[Show abstract][Hide abstract] ABSTRACT: In India, particularly in Sunderban of West Bengal, collection of prawn seeds is one of the major earning resources among prawn seed collectors. They are compelled to carry out a considerable amount of hard, manual, rigorous tasks in the river of the Sunderban area for collecting prawn seeds. They have to adopt some undesirable postures that may lead to the development of musculo skeletal disorder (MSD). The main aim of the present study is to investigate the prevalent postures adopted by the prawn seed collectors during individual prawn seed collection and to analyze the causation of discomfort feeling related with those postures. For this study, 21 male and 25 female prawn seed collectors were selected randomly and a detailed posture analysis was performed among them by means of OWAS method. It was observed that these workers worked continuously in awkward postures during certain prawn seed collection activity and consequently they suffered from discomfort feeling (pain) in different parts of the body.
[Show abstract][Hide abstract] ABSTRACT: The reproductive toxicity of fluoride was studied in male rats. Male rats were exposed to sodium fluoride at a dose 2 mg NaF/100 g body weight per day for 30 days. A significant decrease in body weight and testicular weight was observed. There were 16.6% reduction in metaphase index, significant decrease in DNA content and reduction in diameter of seminiferous tubules of the testis. Zinc and copper content of testis remains unaltered in treated group compared to control group. Histological studies show fewer luminal spermatozoa in the testicular section of treated group.