Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54644
F. Ferdousi, S. Sultana, T. Akter, Pinakshi Roy, S. Begum
The flight activity and flight muscle of the melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) were observed. The Tethered technique was used to observe the flight activity in this study. The flight activity, and wing and flight muscles were compared between male and female melon flies. The results indicate that the female was relatively better and strong flier than the male. The mean duration of the flight activity of the females was 13.90 min/hour and of the males was 7.12 min./hour. The mean length, width, volume of wings of the males were 6.07 mm, 2.67 mm and 10.99 mm³, respectively. On the other hand, the mean length, width and volume of the wings of females were 7.07 mm, 2.87 mm and 15.60 mm³, respectively. In case of wing muscles, the mean volume of dorsal longitudinal muscle (DLM) in male and female was found 5.20 mm³ and 5.67 mm³, respectively. The mean length of flight wing muscle of male and female was 2.22 and 2.23 mm, respectively and the mean breadth of male and female was 1.65 and 1.77 mm, respectively. Dhaka Univ. J. Biol. Sci. 30(2): 179-185, 2021 (July)
{"title":"Flight muscle and flight activity of melon fly, Bactrocera cucurbitae (Diptera: Tephritidae)","authors":"F. Ferdousi, S. Sultana, T. Akter, Pinakshi Roy, S. Begum","doi":"10.3329/DUJBS.V30I2.54644","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54644","url":null,"abstract":"The flight activity and flight muscle of the melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) were observed. The Tethered technique was used to observe the flight activity in this study. The flight activity, and wing and flight muscles were compared between male and female melon flies. The results indicate that the female was relatively better and strong flier than the male. The mean duration of the flight activity of the females was 13.90 min/hour and of the males was 7.12 min./hour. The mean length, width, volume of wings of the males were 6.07 mm, 2.67 mm and 10.99 mm³, respectively. On the other hand, the mean length, width and volume of the wings of females were 7.07 mm, 2.87 mm and 15.60 mm³, respectively. In case of wing muscles, the mean volume of dorsal longitudinal muscle (DLM) in male and female was found 5.20 mm³ and 5.67 mm³, respectively. The mean length of flight wing muscle of male and female was 2.22 and 2.23 mm, respectively and the mean breadth of male and female was 1.65 and 1.77 mm, respectively. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 179-185, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77326920","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54648
R. Sultana, A. Chamon, M. Mondol
The present study was carried out to assess the concentration of chromium (Cr), cadmium (Cd), lead (Pb), nickel (Ni), copper (Cu), zinc (Zn), iron (Fe) and manganese (Mn) in four stem vegetables such as Potato (Solanum tuberosum L.), Ginger (Zingiber officinale Roscoe), Garlic (Allium sativumL.) and Onion (Allium cepa L.) by using Atomic Absorption Spectrophotometer (AAS). Average daily intake (ADI), hazard quotient (HQ) and hazard index (HI) were also estimated to assess the human health risks posed by heavy metals from the consumption of the studied vegetables. The studied stem vegetable samples were collected in four phases from Kawran Bazar fresh vegetable market of Dhaka city of Bangladesh. Mean concentrations of Cr, Cd, Pb, Ni, Cu, Zn, Fe and Mn in the studied stem vegetables ranged between 0.88 to 2.35, 0.08 to 0.15, 0 to 2.25, 0 to 3.30, 5.70 to 9.85, 18.83 to 40.67, 50.60 to 456.38 and 9.23 to 852.35 mg/kg of dry weight, respectively. Mean concentration of maximum permissible limit (MPL) exceed in onion for Cr, in potato and onion for Pb and in ginger for Fe, Ni and Mn. Average daily intake was found to be lower than the maximum permitted tolerable daily intake in most cases except for Mn (26.475 mg/person/day) for consumption Ginger. Hazard quotient of Mn for dietary intake of Ginger (3.152) and hazard indices of Ginger (4.626), Garlic (1.183) and Onion (1.069) exceeded unity, signifying potential health risks from the dietary intake of these vegetables. This study suggests regular monitoring of heavy metals in vegetables to avoid the potential health hazards on human. Dhaka Univ. J. Biol. Sci. 30(2): 221-232, 2021 (July)
{"title":"Heavy metal concentration in commonly sold stem vegetables in Dhaka city market and probable health risk","authors":"R. Sultana, A. Chamon, M. Mondol","doi":"10.3329/DUJBS.V30I2.54648","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54648","url":null,"abstract":"The present study was carried out to assess the concentration of chromium (Cr), cadmium (Cd), lead (Pb), nickel (Ni), copper (Cu), zinc (Zn), iron (Fe) and manganese (Mn) in four stem vegetables such as Potato (Solanum tuberosum L.), Ginger (Zingiber officinale Roscoe), Garlic (Allium sativumL.) and Onion (Allium cepa L.) by using Atomic Absorption Spectrophotometer (AAS). Average daily intake (ADI), hazard quotient (HQ) and hazard index (HI) were also estimated to assess the human health risks posed by heavy metals from the consumption of the studied vegetables. The studied stem vegetable samples were collected in four phases from Kawran Bazar fresh vegetable market of Dhaka city of Bangladesh. Mean concentrations of Cr, Cd, Pb, Ni, Cu, Zn, Fe and Mn in the studied stem vegetables ranged between 0.88 to 2.35, 0.08 to 0.15, 0 to 2.25, 0 to 3.30, 5.70 to 9.85, 18.83 to 40.67, 50.60 to 456.38 and 9.23 to 852.35 mg/kg of dry weight, respectively. Mean concentration of maximum permissible limit (MPL) exceed in onion for Cr, in potato and onion for Pb and in ginger for Fe, Ni and Mn. Average daily intake was found to be lower than the maximum permitted tolerable daily intake in most cases except for Mn (26.475 mg/person/day) for consumption Ginger. Hazard quotient of Mn for dietary intake of Ginger (3.152) and hazard indices of Ginger (4.626), Garlic (1.183) and Onion (1.069) exceeded unity, signifying potential health risks from the dietary intake of these vegetables. This study suggests regular monitoring of heavy metals in vegetables to avoid the potential health hazards on human. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 221-232, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"236 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77563056","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54645
Rifat Samad, P. Rashid, J. Karmoker
An experiment was conducted to investigate the effect of aluminium (Al) toxicity on the anatomical changes in the root, stem and leaf of chickpea (Cicer arietinum L.) plants grown in sand culture. Toxicity of Al reduced the length of primary root and the number of lateral roots of chickpea than that of the control. Aluminium decreased the size and number of vessels in the root of chickpea. Larger area of sclerenchyma cells was noticed in the stem of Al-stressed plant. Number of palisade parenchyma was reduced in the leaf of chickpea. Aluminium treatment caused closure of stomata. Increased number of trichomes in chickpea leaves was also reported due to aluminium. Dhaka Univ. J. Biol. Sci. 30(2): 187-196, 2021 (July)
{"title":"Anatomical changes in chickpea (Cicer arietinum L.) under aluminium stress condition","authors":"Rifat Samad, P. Rashid, J. Karmoker","doi":"10.3329/DUJBS.V30I2.54645","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54645","url":null,"abstract":"An experiment was conducted to investigate the effect of aluminium (Al) toxicity on the anatomical changes in the root, stem and leaf of chickpea (Cicer arietinum L.) plants grown in sand culture. Toxicity of Al reduced the length of primary root and the number of lateral roots of chickpea than that of the control. Aluminium decreased the size and number of vessels in the root of chickpea. Larger area of sclerenchyma cells was noticed in the stem of Al-stressed plant. Number of palisade parenchyma was reduced in the leaf of chickpea. Aluminium treatment caused closure of stomata. Increased number of trichomes in chickpea leaves was also reported due to aluminium. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 187-196, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75270694","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54656
Pragga Saha Sharmi, A. Kashem, H. Rahman, M. Z. Hossain
This study investigated the variation in leaf traits of Sal (Shorea robusta Gaertn.) by collecting leaf samples from the natural populations of Sal distributed in Madhupur National Park, Cumilla and Dinajpur areas of Bangladesh. Soil samples were collected at 0 - 10 cm depth near the base of the tree trunk of the respective plants selected for the collection of leaf samples. Soils were analyzed for moisture content, pH, electrical conductivity, available N, total P, and organic C contents. Data showed a range of variation in the responses of leaf traits of the three populations. However, none of the morphological and physiological traits showed significant differences except chlorophyll content (p = 0.0047). Conversely, significant difference appeared in most of the leaf anatomical properties such as stomatal pore index (p = 0.0369), open-close behavior (p = < 0.0001) and stomatal density (p = 0.0008) among the three forests. Stomatal density, pore index, and percent open stomata were higher in the Madhupur forest, while closed stomata were significantly higher in the Dinajpur forest. Thus, the present study indicated that although all leaf traits did not show a similar trend of response, leaf stomata were more responsive to different geographical distribution, which could be attributed to the variation in soil moisture conditions. Dhaka Univ. J. Biol. Sci. 30(2): 317-324, 2021 (July)
{"title":"Leaf traits of sal (Shorea robusta Gaertn.) populations selected from different regions of Bangladesh","authors":"Pragga Saha Sharmi, A. Kashem, H. Rahman, M. Z. Hossain","doi":"10.3329/DUJBS.V30I2.54656","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54656","url":null,"abstract":"This study investigated the variation in leaf traits of Sal (Shorea robusta Gaertn.) by collecting leaf samples from the natural populations of Sal distributed in Madhupur National Park, Cumilla and Dinajpur areas of Bangladesh. Soil samples were collected at 0 - 10 cm depth near the base of the tree trunk of the respective plants selected for the collection of leaf samples. Soils were analyzed for moisture content, pH, electrical conductivity, available N, total P, and organic C contents. Data showed a range of variation in the responses of leaf traits of the three populations. However, none of the morphological and physiological traits showed significant differences except chlorophyll content (p = 0.0047). Conversely, significant difference appeared in most of the leaf anatomical properties such as stomatal pore index (p = 0.0369), open-close behavior (p = < 0.0001) and stomatal density (p = 0.0008) among the three forests. Stomatal density, pore index, and percent open stomata were higher in the Madhupur forest, while closed stomata were significantly higher in the Dinajpur forest. Thus, the present study indicated that although all leaf traits did not show a similar trend of response, leaf stomata were more responsive to different geographical distribution, which could be attributed to the variation in soil moisture conditions. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 317-324, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78289366","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54652
Roufun Naher, Reza A Rabby, Feroz Sharif
Depression is one of the most widely recognized and frequently underdiagnosed and undertreated mental health issues around the world. The Patient Health Questionnaire-9 (PHQ-9) has been suggested as the best accessible screening and case-discovering instrument to measure the severity of depression. The investigation aimed to set the reliability and validity of the PHQ-9 for the adults in Bangladesh. A total of 321 Bangladeshi adults (170 males and 151 females) were the study participants. A standard process of three phases was followed to adapt PHQ-9 in Bangladesh. The first phase was forward translation, second phase was Focus Group Discussion and panel of expert's rating and third phase was back translation into original language, piloting and final field data collection. The results showed good reliability of the translated version; the total scale Cronbach’s alpha is 0.837, gender-wise 0.839 for males and 0.841 is for females; similarly, the Spearman-Brown Coefficient is 0.855, and the Guttman Split-half coefficient is 0.848, which indicate the high Split-half reliability as well. The content and construct validity suggest that the Bangla PHQ-9 is a valid tool to assess the depression of Bangladeshi adults. Therefore, the Bangla version of PHQ-9 gives an impression of being a reliable and valid instrument to assess and diagnose depression among Bangladeshi people. Dhaka Univ. J. Biol. Sci. 30(2): 275-281, 2021 (July)
{"title":"Validation of patient health questionnaire-9 for assessing depression of adults in Bangladesh","authors":"Roufun Naher, Reza A Rabby, Feroz Sharif","doi":"10.3329/DUJBS.V30I2.54652","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54652","url":null,"abstract":"Depression is one of the most widely recognized and frequently underdiagnosed and undertreated mental health issues around the world. The Patient Health Questionnaire-9 (PHQ-9) has been suggested as the best accessible screening and case-discovering instrument to measure the severity of depression. The investigation aimed to set the reliability and validity of the PHQ-9 for the adults in Bangladesh. A total of 321 Bangladeshi adults (170 males and 151 females) were the study participants. A standard process of three phases was followed to adapt PHQ-9 in Bangladesh. The first phase was forward translation, second phase was Focus Group Discussion and panel of expert's rating and third phase was back translation into original language, piloting and final field data collection. The results showed good reliability of the translated version; the total scale Cronbach’s alpha is 0.837, gender-wise 0.839 for males and 0.841 is for females; similarly, the Spearman-Brown Coefficient is 0.855, and the Guttman Split-half coefficient is 0.848, which indicate the high Split-half reliability as well. The content and construct validity suggest that the Bangla PHQ-9 is a valid tool to assess the depression of Bangladeshi adults. Therefore, the Bangla version of PHQ-9 gives an impression of being a reliable and valid instrument to assess and diagnose depression among Bangladeshi people. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 275-281, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81544753","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}
Three Curcuma L. species were investigated cytogenetically which represent diversed staining pattern of heterochromatins in interphase nuclei and prophase chromosomes with orcein staining. Curcuma longa and C. caesia were found to possess 2n = 3x = 63 somatic chromosomes whereas 2n = 2x = 42 chromosome number in C. zedoaria is reported for the first time from Bangladesh. Total chromosome length recorded in C. longa, C. caesia and C. zedoaria were 145.08 ± 2.85 μm, 164.93 ± 4.29 μm and 97.78 ± 2.41 μm, respectively. This was the first attempt to measure the length of the chromosomes for these species. The experiment confirmed the basic chromosome number x = 21 with triploid (C. longa, C. caesia) and diploid (C. zedoaria) Curcuma plants. Polyploidy could be employed in the evolution and diversification of the genus Curcuma, which is an essential factor to characterize the species of this genus. Dhaka Univ. J. Biol. Sci. 30(2): 133-140, 2021 (July)
{"title":"Somatic chromosome number and ploidy level in three Curcuma spp. from Bangladesh","authors":"Ishrat Jahan Bonna, Sumana Akter, Syeda Sharmeen Sultana","doi":"10.3329/DUJBS.V30I2.54639","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54639","url":null,"abstract":"Three Curcuma L. species were investigated cytogenetically which represent diversed staining pattern of heterochromatins in interphase nuclei and prophase chromosomes with orcein staining. Curcuma longa and C. caesia were found to possess 2n = 3x = 63 somatic chromosomes whereas 2n = 2x = 42 chromosome number in C. zedoaria is reported for the first time from Bangladesh. Total chromosome length recorded in C. longa, C. caesia and C. zedoaria were 145.08 ± 2.85 μm, 164.93 ± 4.29 μm and 97.78 ± 2.41 μm, respectively. This was the first attempt to measure the length of the chromosomes for these species. The experiment confirmed the basic chromosome number x = 21 with triploid (C. longa, C. caesia) and diploid (C. zedoaria) Curcuma plants. Polyploidy could be employed in the evolution and diversification of the genus Curcuma, which is an essential factor to characterize the species of this genus. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 133-140, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74260721","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54653
Moomtahina Rahman, Alauddin, Ahmz Ali
A pot experiment was carried out on the rooftop of a building at Charfasson town Bhola to evaluate the growth and yield performance of strawberry (Fragaria ananassa) as influenced by different doses of vermicompost and inorganic fertilizers in the winter season of 2020-2021. Each pot was filled with ten kg soil and arranged in a completely randomized design having seven treatments with three replications. Treatments were T1: Control (-VC), T2: 5 t VC/ha, T3: 10 t VC/ha, T4: 15 t VC/ha, T5: 20 t VC/ha, T6: 25 t VC/ha, and T7: 50% RDF NPK (40 - 15-25 kg/ha). Different agronomic parameters were measured at the intervals of 30, 60, 90, and 120 days after sowing of seeds. All the treatments of vermicompost showed better responses in agronomic parameters than the control treatment. Among them, T5 treatment tends to show significantly (p<0.05) higher plant height (18.5 cm), number of the leaf (54/plant), root length (15.50 cm), first flowering (at 61 days), fruit length (5.75 cm), fruit diameter (13.75 cm), number of fruits (15/plant), the average weight of fruit (14.50 g), the fresh yield of fruits (13.59 t/ha), fresh weight of root (10.41 g/plant), fresh weight of reproductive structure (3.12 g/plant), weight of the dry reproductive structure (3.12 g/plant) and benefit-cost ratio (9.37). T6 treatment showed significantly (p<0.05) higher leaf area (49.00 cm2), fresh weight of petiole (4,61 g/plant), the weight of dry root (2.20 g/plant), weight of dry leaf (5.87 g/plant), weight of dry petiole (1.42 g/plant) and weight of dry biomass (12.48 g/plant). T2, T3 and T4 treatments showed significantly (p<0.05) higher growth than T7 treatment. The overall findings revealed that the application of vermicompost (20 t/ha) in the strawberry plant might be a suitable method in rooftop gardening to achieve its better agronomic and yield parameters in the southern parts of Bangladesh. Dhaka Univ. J. Biol. Sci. 30(2): 283-292, 2021 (July)
{"title":"Growth and yield performance of strawberry (Fragaria ananassa) under various doses of vermicompost and NPK fertilizers grown at rooftop of Charfasson area in the southern parts of Bangladesh","authors":"Moomtahina Rahman, Alauddin, Ahmz Ali","doi":"10.3329/DUJBS.V30I2.54653","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54653","url":null,"abstract":"A pot experiment was carried out on the rooftop of a building at Charfasson town Bhola to evaluate the growth and yield performance of strawberry (Fragaria ananassa) as influenced by different doses of vermicompost and inorganic fertilizers in the winter season of 2020-2021. Each pot was filled with ten kg soil and arranged in a completely randomized design having seven treatments with three replications. Treatments were T1: Control (-VC), T2: 5 t VC/ha, T3: 10 t VC/ha, T4: 15 t VC/ha, T5: 20 t VC/ha, T6: 25 t VC/ha, and T7: 50% RDF NPK (40 - 15-25 kg/ha). Different agronomic parameters were measured at the intervals of 30, 60, 90, and 120 days after sowing of seeds. All the treatments of vermicompost showed better responses in agronomic parameters than the control treatment. Among them, T5 treatment tends to show significantly (p<0.05) higher plant height (18.5 cm), number of the leaf (54/plant), root length (15.50 cm), first flowering (at 61 days), fruit length (5.75 cm), fruit diameter (13.75 cm), number of fruits (15/plant), the average weight of fruit (14.50 g), the fresh yield of fruits (13.59 t/ha), fresh weight of root (10.41 g/plant), fresh weight of reproductive structure (3.12 g/plant), weight of the dry reproductive structure (3.12 g/plant) and benefit-cost ratio (9.37). T6 treatment showed significantly (p<0.05) higher leaf area (49.00 cm2), fresh weight of petiole (4,61 g/plant), the weight of dry root (2.20 g/plant), weight of dry leaf (5.87 g/plant), weight of dry petiole (1.42 g/plant) and weight of dry biomass (12.48 g/plant). T2, T3 and T4 treatments showed significantly (p<0.05) higher growth than T7 treatment. The overall findings revealed that the application of vermicompost (20 t/ha) in the strawberry plant might be a suitable method in rooftop gardening to achieve its better agronomic and yield parameters in the southern parts of Bangladesh. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 283-292, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"184 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77525000","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54643
Nafiza Ferdowshi, M. A. Imran, Tasmim Alam Trishna
Measuring parental self-efficacy has influenced the children and their environment for reaching optimal development. The current study aimed to adapt the Tool to Measure Parenting Self-Efficacy (TOPSE) scale and to determine its psychometric properties for using in the context of Bangladesh. A total of 180 mothers of children aged 0 to 6 years were conveniently selected for this study. The TOPSE and Rosenberg’s Self-Esteem scale were used as measuring instruments. Collected data were analyzed to determine psychometric properties by using Cronbach’s alpha, Pearson product moment correlation coefficient, item analysis, and factor analysis. TOPSE had acceptable internal consistency (Coefficient alpha=0.89) and test-retest reliability (r=0.96). The convergent validity of TOPSE showed a highly positive correlation (r=0.91) with the Bangla Rosenberg’s Self-Esteem scale. The factor analysis resulted in 4 factors with Eigenvalues > 1, explaining 87% of the variances and the four factors showed Cronbach’s coefficient values ranging from 0.50 to 0.99. TOPSE has reasonably good psychometric properties. Further research may wish to require to see the implication of TOPSE in evaluating parenting programs in Bangladesh. Dhaka Univ. J. Biol. Sci. 30(2): 169-177, 2021 (July)
{"title":"Adaptation of the tool to measure parenting self-efficacy (topse) in Bangladesh","authors":"Nafiza Ferdowshi, M. A. Imran, Tasmim Alam Trishna","doi":"10.3329/DUJBS.V30I2.54643","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54643","url":null,"abstract":"Measuring parental self-efficacy has influenced the children and their environment for reaching optimal development. The current study aimed to adapt the Tool to Measure Parenting Self-Efficacy (TOPSE) scale and to determine its psychometric properties for using in the context of Bangladesh. A total of 180 mothers of children aged 0 to 6 years were conveniently selected for this study. The TOPSE and Rosenberg’s Self-Esteem scale were used as measuring instruments. Collected data were analyzed to determine psychometric properties by using Cronbach’s alpha, Pearson product moment correlation coefficient, item analysis, and factor analysis. TOPSE had acceptable internal consistency (Coefficient alpha=0.89) and test-retest reliability (r=0.96). The convergent validity of TOPSE showed a highly positive correlation (r=0.91) with the Bangla Rosenberg’s Self-Esteem scale. The factor analysis resulted in 4 factors with Eigenvalues > 1, explaining 87% of the variances and the four factors showed Cronbach’s coefficient values ranging from 0.50 to 0.99. TOPSE has reasonably good psychometric properties. Further research may wish to require to see the implication of TOPSE in evaluating parenting programs in Bangladesh. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 169-177, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78538073","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54651
A. R. Shome, M. Jaman, Fazle Rabbe, M. Alam
The world has been encountering a COVID-19 pandemic since late 2019. The world’s people have also witnessed the free movement of wildlife, even in many urban areas in some countries during the imposed lockdown. We conducted research on the birds in the urban landscape of Jamalpur Sadar upazila from March 2020 to October 2020 during this pandemic situation. A total of 134 species of birds with 4338 individuals were recorded during the study period. The number of resident bird species was the maximum (115 species, 85.82%) compared to migrants. The highest number of birds was observed (120 species, 89.55%) and counted 2278 individual birds 52.51%) in the summer season. It was observed that the highest diversity of birds (89 species, 65.92%) was in March. The tree was the most (94 species, n = 2502) used microhabitat by birds in the study area. Among all birds, Pycnonotus cafer was the most abundant bird species with the highest relative abundance (6.11%). Some bird species (e.g. Metopidius indicus, Anastomus oscitans, Amaurornis phoenicurus, Streptopelia tranquebarica, Lonchura malacca) were frequently observed in the urban landscape of the study area during the pandemic. Proper management and awareness creation are essential for the conservation of the bird species in this area. Dhaka Univ. J. Biol. Sci. 30(2): 261-274, 2021 (July)
{"title":"Bird diversity, composition and response during COVID-19 in an urban landscape, Jamalpur, Bangladesh","authors":"A. R. Shome, M. Jaman, Fazle Rabbe, M. Alam","doi":"10.3329/DUJBS.V30I2.54651","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54651","url":null,"abstract":"The world has been encountering a COVID-19 pandemic since late 2019. The world’s people have also witnessed the free movement of wildlife, even in many urban areas in some countries during the imposed lockdown. We conducted research on the birds in the urban landscape of Jamalpur Sadar upazila from March 2020 to October 2020 during this pandemic situation. A total of 134 species of birds with 4338 individuals were recorded during the study period. The number of resident bird species was the maximum (115 species, 85.82%) compared to migrants. The highest number of birds was observed (120 species, 89.55%) and counted 2278 individual birds 52.51%) in the summer season. It was observed that the highest diversity of birds (89 species, 65.92%) was in March. The tree was the most (94 species, n = 2502) used microhabitat by birds in the study area. Among all birds, Pycnonotus cafer was the most abundant bird species with the highest relative abundance (6.11%). Some bird species (e.g. Metopidius indicus, Anastomus oscitans, Amaurornis phoenicurus, Streptopelia tranquebarica, Lonchura malacca) were frequently observed in the urban landscape of the study area during the pandemic. Proper management and awareness creation are essential for the conservation of the bird species in this area. \u0000Dhaka Univ. J. Biol. Sci. 30(2): 261-274, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76877322","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}
Pub Date : 2021-07-09DOI: 10.3329/DUJBS.V30I2.54649
Hafisha Khatun Anee, Ashfaqul Muid Khandaker, R. Begum, R. Shahjahan
Climate change is responsible to a certain extent for the occurrence and spread of arboviral pathogens worldwide. Temperature is one of the crucial abiotic factors influencing the physiological processes of mosquitoes. Several genes of heat shock protein (AaeHsp26, AaeHsp83, and AaeHsc70) families are known to be expressed in mosquitoes, which aid in overcoming stress induced by elevated temperature. In this study, the relative expression of heat shock protein genes has been examined using Quantitative Real-time PCR (qPCR). The temperatures used for heat shock treatment were 27(control), 37, and 42°C for 1 hour heat shock period and applied to 3rd instar larvae. Significant up-regulation has been seen at 37, and 42°C. The highest expression level, about 82.43 fold, was reported for the AaeHsc70 gene at 42°C followed by 78.36 fold for AaeHsp26 at 37°C and 4.79 fold for AaeHsp83 at 42°C. The current study has shown that HSPs are important markers of stress and may function as critical proteins to protect and enhance the survival of Ae. aegypti larvae and pupae. Biological implications of these findings could impact the vector competencies Dhaka Univ. J. Biol. Sci. 30(2): 233-241, 2021 (July)
{"title":"Expression of heat shock protein genes Aaehsp26, Aaehsp83 and Aaehsc70 in response to thermal stress in Aedes aegypti larvae","authors":"Hafisha Khatun Anee, Ashfaqul Muid Khandaker, R. Begum, R. Shahjahan","doi":"10.3329/DUJBS.V30I2.54649","DOIUrl":"https://doi.org/10.3329/DUJBS.V30I2.54649","url":null,"abstract":"Climate change is responsible to a certain extent for the occurrence and spread of arboviral pathogens worldwide. Temperature is one of the crucial abiotic factors influencing the physiological processes of mosquitoes. Several genes of heat shock protein (AaeHsp26, AaeHsp83, and AaeHsc70) families are known to be expressed in mosquitoes, which aid in overcoming stress induced by elevated temperature. In this study, the relative expression of heat shock protein genes has been examined using Quantitative Real-time PCR (qPCR). The temperatures used for heat shock treatment were 27(control), 37, and 42°C for 1 hour heat shock period and applied to 3rd instar larvae. Significant up-regulation has been seen at 37, and 42°C. The highest expression level, about 82.43 fold, was reported for the AaeHsc70 gene at 42°C followed by 78.36 fold for AaeHsp26 at 37°C and 4.79 fold for AaeHsp83 at 42°C. The current study has shown that HSPs are important markers of stress and may function as critical proteins to protect and enhance the survival of Ae. aegypti larvae and pupae. Biological implications of these findings could impact the vector competencies \u0000Dhaka Univ. J. Biol. Sci. 30(2): 233-241, 2021 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85925116","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}
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