Ramya V L

• Researcher at Central Inland Fisheries Research Institute

Technological interventions in aquaculture have led to many fold increase in the aquaculture production of finfish and shellfish in several countries across the world. These technologies cover the fields of fish genetics, nutrition, health management, aquaculture system designs as well as the harvesting and marketing of the produce. However, a new...

The foodweb of the Karapuzha reservoir ecosystem was constructed using modelling software Ecopath with Ecosim. This reservoir has a high biomass of primary producers that can support a fairly large fish biomass. Ecotrophic efficiency values of zoobenthos show that these primary consumers are heavily consumed. Hence at higher trophic levels flows ar...

The health of an ecosystem is dependent on its flora and fauna; however, endemic species are essential for balancing the ecosystem's biota. Climate change, environment, gonad maturity, sex, food, and specimen wellness are some of the variables that might affect the fish length-weight association. The current study intends to determine the length-we...

Mystus cavasius, known as Gangetic mystus, is a freshwater indigenous catfish. The present study represents the first-ever complete mitochondrial genome sequencing of M. cavasius. The whole mitochondrial genome size is 16,554 bp (GenBank accession number OR018997). The mitogenome organization consists of total 37 genes, with 13 protein-coding genes...

Plankton forms an important component of the aquatic ecosystem and act as indicators of fish diversity, pollution levels and environmental disturbances. They form an important natural fish food resource and play a vital role in the trophic structure of the ecosystem. In the present study a systematic assessment of the community distribution and div...

India is the habitat of many freshwater fish species that make a significant contribution to endemism. However, the native species population is declining at a very fast rate due to pollution, habitat loss or degradation, new species introduction, hydrologic alterations, and overfishing. The minor carp, Labeo gonius, is one of the important fish sp...

Overfishing, pollution and human activities are making it harder to manage the fisheries. Recent developments in molecular technology and genome projects have produced a plethora of knowledge that may be used for genetic enhancement, decreasing resources and genetic variability. Assessment of genetic diversity and genetic structure is essential for...

The diversity and dynamics of phytoplankton are dependent on many environmental variables in an ecosystem. Their distribution, sudden surge in population, and the mere disappearance provide an indication of the ecology. Hence, the seasonal and spatial variations in phytoplankton diversity and abundance were investigated and correlated with abiotic...

Food Web Modelling is used as a method for an interpretation of ecological processes and for studying the impact of fishing on biodiversity. An overview of ecological dynamics, as well as the significance of interactions between functional groups was obtained by modelling Ecopath with Ecosim in Karapuzha reservoir, in India. The modelling exercise...

Eutrophication level in lakes and reservoirs depends on both internal and external phosphorus (P) load. Characterization of sediment P fractionation and identifying the P pollution sources are important for assessing the bio-availability of P and the dominant P source, for effectively controlling the water pollution. For determining the availabilit...

Invasive species exert a strong impact on the trophic structure and functioning of the ecosystem they occupy. A modeling software globally used to assess these impacts is Ecopath with Ecosim. This study measures the effects of two invasive species, African catfish Clarias gariepinus, in the food web of the Karapuzha reservoir ecosystem in India. Th...

Cage culture of Etroplus suratensis (Pearlspot) was carried out in Krishnagiri reservoir, India, a highly productive reservoir to analyze the feasibility of growing this species in freshwater cages and to investigate the effect on selected environmental parameters. Fish of average weight 5.98 ± 0.52 g were stocked at 10 ind. m3 in High-Density Poly...

Reservoirs are aquatic resources with the potential to increase India's fish production through inland fisheries. Thippagondanahalli is a medium-size reservoir on Arkavathy River, a tributary of the Cauvery. It is located in Bangalore rural district of Karnataka (12°58’24” to 12°96'49" N 77°20’33” to 77°35’63” E) and has a water surface area of 116...

The population structure of Barbodes carnaticus species was studied using conventional (based on body morphometrics and meristic) and image-based analysis (truss network system) methods. The study was carried out with four stocks, namely Karnataka (KA) and Tamil Nadu (TN) stocks from the River Cauvery, Kerala (KE) stock from the River Chalakudy and...

Larvae of the parasitic dioctophymatid nematode, Eustrongylides Jägerskiöld, 1909, infect various freshwater fishes. They prefer warm waters and are often found in water bodies that experience pollution and eutrophication. A total of 1180 samples of fish belonging to 12 species from Nagawara lake were examined for the occurrence of Eustrongylides l...

For natural ecosystems as well as human development, freshwater bodies like reservoirs are critically important. Krishnagiri reservoir, a moderately impacted tropical reservoir of India, is an important source of freshwater. However, eutrophication status due to anthropogenic activities is a major threat to this reservoir. This endeavour aimed to d...

The pattern of a fish assemblage of a large reservoir, Stanley (also called as Mettur) in Peninsular India was studied to derive various management protocols, specifically fish enhancement. The investigation was carried out in the spatial and temporal scale of the reservoir during 2017–2019. A total of 52 species belonging to 35 genera were recorde...

Freshwater has a significant role in determining the ecological environment, public health and socio-economic development. This study analyzed the spatio-temporal variation in surface water quality of the tropical reservoir Mettur, India, to determine whether its water is suitable for human consumption and aquatic ecosystem. Thus, 21 water quality...

The fisheries sector plays a vital role in the food, nutritional and livelihood security of people, especially in the rural regions of India. Reservoirs, the man made impoundments built on rivers/streams obstructing the surface flow, form an important resource for the fish production besides holding up economic growth through various cultural and e...

The protective efficacy of a DNA construct containing extra small virus antisense (XSVAS) gene of nodavirus encapsulated with chitosan nanoparticles (NPs) was investigated in giant freshwater prawn Macrobrachium rosenbergii (De Man, 1879). The delivery was carried out using oral and immersion methods. A plasmid concentration of 100 ng μL(-1) when c...

A controlled release delivery system helps to overcome the problem of short life of the leutinizing hormone releasing hormone (LHRH) in blood and avoids use of multiple injections to enhance reproductive efficacy. Chitosan- and chitosan-gold nanoconjugates of salmon LHRH of desired size, dispersity and zeta potential were synthesized and evaluated...

Developments in molecular biotechnology have led to rapid growth of new methods for diagnosing and controlling fish and shellfish diseases. Molecular techniques that are increasingly employed to diagnose fish and shellfish diseases include polymerase chain reaction (PCR) amplification of nucleic acids, restriction enzyme digestion, real-time PCR, D...

Nanotechnology has a tremendous potential to revolutionize agriculture and allied fields including aquaculture and fisheries. It can provide new tools for aquaculture, fish biotechnology, fish genetics, fish reproduction and aquatic health etc. Nanotechnology tools like nanomaterials, nanosensors, DNA nanovaccines, Gene delivery and smart drug deli...