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Rediscovery of Geophila repens (L.) I.M. Johnst. (Rubiaceae) in Bangladesh 重新发现嗜地菌(L.)贝聿铭Johnst。(茜草科)产于孟加拉国
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-12-30 DOI: 10.3329/jujbs.v7i2.40753
Robayda Khanam, Saleha Khan, A. Rahim
{"title":"Rediscovery of Geophila repens (L.) I.M. Johnst. (Rubiaceae) in Bangladesh","authors":"Robayda Khanam, Saleha Khan, A. Rahim","doi":"10.3329/jujbs.v7i2.40753","DOIUrl":"https://doi.org/10.3329/jujbs.v7i2.40753","url":null,"abstract":"Abstract not available \u0000Jahangirnagar University J. Biol. Sci. 7(2): 121-125, 2018 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"83 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":"116731462","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
Investigation on a Bangladeshi isolate Bacillus aryabhattai for promising biotechnological applications 孟加拉分离芽孢杆菌生物技术应用前景的研究
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-12-30 DOI: 10.3329/jujbs.v7i2.40745
Mohammad Shahedur Rahman, Rasheda Banu, Ripa Moni, N. Islam, Mastura Khatun Ruma, U. S. Zohora
{"title":"Investigation on a Bangladeshi isolate Bacillus aryabhattai for promising biotechnological applications","authors":"Mohammad Shahedur Rahman, Rasheda Banu, Ripa Moni, N. Islam, Mastura Khatun Ruma, U. S. Zohora","doi":"10.3329/jujbs.v7i2.40745","DOIUrl":"https://doi.org/10.3329/jujbs.v7i2.40745","url":null,"abstract":"A new isolate was investigated from soil sample collected from Shahrasti upazilla of Chandpur district of Bangladesh. Based on the physico-chemical studies the strain was identified as gram positive Bacilli. Moleculer characterization of the strain was identified as Bacillus aryabhattai which is the first report in Bangladesh. The strain can survive in extreme conditions of salt, temperature and pH. This strain was further characterized and screened for the ability to produce useful enzymes. The optimum temperature for growth and production of these enzymes was within the temperature range 35oC to 40oC. The pH was found to be 7 for its growth and production of different enzymes when investigated over 48 h of incubation. The isolate produced various extracellular enzymes such as α-amylases, cellulases, β-glucosidases, lipases and proteases. The findings of this study provide useful information of the new strain that has potential biotechnological applications. Jahangirnagar University J. Biol. Sci. 7(2): 33-45, 2018 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"150 12 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":"133869941","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
Susceptibility of third instar larvae of Culex quinquefasciatus Say (Culicidae: Insecta) against some commercial organophosphate and pyrethroid insecticides 致倦库蚊三龄幼虫对几种市售有机磷和拟除虫菊酯类杀虫剂的敏感性
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-12-30 DOI: 10.3329/jujbs.v7i2.40744
Shirin Akhter Aney, Saad A. Ahmad, T. Akter, M. Mostafa
{"title":"Susceptibility of third instar larvae of Culex quinquefasciatus Say (Culicidae: Insecta) against some commercial organophosphate and pyrethroid insecticides","authors":"Shirin Akhter Aney, Saad A. Ahmad, T. Akter, M. Mostafa","doi":"10.3329/jujbs.v7i2.40744","DOIUrl":"https://doi.org/10.3329/jujbs.v7i2.40744","url":null,"abstract":"Eight commercial insecticides-chlorpyrifos, bifenithrin, fenitrothion, cypermethrin, deltamethrin, cyhalothrin, dimethoate and malathion under the brand name of Dursban 20 EC, Bifenithrin 20 EC, Sumithion 50 EC, Relothrin 10 EC, Marker 2.5 EC, Reeva 2.5 EC, Tafgar 40 EC and Hilthion 57 EC, respectively were tested in laboratory at room temperature to evaluate the effective level against 3rd instar larvae of Culex quinquefasciatus Say from Savar area of Dhaka. The LC50 values for chlorpyrifos, bifenithrin, fenitrothion, cypermethrin, deltamethrin, cyhalothrin, dimethoate and malathion were 0.127, 297.474, 0.308, 0.327, 0.198, 0.189, 0.054 and 0.031 ppm respectively and their corresponding LC90 values were found to be 0.984, 2582, 0.041, 3.298, 0.728, 1.705, 0.192 and 0.030 ppm respectively. The relative potency of these insecticides tested to the larvae was found in respect to their LC50 values in the order of Hilthion 57 EC (malathion)> Tafgar 40 EC (dimethoate)> Dursban 20 EC (chlorpyrifos)> Reeva 2.5 EC (cyhalothrin)> Marker 2.5 EC (deltamethrin)> Sumithion 50 EC (fenitrothion)> Relothrin 10 EC (cypermethrin)> Bifenithrin 20 EC. However, the relative potency of these insecticides tested to the larvae was found in respect to their LC90 values in the order of Hilthion 57 EC (malathion)> Sumithion 50 EC (fenitrothion)> Marker 2.5 EC (deltamethrin)> Dursban 20 EC (chlorpyrifos)> Tafgar 40 EC (dimethoate)> Reeva 2.5 EC (cyhalothrin)> Relothrin 10 EC (cypermethrin)> Bifenithrin 20 EC. Taken together, the insecticide-malathion (Hilthion 57 EC) was found to be the most effective against the third instar larvae of Cx. quinquefasciatus in Savar area. \u0000Jahangirnagar University J. Biol. Sci. 7(2): 21-32, 2018 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"147 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":"132592532","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
Effect of irrigation salinity on the growth and yield of two Aus rice cultivars of Bangladesh 灌溉盐度对孟加拉国两种水稻品种生长和产量的影响
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-12-30 DOI: 10.3329/jujbs.v7i2.40742
Tahmina Khanam, N. Akhtar, M. Halim, F. Hossain
{"title":"Effect of irrigation salinity on the growth and yield of two Aus rice cultivars of Bangladesh","authors":"Tahmina Khanam, N. Akhtar, M. Halim, F. Hossain","doi":"10.3329/jujbs.v7i2.40742","DOIUrl":"https://doi.org/10.3329/jujbs.v7i2.40742","url":null,"abstract":"The experiment was conducted to clarify the growth and yield response of two rice cultivars, BR55 and BR43 under salt stress. Six different concentrations of NaCl viz 50, 100, 150, 200, 250 and 300 mM and distilled water (control) were applied on the rice cultivars which were grown under pot culture condition. Growth parameters like plant height, tiller number, leaf number and leaf area were negatively affected by salinity in both cultivars. Salt stress caused a significant reduction in yield in both cultivars of rice. Growth reduction was higher in BR43 than in BR55.The reduction in yield and yield parameters were found to be lower in BR55 than those in BR43. The results obtained in the present study suggest that BR55 showed higher salt tolerance than in BR43. \u0000Jahangirnagar University J. Biol. Sci. 7(2): 1-12, 2018 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"67 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113975737","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: 12
Wildlife Diversity of Madhupur National Park, Bangladesh 孟加拉国Madhupur国家公园的野生动物多样性
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-08-18 DOI: 10.3329/JUJBS.V7I1.37967
Monirujjaman, M. M. Khan
{"title":"Wildlife Diversity of Madhupur National Park, Bangladesh","authors":"Monirujjaman, M. M. Khan","doi":"10.3329/JUJBS.V7I1.37967","DOIUrl":"https://doi.org/10.3329/JUJBS.V7I1.37967","url":null,"abstract":"The study was conducted to know the wildlife diversity of Madhupur National Park of Bangladesh from June 2014 to March 2015. A total of 151 species of wildlife (amphibians to mammals) belonging to 23 orders and 62 families were recorded which covers 16.41% of total wildlife species in our country. Among them 10 (7%) were amphibians, 15 (10%) reptiles, 111 (73%) birds and 15 (10%) mammals while 65 (43.05%) were very common, 41 (27.16%) common, 25 (16.55%) uncommon and 20 (13.24%) were rare. Among the 20 species of migratory birds, 15 (75%) were winter visitors and 5 (25%) summer visitors. The forests and other wildlife habitats in and around Madhupur National Park are decreasing rapidly due to illegal logging, land conversion for agriculture and human settlements.Jahangirnagar University J. Biol. Sci. 7(1): 1-13, 2018 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"35 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123350613","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
Comparative study of helminth parasites in Mastacembelus armatus (Lacepede, 1800) and Macrognathus pancalus (Hamilton, 1822) collected from fish market of Savar, Dhaka 达卡萨瓦尔鱼市采集的阿玛塔马(Lacepede, 1800年)和pancalus Macrognathus (Hamilton, 1822年)寄生虫的比较研究
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-08-18 DOI: 10.3329/JUJBS.V7I1.37977
A. Khatun, Md Kamrujjaman
{"title":"Comparative study of helminth parasites in Mastacembelus armatus (Lacepede, 1800) and Macrognathus pancalus (Hamilton, 1822) collected from fish market of Savar, Dhaka","authors":"A. Khatun, Md Kamrujjaman","doi":"10.3329/JUJBS.V7I1.37977","DOIUrl":"https://doi.org/10.3329/JUJBS.V7I1.37977","url":null,"abstract":"Abstract not availableJahangirnagar University J. Biol. Sci. 7(1): 73-79, 2018 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"51 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114101139","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
Effects of sodium chloride on germination and seedling growth of Sunflower (Helianthus annuus L.) 氯化钠对向日葵种子萌发和幼苗生长的影响
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-08-18 DOI: 10.3329/JUJBS.V7I1.37972
FM Tonmoy Chowdhury, M. Halim, F. Hossain, N. Akhtar
{"title":"Effects of sodium chloride on germination and seedling growth of Sunflower (Helianthus annuus L.)","authors":"FM Tonmoy Chowdhury, M. Halim, F. Hossain, N. Akhtar","doi":"10.3329/JUJBS.V7I1.37972","DOIUrl":"https://doi.org/10.3329/JUJBS.V7I1.37972","url":null,"abstract":"The response of BARI Sunflower-2 (Helianthus annuus L.) to sodium chloride (NaCl) at germination and early seedling growth was investigated. The seeds and seedlings of sunflower were treated with a series of eight different concentrations of NaCl viz 25, 50, 75, 100, 125, 150, 175 and 200 mM and distilled water (control) and were allowed to grow under plate culture condition. The results showed that the highest salinity concentration (200 mM NaCl) remarkably decreased the germination percentage, germination index and speed of germination of BARI Sunflower-2. Fresh and dry masses of both shoot and root were significantly reduced at a 25-200 mM NaCl solution. Significant reductions of shoot and root length were also noted with the increase of NaCl concentration. The results also illustrate that up to 50 mM NaCl concentration, all of the germination indices and fresh and dry biomass were withstand more than 70%. Thus the present study concluded that the BARI Sunflower-2 could be cultivated in moderately saline soil.Jahangirnagar University J. Biol. Sci. 7(1): 35-44, 2018 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133963578","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: 8
Evaluation of some integrated management approaches against flower thrips and pod borers of mungbean (Vigna radiata L.) 绿豆花蓟马和荚果蛀虫综合治理方法评价
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-08-18 DOI: 10.3329/JUJBS.V7I1.37974
A. Hossain, M. Sarker, M. Azam
{"title":"Evaluation of some integrated management approaches against flower thrips and pod borers of mungbean (Vigna radiata L.)","authors":"A. Hossain, M. Sarker, M. Azam","doi":"10.3329/JUJBS.V7I1.37974","DOIUrl":"https://doi.org/10.3329/JUJBS.V7I1.37974","url":null,"abstract":"Efficacy and profitability of different management packages comprising white sticky trap, biopesticide and synthetic insecticides were evaluated against flower thrips and pod borers of mungbean at Pulses Research Center, Ishurdi, Pabna, Bangladesh during two consecutive seasons of kharif-1, 2015 & 2016. All the treatments significantly reduced flower infestation by thrips and pod borer infestation. The highest percentage of flower infestation and thrips population reduction was observed in installing white sticky trap + spraying of chlorfenapyr (Intrepid 10 SC) + spraying with emamectin benzoate (Proclaim 5 SG) followed by farmers practice, i.e. spraying imidacloprid (Imitaf 20 SL). Again, the highest pod borer infestation reduction was found in installing white sticky trap + spraying azadirachtin (Bio-neem plus 1EC) + spraying with spinosad (Success 2.5 SC) treated plots followed by installing white sticky trap + spraying chlorfenapyr (Intrepid 10 SC) + spraying with emamectin benzoate (Proclaim 5 SG). The highest grain yield was obtained from installing white sticky trap + spraying chlorfenapyr (Intrepid 10 SC) + spraying with emamectin benzoate (Proclaim 5 SG), but the highest return came from farmers practice (spraying Imidacloprid). This might be due to the higher cost of Intrepid 10 SC and Proclaim 5 SG reduced the return as well as benefit. Therefore, considering the efficacy and benefit, it is seen that the evaluated IPM package could not be profitable against low level infestation of flower thrips and pod borer infestation. It could be profitable that areas where serious out break of flower thrips and pod borer occurs.Jahangirnagar University J. Biol. Sci. 7(1): 55-64, 2018 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126722561","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
Diurnal activity pattern of white-rumped vulture, Gyps bengalensis (Gmelin, 1788) in captivity during breeding season at Bangladesh National Zoo, Dhaka 达卡孟加拉国国家动物园繁殖季节圈养白背秃鹫(Gmelin, 1788)的日活动模式
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-08-18 DOI: 10.3329/JUJBS.V7I1.37978
Abraharul Islam, Monirujjaman, R. Ahammed, Mahruma Aktar
{"title":"Diurnal activity pattern of white-rumped vulture, Gyps bengalensis (Gmelin, 1788) in captivity during breeding season at Bangladesh National Zoo, Dhaka","authors":"Abraharul Islam, Monirujjaman, R. Ahammed, Mahruma Aktar","doi":"10.3329/JUJBS.V7I1.37978","DOIUrl":"https://doi.org/10.3329/JUJBS.V7I1.37978","url":null,"abstract":"Abstract not availableJahangirnagar University J. Biol. Sci. 7(1): 81-85, 2018 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126787189","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
Screening of protease producing bacteria from tannery wastes of leather processing industries at Hazaribag, Bangladesh 孟加拉国Hazaribag皮革加工业制革厂废料中蛋白酶产菌的筛选
Jahangirnagar University Journal of Biological Sciences Pub Date : 2018-08-18 DOI: 10.3329/JUJBS.V7I1.37970
S. Rahman, R. Islam, Omit Kumer Mondol, Mohammad Shahedur Rahman, F. Sabrin, U. S. Zohora
{"title":"Screening of protease producing bacteria from tannery wastes of leather processing industries at Hazaribag, Bangladesh","authors":"S. Rahman, R. Islam, Omit Kumer Mondol, Mohammad Shahedur Rahman, F. Sabrin, U. S. Zohora","doi":"10.3329/JUJBS.V7I1.37970","DOIUrl":"https://doi.org/10.3329/JUJBS.V7I1.37970","url":null,"abstract":"Protease enzymes are ubiquitous in nature and usually found in all living organisms. The present study was conducted for screening bacteria with the ability to produce extracellular proteases. Attempts were made to isolate protease producing bacterial strains from soil samples of tannery wastes from Hazaribag, Bangladesh and subsequent partial characterization was performed. A number of biochemical assays was performed for presumptive identification of the bacteria. Subsequent molecular identification of bacterial isolates was performed using 16S rRNA sequence analysis, which revealed that the isolated bacterium R82 to be Bacillus subtilis. The protease enzyme activity was determined 60.50 U/mL. Further characterization showed that the enzyme produced from the bacteria was extracellular and alkaline protease in nature. The optimum reaction incubation time, pH and temperature were found to be 30 min, 8.0 and 50°C, respectively. Bacterial culture supernatant was used to carry out dehairing of leather (2ʹʹ×2ʹʹ), which was achieved in 24 h. The results showed that isolated bacterial strain could be employed for strain improvement towards commercial production of protease with a promise for dehairing in leather processing industries.Jahangirnagar University J. Biol. Sci. 7(1): 23-34, 2018 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121074172","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
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