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Socio-economic Fishermen Fishing TeknafStudy was conducted on the socio-economic conditions of the fishermen in Teknaf to evaluate fishermen livelihood and social status for a period of one year from March, 2014 to April, 2015. Data were collected in terms of income generation, age distribution, housing, literacy rate, health and sanitation facilities of the fishermen. Fishing was regarded as the major source of income of the traditional fishermen but occasionally they undertook a variety of non-fishery related activities, which constituted a substantial part of their annual income. Among 105 fishermen interviewed, 59.25% were below 30 years, 29.62% were between 30 and 39 years, and the remaining 11.11% were more than 40 years old, and their literacy level was 62.96% illiterate, 18.51% can write their names, 14.81% had received education up to primary level and 3.70% had received secondary education. Income distribution showed significant inequality between marginal and non-marginal fishermen from group fishing. The national and local NGO like BRAC, ASA provided credit only to the organized poor members to purchase fishing gears and boats but the amount of credit provided by the NGOs was insufficient and could not commensurate to the poor people's actual need. The present study revealed that sanitary conditions of the fishermen were very poor that 25% fishermen have semi-constructed and 10% of the fishermen had no sanitary facilities. Most of the fishermen (65%) have un-constructed sanitary facilities. The present study suggested that there is a clear need to legalize fishing profession and their settlement as well as traditional fishing communities should be given priority in getting necessary supports from all concerns. Ghosh et. al Socio-economic conditions of the fishermen in TeknafRes.

Aims: The purpose of this study was to evaluate whether there are any significant toxic effects of the widely exposed metals on different organs (gill, liver, kidney, and muscle) of some commercially important marine fish species (Herpodon nehereus, Pampus chinensis and Hilsa ilisha). Study Design: The collection of the samples was done from January to March 2018 from Bay of Bengal near Chattogram city of Bangladesh. The study is based on randomly collected samples from the intended sampling sites (Randomized Block Design) to ensure the evenness and unbiases of the collected samples. Methodology: Analyses were performed for metals such as arsenic (As), lead (Pb) and chromium (Cr) using Atomic Absorption Spectrophotometer (AAS). During each month, five individuals each with three replications from the three targeted species were collected, with a total of 135 (45*3) fishes in the study period. Results: The concentrations of the metals found in the fishes varied in the following ranges: As: 0.029-0.071 ppm, Pb: 0.008-0.083 ppm and Cr: 0.0001-0.03 ppm. The obtained result revealed the highest concentrations of all three metals were recorded in H.nehereus fish. The organ wise lead concentration was recorded highest in kidneys and gills of examined fishes with significant variation in muscles and liver. The scenario depicted quite differently in case of chromium where concentration in gills was found to be the highest with insignificant variation in accumulation in other three organs. In case of Arsenic, kidneys and livers were the most exposed two organs in comparison to significant exposure to muscles and gills. The obtained values of arsenic accumulation were considered critical for human consumption as it was higher than the recommended values stated by WHO and FAO; but the concentration of lead and chromium were found to be safe for human consumption. The values recorded for lead were increasingly approached to the safety values. Conclusion: So, crucial steps should be taken regarding safety and environmentally friendly discharge of arsenic and lead; high levels of pollution will not only affect aquatic life but will also invite socio-economic disasters.

Sumithion Intestine Zebra fish Histology PesticideOrganophosphorous pesticide sumithion, the O, O Dimethyl O-(3-methyl-4-nitrophenyl), is a widely used pesticide in agricultural land and in aquaculture to control some harmful pests. A study was conducted in laboratory condition with aquaria (36 inch × 10 inch × 12 inch) to evaluate the effects of sumithion on histo-architecture of intestine in zebrafish (Danio rerio).The experiment was carried out with three treatments (T1: 0.5 ppm, T2: 1.0 ppm, T3: 2.0 ppm) and a control (T0: 0ppm), each having three replications. Zebra fishes (Danio rerio) (4±1cm and 0.9±0.2g) were stocked for the experiment and sacrificed after 7 days of exposure of sumithion. During the study period, the temperature was almost constant (21-22 O C) but dissolved oxygen, pH and total alkalinity values were tended to decrease with the increase in concentrations of test chemicals. The histo-architectural changes in intestine suggested that the intestinal epithelial cells, lumen, villi and intestinal folding were varied significantly (P<0.05) in treatment groups rather than the control groups (T0). Disappeared mucosa (DM) along with abnormal lumen (AL) were found in case of T1, while destructed intestinal villi (DV), sloughing of superficial epidermal cells (SEC) and uneven intestinal folding (UF) were found in T2 and T3. The obtained result supports the toxic potentiality of sumithion. Therefore, the use of sumithion must be evaluated carefully in agriculture and aquaculture. Ahmed et. al Histo-architectural changes of intestinal morphology in Zebra fishRes.

This study explores human death, injury and overall casualties as a result of ongoing extreme lightning events in Bangladesh. Especially the month of May starting from 2010 to mid-2017 were taken under consideration for this study where, a total of 1811 lightning casualties composed of 339 fatalities and 273 injuries are identified. Spatial and geographic aspects of division wise lightning events are evaluated with the help of ArcGIS. The annual average number of fatality is 227 for the whole country whereas, 43 fatalities and 35 injuries over the entire study period was found in May only. The rate of lightning fatality is high in Pirganj of Thakurgaon, Nikli of Kishoreganj, Shibganj of Chapainawabganj, Nawabganj of Dinajpur, Ullapara of Sirajganj, Bagmara of Rajshahi, Bhuapur of Tangail, and Tarail of Kishoreganj. The majority of lightning-related fatalities occurred to males. Maximum people affected by lightning strike during working outside like in field, hoar, road side etc. Farming is the major activity during lightning fatalities. One seventh of death people are affected during stay in indoor like-house, mosque etc. The rural people affected by lightning fatalities accounted 93%. The analysis shows that the highest lightning vulnerable zone is Sunamganj, Sylhet.J. Environ. Sci. & Natural Resources, 10(2): 11-18 2017