Journal of the Asiatic Society of Bangladesh, Science Official Journal of the Asiatic Society of Bangladesh. Full text articles available. Asiatic Society of Bangladesh en-US Journal of the Asiatic Society of Bangladesh, Science 1016-6947 Assessment of four different media for the mass culture of Ceriodaphnia reticulata (Jurine) as a live fish feed <p>Experiments on the mass culture of <em>Ceriodaphnia reticulata </em>(Jurine) were carried out in aquarium water for 54 days with different media like cowdung (1.5g/L), pulse bran water (50g/L), poultry manure (0.45g/L) and snail faeces (faeces of six apple snails). All the media were fertilized by 50-100% of the initial amount of feed in every 7 days. About 100 individuals of <em>C. reticulata </em>were inoculated as starter in 50 litres of water (2 individuals/ml).The temperature of the media ranged from 24-30<sup>o</sup>C during study period. p<sup>H</sup> of the culture media varied i.e., 9.1 ± 0.40 in cowdung; 8.72 ± 0.73 in pulse bran water, 8.82 ± 0.72 in poultry manure and 7.5 ± 0.55 in snail faeces. The highest average population of <em>C. reticulata </em>was observed in cowdung (8.56 ± 4.11individuals/ml), moderate in poultry manure (4.21 ± 2.97 individuals/ml) and snail faeces (2.52 ± 3.01individuals/ml). The lowest growth of <em>C. reticulata </em>was recorded in pulse water (0.37 ± 0.69 individuals/ml). The culture media with cowdung as well as poultry manure and snail faeces were found to be useful for artificial mass production of <em>C. reticulata</em>.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 129-138, December 2013</p> M Begum P Noor KN Ahmed C Mohanta N Sultana MR Hasan MN Uddin ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 129 138 10.3329/jasbs.v39i2.17849 Phytochemical screening of some antidysenteric medicinal plants of Bangladesh <p>In this report, 40 antidysenteric medicinal plant species representing 24 families were considered for qualitative assessment of their secondary metabolites like alkaloids, flavonoids, glycosides, sterols and tannins. Alkaloids were present in all plant species, though in different degrees and the relative effectiveness of Dragendorffs’ reagent was better than others. Distribution of flavonoids, glycosides, sterols and tannins was sporadic in different plant species except <em>A. cepa, A. marmelos, I. coccinea, M. indica, S. dulcis </em>and <em>Z. officinale</em>, where all these metabolites were present. Abundance and mode of distribution of secondary metabolites in different test plants and their organs were discussed.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 139-146, December 2013</p> ANM Alamgir Kaniz Fatema ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 139 146 10.3329/jasbs.v39i2.17850 Angiosperm flora of Manikgonj Sadar upazila, Bangladesh <p>Angioperm flora of Manikgonj Sadar Upazila has been partially inventoried. A total of 207 species under 72 families and 174 genera has been recorded. Among those, the division Magnoliopsida represents 147 species belonging to 56 families and 127 genera, and the division Liliopsida represents 60 species belonging to 16 families and 47 genera.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 147-166, December 2013</p> Kanika Sarker Md Rafiqul Islam Mohammad Zashim Uddin Md Abul Hassan ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 147 166 10.3329/jasbs.v39i2.17851 Growth of Cyanobacteria in saline soil amended with NP fertilizers <p>Assessment of cyanobacterial population in saline soil amended with three rates of each of N (0, 50, 100 kg ha<sup>-1</sup>) and P (0, 25, 50 kg ha<sup>-1</sup>) fertilizers in a factorial combination showed a significant variation during growth of rice. Quantitatively the population of cyanobacteria ranged from 26.90 to 70.83 × 10<sup>4</sup> g-1, 32.07 to 82.03 × 10<sup>4</sup> g<sup>-1</sup> and 31.03 to 74.47 × 10<sup>4</sup> g<sup>-1</sup> soil at 30, 60 and 90 days of transplantation of rice seedlings respectively. The highest and lowest values were encountered in N<sub>50</sub>P<sub>50</sub> and N<sub>100</sub>P<sub>0</sub> treatments respectively irrespective of the sampling intervals. Addition of P accentuated the proliferation of cyanobacteria while that of N inhibited their abundance significantly with increasing level of the applied fertilizers. Joint contribution of P and N stimulated significantly better growth of cyanobacteria.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 167-171, December 2013</p> ZN Tahmida Begum R Mandal Farzana Binta Amin ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 167 171 10.3329/jasbs.v39i2.17852 Limnological status of Trimohini Beel of Rajshahi, Bangladesh <p>A total of 38 zooplankton genera and 26 physico-chemical variables were recorded in Trimohini <em>Beel</em>. This <em>beel </em>marked as a medium level of polluted wetland based on the values of the redox characteristics i.e. pH, DO, BOD, COD, Eh and rH<sub>2</sub>, chlorides, nitrites, ammonium, phosphate values etc. and on the presence of some zooplankton as indicator of pollution. A large number of inland fresh water non-culturable fishes and other aquatic biota of the Trimohini <em>Beel </em>may be eliminated in future due to mixing of continuous chemicals from agriculture fields. It is necessary to conserve the ecosystem of Trimohini <em>Beel </em>for the fresh water non-culturable fishes and other aquatic biota.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 173-182, December 2013</p> Md Azizul Islam Abdullah Harun Chowdhury ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 173 182 10.3329/jasbs.v39i2.17854 Electrosynthesis of Cu / ZnO nanocomposite electrode on ITO electrode and its application in oxidation of ascorbic acid and glucose <p>In the present study Cu nanoparticles (NPs), ZnO nanorods have been deposited on indium tin oxide (ITO) electrode and thereby Cu-NPs /ZnO / ITO composite film electrode has been prepared. The prepared nanostructures have been characterized by using scanning electron microscope (SEM). The shape of the electrochemically deposited ZnO follow rod like structure on ITO electrode, Cu–NPs follow irregular spherical shape when electrodeposited on ITO electrode. Oxidation of ascorbic acid on bare ITO electrode is favorable than that of ZnO modified ITO electrode but Cu-NPs/ ZnO composite electrode had high sensitivity and stability and showed higher catalytic current for glucose oxidation.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 183-190, December 2013</p> M Emran Quayum Bablu Biswas Md Khairul Hassan Bhuiyan ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 183 190 10.3329/jasbs.v39i2.17855 Antiaging, antioxidant flavonoids; synthesis, antimicrobial screening as well as 3D QSAR CoMFA models for the prediction of biological activity <p>Flavonoids, polyphenolic heteronuclear compounds which are naturally occurring antioxidants are widely used as antiaging substances. Synthesis of new naturally occuring organic compounds with basic skeleton of chalcones, flavones and oxygenated flavones and their antimicrobial activity were reported by this research group for long. Presently comparative molecular field analysis (CoMFA) implemented in Sybyl 7.3 was conducted on a series of substituted flavones. CoMFA is an effective computer implemented 3D QSAR technique deriving a correlation between set of the biologically active molecules and their 3D shape, electrostatic and hydrogen bonding characteristics employing both interactive graphics and statistical techniques. Evaluation of 38 compounds were served to establish the models with grid spacing (2.0 Å). CoMFA produced best predictive model for compound 1C (2 ? Phenyl ? 1,4 ? benzopyrone) and compound 2C (5 ? Fluoro ? 3?? hydroxy flavone ) among all. Model for compound 2C [r<sup>2</sup> conv (no-validation) = 0.956, SEE = 0.211, F value = 111.054) is better than that of compound 1C [r<sup>2</sup> conv (no-validation) = 0.955, SEE = 0.212, F value = 110.261) but comparing superimposed model 1C being suggested as the best predictive model. 3D contour maps were generated to correlate the biological activities with the chemical structures of the examined compounds and for further design.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 191-199, December 2013</p> Bilkis Jahan Lumbiny Zhang Hui M Azizul Islam ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 191 199 10.3329/jasbs.v39i2.17856 Performances of 2 phenoxyethanol and quinaldine with oxygen in the live truck transportation of rohu fingerlings <p>The effectiveness of 2 phenoxyethanol (2 PE), quinaldine (2-methyl quinoline), benzocaine (ethyl 4 aminobenzoate) and tertiary amyl alcohol (TAA) was tested to determine their optimal dosages for rapid induction and recovery in the first experiment, while the second experiment evaluated the effects of low dose quinaldine (175 ?l/L) and 2 PE (250 ?l/L) with oxygen for 1, 3, 6 and 9 h on the mortality and water qualities at 400 g/L rohu Labeo rohita fingerlings in a truck transport simulation. Optimum dosages of 2 PE (250 ?l/L), quinaldine (175 ?l/L), benzocaine (40 mg/L) and TAA (1.5 ml/L) were found to have rapid (within 6 min) immobilization and recovery. Very low level of immediate and delayed mortality (&lt;1%) was found across all three transport methods. While 2 PE had dissolved oxygen (DO) concentration above 13 mg/L, quinaldine had lower level. Results suggest that rohu fingerlings at 400 g/L can be transported for 9 hours with oxygen with or without sedatives.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 201-209, December 2013</p> Mahmud Hasan Nadia Islam Pinky Md Alamgir Kabir Salim Ahmed SM Mahbubur Rashid ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 201 209 10.3329/jasbs.v39i2.17858 Cognitive emotion regulation in children as related to their parenting style, family type and gender <p>This study aimed to investigate whether cognitive emotion regulation in children varies with parenting style, family type and gender. Toward this end, cognitive emotion regulation and perceived parenting style of 206 school children were measured. Standard regression analyses of data revealed that the models were significant and explained 17.3% of the variance in adaptive emotion regulation (Adjusted R²=0.173; F=9.579, p&lt;.001), and 7.1% of the variance in less adaptive emotion regulation (Adjusted R²=.071, F=4.135, p=.001). Results showed that children’s cognitive emotion regulation is functionally associated with parenting style, but not with family type and their gender. Amongst the three types of parenting, authoritative parenting was the strongest predictor of overall adaptive emotion regulation while authoritarian parenting was the strongest predictor of overall less adaptive emotion regulation. Permissive parenting has impact on neither adaptive nor less adaptive emotion regulation. The findings have implications for parents, caregivers, child psychologists and other professionals working with children/ adolescents.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 211-220, December 2013</p> AKM Rezaul Karim Tania Sharafat Abu Yusuf Mahmud ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 211 220 10.3329/jasbs.v39i2.17860 Accumulation and histopathological effects of arsenic in tissues of shingi fish (Stinging Catfish) Heteropneustes fossilis (Bloch, 1794) <p>A 60-day experiment was conducted to compare the accumulation and toxicological effects of arsenic in muscle, intestine and liver of shingi fish, <em>H. fossilis </em>(Bloch) after exposure to two concentrations (7.0 and 20.0 ppm) of arsenic trioxide. The highest/maximum level of accumulation of arsenic was observed in the liver whereas the lowest level of arsenic was found to accumulate in the muscle tissues at the end of exposure period. It is apparent from the study that the damage of the liver of test fish due to 15 days exposed period was less compared to the damage caused by 60 days exposure periods. The intensity of histological alterations was observed to increase gradually with the arsenic concentration and the exposure time.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 221-230, December 2013</p> Aleya Begum Ahmed Ismail Mustafa Md Nurul Amin Nasrin Banu Tasrina Rabia Chowdhury ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 221 230 10.3329/jasbs.v39i2.17861 Copper, Cadmium, Chromium and lead bioaccumulation in Stinging Catfish, Heteropneustes fossilis (Bloch) and freshwater mussel, Lamellidens corrianus Lia and to compare their concentration in sediments and water of Turag river <p>The present study was carried out to determine the level of bioaccumulation of some heavy metals namely Copper (Cu), Cadmium (Cd), Chromium (Cr) and Lead (Pb) in freshwater fish Stinging catfish (Heteropneustes fossilis Bloch, 1794) and freshwater Mussel (Lamellidens corrianus Lia, 1834) collected from Turag river during the months of October to December 2010. The accumulation levels were then compared with the concentration levels of sediments and water of the same river. In H. fossilis the average bioaccumulations were Cu 13.27 ± 2.47 mg/kg ; Cd 0.215 ± 0.208 mg/kg ; Cr 1.46 ± 0.431 mg/kg and Pb 0 mg/kg in dry weight while Cu 31.90 ± 6.202 mg/kg ; Cd 0.182 ± 0.025 mg/kg ; Cr 0.0367 ± 0.039 mg/kg and Pb 3.865 ± 1.041 mg/kg in dry weight of L. corrianus. Average concentration of metals in sediments of Turag river were Cu 54.95 ± 9.218 mg/kg ; Cd 0.05 ± 0.011 mg/kg ; Cr 5.575 ± 0.608 mg/kg and Pb 34.89 ± 5.554 mg/kg in dry weight and in water these levels were Cu 0.0253 ± 0.024 ppm ; Cd 0.0012 ± 0.001 ppm ; Cr 0.2335 ± 0.044 ppm and Pb 0.1169 ± 0.041 ppm. The bioaccumulation level of heavy metals in Turag river were higher than the FAO approved standard level.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 231-238, December 2013</p> Suman Mandal Abu Tweb Abu Ahmed ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 231 238 10.3329/jasbs.v39i2.17862 Occurrence of intestinal parasites among the teachers, students and staffs of Dhaka University <p>The present study was conducted to find out the incidence of the intestinal parasites and their prevalence among the teachers, students and staffs of University of Dhaka, Bangladesh. The study revealed that the prevalence of intestinal protozoa and helminth parasites are common among the outdoor patients of University of Dhaka. A total of 350 stool samples was examined in the Pathology department of Medical Center of University of Dhaka from June 2009 to May 2010, four species of intestinal parasites were identified of which two species were protozoa <em>(Entamoeba histolytica </em>and <em>Giardia intestinalis) </em>and two species were nematodes <em>(Ascaris lumbricoides </em>and <em>Trichuris trichiura). </em>The overall prevalence of infestation was 23.14% where <em>Entamoeba histolytica, Giardia intestinalis, Ascaris lumbricoides </em>and <em>Trichuris trichiura </em>were found as 4.86%, 3.71%, 11.14% and 3.43% respectively. Highest prevalence was recorded in <em>Ascaris lumbricoides </em>(11.14%) and the seasonal pattern showed that highest (30%) prevalence occurred in rainy season and lowest (17.19%) in winter season. The prevalence of intestinal parasites was higher in female (30.56%) than in male (22.29%).</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 239-246, December 2013</p> Hamida Khanum Farzana Rahman Rimi Farhana Zaman ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 239 246 10.3329/jasbs.v39i2.17863 High temperature treatment on the eggs of the mosquito, Culex quinquefasciatus Say and its effects on the subsequent stages developed therefrom <p>The eggs of Culex quinquefasciatus Say (Diptera: Culicidae) were exposed to 40oC for different exposure periods (viz. half an hour, one, two and four hours) and control (room temperature, 28±6oC); the percentage of egg hatching ranged from 74.14 to 96.33 (F=215.593, P&lt;0.05), larval mortalities were from 24.52 to 0.00% (F=73.287, P&lt;0.05), pupal mortalities ranged from 10.2 to16.71% (F=34.056, P&lt;0.05), mean larval periods ranged from 127.9 to 155.3 hours (F=124.002, P&lt;0.05), mean pupal periods ranged from 30.5 to 36.1 hours (F=10.531, P&lt;0.05), lengths of 2nd instar ranged from 3.82 to 4.67 mm (F=16.50, P&lt;0.05), lengths of 3<sup>rd</sup> instar ranged from 6.195 to 7.195 mm (F=7.558, P&lt;0.05), lengths of 4<sup>th</sup> instar ranged from 7.395 to 8.025 mm (F=3.961, P&lt;0.05), mean diameter of the head capsule of 1<sup>st</sup> instar larvae was 0.316 to 0.384 mm (F=8.308, P&lt;0.05), that of 2<sup>nd</sup> instar larvae was 0.395 to 0.468 mm (F=4.953, P&lt;0.05), that of 3<sup>rd</sup> instar larvae was 0.652 to 0.71 mm (F=2.629, P&gt;0.05), that of 4<sup>th</sup> instar larvae was 0.806 to 0.91 mm (F= 13.871, P&lt;0.05), length of the cephalothorax of pupae ranged from 1.862 to 2.062 mm (F=0.662, P&gt;0.05), body length of male adults ranged from 3.41 to 3.58 mm (F=0.59, P&gt;0.05), and that of female ranged from 3.75 to 4.09 mm (F=1.98, P&gt;0.05), mean egg- rafts laid per female ranged from 1.4 to 2.0 and mean numbers of eggs per raft were 230 to 260.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 247-257, December 2013</p> Humayun Reza Khan Md Mosarraf Hossain ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 247 257 10.3329/jasbs.v39i2.17864 Breeding biology of guppy fish, Poecilia reticulata (Peters, 1859) in the laboratory <p>The breeding biology of guppy fish, Poecilia reticulata (Cyprinodontiformes: Poiciliidae) was studied during March 2008 to May 2009 in ‘Zoological garden laboratory’, Curzon Hall campus, Dhaka University. Guppy bred all over the year except in the winter months December and January with a peak period in July. They were viviparous and multiple breeders, i.e., give birth to fry several times in the breeding season. The mean egg diameter was measured to be (1.02±0.08mm) and fecundity was estimated (40-89) per gram of body weight. The gestation period ranged 25-35 days with an average of 28.1±2.12 days. Developmental stages observed under a compound microscope were classified based on the changes in the developing eye, such as optic cup, early-eyed, middle-eyed, late-eyed, very late-eyed etc. It was noticed that tail portion comes out first at birth. The number of fry per brood ranged from 12 to 60. New born fries were observed with transparent or blackish in colour having slender body with jaws developed on mouth and were fully capable of swimming, eating, and avoiding danger. Guppy grew rapidly, attained sexual maturity at 8 -10 weeks and reached full size in 6 months.</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 259-267, December 2013</p> Reza Md Shahjahan Md Jubayer Ahmed Rowshan Ara Begum Md Abdur Rashid ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 259 267 10.3329/jasbs.v39i2.17866 Enhancement of heterotrophic activities in polluted water by Bacillus coagulans BW-25 <p>Abstract not available</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 269-272, December 2013</p> Md Abdul Karim Rehena Nasrin Happy Mehedi Al Masum Sirajul Hoque ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 269 272 10.3329/jasbs.v39i2.17867 Study on the insect infestation of dry fishes at Singra <p>Abstract not available</p> <p>DOI: <a href=""></a></p> <p>J. Asiat. Soc. Bangladesh, Sci. 39(2): 273-277, December 2013</p> Fawzia Adib Flowra Anannya Sen Tumpa Md Tariqul Islam ##submission.copyrightStatement## 2014-02-03 2014-02-03 39 2 273 277 10.3329/jasbs.v39i2.17868