Tilapia (Oreochromis niloticus) trait preferences by women and men farmers in Jessore and Mymensingh districts of Bangladesh

Mehar, Mamta; Mekkawy, Wagdy; McDougall, Cynthia; Benzie, John A. H.

doi:10.1016/j.aquaculture.2022.738799

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…The Nile tilapia (O. niloticus), on the other hand, is one of the major food fish species in the world, with over 140 countries involved in its culture and commercial trading and a global production of 4.4 million tons in 2020. , It can be found in most freshwater habitats, including rivers, lakes, streams, and canals. Thus, the Nile tilapia is an ideal model of aquatic organisms revealing the potential risk of environmental MPs/NPs from both ecotoxicity and food safety.…”

Section: Introductionmentioning

confidence: 99%

Nanoplastic Exposure at Environmental Concentrations Disrupts Hepatic Lipid Metabolism through Oxidative Stress Induction and Endoplasmic Reticulum Homeostasis Perturbation

Wang,

Mao,

Zhang

et al. 2023

Environ. Sci. Technol.

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In this study, we investigated the mechanism underlying the perturbation of hepatic lipid metabolism in response to micro/nanoplastic (MP/NP) exposure at environmentally relevant concentrations. Polystyrene (PS) MPs/NPs with different sizes (0.1, 0.5, and 5.0 μm) were studied for their effects on the homeostasis and function of Nile tilapia (Oreochromis niloticus) liver. Results showed that PS MPs/NPs were readily internalized and accumulated in various internal organs/tissues, especially in fish liver and muscle. Smaller-sized NPs caused more severe toxicity than larger MPs, including hepatic steatosis, inflammatory response, and disturbed liver function. Mechanistically, PS NPs with a particle size of 100 nm perturbed protein homeostasis in the endoplasmic reticulum (ER) by inhibiting the expression of chaperone proteins and genes involved in ER-associated degradation. This led to the activation of the PERK-eIF2α pathway, which caused dysfunction of hepatic lipid metabolism. Induction of oxidative stress and activation of the Nrf2/Keap1 pathway were also involved in the PS NP-induced hepatic lipid accumulation. These findings highlight the potential adverse effects of environmental MPs/NPs on aquatic organisms, raising concerns about their ecotoxicity and food safety.

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Section: Introductionmentioning

confidence: 99%

Nanoplastic Exposure at Environmental Concentrations Disrupts Hepatic Lipid Metabolism through Oxidative Stress Induction and Endoplasmic Reticulum Homeostasis Perturbation

Wang,

Mao,

Zhang

et al. 2023

Environ. Sci. Technol.

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“…Fish farmers in this region are not well aware of the effect of water quality deterioration and sediment chemistry which cause off-flavor problems, although Mymensingh and Jashore are the two major fish farming districts in Bangladesh. 15 Thus, measurements of water quality parameters and sediment chemistry are mandatory tasks for them. Recently, consumers claimed that fish produced in different parts of the country possesses an earthy-musty off-flavor.…”

Section: Introductionmentioning

confidence: 99%

Sources of off-flavor in high nutrient-load Nile tilapia (Oreochromis niloticus) ponds in north-central Bangladesh

Reza¹,

Razu²,

Haque³

et al. 2023

JAMB

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Recently, toxins and off-flavor compounds produced by phytoplankton in freshwater ponds have become a concern as it affects consumer acceptability and food safety. The purpose of this research was to investigate the relationship between phytoplankton abundance and water-sediment physicochemical parameters in high-nutrient-load Nile tilapia (Oreochromis niloticus) ponds from three sub-districts (upazila) in north-central Bangladesh. Water and sediment samples were collected from 9 randomly selected ponds of Sadar, Trishal, and Muktagachha upazila, and temperature, transparency, pH, phytoplankton concentration for water and pH, organic C and organic matter for sediment samples were determined. Water temperature and transparency were more or less similar across all the ponds, while pH varied significantly (p<0.05). Soil pH also varied significantly (p<0.05). The abundance of Bacillariophyceae, Chlorophyceae, and Euglenophyceae in pond water was almost equal but Cyanophyceae differed among the ponds with the highest in Muktagachha (5.22±2.30×104 cells/L) and the lowest in Trishal (4.84±0.740×104 cells/L). Correspondingly, Algal Genus Pollution Index (AGPI) was employed to study the water quality of Nile tilapia ponds, and it revealed that ponds in Muktagaccha had ‘probable high organic pollution’ compared to ponds in the other two locations. Five cyanobacteria genera were identified viz., Anabaena, Aphanizominon, Gomphosphaeria, Mycrocystis and Osoillatoria where Anabaena showed a strong positive correlation with water temperature and pH. The significantly higher abundance of cyanobacteria in Muktagachha is possibly linked to the favorable water temperature and pH and indicates a higher risk of off-flavor creation in the Nile tilapia ponds from this upazila. It is, therefore suggested that the right management measures must be put in place to control the cyanobacteria to ensure the profitability of fish farming.

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A gendered conjoint analysis of tilapia trait preference rankings among urban consumers in Zambia: Evidence to inform genetic improvement programs

Murphy,

Cole,

Kaminski

et al. 2024

Aquaculture

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Tilapia (Oreochromis niloticus) trait preferences by women and men farmers in Jessore and Mymensingh districts of Bangladesh

Cited by 4 publications

References 14 publications

Nanoplastic Exposure at Environmental Concentrations Disrupts Hepatic Lipid Metabolism through Oxidative Stress Induction and Endoplasmic Reticulum Homeostasis Perturbation

Nanoplastic Exposure at Environmental Concentrations Disrupts Hepatic Lipid Metabolism through Oxidative Stress Induction and Endoplasmic Reticulum Homeostasis Perturbation

Sources of off-flavor in high nutrient-load Nile tilapia (Oreochromis niloticus) ponds in north-central Bangladesh

A gendered conjoint analysis of tilapia trait preference rankings among urban consumers in Zambia: Evidence to inform genetic improvement programs

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