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Articles by M.S. Ahmed
Total Records ( 2 ) for M.S. Ahmed
  M.S. Ahmed , A.S.M. Sharif and G.A. Latifa
  The anadromous shad Tenualosa ilisha (hilsa) is one of the most important species in coastal and estuarine waters, which contributes over 13% of the total fish production of Bangladesh. Age and growth of this valuable species from the River Meghna Bangladesh, were studied with transverse sections of otoliths. Otoliths opaque zones that formed every year were thought to be annual rings. Growth of this species was rapid during the first two years, reaching 37.0 cm in fork length. Most of the specimens were 2-4 years old and accounted for 90% in total. The maximum age recorded was 6 years with 52.5 cm in fork length. The von Bertalanffy growth parameters L and K for this species were 52.0 cm and 0.71 for year-1, respectively. The total, natural and fishing mortality were Z = 2.61 year-1, M = 1.22 year-1 and F = 1.39 year-1, respectively. The exploitation rate, E = 0.53, revealed a high fishing pressure on the stock. The estimated length-weight relationship for the combined sexes was found to be W = 0.0225*FL2.880. The study indicated that age and growth of T. ilisha can be determined using its sectioned otolith and process needs to be validated.
  E.A. Ogunsan , A.A. Seawright , D.O. Ehizibolo , H.M. Tukur , M.S. Ahmed , Y.G. Dashe and M.Y. Sugun
  It has become apparent that inflammation provoked by injury to renal epithelial cells serves to amplify kidney injury and dysfunction in vivo Compounds including the sesquiterpene ketones generally believed to cause kidney injury by direct tubular toxicity or crystal nephropathy have been considered in different renal studies. The aim of this study was to highlight the histotoxicity of Deisopropylngaione (DIN) in mice. Ninety male quackenbush mice weighing between 30 and 35 g b.wt. were divided into five groups of fifteen mice per group and received 70, 98, 137, 192 and 268 mg kg-1 DIN intraperitoneally, respectively. Haematoxylin erosin (H and E) and Von Kossa stained histology slides showed proximal tubular necrosis and hyaline cast formation. Deposition of calcium salt in residual necrotic tubular epithelium was on the increase with increase in dose rate. Besides the pulmonary lesions seen in mice following intoxication by DIN, the kidney lesions were consistent with previous studies of these compounds in mice and similar to mercuric chloride poisoning in sheep.
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