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The current study was conducted to evaluate the socio-economic profile of fisher communities in Dengar beel under Melandah Upazila of Jamalpur district, Bangladesh. A total of 45 fishers were surveyed from November 2020 to April 2021. It was found that the family size of 53% of fishers was medium, consisting of 5-6 members. Most of the fisher communities belonged to the age group above 45 years old, represented by 100% Muslim. About 73% of fishers were less educated, 13% primary level, 7% secondary level, and 7% Secondary School Certificate passed and above, respectively. Most of the fishers (60%) have katcha houses with tin roofing, 7% have katcha house with straw roofs, 13% have semi- pucca houses and 20% have pucca houses. Around 93% of fishers used their own tube-well while only 7% used neighbours’ tube-well. All of the fisher household were connected with electricity supply. About 27% of fisher communities used katcha toilets, 46% used semi pucca toilets and 27% used pucca toilets. About 47% of fisher communities were dependent on village doctors, 33% got health service from Upazila health complex, 20% from MBBS doctors, and others. About 46% of fishers were engaged in fishing as their primary occupation while 27% in agriculture with fishing, 20% in daily labour with fishing and 7% in livestock rearing. About 33% of the fishers had low income, 40% had medium income and 27% had high income. The present study revealed that the fishers of Dengar Beel were mostly less educated, less privilege to attain modern technology-oriented training experience, less income and less awareness about sanitation and health facilities. So, provide soft loans to fishers, and strengthening people awareness has been might be helpful to improve the socio-economic status of fisher communities in Dengar Beel. Asian J. Med. Biol. Res. 2021, 7 (2), 164-173

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Effects of salt, chili and turmeric powder on the production of high quality dried fish products from Bombay duck (Harpodon nehereus) under open sun drying was investigated. Five different types of dried products (T1-T5) were produced and studied. Moisture content in T3 decreased more rapidly to below 16% within 28 hrs of drying compared to those treated with other treatments (temperature varied from 24.6°C to 34°C and relative humidity varied between  60% and 48%) . Drying process was very slow in control samples where it took 32 hrs for reaching the moisture level to 18.75%. Both turmeric and chili powders had strong repellency effect against insect infestation. Bombay duck treated with salt and herbal products were less infested by the blowfly whereas samples dried under control treatment were severely infested by blowfly.

An experiment on induced breeding of gang magur, Hemibagrus menoda (Hamilton, 1822) using Ovatide hormone was carried out at in the Field Laboratory Complex of Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh. This study consists of three treatments each with three replications. The objective of the experiment was to find out the effective dose of Ovatide hormone for induced breeding. A total number of 54 brood fish were used for the experiment among which 36 were male and 18 were female. Brood fish were kept in the ratio of 2♂:1♀ for breeding purpose. Female brood fish were injected at the rate of 7, 5, 3 ml Ovatide/kg body weight while the males were injected with 3, 2.5 and 1.5 ml Ovatide/kg body weight respectively in T1, T2, and T3 at the same time. The brood fish were injected with single dose of Ovatide in all treatments. Ovulation rates were 0%, 100%, 63%; fertilization rates were 0%, 97%, and 90%, and hatching rates were 0%, 95% and 76% in treatments T1, T2, and T3 respectively. Fertilized eggs were incubated for 21-22 h in all the treatments. Higher ovulation rate (100 %), fertilization rate (97%), hatching rate (95%) and survival rate (85%) were found in treatment T2. Therefore, the optimum dose of Ovatide hormone for induced breeding of H. menoda is 2.5 and 5 ml Ovatide/kg body weight of male and female brood fish, respectively. Res. Agric., Livest. Fish.8(1): 171-179, April 2021