Bangladesh Journal of Zoology最新文献

{"title":"Present status of Seaweed resources in Bangladesh: A review on the diversity, culture methods and utilization","authors":"Md Shoebul Islam, Mohammad Khairul Alam Sobuj, HM Rakibul Islam, Md. Eilious Hosain, M. Rashid","doi":"10.3329/bjz.v50i3.65537","DOIUrl":"https://doi.org/10.3329/bjz.v50i3.65537","url":null,"abstract":"Seaweeds are one of the most potential aquaculture commodities in Bangladesh. It has a long back history of being used for its nutritional and pharmaceutical importance. This review summarizes seaweeds diversity and its culture, distribution and possible applications and uses in Bangladesh. Seaweed floras are distributed along the entire coastline, however, the higher abundance of these have found in the St. Martin Island, Cox's Bazar, and Sundarbans mangrove forest periphery. These included around 200 species and belong to 94 genera. About 12 of these genera, including Hypnea, Gracilaria, Gelidium, Enteromorpha, Halimeda, Padina, Dictyota, Caulerpa, Hydroclathrus, Sargassum, Kappaphycus, and Porphyra have substantial commercial importance. A total of 5,000 metric tons of seaweeds are likely available along the entire coastline between October and April. However, seaweeds commodity and its aquaculture production have a great potential in the coastal region of Bangladesh. Furthermore, the sustainable development of this industry could bring numerous benefits such as rural development, employment opportunity and income generation, women empowerment, disease prevention, and proper utilization of land. Therefore, this sector needs more attention for its expansion activities include culture, usages and bioactive compound developments. Additionally, seaweeds cultivation could have numerous environmental benefits include ecosystem services, removal of hazardous nutrients and pollutants, metal toxicants uptake, in turn estuaries and seas tackle pollution in natural process.\u0000Bangladesh J. Zool. 50(3): 283-307, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88247958","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":"Zooplankton Diversity and Ecological Variations of Coastal Wetlands of Bakerganj, Bangladesh","authors":"P. K. Mozumder, Md. Niamul Naser","doi":"10.3329/bjz.v50i3.65539","DOIUrl":"https://doi.org/10.3329/bjz.v50i3.65539","url":null,"abstract":"Ecology and diversity of zooplankton species in relation to some physico-chemical parameters at three sites namely Thana Health Complex Pond, Tulatoli River and Harun Dakua’s Pond of the coastal ecosystems of Bakerganj were studied from January 2008 to December 2009. A total of 56 zooplankton species were recorded out of which 35 were rotifers, 6 protozoan, 8 copepods, 5 cladocerans and 2 ostracods species. During study, rotifera was the most abundant group (61.44 % in Thana Health Complex pond, 38.36 % in Tulatoli River, and 86.03 % in Harun Dakua’s pond), while the ostracoda were the least abundant group (0.2 % in Harun Dakua’s pond). The highest monthly average value of zooplankton was 707.75 ± 189.56 indv /L at Thana Health Complex pond and the lowest was 127.42 ± 19.95 indv /L at Tulatoli River of Bakerganj. Zooplankton species richness (R1 and R2) was comparatively higher (R1: 1.63 ± 0.10; R2: 0.64 ± 0.06) in Harun Dakua’s pond while both the species diversity (Shanon Weiner Index) (H' = 0.87 ± 0.08; eH' = 2.52 ± 0.17) and species evenness (E1 and E2) (E1 = 0.44 ± 0.04; E2 = 0.43 ± 0.05) were higher in the Tulatoli River. The zooplankton population showed positive correlation with physico-chemical parameters like water temperature, air temperature and water depth, whereas negatively correlated with pH, DO, TDS, conductivity and salinity with a few exception.\u0000Bangladesh J. Zool. 50(3): 321-335, 2022   ","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89818144","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":"Zoological Garden: An essential tool for Education and Research","authors":"Md. Niamul Naser","doi":"10.3329/bjz.v50i3.65536","DOIUrl":"https://doi.org/10.3329/bjz.v50i3.65536","url":null,"abstract":"Abstract not available\u0000Bangladesh J. Zool. 50(3): 281-282, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78127187","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":"Differential Effects of Temperature and Diet on the Body size-Fecundity Relationship of Aedes albopictus (Diptera: Culicidae)","authors":"A. Sultana, T. Hasan, D. Ghosh","doi":"10.3329/bjz.v50i2.62057","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62057","url":null,"abstract":"To investigate whether Aedes albopictus females cease reproduction under adverse conditions, they were offered manipulated diets (high and low diets) at 26°C and 28°C. Both of the diets showed a profound effect on development time and body size. Lower temperature and high diet resulted in larger body size, and that further affected fecundity. There was an insignificant relationship between the number of eggs laid and body size excluding high diets at a lower temperature. As fecundity increased with the body size, Ae. albopictus laid more eggs at 28°C under a high diet. Ae. albopictus reserved more eggs at 28°C, however, body size and egg retention were significantly related under a lower diet at 26°C and 28°C. Our findings indicate that the difference in warm temperature and diet condition contributed to fecundity and the results might help in vector.\u0000Bangladesh J. Zool. 50 (2): 251-259, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82402687","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":"Effects of Stocking Density on Production Performance of nile Tilapia (Oreochromis niloticus) in grow-out Culture Cages","authors":"Md Robiul Awal Hossain, Md. Eilious Hosain, Anika Tabassum, Md. Niamul Naser","doi":"10.3329/bjz.v50i2.62056","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62056","url":null,"abstract":"A 120-day cage grow-out production performance of Nile Tilapia, Oreochromis niloticus was conducted in the Dakatia river, Echoli, Chandpur to identify an optimal stocking density. The three stocking densities were used at 30, 50, and 70 tilapia m-3 under three treatments with triplicate. The initial average weight of tilapia fingerlings at 32.31±9.59 g was stocked. Final weight, specific growth rate, and survival were significantly (p < 0.05) higher in the 30 tilapia m-3 stocking density than those in the 50 and 70 tilapia m-3 stocking densities. The best food conversion ratio of 1.47 was found in the 30 tilapia m-3 stocking density and followed by 2.0 and 2.90 in the 50 and 70 tilapia m-3 stocking densities, respectively. The production was comparable (p > 0.05) between the 50 and 70 tilapia m-3 stocking densities; however, the net profit was higher (p < 0.05) in the 50 tilapia m-3 stocking density group compared to the two other stocking density groups. This study suggests a stocking of density at 50 tilapia m-3 to increase Nile Tilapia O. niloticus productivity in the riverine cage culture system.\u0000Bangladesh J. Zool. 50 (2): 239-250, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73199632","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":"New Record of Bar-Necked Keelback, Fowlea schnurrenbergeri (Kramer, 1977) (Squamata: Colubridae) in Bangladesh","authors":"Iftiker Mahamud, Adnan Azad Asif, A. R. Shome, Md Mahfuzur Rahman","doi":"10.3329/bjz.v50i2.62059","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62059","url":null,"abstract":"Abstract not available\u0000Bangladesh J. Zool. 50 (2): 273-276, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89808603","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":"Coleopteran Diversity at the three selected areas in Dhaka City, Bangladesh","authors":"S. Afroz, Md. Aminul Islam, M. Alim, F. Zohora","doi":"10.3329/bjz.v50i2.62052","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62052","url":null,"abstract":"The diversity of coleopteran species was studied at three different selected areas in Dhaka city from December 2016 to November 2017. A total of 11,397 individuals of 56 coleopteran species belonging to 50 genera, including 15 families, were recorded in the study areas during the study period. Of them, 47 species (4916 individuals) of 13 families were found at the Ramna Park, 48 species (2441 individuals) of 15 families at the National Botanical Garden, and 42 species (4040 individuals) of 11 families at the Atomic Energy Research Establishment (AERE) campus. A total of 30 species, 25 genera, and 11 families were common in these three study areas. At the Ramna Park, the highest species richness included the family Chrysomelidae (34.04%), and the lowest was under the six families including Staphylinidae, Bostrichidae, Nitidulidae, Geotrupidae, Erotylidae, and Scarabaeidae (2.13%). At the National Botanical Garden, the maximum number of species was recorded under the family Chrysomelidae (6.24%), and the lowest was under seven families including Staphylinidae, Bostrichidae, Nitidulidae, Geotrupidae, Erotylidae, Elateridae, and Dermestidae (2.08%). The maximum number of coleopteran species was identified under the family Chrysomelidae (35.71%), and the lowest was under six families including Staphylinidae, Cerambycidae, Nitidulidae, Geotrupidae, Elateridae, and Dermestidae (2.38%) at the AERE campus. The Shanon’s Diversity Index (H′) and Simpson’s Index (λ) indicate high coleopteran diversity at the Ramna Park (H′=3.41, λ=0.05), the AERE Campus (H′=3.07, λ=0.06), and the National Botanical Garden (H′=2.93, λ=0.08). The high species evenness in the Ramna Park (J’= 0.89) and the AERE campus (J’= 0.82) indicates that the species were evenly distributed, whereas at the National Botanical Garden (J’= 0.76) they were comparatively less evenly distributed. The calculated Sorenson’s Coefficient (CC) is 0.66, indicating that these three communities were fairly similar or overlapped. The Community Dominances were 21.03%, 32.16% and 18.66% for the Ramna Park, National Botanical Garden, and AERE campus, respectively.\u0000Bangladesh J. Zool. 50 (2): 185-200, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87318645","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":"Whiteleg shrimp Litopenaeus vennamei: Current status, future prospects and opportunities for Bangladesh Aquaculture","authors":"Md. Niamul Naser, M. Sarker, Md. Eilious Hosain","doi":"10.3329/bjz.v50i2.62051","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62051","url":null,"abstract":"Shrimp aquaculture plays the key role in Bangladesh seafood export industry. It includes the species of Tiger prawn Penaeus monodon, and Giant river prawn Macrobrachium rosenbergii, which have been widely farmed after 1980s. The industry is severely damaged due to diseases outbreaks in hatcheries, nurseries and grow-out ponds since 2000, thus this sector shows shrinkage from global export market. However, the last few decades an alternate aquaculture decapod species, Whiteleg shrimp Litopenaeus vannamei has been recognized as the most important in world-seafood export item. Bangladesh aquaculture has very recently been introduced with the Whiteleg shrimp L. vannamei for shrimp production boost up. This review focusses on the current state of arts for L. vannamei aquaculture techniques and their possible implication to farming in Bangladesh. Recently, several Whiteleg shrimp pilot scale farming were initiated which showed promising production ranged from 5.0 to 8.9 MT/ha. Private entrepreneurs now become interested and it is perceived that the Whiteleg shrimp could gear up shrimp production in near future in terms of better production performance, technology development and extension work besides other indigenous culture-shrimp species. By introducing this shrimp, we forecast that, depending upon the technology adoption in present culture areas, the export frozen seafood earnings from shrimp sector will increase up to 5 to 10 folds from the present. Thus, proper understanding and knowledge based innovative approach for its sustainable rapid extension and strategies is in need. This review suggests the regional reproducible pilot culture program for hatchery, nursery and grow-out under controlled environment ensuring better footprint and low residues impact to natural aquatic systems. Adaptive research should be initiated to develop intensive or super-intensive culture techniques besides the traditional practices in the selected confined areas. The pond culture, biofloc farming, aquamimicry farming and green water raceways could be excellent options for L. vannamei culture in Bangladesh.\u0000Bangladesh J. Zool. 50 (2): 143-184, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89184374","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 of Ribbon Fish (Eupleurogrammus Sp.) Using Partial Sequence of Mitochondrial COI Gene","authors":"Sristy Saha, Sawda Jaman, Hafisha Khatun Anee, Ashfaqul Muid Khandaker, M. S. Alam, R. Begum","doi":"10.3329/bjz.v50i2.62055","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62055","url":null,"abstract":"Dry fish is considered as a delicacy in the menu of many people of Bangladesh. The most economically important marine and freshwater dried fishes are ribbon fish, bombay duck, olive barb, pomfret, shrimp, etc. In this study, fresh ribbon fish sample was collected from Cox's Bazar and morphologically identified as ribbon fish. The collected fish was confirmed through a molecular technique using mitochondrial COI gene (cytochrome c oxidase subunit I) to avoid morphological ambiguity, which is first reported data from Bangladesh. Partial sequence of this COI gene was amplified using a genus specific universal primer set. The target nucleotide sequence of COI gene was determined successfully with 616 bp length and the ribbon fish was identified as Eupleurogrammus sp. Within the amplified region GC and AT content were 45.5% and 54.5%, respectively. 16.88% interspecific polymorphism was observed when compared with other species under genus Eupleurogrammus collected from Gen Bank database. This sequence will be used as molecular bar code for authentic identification of Eupleurogrammus sp. at genus level.\u0000Bangladesh J. Zool. 50 (2): 231-238, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78736633","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 Veterinary Ectoparasites in Brahmanpara, Burichong and Debidwar Upazilas in Comilla District, Bangladesh","authors":"I. Mannan, T. Akter, Afm Shahriar, Sahar Ahmad","doi":"10.3329/bjz.v50i2.62053","DOIUrl":"https://doi.org/10.3329/bjz.v50i2.62053","url":null,"abstract":"The study was conducted to assess the prevalence of veterinary ectoparasite of cattle and goats in Brahmanpara, Burichong and Debidwar upazila of Comilla district. In total 560 animals (335 cattle and 225 goats) were examined; among them 373 animals (217 cattle and 156 goats) were found to be infested with several species of ectoparasites. Veterinary animals (cattle and goats) in Brahmanpara upazila showed the highest prevalence (71.80%) and lowest intensity (6.19). Debidwar upazila showed lowest prevalence (55.47%) and highest intensity (12.20). Cattle in Brahmanpara showed highest prevalence (78.50%) and lowest intensity (5.59) and Debidwar upazila showed lowest prevalence (43.00%) and highest intensity (13.66). Goats in Debidwar upazila showed highest prevalence and intensity (100% and 9.97, respectively). Burichong upazila showed lowest prevalence (64.22%) and Brahmanpara showed lowest intensity (6.84). The study of ectoparasites is important, not only for livestock but also for humans, since fleas, lice and ticks also parasitize humans, especially those who work in close contact with the affected animals. Therefore, more studies are needed to estimate the economic losses and control measures of veterinary animal parasitic diseases that are caused by ectoparasites.\u0000Bangladesh J. Zool. 50 (2): 201-215, 2022","PeriodicalId":8702,"journal":{"name":"Bangladesh Journal of Zoology","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76315685","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}