Ajmal Hussan

Ajmal Hussan
Central Institute of Freshwater Aquaculture | CIFA · Aquaculture Production and Environment Division

M.F.Sc

About

35
Publications
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228
Citations

Publications

Publications (35)
Article
Full-text available
Mercury and cadmium are among the major heavy metal pollutants, contaminating aquatic ecosystems. These heavy metals were investigated in the present study for sub lethal toxicity on freshwater fish, Catla catla. The acute toxicity tests were conducted by static renewal bioassay method and 96 h LC50 value of mercury and cadmium to C. catla seed wer...
Article
Full-text available
East Kolkata Wetland is a classical example of harnessing natural resources of the wetland system for fisheries and agriculture through ingenuity of local communities with their traditional knowledge. It is the largest ensemble of sewage for fish ponds in one place in the world. But it is being lost due to the urban expansion without consideration...
Article
Full-text available
Rapid spread and population increase of suckermouth armoured catfishes belonging to the genus Pterygoplichthys (Loricariidae) in the East Kolkata Wetlands (EKW) in recent times is of increasing concern, because of the notable possibility that these non-native catfishes are adversely affecting fish germplasm and commercial fishery of this unique eco...
Article
Full-text available
Sailfin armoured catfish (Pterygoplichthys spp.), an alien invasive species of family Loricariidae has invaded extensively in wastewater-fed large aquaculture ponds (locally called 'bheries') of East Kolkata Wetlands (EKW), West Bengal, India. As there is no viable controlling method at present, commonly these fishes are removed by different physic...
Article
Full-text available
The problem of sewage disposal has received great attention worldwide. The raw sewage contains a variety of high inorganic and organic matters that affect natural water environment. To mitigate such problem, sewage may be recycled through aquaculture practice. Sewage recycling in aquaculture enhances water productivity through nutrients input. Prop...
Preprint
Hilsa, Tenualosa ilisha , is a commercially important high valued food fish in South Asian countries. Recently, much attention of this species has been paid for its conservation through captive culture due to its declining trend of population. Insufficient number of Hilsa seeds is the major bottleneck for its captive culture. This study aimed at de...
Article
Full-text available
The incidence of severe vertebral deformity was reported in the specimens of the Amazon sailfin catfish Pterygoplichthys pardalis (Castelnau, 1855) for the first time in India. Fish samples were collected on bimonthly basis during June 2019 to December 2020, from wastewater-fed large aquaculture impoundments (locally called ‘bheries’) of north west...
Article
Monocrotophos (MCP) insecticides are used worldwide for protecting crops against pests. It has been reported as a pollutant that possesses long-term effects on the freshwater ecosystem. In the ecosystem, fishes are more vulnerable to aquatic pollutants as they are in direct contact with the environment. The present study was carried out to evaluate...
Technical Report
Full-text available
Tenualosa ilisha popularly known as 'Hilsa' - a commercially important high valued food fish for its delicious taste, immense nutritional values for human health and high preference to the consumers across the South Asia, has received much attention for culture in confined waters and as a component under species diversification in aquaculture, sinc...
Article
Full-text available
Portable Fiberglass Reinforced Plastic (FRP) pabda hatchery consisting of three incubation pools and three rearing tanks having capacity to accommodate about 45,000 - 50,000 nos. fertilized eggs and to produce about 10,000 – 15,000 nos. of early fry of Ompok bimaculatus (pabda) in a single cycle was developed, established and operated at Kalyani Fi...
Article
Full-text available
In the present work, the salinity tolerance level of Indian major carp, Catla catla, genetically improved Labeo rohita (Jayanti rohu) and Cirrhinus mrigala were ascertained in terms of weight gain and mortality by exposing the fishes gradually to different levels of salinities for 45 days. Overall analysis of the result showed that, the severity of...
Article
Full-text available
Loricariid catfish species of the genus Pterygoplichthys, known in the aquarium trade as 'plecos' and 'algae eaters', have extensively invaded and proliferated in the East Kolkata Wetlands in West Bengal. Loricariids have capacity to alter the ecosystem and biodiversity of invasion sites, by physically altering the invaded habitats and by competing...
Chapter
Introductions or translocations of fishes (exotic fishes) for aquaculture purposes are age old practice and such introductions are a common occurrence even now. Though adverse effects of exotic fishes on native ecosystems and biodiversity is a serious reality, the benefits that mankind have received from introduction of these exotic species also ca...
Article
Full-text available
Live food organisms move in the water column and serve as a source of all the nutrients such as essential proteins, lipids, carbohydrates, vitamins, minerals, amino acids and fatty acids for larval stages of fish. Hence, they are commonly known as "living capsules of nutrition". Most of the fish and shell fish larvae in nature feed on these small p...
Article
Full-text available
The world's appetite for fish is growing steadily. Aquaculture has bridged that gap between the growing demand for fish and the almost stagnated wild fish catch, contributing at present nearly 47% of the world's total fish production of 171 million tonnes. Global aquaculture production has almost doubled between 2000 and 2016, it is estimated that,...
Preprint
Full-text available
The world's appetite for fish is growing steadily. Aquaculture has bridged that gap between the growing demand for fish and the almost stagnated wild fish catch, contributing at present nearly 47% of the world's total fish production of 171 million tonnes. Global aquaculture production has almost doubled between 2000 and 2016, it is estimated that,...
Chapter
Introduction of exotic fishes outside of their natural range to increase production or profitability increased rapidly since last century. In India also more than 350 exotic fishes were introduced legally or illegally mainly to boost aquaculture and aesthetics of aquarium. Though few exotic fishes contributed positively to the fisheries, particular...
Chapter
Aquaculture is an important economic activity and a flourishing sector in India with varied resources and vast potentials, growing at the pace of 4.5% annually, contributing to national income, employment generation and foreign exchange. Sundarbans, the world’s largest delta is a globally recognised ecologically sensitive area of West Bengal. This...
Article
Full-text available
Aquaculture supplies currently account for nearly 50 percent of the food fish that consumed globally (FAO, 2009) and are targeted to increase to 60 percent by 2020 (FAO, 2008). Considering that the capture fisheries component of fish supply has almost reached a saturation level of approximately 100 million tonnes per year; the growing food fish nee...
Article
Full-text available
Unauthorized introduction of South American suckermouth armoured catfishes (Loricariidae) of the genus Pterygoplichthys into the waste water bheries of East Kolkata Wetland, West Bengal has led to their noticeable naturalization in this ecosystem. A total of 439 specimens collected during this study were externally evaluated for affirming the speci...
Research
Full-text available
The state Mizoram witnessed good growth in aquaculture in recent years and has potential for improvement in production of fish with its endowed resources. The present paper is an attempt to analyze the status of aquaculture in the state of Mizoram and draw future strategies for improvement. The state has 5400 ha of water area under fish culture, an...
Article
Full-text available
The present study was conducted in the water bodies of East Kolkata Wetlands to generate a primary database on fish diversity of West Bengal, India. 71 indigenous fish species belonging to 27 families were identified. The family Cyprinidae represented the largest diversity accommodating 14 genera and 23 species. According to IUCN (International Uni...
Article
Full-text available
The present study was conducted to know the fish health management practices and adaptations prevailing in the dominant fish producing state of India. Primary data was collected from the small and marginal fish farmers of West Bengal by personal interview. Literature review was also done to collect secondary information. The study reveals that thou...
Article
Full-text available
It has been accepted across the globe that sustainable development is the only way to promote rational utilisation of resources and environmental protection without hampering economic growth. Integrated farming systems (IFS) are a viable option in this regard as waste is minimised, the by-product of one system becoming an input for others and thus,...
Chapter
Full-text available
Freshwater is indispensable for sustenance of life on earth, but is rapidly becoming a scarce resource. A centre on wastewater aquaculture was established during the 1970s in Rahara, Kolkata, which initiated research on recycling of sewage water for production of fish through nutrient recovery. Huge volume of sewage water has been treated through d...
Article
Full-text available
The present work was conducted to identify the cause of mass mortality taken place in farm reared Mystus gulio. More than two thousand advanced fry died overnight without any prior symptoms. Sixty specimens were necropsied for parasitological analysis. Skin, gill and intestine biopsies were prepared from each specimen following standard methods for...
Article
Full-text available
Pterygoplichthys spp. (known colloquially as ‘Sailfin catfish’) a native to South America, has invaded in East Kolkata Wetlands. Large quantities of these fishes were found dispersed in the pond embankment of East Kolkata Wetland during the visit. These fishes are known to function as an environmental stressor by interacting directly with native an...
Article
Full-text available
Bioremediation, that mainly utilizes the metabolic potentials of the microorganisms, is a natural process and therefore perceived as an acceptable option for treatment of contaminated environment. Naturally occurring microbial consortia have been utilized in bioremediation processes for removing contaminants from the environment, restoring contamin...
Article
Full-text available
Genetic characterization of Puntius sarana with mitochondrial Cytochrome c oxidase I (COI) genes revealed that P. Sarana has 91% similarity with P. fasciatus followed by P. denisonii, P. chelynoides and P. brevis with 87, 86 and 86% similarity, respectively. Phylogenetic analysis also showed that P. sarana is closely related to P. fasciatus among a...
Article
Full-text available
Maintaining a good pond fish culture environment is crucial for growing healthy fish, achieving satisfactory production and improving culture efficiency. High yield and profit in fish culture completely depends on proper management. But even under good management, several technical difficulties may arise during fish culture with a possibility of la...
Article
Full-text available
Wastewater treatment using waste stabilization ponds is very efficient and inexpensive but requirement of large areas of land is a major constraint. An alternative is direct dilution of wastewater and treatment using floating aquatic plants. This study was undertaken to assess the effect of diluted waste water on histology of gills. The results sho...

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Projects

Projects (10)
Project
Development of eDNA technique for sailfin catfishes and its application to detect the presence of sailfin catfishes in the wild. Also to assess the impact of sailfin catfishes on native economically important species and the native ecosystem.
Project
Efficient use of critical inputs towards sustainable aquaculture in the Moyna of Purba Midnapur, West Bengal through cluster approach