Journal of the Asiatic Society of Bangladesh, Science 2020-04-11T06:56:04+00:00 Professor Md. Shafiqur Rahman Open Journal Systems <p>Official Journal of the Asiatic Society of Bangladesh. Full text articles available.</p> Seed Germination in Six Anticancerous Plants of Bangladesh 2020-04-11T06:55:45+00:00 Nahid Sultana M Oliur Rahman Md Abul Hassan <p>Six medicinal plants, namely Boerhavia diffusa L., Calotropis procera (Ait.) R. Br., Jatropha gossypifolia L., Leonurus sibiricus L., Plumbago zeylanica L. and Ricinus communis L. of Bangladesh having anticancerous properties were investigated with a view to knowing their seed germination time, rate and pattern. The minimum days taken for seed germination in B. diffusa, C. procera, J. gossypifolia, L. sibiricus, P. zeylanica and R. communis were 70, 9, 24, 75, 11 and 14, respectively. The maximum time (130 days) required for germination was observed in Leonurus sibiricus. The highest germination rate (100%) was observed in Plumbago zeylanica, while the lowest rate (10%) was found in Ricinus communis. Epigeal type of germination was noted in all the species employed.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 151-159, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## New Records of the Goatfish, Upeneus Vittatus (Forsskal 1775) and Upeneus Supravittatus (Uiblein and Heemstra 2010) (Preciformes, Mullidae), From Saint Martin’s Island in the Bay of Bengal, Bangladesh 2020-04-11T06:55:49+00:00 Shilpi Saha Subrina Sehrin Abdullah Al Masud Kazi Ahsan Habib Anirban Sarker Mohammad Abdul Baki <p>Genus Upeneus distributed in Indo-Pacific, South Africa, north to southern Japan and south to New Caledonia. Although there is difficulty in identifying accurately goatfish solely on the basis of morphology, U. vittatus and U. supravittatus were confirmed by both using morphological characters and DNA barcoding cytochrome oxidase I subunit (COI) approach for the first time in St. Martin’s Island, Bay of Bengal, Bangladesh. Increased number of species of the genus Upeneus was found in Bangladesh from 3 to 5 and extended the distribution range.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 161-173, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Sanctuary Status on Diversity and Production of Fish and Shellfish in Sunamganj Dekar Haor of Bangladesh 2020-04-11T06:55:51+00:00 MS Islam Afzal Hossain <p>To ascertain the sanctuary status on diversity and production of fishes data were collected through primary and secondary sources. A total of 64 species belonged to 48 genera including fish (57), freshwater prawns (2), crabs (1) and mollusks (4) were recorded. Of 57 fish species, 52 were indigenous and rest 5 exotic, which belonged to 9 orders and 24 families. Cypriniformes was the most dominant order with 33.33% of total fishes followed by Perciformes (24.56%), Siluriformes (22.81%), Channiformes (7.03%) and both Osteoglossiformes and Clupeiformes (3.51%). Rest orders showed comparatively less percentage. Cyprinidae occupied the highest position (29.82%) in fish population among recorded families. By percent contribution small indigenous species showed the highest contribution (38.86%) with the highest amount (1936.50 kg/ha) in total fish production than other groups. Average fish production in sanctuaries obtained as 4983.60 kg/ha, which is manifolds higher than haor fish production (408 kg/ha) in Bangladesh. Fifteen (15) fish species were found as threatened and categorized them into critically endangered (1), endangered (8) and vulnerable (6). Results of the study reveal that sanctuary has positive impact on diversity and production of fishes in the haor. Therefore, it may be concluded that restoration of threatened species, diversity of flora and fauna, and overall fish production may be increased in wetlands by establishing sanctuary.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 175-186, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Histopathology and Molecular Characterization of Microsporidian Parasites in Cultured Shrimp Penaeus Monodon Fabricius 1798 of Bangladesh 2020-04-11T06:55:53+00:00 Md Munjur Hossain Nusrat Jahan Punom Md Mostavi Enan Eshik Mst Khadiza Begum Md Aminul Islam Bhuiyan Mohammad Shamsur Rahman <p>Black tiger shrimp (Penaeus monodon Fabricius 1798) cultured in Bangladesh was investigated for the presence of microsporidian parasite. Histological section of hepatopancreas showed a large number of microsporidian spores under light microscopy. Spores under scanning electron microscope appeared oval shapes. Histology of infected shrimps showed severe degeneration of hepatopancreatic tubules. Early and late stage of microsporidian parasites in hepatopancreatic tubules were also observed. DNA extracted from the hepatopancreas of shrimps were subjected to PCR amplification using primers targeting microsporidian SSU rRNA gene. The PCR amplified an expected product of ~328 bp and the sequences showed 81 - 82% identity with the Paranucleospora theridion reported from western Norway in 2008. Further screening of field samples was carried out using EHP-specific primers. DNA extracted from ten hepatopancreas samples of P. monodon were tested and none found to be positive for EHP (Enterocytozoon hepatopenaei). This is the first report for the identification of microsporidian parasites in cultured shrimp along the south-west region of Bangladesh.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 187-196, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Growth and Nutrient Composition of Indian Spinach Grown in Saline Soil Using Treated Water 2020-04-11T06:55:56+00:00 Farzana Yasmin Sayma Khanom Shahid Akhtar Hossain <p>A field experiment was conducted in Batiaghata Upazila of Khulna district to evaluate the growth and nutrient composition on Indian spinach by irrigating with different water sources. Water that has been used as treatment are saline- and treated water (water from a project called Managed Aquifer Recharge (MAR)). A field condition was also included (control). As per consumption pattern of Indian spinach, leaf and stem are mixed together. All the growth parameters of the crop were significantly improved for treated water except for the plant height. Carbohydrate, protein, fat, total dietary fiber (TDF) and energy increased (1.06, 2.76, 0.15, 3.21 g/100 g and 23.09 Kcal/100 g) with treated water than the control and saline water while ash content (2.04 g/100 g) decreased than saline water. pH, EC, Na, K, S, Fe and Mg of the soil decreased markedly by applying treated water and other nutrients present in soil also varied. From the study, it is revealed that the best alternate source of water for irrigation is MAR water which can improve plant nutrient content and uptake and soil nutrient status.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 197-207, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Incorporation of Sequence Stratigraphy in Gas Reservoir Correlation: A Case Study 2020-04-11T06:55:58+00:00 Afroza Parvin ASM Woobaidullah <p>The application of sequence stratigraphy to resolve the miscorrelation between different genetic units in reservoir characterization in a gas field of Surma Basin is dealt with. Interpretation of available seismic and wireline logs (gamma ray, resistivity, density and neutron porosity) give the sequence stratigraphic correlation of reservoir sands. The reservoirs geometry, its extent, seal architecture and trapping styles have been revealed better with this correlation. There is juxtaposition of two reservoir sands, namely A1 and A2. A1 is located at older highstand sand, whereas A2 is in the younger lowstand sand. Lithostratigraphically they might be same but sequences stratigraphy reveals that they are different and deposited at different times. Moreover, the concept reveals that lowstand sand has better reservoir quality than any highstand and transgressive sand.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 209-216, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Hydrogeochemical Properties Providing Links to Methanogenesis in Deep Aquifer of Bhola Island, Bangladesh 2020-04-11T06:55:59+00:00 Masuma Chowdhury Sarmin Sultana Md Atikul Islam Aziz Hasan Kazi Matin Uddin Ahmed <p>This paper compares the hydrogeochemical signatures between naturally flowing wells with methane (FWs) and non-flowing wells (require pumping) without methane (NFWs) by analyzing a total of 59 groundwater samples to find possible links for methane gas generation. Relatively higher concentration of HCO3 ⁻ indicates oxidation of organic matter (OM) for both the cases which is corroborated by the dominance of Na-Mg-HCO3 and Na- Mg-HCO3-Cl water type. Low concentrations of redox sensitive parameters i.e., NO3 ⁻, SO4 2⁻, Fe2+ and Mn2+ are indicating prevalence of extremely reducing condition and relatively lower concentrations of SO₄²⁻ in FWs suggest microbial sulphate reduction reaching final stage of redox ladder i.e., methanogenesis. Comparatively higher temperature and subsequent higher electrical conductivity (EC) in FWs possibly attributed by the chemical reactions of methane generation or vice versa. Low geothermal gradient, presence of OM and distribution of the FWs over a paleo valley in the deep confined aquifer zone refer to the existence of favourable environment for biogenic methane production rather than the upward migration or leakage of thermogenic gas from the reservoir below.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 217-228, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Effects of Wetting Media Cattle Blood, Rice Gruel and Water on the Yield and Amino Acid Composition of Tubificid Worms 2020-04-11T06:56:01+00:00 Mahmud Hasan Md Inja Mamun Haque Nafia Akter Mohammad Shamsur Rahman Afroza Sultana Eti <p>The effects of three wetting media (cattle blood, rice gruel and subsurface clean water) of the culture media ingredients (a mixture of mustard oil cake, soybean meal and mud) on the yield and amino acid composition of tubificid worms cultured on a pilot scale in a fish farm for 42 days were evaluated. The worm yields were in the order: cattle blood wetted media (683.68 ± 3.86 mg/cm2), rice gruel (615.63 ± 3.66 mg/cm2), water (584. 38 ± 1.41 mg/cm2). Lysine, arginine and leucine were the most prevalent of the eight essential amino acids in worms cultured in the media wetted in cattle blood medium. The results suggested that a mixture of 40% mustard oil cake, 30% soybean meal and 30% mud can be used for the commercial culture of tubificid worms as live fish food. The tubificid worms showed high level of amino acids suitable for fish that require a high content of dietary amino acids.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 229-239, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Effects of Drought Stress on Growth and Accumulation of Proline in Five Rice Varieties (Oryza Sativa L.) 2020-04-11T06:56:03+00:00 Shukanta Saha Hasna Hena Begum Shamima Nasrin <p>A pot experiment was conducted to study the effect of drought stress on growth and accumulation of proline in five rice varieties namely BRRI dhan-30, BRRI dhan-32, BRRI dhan-34, BRRI dhan-38 and BRRI dhan-56 and to characterize them on the basis of their behavior of drought tolerance. Drought stress caused the decrease of growth like root length, shoot length, root fresh weight, shoot fresh weight, root dry weight, shoot dry weight, the ratio of root-shoot length. Among the rice varieties, BRRI dhan-56 showed the lowest decrease of growth of plant. BRRI dhan-56 showed the least decrease of water content in both root and shoot. On the other hand, the accumulation of proline was increased in five rice varieties under stress. BRRI dhan-56 showed the highest (3.7- folds) increase in the accumulation of proline in leaf under stress. This study suggests that BRRI dhan-56 may possess drought tolerance characteristics while BRRI dhan-30, BRRI dhan-32, BRRI dhan-34 and BRRI dhan-38 may be drought sensitive based on their growth and proline accumulation behavior.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 241-247, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## Application of Repeated Average Method on Generalized Fuzzy Soft Matrix for Decision Making 2020-04-11T06:56:04+00:00 MK Hasan MM Rahman Abeda Sultana <p>Molodtsov introduced the theory of soft sets, which can be seen as a new mathematical approach to vagueness. Maji and his associates have further initiated several basic notions of soft set theory. They have also introduced the concept of fuzzy soft set, a more generalized concept, which is a combination of fuzzy set and soft set. In this paper, Repeated Average Method has been used in Generalized Fuzzy Soft Matrix for prompt decision making.</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 249-259, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement## A Comparative Study on the Selected Parameters of Water Quality of Dhanmondi, Ramna and Hatirjheel Lakes in Dhaka City 2020-04-11T06:55:47+00:00 Mahmuda Parvin Mafia Muzahed Ahmad Kamruzzaman Majumder <p>Abstract Not Available</p> <p>Asiat. Soc. Bangladesh, Sci. 45(2): 261-265, December 2019</p> 2019-12-28T00:00:00+00:00 ##submission.copyrightStatement##