Jahangirnagar University Journal of Biological Sciences最新文献

{"title":"Clonal propagation of Dracaena fragrans cv. Victoria through tissue culture technology","authors":"Ahshan Jazib, M. T. Hossain, R. Raju","doi":"10.3329/jujbs.v8i2.49833","DOIUrl":"https://doi.org/10.3329/jujbs.v8i2.49833","url":null,"abstract":"Micropropagation of Dracaena fragrans cv.Victoria was conducted using the young, tender and disease-free leaves and nodal segments as explants collected from the local market of Savar, Dhaka. Surface sterilization of the explants pretreated with a liquid detergent and then 0.2% HgCl2 for 4-5 minutes produces maximum contamination free explants without any toxicity. After surface sterilization, different explants were inoculated on gelrite gelled MS medium supplemented with different concentrations of 2,4-D for callus induction and with different concentrations and combinations of BAP and NAA for direct shoot induction. Nodal explants showed high callus induction potentiality (80%) on MS medium supplemented with 1.5 mg/l 2,4-D. The highest frequency of direct shoot induction from nodal segment was 80% and the number of shoots per nodal segment was(5.28±1.17) when they were cultured on MS medium supplemented with 3.0 mg/l BAP and 0.3 mg/l NAA. The highest shoot multiplication (83.33%) with maximum number of shoot per unit callus (5.62±1.24) and maximum shoot length (3.27±0.82 cm) was observed when the nodal calli were transferred in gelrite gelled MS medium in combination with 4.5 mg/l BAP and 0.5 mg/l NAA. Additionally, the incorporation of 4% sucrose and 10% coconut water with the above mentioned medium showed the satisfactory shoot growth and development with an average 7.84±1.30 shoots per unit of callus which was 4.21±0.78 cm in length. Moreover, addition of 3.0 mg/l GA3 with the above mention medium showed highest rate of shoot elongation (5.83±2.31cm). For root induction, in vitro raised shoots were transferred onto half-strength of MS liquid medium augmented with different concentrations and combinations of auxins (IBA and NAA). Maximum rooting (75%) were observed in halfstrength MS liquid medium supplemented with 0.5 mg/l IBA. After appropriate rooting the plantlets were successfully acclimatized (85% survival) when they were cultured in polybag containing (1:1:1) garden soil, sand and compost mixture before transferred to soil. Regenerated plants were morphologically identical with mother plants and showed their uniform growth in field condition. \u0000Jahangirnagar University J. Biol. Sci. 8(2): 1-11, 2019 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122667458","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}

{"title":"Prevalence of birth abnormalities and congenital malformations in progenies from parental consanguinity in Rajshahi City Corporation area, Bangladesh","authors":"M. S. Islam, Sharmin Mustari","doi":"10.3329/jujbs.v8i2.49840","DOIUrl":"https://doi.org/10.3329/jujbs.v8i2.49840","url":null,"abstract":"In a series of two separate studies during January through August 2018, various birth abnormalities (BA) from 178 clinical cases and congenital malformations (CMF) from 70 consanguineous marriages (CM) and 100 non-consanguineous marriages (NCM) within the Rajshahi City Corporation (RCC) area have been recorded, analyzed and interpreted. Results demonstrate that frequencies of miscarriages (5.69 vs. 3.00), stillbirths (3.85 vs. 1.00), postnatal deaths (8.97 vs. 1.00), preterm deliveries (29.49 vs. 38.00) and breech births (6.41 vs. 4.00) were significantly greater in CM compared to the NCM counterparts. In addition, both gestational ages and live birth weights of the children from CM were significantly lesser than those recorded from the NCM couples. Of 205 children derived from 70 CM couples 67 were suffering from various CMF, the remaining 138 children were normal. Compared to this, only 2 out of 267 children were affected from 100 NCM couples. Mental retardation (MR) represented the highest CMF (n= 37), followed by cerebral palsy (CP; n= 16), crossed-eyes (CE; n=4), blindness (BL) and microcephaly (MC; n= 3 each), deaf-mute (DM; n= 2), and Down’s syndrome (DS) and syndactyly (SD; n= 1 each). In contrast to the CM cases, the NCM couples had only two affected children, one crossed-eyed girl and the other polydactylous boy. The overall frequency of CMF in CM (32.68) was much higher than that in NCM cases (0.75). In relation to parental consanguinity, the importance of genetic counselling and pre-implantation screening relevant to the present findings has been emphasized in this report. \u0000Jahangirnagar University J. Biol. Sci. 8(2): 81-91, 2019 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130009704","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}

{"title":"Arthropod ectoparasites of cattle and goats from three upazilas of Comilla district, Bangladesh","authors":"I. Mannan, T. Akter, Sahar Ahmad","doi":"10.3329/jujbs.v8i2.49835","DOIUrl":"https://doi.org/10.3329/jujbs.v8i2.49835","url":null,"abstract":"The prevalence of ectoparasitic arthropods of cattle and goats in Daudkandi, Homna and Titas upazilas of Comilla district were investigated. During this study (December 2013 to November 2014) 299 cattle and 196 goats were examined; and among them 180 and 117 were found to be infested respectively. Seventeen species of ectoparasites (both larvae and adult) were identified and they are Haematopinus quadripertusus, Haematopinus eurysternus, Linognathus vituli, Damalinia bovis, Stomoxys calcitrans, Musca domistica, Tabanus striatus, Diachlorus sp., Armigeres subalbatus, Ctenocephalides felis, Boophilus microplus, Haemaphysalis bispinosa, Haemaphysalis kinneari, Hyalomma anatolicum, Rhipicephalus sanguineus, Dermacentor sp. and Ixodes sp. The highest prevalence of ectoparasitic infestation (69.94%) were found in Titas and the lowest (53.34%) in Homna upazila. The intensity of ectoparasitic infestation was highest in Titas (12.20) and lowest in Homna (5.21) upazila. Cattle in Titas upazila showed highest prevalence (67.53%) and intensity (8.04) and Homna upazila showed lowest prevalence (48.63%) and intensity (5.55). Goats in Titas upazila showed highest prevalence (76.09%) and intensity (8.38), and Daudkandi upazila showed lowest prevalence (49.37%) and goats in Homna showed lowest intensity (4.80). This study quantifies the level of ectoparasitic infestation in cattle and goats which demands immediate control program and needs more intensive epidemiological study for detail identification of the constraints of animal health and production. \u0000Jahangirnagar University J. Biol. Sci. 8(2): 35-45, 2019 (December)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131553361","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}

{"title":"Molecular identification and phylogenetic relationships of seven Satyrinae butterflies in Bangladesh using Cytochrome c oxidase subunit I gene","authors":"Ananna Ghosh, Muhammad Sohel Abedin, A. J. Howlader, Monwar Hossain","doi":"10.3329/JUJBS.V8I1.42469","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42469","url":null,"abstract":"The Satyrinae is a subfamily of Nymphalid butterfly, which is morphologically and ecologically the most diverse group, occurring in all habitats. In the present study, Cytochrome c oxidase subunit I (COI) gene of seven species of Satyrinae was sequenced, aligned, and used to construct phylogenetic trees. The molecular identification of these Satyrinae species was confirmed by comparing the related sequences in the National Center for Biotechnology Information (NCBI) GenBank. The base compositions of the COI sequences were 39.07% T, 16.44% C, 29.83% A, and 14.64% G, revealing a strong AT bias (68.9%). The sequence distance among Satyrinae species ranged from 0.09% to 0.18%. Phylogenetic trees were constructed by the neighbor-joining (NJ) and maximum likelihood (ML) methods, using Orthetrum sabina as an outgroup. Both trees had almost identical topologies. The sampled species in Satyrinae exhibited the following relationships: Melanitis leda + [(Mycalesis mineus+(Mycalesis gotama+Mycalesis anaxias)) + (Ypthima baldus + (Lethe chandica+Elymnias hypermnestra))], suggesting that M. leda might be distantly related with the rest of the Satyrinae species. This clustering result is almost identical to current traditional classification. This study confirms that the COI based DNA barcoding is an efficient method for the identification of butterflies including Satyrinae species and, as such, may further contribute effectively to biodiversity and evolutionary research. \u0000Jahangirnagar University J. Biol. Sci. 8(1): 67-74, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857982","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}

{"title":"Characterization of rhizospheric and non rhizospheric bacteria from arsenic contaminated soil","authors":"U. Mayda, N. Tasnim, R. Shilpi","doi":"10.3329/JUJBS.V8I1.42463","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42463","url":null,"abstract":"The rhizosphere soil has a large and various number of microorganisms especially the bacteria. This experiment was conducted at the department of Botany, Jahangirnagar University, Savar, to investigate the rhizospheric and non-rhizospheric bacteria from arsenic contaminated soil. Pteris vittata was treated with different concentrations of arsenic ranges from 5000 to 10000 ppm in the pot. The experimental result indicated that the negative correlation between arsenic concentration and rhizospheric soil bacteria. Highest number of bacteria (8.6×108 cfu/g) were found in rhizospheric soil (control), while lowest numbers of bacteria (4.0×107 cfu/g) were found in the non-rhizospheric soil with 10000 ppm arsenic. Thirty bacteria were isolated from rhizospheric and non-rhizospheric soil samples. Out of thirty samples Bacillus and Pseudomonas were selected on the basis of morphological and biochemical nature. The present study concluded that the arsenic has an adverse effect on the growth of rhizospheric soil bacteria. \u0000Jahangirnagar University J. Biol. Sci. 8(1): 9-15, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128976363","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}

{"title":"Food and feeding behaviour of Chestnut-tailed Starling, Sturnia malabarica at Jahangirnagar University Campus, Bangladesh","authors":"Md. Touhidur Rahman, Shamia Farhana Shoma, M. Feeroz, Md. Kamrul Hasan","doi":"10.3329/JUJBS.V8I1.42464","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42464","url":null,"abstract":"Food and feeding behaviour of Chestnut-tailed Starling, Sturnia malabarica were studied at Jahangirnagar University Campus, Bangladesh, from August 2016 to March 2017. A total of 414 observations were made on the feeding maneuver and it was noted that they were omnivorous consuming 67.15% animal diet compared to 20.53%plant diet.They predominantly consumedinsect larvae(39%) followed by beetles (16%), nectar (14%), food wastes (12%), fruits (7%), dragonflies (7%), damselflies (3%), and worms (2%).Among the five types of feeding modes recorded,hang-upmode (37.92%) was major feeding technique in Chestnuttailed Starling while pecking mode (6.76%)was least used. Rain tree (Samanea saman) (33.76%) followed by White siris (Albizia procera) (30.55%) was recorded as the most utilized foraging plant while mostly preferred perching height by Chestnut-tailed Starling was 6-9m (44.9%) followed by 3-6m (31.6%). \u0000Jahangirnagar University J. Biol. Sci. 8(1): 17-23, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131974640","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}

{"title":"Proximate composition of two puffer fish species, Leiodon cutcutia and Dichotomyctere fluviatilis of Bangladesh","authors":"I. A. Chowdhury, R. Hasan, S. Parveen, S. Dey, B. Billah","doi":"10.3329/JUJBS.V8I1.42465","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42465","url":null,"abstract":"Protein, lipid, ash and moisture content in the body muscles of two commonly available puffer fish species in Bangladesh (Leiodon cutcutia and Dichtomyctere fluviatilis) have been analysed from January 2018 to June, 2018. The puffer fish species were collected from different habitats i.e., Leiodon cutcutia from freshwater and Dichtomyctere fluviatilis from estuarine water. The percentage of the proximate composition varied in different months in both the species. In Leiodon cutcutia, moisture content fluctuated from 79.32% to 87.61% with an average of 83.75%; protein content from 6.35% to 13.31% with an average of 9.49%; lipid content from 1.57% to 2.32% with an average of 1.92% and ash content from 2.30% to 3.27% with an average of 2.84%. In Dichotomyctere fluviatilis, moisture content fluctuated from 73.77% to 84.18% with an average of 77.49%; protein content from 10.03% to 19.77% with an average of 16.80%; lipid content from 0.92% to 1.71% with an average of 1.32% and ash content from 2.77% to 3.34% with an average of 3.05%. The comparative evaluation of the nutritional value of the studied fish species revealed that the puffer fish from estuarine environment might contain higher amount of nutrients. Thus, proper utilization of this species towards sustainable management, nutritional composition and biosecurity issues will lead to achieve sustainable blue economy. \u0000Jahangirnagar University J. Biol. Sci. 8(1): 25-33, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116322600","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}

{"title":"Study of an arsenic metabolizing bacteria from arsenic contaminated soil of Chandpur district, Bangladesh","authors":"Roksana Khanam, Ripa Moni, Zahidul Islam, M. Billah, U. S. Zohora, F. Sabrin, Mohammad Shahedur Rahman","doi":"10.3329/JUJBS.V8I1.42468","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42468","url":null,"abstract":"Arsenic is a toxic metal found as inorganic oxyanion arsenate As(V) and arsenite As (III) species. The disposal of toxic heavy metals such as arsenic poses high risk to environment. The present study was undertaken to isolate arsenic-metabolizing bacteria from arsenic contaminated soil of Chandpur district, which is one of the most arsenic contaminated area in Bangladesh and later these bacteria were screened for their ability to metabolize arsenate. Out of ninety eight isolates, ten were found to be capable of metabolizing arsenic in Yeast Extract Mannitol (YEM) medium containing 2 mM arsenate at 37ºC. One of the bacterial isolates designated as I-25 was found to produce an extracellular enzyme which can reduce As(V) into As(III) and able to grow in presence of up to 500 mM arsenate. Subsequent molecular identification of this enzyme producing bacterial isolate using 16s rRNA sequence analysis was correlated with previously identified isolate as Bacillus aryabhatti. Further characterization of the enzyme showed that optimum pH of the extracellular enzyme by the bacterial species was 7 and optimum temperature for the enzyme activity was 60ºC. The bacterial isolates can be exploited for the study of possible bioremediation of arsenic contamination. \u0000Jahangirnagar University J. Biol. Sci. 8(1): 57-65, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130582533","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}

{"title":"Neuropharmacological and gastrointestinal evaluation of coloring agent metanil yellow used in food and beverages","authors":"M. Rahman, Arpon Krishna Bala, M. Rahman, M. Hasan, Runa Masuma","doi":"10.3329/JUJBS.V8I1.42466","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42466","url":null,"abstract":"Metanil yellow as a coloring agent is widely used in food industry to make food more appealing, appetizing and informative. Regulatory organization like FDA maintains strict rules but in our country coloring agents are at randomly used. This study is designed to evaluate side effects of metanil yellow on central nervous system and gastrointestinal tract in mice. Open field, hole board and hole cross tests were done to evaluate the effects of central nervous system; while castor oil and magnesium sulfate induced diarrheal tests were done to observe the effects on gastrointestinal tract. The mice were administered a dose of 5 gm/kg body weight of metanil yellow considered as 1x dose (MTYx) and another dose of 20 gm/kg body weight of metanil yellow considered as 4x dose (MTY4x). In the study, the metanil yellow exhibited central nervous system stimulatory effects based on hole cross test (p=000***, p=.003**, p=000***, p=.001***), hole board test (p=.03*, p=.005**, p=.041*, p=0.018*), and open field test (p=0.004**, p=.002**, p=.002**, p=.011*, p=0.008*). On the other hand gastrointestinal test results failed to show a significant effect (p=.04*). \u0000Jahangirnagar University J. Biol. Sci. 8(1): 35-44, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130718905","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}

{"title":"Effect of Ashwagandharista (Withania somnifera) on the kidney functions of male and female rats","authors":"T. Rahman, Rakib Hasan, M. Choudhuri","doi":"10.3329/JUJBS.V8I1.42462","DOIUrl":"https://doi.org/10.3329/JUJBS.V8I1.42462","url":null,"abstract":"The key objective of this present study was to analyze the effect(s) of Ashwagandharishta on the kidney functions of both male and female Albino rats. Chronic toxicity tests were also done. Following treatments the rats were observed for 51 days to know the effects of Ashwagandharishta on kidney functions considering 3 parameters such as serum urea, creatinine and uric acid. Our results failed to exhibit a significant increase in serum urea level at low dose (P<0.01), medium dose (P<0.05) and at high dose (P<0.001) in male rat groups; but with female rat groups our results showed significant increase in serum urea level at three dose levels. Regarding serum creatinine level male rats and female rats showed a trend of increase in level at different dose but effects were insignificant except medium dose in male rats (P<0.05). Regarding serum uric acid level our results failed to show a significant increase irrespective of dose. \u0000Jahangirnagar University J. Biol. Sci. 8(1): 1-7, 2019 (June)","PeriodicalId":259237,"journal":{"name":"Jahangirnagar University Journal of Biological Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131253131","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}