Journal of Biodiversity Conservation and Bioresource Management 2020-01-22T10:02:36+00:00 Dr. M. A. Bashar Open Journal Systems Official journal of the Biodiversity Conservation Trust Foundation (BCTF) Prospect of natural regeneration of tree species in Hazarikhil Wildlife Sanctuary of Chattogram, Bangladesh 2020-01-22T10:02:36+00:00 MA Rahman MA Alim MK Hossain MA Hossain <p>Natural regeneration of tree species is the major means of understanding the restoration potentiality of a secondary forest. Natural regeneration of a forest is a tool for measuring the health of the forest ecosystem. Natural regeneration status of tree species in Hazarikhil Wildlife Sanctuary (HWS) in Chittagong North Forest Division, Bangladesh was assessed laying 75 systematic quadrats of 4m×4m in size. A total of 90 regenerating tree species belonging to 34 families was identified from the HWS. Euphorbiaceae family possessed maximum regenerating tree species (14 species) followed by Mimosaceae (7), Lauraceae and Meliaceae (6 species each), and Moraceae (5 species). The overall seedling density was 7,083 per ha where <em>Ficus hispida </em>showed the highest number of seedlings (792 per ha) followed by <em>Quercus </em>sp. (475), <em>Ficus religiosa </em>(408), <em>Lithocarpus elegans </em>(375) and <em>Lepisanthes rubiginosa </em>(367). The number of <em>Ficus hispida </em>seedlings per ha was higher due to high coppicing ability. <em>Lepisanthes rubiginosa </em>attained maximum IVI (27.59) followed by <em>Ficus hispida </em>(21.18) and <em>Quercus oxyodon </em>(13.32). The seedlings of <em>Aegle marmelos, Lithocarpus sp., Flacourtia jangomas, Albizia odoratissima, Acronychia padunculata</em>, <em>Chaetocarpus castanicarpus</em>, <em>Maesa paniculata</em>, <em>Crypteronia paniculata</em>, <em>Streblus asper </em>and <em>Mussaenda roxburghii </em>were also found common in the study area. The findings will create baseline information of regenerating tree species, composition, diversity and population structure which can be used for monitoring future changes as well as taking policy decisions for the management of this Wildlife Sanctuary.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 1-1</em><em>2</em></p> 2020-01-14T00:00:00+00:00 ##submission.copyrightStatement## Effects of copper and vermicompost on growth and yield of cowpea (Vigna unguiculata L.) Walp and nutrient accumulation in its fruits 2020-01-22T10:02:36+00:00 AT Sharif AHMZ Ali MK Rahman <p>The effects of copper (Cu) and vermicompost (VC) on growth and yield of cowpea (<em>Vigna unguiculata </em>L.) Walp and nutrient accumulation in its fruits was examined. Eight treatments of Cu and VC were used. The highest plant height (226.67 cm), leaf number per plant (86.33), leaf area (174.12 cm2/plant), dry weight (13.98 g/plant), fruit length (52.4 cm), fruit number per plant (6), and fruit yield (5.65 g/plant) were recorded in Cu<sub>0.5</sub> kg/ha + VC<sub>5</sub> ton/ha treatment at harvest. The results of growth and yield of cowpea varied significantly (p≤ 0.05) and increased with time. The total nutrient concentrations in the fruits were measured and varied significantly (p≤ 0.05). The highest concentration of total P (0.79%), K (4.14%), S (0.42%), Cu (27 mg/kg), Fe (640 mg/kg) and Mn (59 mg/kg) in the fruits were observed in Cu<sub>0.5</sub> kg/ha + VC<sub>5</sub> ton/ha treatment and total N (4.29%) and Zn (88 mg/kg) were found in Cu<sub>1.5</sub> kg/ha + VC5 ton/ha treatment. The overall best growth, yield and nutrient accumulation in the fruits of cowpea were achieved in Cu<sub>0.5</sub> kg/ha + VC<sub>5</sub> treatment.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 13-</em><em>18</em></p> 2020-01-14T10:36:03+00:00 ##submission.copyrightStatement## Status of lycaenid butterflies in some selected forests of Bangladesh 2020-01-22T10:02:36+00:00 S Akand MA Bashar HR Khan <p>A field investigation was carried out from January 2015 to December 2017 to study the status of some lycaenid butterflies in some selected forest areas of Bangladesh. A total of 6,724 lycaenids was recorded from Butterfly Research Park at Bhawal National Park, Gazipur; Madhupur National Park, Tangail; Satchori National Park and Rema-Kalenga Wildlife Sanctuary of Habigonj. The dominant species was <em>Arhopala pseudocentaurus </em>with 21.85% relative frequency and the least abundant species was <em>Rathinda amor </em>with 0.75% relative frequency. Butterfly Research Park showed the maximum number of butterfly individuals with a covariance of 40% followed by Madhupur National Park (37%), Rema-Kalenga Wildlife Sanctuary (13%), and Satchori National Park (10%). A significant difference (F = 3.52, p-value = 0.02) has been assessed using „One-way ANOVA‟ test. The difference in the availability of butterflies in different habitats indicated the differences in plant diversity among the forests. Lycaenid butterflies displayed highest abundance (13.19%) in December and lowest (5.38%) in October. There was no significant difference (F = 0.72, p-value = 0.71) among different months throughout the study period in overall species abundance though highest number was recorded in December. The abiotic factors (viz. temperature and relative humidity etc.) influence the presence of butterflies. Lycaenid butterflies demonstrated the highest abundance (887) in 26.9<sup>°</sup>C along with 64% relative humidity whereas the least abundance (362) has been recorded at 31.7<sup>°</sup>C with 77% relative humidity. The significant negative correlation was found in between lycaenid abundance and temperature (r = ─ 0.45, pvalue = 0.14), and between lycaenid abundance and relative humidity (r = ─ 0.19, p-value = 0.54). The butterfly population increased with decreasing average temperature and relative humidity during the study period. This investigation reveals the differences in the availability of lycaenid butterflies in relation to the differences in plant population and also the effect of abiotic factors in the forest areas.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 19-</em><em>32</em></p> 2020-01-14T10:36:26+00:00 ##submission.copyrightStatement## Effects of old jute seeds on soil fertility and jute production 2020-01-22T10:02:35+00:00 M Hasan N Gani MD Alam MTA Chowdhury <p>A field experiment was conducted to evaluate the effects of old jute seed powder (≥3 years old) on soil fertility and jute production using the high yielding variety of jute (<em>Corchorus olitorius </em>L.) O-9897 as the test plant. Six treatments of jute seed powder (JSP) and recommended dose of chemical fertilizers (RDF) with three replications were as T<sub>1</sub>: Control, T<sub>2</sub>: JSP 5 t/ha + ¼ RDF, T<sub>3</sub>: JSP 5 t/ha + ½ RDF, T<sub>4</sub>: JSP 5 t/ha + ¾ RDF, T<sub>5</sub>: RDF, and T<sub>6</sub>: JSP 5 t/ha. The growth and yield of jute were found to be the maximum for the treatment T<sub>4</sub> (JSP+ ¾ RDF), where the plant height, base diameter, fiber yield and stick weight were increased 147, 85, 177, and 125%, respectively over the control. The highest contents of organic carbon, nitrogen, phosphorus, potassium, sulfur, calcium, and magnesium in soil were also observed for the treatment T<sub>4</sub>. The sole application of jute seed powder increased the growth and yield of jute as well as the contents of nutrients in soil compared to the control; however, inputs of the jute seed powder in combination with the chemical fertilizers showed better results in improving soil fertility and jute production.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 33-</em><em>40</em></p> 2020-01-14T10:37:57+00:00 ##submission.copyrightStatement## Larvicidal effects of some plant seed extracts on Anopheles annularis Vander Wulp and Culex quinquefasciatus Say (Diptera: Culicidae) 2020-01-22T10:02:35+00:00 M Nasiruddin MA Azadi MR Chowdhury RAH Tonni <p>Larvicidal effects of distilled water, 50% ethyl alcohol, acetone and methanol extracts on seed of four plants viz. <em>Sinapis alba </em>(Linn.), <em>Carica papaya </em>(Linn.), <em>Momordica charantia </em>(Linn.) and <em>Capsicum annuum </em>(Linn.) were studied upon the mosquito larvae of <em>Anopheles annularis </em>Vander Wulp and <em>Culex quinquefasciatus </em>Say under normal laboratory conditions with average temperature and relative humidity of 31.1<sup>o</sup>C and 57.6%, respectively. Percentage mortality, probit mortality, chi-square and ANOVA values for the larvae, extracts and concentrations were calculated for 24 hours exposure period. Mortality was dose dependent<em>. </em>The values of LC<sub>50</sub> of the seeds of <em>S. alba </em>on <em>An. annularis </em>at the application doses for the distilled water, 50% ethyl alcohol, acetone and methanol extracts were 3431.791, 1038.363, 1254.810 and 2269.975 ppm, respectively; for <em>C. papaya </em>were 804.008, 403.294, 597.165 and 573.241 ppm, respectively; for <em>M. charantia </em>were 10593.241, 5017.710, 5650.191 and 6075.204 ppm, respectively; and for <em>C. annuum </em>were 1274.968, 4637.201, 1604.852 and 1905.692 ppm, respectively. The values of LC<sub>50</sub> of <em>S. alba </em>seeds on <em>Cx. quinquefasciatus </em>at the application doses for the distilled water, 50% ethyl alcohol, acetone and methanol extracts were 1415.311, 432.996, 569.701 and 770.250 ppm, respectively; for <em>C. papaya </em>were 705.599, 385.688, 341.003 and 481.067 ppm, respectively; for <em>M. charantia </em>were 7764.154, 4496.464, 5353.759 and 5825.031 ppm, respectively; and for <em>C. annuum </em>were 2173.631, 1311.538, 78.748 and 182.869 ppm, respectively. Of the four plant seed extracts, <em>C. papaya </em>seed extracts were the most toxic for both the mosquito species.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 41-</em><em>52</em></p> 2020-01-14T10:41:23+00:00 ##submission.copyrightStatement## Fish species using the fish passage between Jamuna and Bangali river at Sariakandi, Bogra 2020-01-22T10:02:35+00:00 M Zaman MN Naser <p>Sariakandi fish pass is unique connecting Jamuna and Bangali rivers through an engineered channel. A study was conducted on the fish pass aiming to improve fish diversity in north-west Bangladesh. Sampling at the fish pass, market census, interviewing the locals and focus group discussion were done to collect data from the study area. A total of 69 fish species under 9 orders and 26 families were recorded. Cypriniformes (22 species) was the most dominant order followed by Siluriformes (21 species), Perciformes (13 species), Clupeiformes (4 species), Synbranchiformes (4 species), Osteoglossiformes (2 species), Mugiliformes (1 species), Anguilliformes (1 species) and Tetraodontiformes (1 species). In total 30 threatened species in Bangladesh and globally recognized 9 species were recorded. This fish pass is not working during the dry or winter seasons but helps in the diversified fish migration diversity of Bengali and Jamuna river system during the flood time of Bangladesh. The present study recommends establishing effective fish passages in flood protection structures or dams in Bangladesh to retain the connectivity of fish migration routes and the improving of fish diversity.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 53-62</em></p> 2020-01-15T09:30:56+00:00 ##submission.copyrightStatement## Diversity and abundance of parasitic wasps (Insecta: Hymenoptera) of Bangladesh 2020-01-22T10:02:35+00:00 S Mazumdar MI Miah <p>A survey was conducted to study the diversity and population of parasitic Hymenoptera by using Malaise traps, from March 2014 to February 2015 in Chittagong University and Rajshahi University Campus. A total number of 173 genera was identified under 53 subfamilies, 23 families and 7 super families. Among the super families, the highest percentage of species individuals (59%) in Chalcidoidea, and of genera (55%) in Ichneumonoidea were recorded. The Species Richness (SR), H or H’, H<sub>max</sub>, Evenness, Community dominance and Question of similarity indices were applied to determine the diversity and abundance of parasitic hymenoptera.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 63-</em><em>68</em></p> 2020-01-15T09:31:33+00:00 ##submission.copyrightStatement## Influence of vermicompost and npk on the growth and protein content of boro rice (Oryza sativa L.) 2020-01-22T10:02:35+00:00 KN Nishi S Rahman K Nakamura MK Rahman <p>Influence of vermicompost (2.5, 5, 7.5 and 10 ton/ha), Nitrogen (12, 24, 36, 48 and 60 kg/ha), phosphorus (4, 8, 12, 16 and 20 kg/ha) and potassium (10, 20, 30, 40 and 50 kg/ha) on the growth and protein contents of Boro rice (<em>Oriza sativa </em>L<em>.</em>) was examined. Highest height (93.03cm), leaf number (23 no/plant), highest productive plants observed (8.67 no/pot), vegetative plants (8.0 no/pot), dry weight of panicle per plant (9.45 g), length of panicle (22.37 cm), number of grains per panicle (153.33),1000-grain weight (21.56 g) and the maximum dry weight (28.15 g/plant) were observed in VC<sub>10</sub> ton/ha + N<sub>12</sub>P<sub>4</sub>K<sub>10</sub> kg/ha treatments. Highest concentrations of protein content (29.875%), P (0.478%), K (5.20%) and S (0.182%) were in N<sub>60</sub>P<sub>20</sub>K<sub>50</sub> kg/ha. Results showed that the overall best growth performance and yield were achieved in VC<sub>10</sub> ton/ha + N<sub>12</sub>P<sub>4</sub>K<sub>10</sub> kg/ha treatments.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 69-</em><em>74</em></p> 2020-01-15T09:45:31+00:00 ##submission.copyrightStatement## Taxonomic account of orb-weaving spider genus Cyrtarachne Thorell, 1868 (Araneae: Araneidae) of Bangladesh 2020-01-22T10:02:35+00:00 V Biswas D Raychaudhuri <p>A taxonomic study on some orb-weaving spiders of the genus <em>Cyrtarachne </em>Thorell, 1868 (Araneae: Araneidae) were carried out from different areas of Bangladesh. Two species were identified in this study namely <em>C. biswajiti </em>n. sp. and <em>C. sundari </em>Tikader. <em>C. biswajiti </em>has described as new to science. Illustrated descriptions of the species were provided herewith.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 75-</em><em>82</em></p> 2020-01-15T09:45:38+00:00 ##submission.copyrightStatement## Effects of lead on growth, yield and mineral nutrition of rice (Oryza sativa L.) 2020-01-22T10:02:34+00:00 P Jasmin WZ Prian MN Mondol SM Ullah AS Chamon <p>A pot experiment was conducted to evaluate the effect of lead (50, 100, 150 and 200 mg kg-1) on rice (<em>Oryza sativa</em>) and remediation of metal contamination by applying cow dung, poultry litter and lime to alleviate lead toxicity. The lengths, fresh and dry weights of shoot, root and macronutrients decreased with increasing level of lead compared to the control. The maximum reduction was observed in the pots treated with 200 mg kg<sup>-1</sup> lead (19.50 and 20.03% for grain, 17.15 and 19.75% for shoot and 17.96 and 30.02% for root on the fresh and dry weight, respectively). The highest reduction in macronutrient content was observed in 200 mg kg<sup>-1</sup> lead treated pot where N, P, K, Ca and Mg concentrations were reduced by 31.14, 47.44, 22.49, 21.84 and 31.58% for shoot and 28.95, 55.64, 37.5, 49.33 and 23% for root, respectively. On the other hand lead concentration in roots and shoots were increased with increasing lead treatment compared to the control. Treatments of the amendments (cow dung, poultry litter and lime) had positive effects though cow dung outshining the rest of them. This particular organic matter had considerable decreasing impacts in lead uptake by rice. Cow dung treated pots increased fresh and dry weight by 31.48 and 32.07% for grain, 14.08 and 35.30% for shoot and 57.09 and 34.48% for root compared to pot treated with 100 mg kg<sup>-1</sup> lead. Cow dung remediated lead concentration by 48.85, 65.00 and 62.00% for grain, shoot and root, respectively.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 83-</em><em>92</em></p> 2020-01-15T10:03:40+00:00 ##submission.copyrightStatement## Some aspects of shrimp farming systems and shrimp production management: Bangladesh perspective 2020-01-22T10:02:34+00:00 AK Sarkar MN Islam FH Ansary <p>Shrimp is one of the leading exportable seafood products in Bangladesh. In the 2017-2018 financial year the country has exported 36168 MT products. Present research work was conducted in three Upazilas (Kaliganj, SyamNagar and Assasuni) in Sathkira district. Three different farming practices (organic, traditional and control) were selected for the research programme. The working farmers in the farming practices were found to follow the traditional farming in the early times. Average production was found 275 kg/ha in the traditional farming practices. This is the lowest shrimp production in the world. Reasons are lack of better technology, dearth of quality seed and feed and effect of shrimp diseases. Small-scale organic shrimp farming practice was found to maintain better production and profitability in the three experimental Upazilas. Three different farming practices (viz. organic, traditional and control/ extensive farming) were taken under interview to collect data. A comparison of the production (kg/ha/yr) of three years’ time (2012 to 2014) was made for analysis in the study. The highest production rate was recorded in organic shrimp farming. It was 13.16% higher than the traditional and 15.14% higher than the control/extensive shrimp farming system. Traditional shrimp farming production was 1.98% higher than that of the control/extensive shrimp farming. Percentage of gross sell of organic system was 14.01% higher than traditional and 15.89% higher than that of the control/extensive shrimp farming. The traditional shrimp gross sell was 1.87% higher than the control shrimp. Interviews and PRA (Participatory Rural Appraisal) method were used for the collection of data. The main research question was ‘effect dose’ on the overall production, income and impact on biodiversity. Recording data showed that the organic farming practice is more sustainable and environmentally sound system. Organic farming system showed less input cost and higher production value. Organic shrimp farming system increases image value of Bangladesh in the international market.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 93-</em><em>100</em></p> 2020-01-15T10:03:53+00:00 ##submission.copyrightStatement## Phytoplankton flora of Tanguar Haor ecosystem of Bangladesh: Chlorophyta 2020-01-22T10:02:34+00:00 MAH Bhuiyan A Kowser SAMS Islam M Mohid MR Islam SA Kakoly K Asaduzzaman M Khondker <p>The qualitative and quantitative aspects of phytoplankton population belonging to the green algae (Chlorophyta) from Watch Tower and Rauar Station of Tanguar Haor, Sunamganj were studied. In the study, a total of 39 species of three Orders under the algal Division Chlorophyta was worked out. Their photomicrographs and individual densities in the pelagic community of phytoplankton over a study year of 2016 and 2017 are discussed. In Volvocales, <em>Volvox carteri </em>Stein, in Chlorococcales, <em>Coelastrum microporum </em>Nägeli and in Zygnematales, <em>Staurastrum paradoxum </em>Meyen represented the highest number of population in the community. Rauar Station was found to contain the lesser number of phytoplankton densities compared to Watch Tower Station.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 101-</em><em>106</em></p> 2020-01-15T10:32:54+00:00 ##submission.copyrightStatement## Insecticidal effects of two medicinal plants Polygonum hydropiper L. and Abrus precatorius L. leaves against the rice weevil Sitophilus oryzae L. (Coleoptera: Curculionidae) 2020-01-22T10:02:34+00:00 SC Bhattacharjee MM Matin M Nasiruddin <p>During the study, the leaves of two medicinal plants, <em>Polygonum hydropiper </em>and <em>Abrus precatorius </em>were extracted with water, ethanol, methanol and petroleum ether solvents and tested against the rice weevil <em>S. oryzae </em>L. for insecticidal properties. Response varied with plant species. The mortality of adults increased with increasing dose concentrations from 1000 ppm to 5000 ppm each solution, with an exposure time of 72 hours. LC<sub>50</sub> values calculated were found to be 15091.436 ppm with water, 5051.534 ppm with ethanol, 5111.063 ppm with methanol and 4305.348 ppm with petroleum ether extracts of <em>P. hydropiper </em>and 9687.292 ppm with water, 6263.849 ppm with ethanol, 4682.683 ppm with methanol and 3222.984 ppm with petroleum ether extracts <em>of Abrus precatorius </em>leaves corresponding their concentrations of the leaf extract solutions at 1000ppm, 2000 ppm, 3000 ppm, 4000 ppm and 5000 ppm respectively. The results of the study showed that methanol and petroleum ether extrcts of <em>P. hydropiper </em>and ethanol, methanol and petroleum ether extracts of <em>A. precatorius </em>showed good toxicity. It appeared that the leaf extracts had some insecticidal activities against <em>S. oryzae </em>adult.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 107-1</em><em>14</em></p> 2020-01-15T10:33:06+00:00 ##submission.copyrightStatement## Tree species diversity in the forest of Renikhayong para village in Bandarban, Bangladesh: a case study 2020-01-22T10:02:34+00:00 M Jannat M Kamruzzaman MA Hossain MK Hossain <p>The study was conducted to explore tree species diversity of Renikhayong para Village Common Forest (VCF) of Bandarban hill district. Stratified random sampling was carried out to assess the tree species diversity of the VCF. Renikhayong Para VCF with an area of 40 acres of land has more than 85 tree species belonging to 31 families, where Euphorbiaceae family was dominant containing 11 species followed by Rubiaceae (7 species), Moraceae (7 species), Meliaceae (5 species), Mimosaceae (5 species), Combretaceae (4 species), Lauraceae (4 species) and Anacardiaceae (3 species). Dominant tree species was <em>Grewia nervosa</em>. Renikhayong para VCF has diverse floristic resources that are known from the Shannon-Wiener’s diversity index (4.007), Simpson’s diversity index (0.028), Margalef’s richness index (13.21) and Species evenness index (0.90). However, number of species and number of individuals both were highest in the height range of 5 - &lt;10 m. Similar trend was observed in dbh classes. Number of individuals were highest in dbh range of 5 - &lt;15 cm and the lowest in <strong>≥ </strong>55 cm. The results depict the presence of maximum small trees in the VCF and decreasing the number of trees with the increase of tree height (m) and dbh (cm). Presence of diverse tree species and diversity indices indicate the importance and potential of the VCF for conservation and sustainable use.</p> <p>J. Biodivers. Conserv. Bioresour. Manag. <em>2019, 5(2): 115-</em><em>126</em></p> 2020-01-15T10:34:45+00:00 ##submission.copyrightStatement##