of 12.93 ± 1.33 C and hardness of 156.53 ± 12.82 mg/L in Dal Lake, whereas...

This study examines the physicochemical characteristics, morphometric features, biometric growth parameters, biological indices, physiological parameters, and biochemical profiles of Schizothorax niger population. The physicochemical analysis revealed a maximum temperature of 12.93 ± 1.33°C and hardness of 156.53 ± 12.82 mg/L in Dal Lake, whereas t...

Background: The estimated biodiversity indices showed spatial and temporal variations in the biodiversity of finfish and shellfish among the three stations of Ennore Creek, from September 2018 to August 2019 and from September 2022 to August 2023 at fortnightly intervals. Methods: A total of three sampling sites (S1, S2 and S3) were chosen in Ennor...

The microplastics waste has a major adverse impact on oceans, lakes, seas, rivers, and coastal region, the environment seriously threatened by them. Microplastics (MPs) are particles of plastic with a diameter of <5 mm that can be found in both primary and secondary sources. Global research is being done on the growing issue of MP contamination in...

In recent years, managing plastic garbage has become one of the most important environmental challenges. Conventional approaches that have been used to solve this issue have run across a number of obstacles that have reduced their efficacy in reducing plastic pollution. Inefficient recycling practices, the prevalence of single-use plastics, inadequ...

Ravikumar, T.; Neethirajan, N.; Chandran, S.; Sangaralingam, M.; Natarajan, J.; Umamaheswar, T., and Padmavathy, P., 2024. Ichthyofaunal diversity from longline catches in the Gulf of Mannar (GoM), southeast coast of India. Journal of Coastal Research, 40(1), 115–128. Charlotte (North Carolina), ISSN 0749-0208. The present study aimed to document t...

Manjunathan, M.; Ravikumar, T.; Chandran, S.; Neethiselvan, N.; Jawahar, P.; Arisekar, U., and Karthy, A., 2023. Catch efficiency and economic analysis for traditional fishing gear (troll lines) operated along the Coromandel and Gulf of Mannar coasts (southeast India). Journal of Coastal Research, 39(6), 1137–1145. Charlotte (North Carolina), ISSN...

The consideration of species interactions is growing among the fishery managers as a result of the overexploitation of many conventional fish stocks and the growing interest in obtaining new types of food from the sea.As a result, there has been a growing concern for management of the multispecies in the tropical waters by the Sustainable use of ma...

Epigenetics plays an energetic role in various fields of aquaculture production with its realizable value, especially under conducive environments that can be influenced, or normal distinction occurs. At this juncture, we discuss important features and mechanisms of epigenetic changes, including DNA methylation, histone modifications, chromatin rem...

The study has been conducted to investigate the length-weight, width-weight relationship and condition factor (K) of the freshwater mussel Parreysia favidens, from the river Burhi Gandak, Bihar India. A total 520 specimens were collected during July 2020 to June 2021. The observed length of P. favidens was ranged from 30 to 80 mm and weight ranged...

The present study was conducted to investigate the distribution and abundance of shellfish fauna from the river Burhi Gadak in North Bihar, India. The hydro-morphology of the river were studied and revealed that river width varied from 87.34±10.17 to 102.77±11.58 m and maximum river width was recorded in August 2020. The maximum depth was observed...

The length-weight relationship of freshwater pearl mussel, Lamellidens marginalis (Lamarck, 1819) were collected and analyzed during the sampling months July 2020 to June 2021 from the River Burhi Gandak. The collected mussel specimens (n = 995) were found to be in the 30 to 80 mm shell length, and 3.1 to 36.7 g shell weight. The results length-wei...

Among the four available seerfishes (Scomberomorus commerson, S. guttatus, S. lineolatus, and Acanthocybium solandri) along the Indian coast, S. commerson (27,334 tonnes) is a significant contributor to the seerfish landings. The trawlers from the Versova fish landing centre carried out fishing operations between 20°21′21.29ʺ N, 19°55′03.01ʺ N lati...

Effective management of inland capture fisheries requires information about size, growth and mortality parameters and catch per unit effort. The estimated slope b values for three cyprinids were found to be within the expected range and r2 showed high degree of correlation. The estimated growth parameters of Mirgal, Cirrhinus mrigala (Hamiltoon, 18...

The length-weight relationship (LWR) and relative condition factor for the two freshwater fish species, malabar sprat, Ehirava fluviatilis and quoy’s garfish, Hyporhamphus quoyi were estimated from the potamon zone of Thamirabarani river, Eastern Slope of Western Ghats, Southern Tamil Nadu, India. Fish samples were caught fortnightly using various...

The present study was conducted in Burhi Gandak River in Bihar to investigate the length-weight relationship and condition factor of four small cyprinids viz. Cirrhinus reba (Hamilton, 1822), Puntius sophore (Hamilton, 1822), Puntius terio (Hamilton, 1822) and Ambylpharyngodon mola (Hamilton, 1822). A total of 677 C. reba, 969 P. sophore, 873 P. te...

A study was conducted to assess the faunal diversity in Gorai creek of Mumbai, India during August 2019 to July 2020, revealed 90 species of fauna under 70 genera, 50 families, 29 orders, 6 classes and 3 phyla. The order-wise representation of identified fauna was found to be 7 ichthyofauna, 4 pelecypods, 6 gastropods, 2 cephalopods, 1 shrimp and 1...

The length‐weight relationships were estimated for three reef fish species caught in the Gulf of Mannar, India using experimental longlines. The longline fishing took place from December, 2019 to September, 2021 in fortnightly intervals, using longlines (2400 m, 2700 m and 3360 m each), equipped with each 600 various “J” type fishing hooks (straigh...

Salt is included in a variety of foodstuffs consumed by humans and since salt is contaminated with MPs causes health risk for humans. MPs can absorb pollutants that may transfer through organisms after the ingestion of MPs and affect the health of the human body by constantly taking the contaminated salt through food. Therefore, studies are needed...

The present study was conducted in Burhi Gandak River in Bihar to investigate the Length-weight relationship of Securicula gora (Hamilton, 1822). A total of 219 specimens were collected using traditional boats and locally made nets like Dhoni Jaal, Auptha Jaal, Chauni Jaal and modified traps. The collected samples ranged from 2.6 to 11.4 cm in the...

The present study reports length-weight relationship and biological aspects of Thryssa setirostris from Thoothukudi coastal waters during the period September 2016 to July 2017. T. setirostris is an important trawl by-catch landing at Thoothukudi. The largest size observed for T. setirostris was 14.5 cm total length, weighing 22.74 g. The value of...

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 present study compares the diversity and dominance in three undrainable village ponds of Central Gujarat, namely zero-fed, bag-fed and integrated cage cum pond (ICP) aquaculture systems. Qualitative and quantitative analysis of phytoplankton and zooplankton groups was carried out. The phytoplankton and zooplankton data were analysed using the d...

Floral resources are abundant across the globe as it forms a key role in an ecological pyramid and enriched with a bunch of medicinal properties. Historical statue reveals various plants and its materials were used for treatments of different ailments and injuries and also used as nutraceuticals in humans and animals and also used for pest control...

Marine turtles are long-living reptiles that have a complex lifestyle. They have their attendance all over the globe. The survival of turtles became pathetic due to various activities of human development exercises. Now, on the other hand, emerging diseases came to the platform. Disease indications are alarmingly high in the coastal belts where hum...

Five non reported new nesting grounds of Olive ridley turtles were recognized by beach surveying along the coast of southern Tamil Nadu covering 201.75 km. The survey indicates that the study areas have apposite beaches for turtle nesting however; the nesting incidences were declined due to predation and habitat alterations. The observed nest site...

Abstract: Marine turtles are calm, long-living reptiles with complicated lifestyle. They have their attendance all over the globe. The survival of turtles became so pathetic by various means of human development exercises. Now, on the other hand, emerging diseases came to the platform. Disease indications are alarming high in the coastal belts wher...

Length–weight relationships (LWRs) of six finfish species under two families of the order Perciformes collected from Pulicat lagoon (India) are presented in this study. The fish specimens were collected weekly from the catches of shore seine net (with a mesh size of 50mm at the main webbing and 10 mm at the cod end) operated in the lagoon at an ave...

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...

Sea turtles are slow growing, long lived and large reptiles that inhabit tropical and subtropical seas of the world. Several direct and indirect threats have led the turtle population decline. In recent years, conservative initiatives have been taken towards the turtle protection viz. development of guidelines, installations of TED (Turtle Excluder...

Varied marine and estuarine ecosystems of Tamil Nadu endowed with diverse fish fauna. A total of 1656 fish species under two classes, 40 orders, 191 families and 683 geranra reported from marine and estuarine waters of Tamil Nadu. In the checklist, 1075 fish species were primary marine water and remaining 581 species were diadromus. In total, 128 s...

The rRNA genes are one of the most conserved genes in the living world. The core function of the ribosome is basically the same across different groups of organisms. However, the actual sequence of the nucleotides in rRNAs does vary between species and this enables its use as a molecular marker for species identification. Prokaryotes have three dif...

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...

The present study depicts the importance of local community in conserving the fishery resources of Ramanathapuram district (9.4071° N, 78.7023° E) of Tamil Nadu. Ramanathapuram district with maximum number of fishing villages 178; maximum number of fish landing centre’s 90; 24% of active fisher’s population; largest number of fishing and fishery al...

Sea turtles are a large-shelled, oviparous animal, inhabiting tropical and subtropical seas throughout the world, except in polar-regions that plays a vital role in balancing the marine ecosystem. According to Hindu culture, they were called “Kurmavatara”, which were the incarnation of Lord Vishnu. Sea turtle populations in Tamil Nadu have been dep...

There are 54 estuarine wetlands known from Tamil Nadu of which 13 estuarine wetlands explored for fish biodiversity assessment. Systematic and updated checklist of estuarine fishes contains 330 species distributed under 205 genera, 95 families, 23 orders and two classes. The most diverse order was perciformes with 175 species, 100 genera and 43 fam...

In this communication, we documents the first record of the exotic South American suckermouth armoured catfishes (Loricariidae) of the genus Pterygoplichthys spp. from Manimuthar dam on river Tambaraparani in southern Tamil Nadu. Based on morphometric measurements and meristic counts, the specimen was identified as Pterygoplichthys pardalis (Castel...

Cyprinidherpesvirus-3 / Koi herpes virus (KHV) is an acute and systemic viral infection of Koi herpes virus disease. The virus is a representative family Alloherpesviridae infecting carps, having lot of specificity over common carp and few of their relatives. KHV is one of threatening viral disease of fishes, emerging as a obstacle for several coun...

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...

Present paper overviews the species composition, distribution, food and feeding, size at first maturity, spawning, fecundity, fishing season, mode of exploitation, population dynamics, production trend, utilization pattern, conservation and management of ribbonfish fisheries of India over last 25 years. In total ten species of ribbonfishes belongin...

The status of finfish and shellfish diversity and seasonal variation in their distribution and abundance were investigated in Vembanad Lake at Kumarakom Region of Kottayam in Kerala. In total 60 species of finfishes and shellfishes belonging to 13 orders, 31 families 43 genera were recorded from the study area.

Hygienic measures involve not only the activities from onboard fishing vessels to fish landing centre’s but also focus on infrastructure facilities at fish landing centre. The adoption of the same will be further extended to be the subsequent channels of marketing intermediaries until it reaches the consumer. Hence dissemination of proper technical...

Balaenoptera edeni has stranded dead in the bay near Thoothukudi Thermal power plant, Tamil Nadu on 8 th July 2016. Wrong guidance of the leader whale, attracted towards heat water, malfunction of internal organs, mechanical injuries by coral reefs, breeding purpose, in search of food, predator avoidance and migration were quoted as the reasons for...

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...

The Pokkali field are unique ecosystem of central Kerala with rich biodiversity and capacity to generate organic salt resistant paddy cum shrimp/fish. Salt tolerant strain of paddy cultivated in coastal areas for six months from May to October followed by Filtered shrimp or Prawn or fishes culture during November to April under traditional farming...

Thoothukudi, a maritime district of Tamil Nadu has a coastal length of 163.5 km with 21 fishing villages. Different types of fishing practices are being adopted by the fishermen of Thoothukudi district. Two fishing villages namely Therespuram and Kombuthurai were exclusively selected for the study. The selection was based on the type of the fishing...