Floating raft culture of Gracilariopsis longissima for optimum biomass yield performance on the coast of Cox's Bazar, Bangladesh.

Seaweed cultivation is an eco-friendly method and attracts growing interest which needs a multi-criteria approach for its sustainability. In our present study, an economically significant red alga, Gracilariopsis longissima was cultured using a floating raft method on the coast of Cox's Bazar, Bangladesh for a period of 90 days from January to March 2022. The effects of different factors such as rope materials, culture type, raft shape, seeding intensity, harvesting phase and water depth on the biomass yield production of G. longissima were evaluated during a 90-day culture period. The biomass yield production and daily growth rate (DGR% day-1) were estimated to evaluate the possibilities of G. longissima cultures in a floating raft culture method. The range of biomass yield production (3.03-13.37 kg/m2) and DGR (3.08-4.72% day-1) is satisfactory in the floating raft culture method. Different water quality variables, the seasonal appearance of epiphytic algae and a cost-benefit analysis of seaweed culture were also performed. A total of eight epiphytic algal species were recorded, which resulted in major challenges for the growth of Gracilariopsis. The per month income for a seaweed farmer was estimated to be US$175.17 for 20 rafts. Our research concluded that farming of G. longissima in the floating raft method could be successfully performed from January to March on the coast of Cox's Bazar.

Knowledge, attitudes, and practices on food safety and hygiene of wet and dry fish handlers in Cox's Bazar, Bangladesh.

This study aimed to provide the very first description of the current scenario of knowledge, attitudes, and practices (KAP) concerning the food safety and hygiene subjects among wet fish handlers (WFHs) and dry fish handlers (DFHs) in Cox's Bazar, Bangladesh. Data collection was performed through the application of face-to-face interviews with 234 WFHs and 258 DFHs. The overall score of the correct answer assessed components was 55.95% and 57.05% in WFHs and DFHs, respectively. Among the different knowledge categories, both the respondents showed the highest positive response in the time, temperature, and quality control category and the lowest positive responses noted in the foodborne disease occurrence category. For attitudes, obtained results showed positive attitude with a mean score of 37.82 ± 4.28 and 35.58 ± 5.48 for WFHs and DFHs, respectively. The WFHs gained a mean score of 23.08 ± 4.24 for practices, and the score was 22.78 ± 4.47 in the case of DFHs. A positively significant correlation coefficient (r s) was observed among fish handlers' KAP of 0.326-0.584. Although the association between the three levels was acceptable, several food safety principles and hygiene practices remained unsatisfactory. These findings highlighted the need for rapid action to enhance food safety and hygiene KAP through an intensive training program to assure the production of safe fisheries products for human consumption.

Dataset describing the growth pattern, amino acid and fatty acid profile of five indigenous marine microalgae species of Bangladesh.

This paper presents the data on the growth pattern, amino acid, and fatty acid profile of five (5) selected indigenous marine microalgae (Chaetoceros sp.; Isochrysis sp.; Skeletonema sp.; Nannochloropsis sp.; and Tetraselmis sp.) of Bay of Bengal, Bangladesh. The microalgae species were cultured in f/2 Guillard's medium with maintaining standard physico-chemical parameters. The growth pattern was determined for all the microalgae as a prerequisite for further necessary experimental works. All the species were mass cultured using the same culture medium and harvested (centrifuging method), and dried (60 â„ƒ for 12 h) at their stationary phase. Finally, the amino acid and fatty acid analyses were performed. In many contexts, the amino acid and fatty acid data showed significant differences (p < 0.05) among these experimental species. However, by understanding these experimental species' nutritional profiles, one can easily choose the desired one that is most appropriate for their intended application.