Jewel Das

University of Chittagong · Institute of Marine Sciences

New marine industries that develop and grow in response to the changing demand for their products have the potential to exert pressure on fragile marine environments. These emerging industries can benefit local communities but equally can have negative environmental and socio-cultural impacts. The development of new and emerging industries, like de...

One of the most promising economic arenas in the coming decades is the ocean and there are currently numerous initiatives to the ‘blue economy’ discourse that revolves around the argument that small-scale fishers’ livelihoods require greater attention. To synthesize current scientific knowledge and address prevailing research gaps surrounding this...

The 3rd International Conference on MSP was held in Barcelona, Spain between November 22 and November 23, 2022. There were six wide topics covered in the six posters presented at this international conference. In this poster, the concept of "sustainable blue economy" was presented. A sustainable tourism management approach was incorporated into the...

Saint Martin’s Island (SMI), a declared marine protected area, is a unique and coral-dominated island in Bangladesh. This study explores, analyses, and describes SMI’s governability challenges based on primary and secondary data. Analyses of the governance framework and mechanism show that legal instruments are diffused among multiple sectors invol...

Human–wildlife cooperation occurs when humans and free-living wild animals actively coordinate their behavior to achieve a mutually beneficial outcome. These interactions provide important benefits to both the human and wildlife communities involved, have wider impacts on the local ecosystem, and represent a unique intersection of human and animal...

Human‐wildlife cooperation is a type of mutualism in which a human and a wild, free‐living animal actively coordinate their behaviour to achieve a common beneficial outcome. While other cooperative human‐animal interactions involving captive coercion or artificial selection (including domestication) have received extensive attention, we lack integr...

Coastal wetlands including salt marshes are among the most productive ecosystems on Earth. They are known for improving the quality of coastal water and provisioning coastal fisheries. However, this ecosystem is under potential threat due to urban coastal land reclamation, limited sediment supply, increased nutrient/eutrophication, and sea level ri...

The Halda River, locally known as a ‘magical fish bank’, is one of the unique aquatic features in Bangladesh in terms of providing ecological services and goods, economic returns, and societal contexts. Natural production of Indian major carps happens in this tidal river, which are collected and processed to hatch in the mud-made coop deploying ind...

Since 2014, the Government of Bangladesh has initiated discussions with stakeholders in order to adopt the concept of a ‘blue economy’ across relevant policies and strategies. By definition, the blue economy fosters the idea of sustainably deriving economic value from the untapped potential of marine resources using sustainable solutions and innova...

Unraveling planktonic community patterns and their linkage with the surrounding ecology is essential for aquatic resource management. Studies on the tintinnid microzooplankton in most of the marine waters of Malaysian South China Sea (SCS) are scarce though the trophic role of this community is well established. Thus, we aimed to investigate on spa...

This study was carried out to evaluate the population growth and egg ratio of Brachionus rotundiformis by feeding with three different diets, i.e., live microalgae Nannochloropsis sp., Baker's yeast, and powdered spirulina. A total of nine conical flasks of 1 L volume were divided into three treatment groups for determining the feeding performance...

Size frequency, length-weight relationships (LWRs), length-length relationships (LLRs), and relative condition factor (Kn) for an estuarine fish Bengal yellowfin seabream Acanthopagrus longispinnis (Valenciennes, 1830) from the Hatiya Island, Meghna River estuary was studied. Specimens were caught with the fixed purse net of two mesh sizes (0.2 to...

Tiger shrimp, Penaeus monodon is the most economically important penaeid shrimp in Bangladesh for both culture and capture fishery. This study reveals an analytical stock assessment of tiger shrimp in Bangladesh marine waters after three decades of the inclusive survey. A time series of annual Catch Per Unit Effort (CPUE) was derived from commercia...

Ship breaking is comparatively a sustainable business, particularly in the developing world, but the conditions where it is practiced is non-sustainable. Ship breaking is the process of dismantling ships and selling their parts primarily the steel - for scrap. The main impetus for breaking a ship down is that maintenance costs go up as a ship ages....

Coastal zones are the most dynamic feature of earth surface in which lithosphere, hydrosphere and atmosphere gets into contact with each other. Such dynamic process should be monitored with great importance as a large portion of the world’s population is living along the coastal zones. This paper focuses on delineation of the changes in the coastal...

The giant freshwater prawn (Macrobrachium rosenbergii), locally known as ‘Golda’, plays an important role in the economy of Bangladesh by earning valuable foreign exchange, generating employment and raising protein food production. The focus of this study is to assess major barriers of freshwater prawn culture entrepreneurship in South- Eastern Ban...

Maturation pattern including maturity stages, gonadosomatic index (GSI), ova diameter, fecundity and breeding season of commercially important black pomfret Parastromateus niger were studied from coastal waters of the Bay of Bengal, Bangladesh. Berried female fishes were collected fortnightly from the landing centres of Chittagong and Cox’s Bazar f...

The use of probiotics, as an ecofriendly prophylactic approach of multiple benefits to the target host, is much appreciated in aquaculture recently. This study examined the effects of commercial probiotics Sanolife® MIC, composed of Bacillus subtilis, B. licheniformis and B. pumilus, on the reproductive response of berried prawn (Macrobrachium rose...

The study was done to evaluate the effectiveness of two calci chemicals, lime (CaCO 3) and Zeolite (Biotuff) on water quality and survival rate of Labeo rohita fingerlings in earthen nursery ponds. A 28 days experiment was carried out in three ponds where two ponds were treated with CaCO 3 (T 2) and Biotuff (T 3), and one pond was maintained as con...

Owing to the problem of antibiotic resistance and subsequent reluctance of using antibiotics, probiotics use in aquaculture is becoming popular day by day. One experimental design with 150 days culture period of Macrobrachium rosenbergii was conducted with 3 treatments maintaining stocking density of 02/m2, 03/m2 and 04/m2 in T1, T2 and T3 respecti...

A project "Implement market development interventions to mainstream Women's Economic Empowerment (WEE) in the Farmed Fish and Vegetable Sectors" has been co-facilitating by Consiglieri Private Limited (CPL) and implemented by KATALYST since March, 2016. Under this project, fish culture was one of the encouraging activities to empower women. High ma...

Industrial fishing in Bangladesh is operated by wooden trawler (ice trawler) and steel made trawler known as freezer trawler. There is significant lack of valuable information on freezer trawler fishing data though it contributes a remarkable portion in national marine capture fisheries which is not negligible. This study aims to investigate the hi...

Women labour is considered as unpaid in Bangladesh though they are involved with many income generating activities. Present study was conducted at the six districts i.e. Narail, Khulna, Bagerhat, Mymensing, Chittagong and Barisal of Bangladesh and aimed to assess the women role in aquaculture along with their socio-economic status and access to the...

An enormous variety of water bodies throughout India and Bangladesh offering considerable potential for fish production and cultivation, but a general lack of capital, access to resources and knowledge means that many farmers are unable to provide all the commercial inputs required for intensive production methods. The paper reviews the status of c...

The giant freshwater prawn (Macrobrachium rosenbergii, de Man), locally known as 'Golda,' plays an important role in the economy of Bangladesh by earning valuable foreign exchange, generating employment and raising protein food production. The focus of this study is to assess major barriers of freshwater prawn culture entrepreneurship in Chittagong...

Proper management of Oreochromis niloticus brood is the prime importance for good quality fry production. The research was undertaken to determine the optimum parameters of Oreochromis niloticus broodstocks, the effects of various parameters on fecundity of broodstocks which were reared in floating hapa for three months. During the study period twe...

This study was conducted to identify a functioning fingerlings production and delivery system for a sustainable aquaculture development. Data were collected from 234 respondents randomly sampled from a population of 600 fish farmers. Results indicated that farmer-to-farmer was the major source of fingerlings production and distribution system. Alth...