Journal of the Asiatic Society of Bangladesh, Science最新文献_第6页

Length-Weight Relationship and Sex Ratio of Amblypharyngodon Mola in Dekar Haor of Sunamganj, Bangladesh 孟加拉Sunamganj Dekar Haor地区双咽齿鱼的长重关系和性别比例

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46560

P. Das, M. Uddin, M. Islam, M. Biswas, M. Mia

{"title":"Length-Weight Relationship and Sex Ratio of Amblypharyngodon Mola in Dekar Haor of Sunamganj, Bangladesh","authors":"P. Das, M. Uddin, M. Islam, M. Biswas, M. Mia","doi":"10.3329/jasbs.v44i2.46560","DOIUrl":"https://doi.org/10.3329/jasbs.v44i2.46560","url":null,"abstract":"The study was carried out to determine length-weight relationship and sex ratio of a freshwater fish Amblypharyngodon mola (Hamilton 1822) collected from Dekar haor of Sunamganj district during the period of January to August 2017. A total of 2000 fishes were collected for the study and categorized these fishes into three groups namely males, females and combined sexes. Among 2000 mola 777 were male and 1223 were female. Length-weight equations and the correlation coefficients obtained for males, females and combined ones were: males Y = –1.97 + 3.00X, r = 0.883; females Y = –2.30 + 3.41X, r = 0.914 and combined Y = –2.11 + 3.16X, r = 0.904. Female’s A. mola attained more weight with the increases in length. Value of correlation coefficient ‘r’ was 0.883 for male and exhibited highly positive correlation between length and weight. On the contrary, ‘r’ value for female was 0.914 and it had also strongly positive correlation between length and weight relationships. Length-weight relationship of A. mola for male, female and combined sexes showed allometric pattern of growth. Condition factor ‘K’ for male, female and combined sexes was 1.09, 1.05 and 1.06, respectively and indicated better condition of fishes. The highest sex ratio (1 : 2.05) was found in May and the lowest (1 : 1.33) was in February. Dominance of females over males throughout the year was observed with an average ratio of male and female 1 : 1.57. Therefore, results of the study indicate that the existing hydrobiological conditions of the haor are conducive for food availability, free movement, feeding and better growth of the fish. \u0000Asiat. Soc. Bangladesh, Sci. 44(2): 185-193, December 2018","PeriodicalId":186946,"journal":{"name":"Journal of the Asiatic Society of Bangladesh, Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124249658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Yield and Biochemical Attributes of Brri Dhan-44 (Oryza Sativa L.) as Affected by Tiba Application 施Tiba对水稻Brri Dhan-44产量和生化特性的影响

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46554

A. G. Adam, Rasedul Islam, H. Begum

{"title":"Yield and Biochemical Attributes of Brri Dhan-44 (Oryza Sativa L.) as Affected by Tiba Application","authors":"A. G. Adam, Rasedul Islam, H. Begum","doi":"10.3329/jasbs.v44i2.46554","DOIUrl":"https://doi.org/10.3329/jasbs.v44i2.46554","url":null,"abstract":"A pot experiment was carried out to evaluate the effect of different concentrations (0, 10, 25, 50 and 100 ppm) of TIBA on yield and biochemical attributes of BRRI dhan-44. Results revealed that number of effective tillers and dry weight of panicle per plant, length of panicle, number of grains per panicle, 1000-grain weight, yield per plant and harvest index increased due to all concentrations of TIBA treatments where, treatments mean varied significantly in majority of cases. The stimulatory effect of TIBA treatments on number of effective tillers and dry weight of panicles per plant, length of panicle, number of grains per panicle and 1000-grain weight resulted significant increase in grain yield per plant. The maximum yield per plant (17.83 g) was obtained from 10 ppm TIBA treatment which was 59.76 % higher over the control. Increases in yield per plant due to 25, 50 and 100 ppm TIBA were 50.53, 47.58 and 28.49%, respectively. Findings of this investigation showed that foliar application of TIBA had beneficial effect on pigment content of leaves at tillering and grain filling stages with a few exceptions. Protein content of leaves was also positively influenced by most of the treatment at tillering stage. Out of five treatments, 10 ppm TIBA produced better results. Asiat. Soc. Bangladesh, Sci. 44(2): 117-125, December 2018","PeriodicalId":186946,"journal":{"name":"Journal of the Asiatic Society of Bangladesh, Science","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116179017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Impacts of Rice Hull and Pistia on the Vegetative Growth of Rice and Physico-Chemical Properties of Saline Soil Under Variable Moistures 变湿条件下稻壳和雌蕊对水稻营养生长及盐渍土理化性质的影响

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46559

M. S. Hossain, H. R. Khan, S. Akter, M. Saha, F. Farzana

{"title":"Impacts of Rice Hull and Pistia on the Vegetative Growth of Rice and Physico-Chemical Properties of Saline Soil Under Variable Moistures","authors":"M. S. Hossain, H. R. Khan, S. Akter, M. Saha, F. Farzana","doi":"10.3329/jasbs.v44i2.46559","DOIUrl":"https://doi.org/10.3329/jasbs.v44i2.46559","url":null,"abstract":"A pot experiment was conducted using BRRI Hybrid Dhan-6 variety of rice at the premises of the Department of Soil, Water and Environment, University of Dhaka, Bangladesh to evaluate the capabilities of rice hull (RH: 0, 2, 4 t ha-1) and pistia (PT: 0, 400, 800 kg ha-1) for the improvement of growth performances of rice grown under field moist (FM: 70% moisture) and 2 - 5 cm standing water (SW) conditions in saline soil. Among the vegetative growth, the plant heights, number of productive tillers, fresh shoot and shoot dry matter weights were found to be increased significantly (p ≤ 0.05) with the increased rates of rice hull and pistia treatments, and the increments were more striking by their combinations in most of the cases under both FM and SW conditions. The tallest plant heights (112 cm in FM and 120 cm in SW) and the maximum number of productive tillers (13 in FM and 16 in SW) were recorded at maturity stage of rice in the T8 (RH4PT8) treatment where rice hull and pistia were applied at the highest (RH: 4 t ha-1, PT: 800 kg ha-1) dosages. Based on superiority in both the plant heights and number of tillers, the amendments can be arranged in the sequence of T8 > T7> T6> T5> T2> T3>T4> T0 > T1. The analysis of variance on these data indicated that in the standing water condition, fresh shoot and shoot dry matter weights of rice plants were found to be increased significantly (p ≤ 0.05) by the application of the higher rates of the treatments and their combinations. Thus, the application of indigenous organic amendments such as, rice hull and pistia showed significant contribution for the growth performances of rice under variable moistures but further researches are needed under variable soil and climatic conditions to ensure food security under saline soil. \u0000Asiat. Soc. Bangladesh, Sci. 44(2): 173-183, December 2018","PeriodicalId":186946,"journal":{"name":"Journal of the Asiatic Society of Bangladesh, Science","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131873031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Comparative Study of the Changes in Climatic Condition and Seasonal Drought in North-Western Part of Bangladesh 孟加拉国西北部气候条件变化与季节性干旱的比较研究

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46561

R. H. Khan, M. Islam

{"title":"Comparative Study of the Changes in Climatic Condition and Seasonal Drought in North-Western Part of Bangladesh","authors":"R. H. Khan, M. Islam","doi":"10.3329/jasbs.v44i2.46561","DOIUrl":"https://doi.org/10.3329/jasbs.v44i2.46561","url":null,"abstract":"The study examines the long-term and seasonal climatic variations in north-western part of Bangladesh (NWPB). Long-term variation of different climatic parameters reveals that significant increases in temperature are associated with decreasing evaporation which could be attributed to wind speed variation and seasonal variation of temperature. Increase of monsoon rainfall during monsoon period and scarcity or absence of rainfall during dry periods increase the region’s vulnerability to monsoon flood and seasonal drought, respectively. The area witnesses a single peak of rainfall in July during the first half of the study period (1964-1985), whereas the same experiences bimodal peak of rainfall during July and September in the second half of the study period (1986-2007). This may signify the changes of climatic condition in the studied area. Annual variability of rainfall as well as the unpredictable shifting of rainfall periods might be a possible reason for the seasonal drought. The aridity index indicates that the overall dryness of the area has increased during winter season. The study shows that humidity increases at all stations throughout the year. The study also shows that long-term seasonal variation of both surface and groundwater level is also prominent. Gradual decrease of surface water level was observed in Teesta River which might be due to unilateral withdrawal of surface water in the upper riparian. Detailed investigation on hydrometeorology of the study area is required to see whether there is any trend of climate change in the area. \u0000Asiat. Soc. Bangladesh, Sci. 44(2): 195-210 December 2018","PeriodicalId":186946,"journal":{"name":"Journal of the Asiatic Society of Bangladesh, Science","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127697545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Wildlife Diversity and Population Status of Kashimpur Union, Gazipur, Bangladesh 孟加拉加齐浦尔卡什姆普尔联盟野生动物多样性和种群状况

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46553

N. Islam, M. Jaman, Md. Mokhlesur Rahman, Mahabub Alam

{"title":"Wildlife Diversity and Population Status of Kashimpur Union, Gazipur, Bangladesh","authors":"N. Islam, M. Jaman, Md. Mokhlesur Rahman, Mahabub Alam","doi":"10.3329/jasbs.v44i2.46553","DOIUrl":"https://doi.org/10.3329/jasbs.v44i2.46553","url":null,"abstract":"Wildlife diversity (amphibians, reptiles, birds and mammals) of Kashimpur Union in Gazipur Sadar Upazila under Gazipur district was studied from May, 2015 to March, 2016. A total of 110 species of wildlife belonging to 58 families under 19 orders were recorded. Among them, 6 (5.45%) species were amphibians, 14 (12.72%) reptiles, 72 (65.45%) birds and 18 (16.38%) were mammals. Among the amphibians, 5 (83.33%) species were frogs and only one (16.67%) was toad; of reptiles, 7 (50%) species were lizards, 5 (35.71%) snakes and 2 (14.29%) were tortoises. Of the birds, 39 (54.16%) species were passerines and remaining 33 (45.84%) were non-passerines. Resident status shows that 66 (91.62%) species were resident, 5 (7.00%) migrants and 1 (1.38%) species were vagrant. Among the mammals, 8 (44.45%) species were rodents, 4 (22.22%) flying mammals and 6 (33.33%) species were carnivorous mammals. The relative abundance shows that 10 (9.09%) species were very common, 24 (21.81%) common, 31 (28.19%) fairly common and 45 (40.91%) species were few. Considering the conservation status, 5 species were near threatened and 105 were the least concern nationally. According to Shannon-Wiener (H = 3.287) and Simpson's (D = 0.942) diversity indices, diversity of birds was higher than the other wildlife observed. Some potential threats on wildlife diversity were identified such as habitat degradation and fragmentation, expansion of agricultural lands and urbanization. Therefore, conservation and management are necessary in order to protect the diversity of existing wildlife and their population in the study area. \u0000Asiat. Soc. Bangladesh, Sci. 44(2): 101-115, December 2018","PeriodicalId":186946,"journal":{"name":"Journal of the Asiatic Society of Bangladesh, Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114190071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Delineating the Service Area of Cyclone Shelter and Vulnerable Households Using Network Analyst Tool: a Case Study on Southkhali Union of Bagerhat District, Bangladesh 利用网络分析工具划定气旋避难所和脆弱家庭的服务区域:以孟加拉国巴格哈特地区南卡里联盟为例

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46556

Khandaker Tanvir Hossain, Md. Hafizur Rahman

引用次数: 4

Characterization of Pond Water Chemistry and Its Potability Status at South-West Coastal Region of Bangladesh 孟加拉国西南沿海地区池塘水化学特征及其可饮用状况

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46558

S. Saha, Aminur Rahman, Krishna Rani Barai

{"title":"Characterization of Pond Water Chemistry and Its Potability Status at South-West Coastal Region of Bangladesh","authors":"S. Saha, Aminur Rahman, Krishna Rani Barai","doi":"10.3329/jasbs.v44i2.46558","DOIUrl":"https://doi.org/10.3329/jasbs.v44i2.46558","url":null,"abstract":"Dacope Upazilla under Khulna district is one of the most affected safe water scarcity regions like any other part of southwest coastal region of Bangladesh. The demands for drinking and cooking water in the area are mostly met from rainwater harvesting and pond water. Pond water from different stations of Dacope Upazilla was analyzed for assessing the water chemistry, source rock evaluation and its potability status. Thirty one samples were collected by purposive sampling and analyzed following standard methods. The analysis reveals that the cations and anions of the ground water showed the order of abundance as Na+> Mg++>Ca++>K+ and Cl->SO4 -->HCO3 - , respectively. Source rock deduction suggests that the water is mostly carbonate weathering of sea water or brine intrusion. Piper diagram suggests that the water is in saline condition. Ionic ratios also justify the aforesaid relations. The chemical constituent of water is (Na++K+) and (Cl- +HCO3 -) type influenced by sea water, however, ponds are in transition zone influenced by tide. With reference to Bangladesh and WHO standards the research states that most pond water do not satisfy the potable quality, therefore management options need to be formulated for further exploitation. \u0000Asiat. Soc. Bangladesh, Sci. 44(2): 159-171, December 2018","PeriodicalId":186946,"journal":{"name":"Journal of the Asiatic Society of Bangladesh, Science","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114935895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Migrant Community of Nijhum Dwip: Comparative Importance of Livelihood Capitals to Adapt in This Island Nijhum Dwip移民社区:生计资本在岛上适应的相对重要性

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46555

Amit Kumar, Sabnam Sarmin Luna

引用次数: 2

An Annotated Avifaunal Checklist of the Saint Martin’s Island of Bangladesh 孟加拉圣马丁岛鸟类清单注释

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46557

Irin Sultana, Shayer Mahmood Ibney Alam, Delip K. Das

引用次数: 2

Assessment of Flood Risk in the Eastern Part of Jamuna Floodplain 贾穆纳漫滩东部洪涝风险评估

Journal of the Asiatic Society of Bangladesh, Science Pub Date : 2018-12-30 DOI: 10.3329/jasbs.v44i2.46562

M. Billah, M. Ansary

引用次数: 2