Bangladesh Journal of Zoology <p>Bangladesh Journal of Zoology is an official scientific journal of the Zoological Society of Bangladesh published twice annually in June and December in English. Full Text articles now available.</p> en-US (Prof. Dr. Md. Anwarul Islam) (Md Fahmid Uddin Khondoker) Sun, 23 Dec 2018 10:28:20 +0000 OJS 60 New host record of some gastrointestinal parasites of Irrawaddy squirrel (Callosciurus pygerythrus) from Chittagong, Bangladesh <p>Gastrointestinal (GI) tract of 60 Irrawaddy squirrels (<em>Callosciurus pygerythrus</em>) were collected between September 2013 and August 2014 from four different spots of Chittagong University campus and its adjacent areas to study the ento-helminth fauna. Eight different parasite species were identified - one belonging to Cestoda and represented by <em>Hymenolepis diminuta</em>, and the remaining seven were to Nematoda <em>viz., Strongyloides callosciurus</em>, <em>Trichuris ovis</em>, <em>Monodontus </em>sp., <em>Cyclodontostomum purvisi</em>, <em>Moguranema nipponicum</em>, <em>Ascarops talpa </em>and <em>Syphacia obvelata</em>. The nematodes were found as dominant species most preferably inhabiting the small intestine. The present host is the new host record for all of these parasites and <em>S. callosciurus, T. ovis</em>, <em>Monodontus </em>sp., <em>M. nipponicum </em>and <em>A. talpa </em>are the new records for Bangladesh too. All these parasites have very wide host specificity, though most of them are restricted to various rodent hosts but <em>H. diminuta </em>and <em>S. callosciurus </em>were found to have more wider specificity, including other vertebrates too. All identified parasites might have been acquired from the environment where the host inhabits, since host specificity perspective no parasites were found to be specific to the present host. <em>H. diminuta </em>and <em>Syphacia obvelata </em>might have zoonotic role to other wild animals and human and vice versa.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 87-103, 2018</p> Md Afzal Hussain, Rajib Acharjee, Benazir Ahmed ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Current status and barriers to fisheries comanagement: Evidences from an Oxbow lake of Bangladesh <p>Co-management of common property aquatic habitats are increasingly implemented with a view to increasing fish production, ensuring fishers’ rights and to conserve biodiversity. This study investigates the current status and identifies barriers to fisheries management in an oxbow lake (<em>baor) </em>at Jessore district, Bangladesh. Using interviews, focus group discussions and secondary data, this study revealed that both capture and culture fisheries are practised at the same time at the same water-body. As the wetland was used solely for capture fisheries before, the introduction of aquaculture practice has increased the total fish production and income for some people. However, it has reduced the access to poor fishers and fish biodiversity. Particularly the biodiversity of <em>Channa </em>sp, <em>Puntius </em>sp, <em>Mastacembelus </em>sp, <em>Mystus </em>sp, and <em>Colisa fasciatus </em>has been reduced. A range of climatic, institutional, economic and social barriers have facilitated the reduced access of poor fishers and biodiversity. To overcome the barriers and ensure sustainable management of the <em>baor </em>this study proposes to implement a fair leasing system, increase financial and human resources together with an ecosystem-based approach to <em>baor </em>management.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 105-116, 2018</p> Md Monirul Islam, Chandan Kar, Goutam Kumar Kundu, Gouri Mondal, Mohammad Shahneawz Khan ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Abundance and foraging behavior of native insect pollinators and their effect on mustard (Brassica juncea L.) <p>A field experiment was carried out in Gazipur, Bangladesh to find out the abundance and behavior of native insect pollinators and their impact on the yield and seed quality of mustard (<em>Brassica juncea </em>L.). Total 8 species of insects under 8 different families in 3 orders were found as pollinator and their abundance ranged from 0.5 to 6.6/30 sweeps. The pollinator insects revealed statistically higher abundance compared to pest, predator and other category. The pollinators were most abundant at 11.0 hrs of the day and differed in their landing duration on flower. Ant and cabbage butterfly stayed statistically similar and longer time (24.1 and 23.5 sec., respectively). The highest yield (994.3 kg/ha) was obtained from insect managed pollination treatment followed by open (759.7 kg/ha) and enclosed condition (272.3 kg/ha). Insect pollination revealed higher percentage of germination, t100-seed weight, per cent oil and protein content but the results did not differ statistically.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 117-123, 2018</p> Eeshita Mandal, Md Ruhul Amin, Habibur Rahman, Abdul Mannan Akanda ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Detection of pathogens in waste water and soil by Taqman Array Card (TAC) system <p>The study was conducted in an a urban slum area of Dhaka city. The environmental samples (soil and water) were collected from Mirpur Bihari camp area including Madrasha camp, Muslim camp and ADC camp. The main areas of sample collection were near the sewerage lines, chicken coop, goat house etc. In the present investigation, out of 28 wastewater samples, <em>Entamoeba, Shigella, Aeromonas, Campylobacter, Vibrio cholerae, Blastocystis, Salmonella, Trichuris, Ancylostoma, Plesiomonas, Bacteroides fragilis </em>and Rota virus pathogens were recorded. In wastewater samples, 14.29% had single infection, 85.71% double infection, whereas, observation on 20 soil samples by TAC system, total 12 types of pathogens were recorded such as <em>Shigella, Aeromonas, Campylobacter, Vibrio cholerae, Blastocystis, Salmonella, Plesiomonas, Bacteroides fragilis </em>and Rota virus including <em>Entamoeba </em>sp<em>., Ancylostoma </em>sp. and <em>Trichuris </em>sp<em>.</em></p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 125-135, 2018</p> Fahmida Sarkar, Hamida Khanum, Rimi Farhana Zaman, Tahmina Ahmed, Md Khalid Eakbal Anik, Rashidul Haque ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Prevalence of ectoparasites in cattle (Bos indicus) of Jessore, Bangladesh <p>A study was carried out on 60 cattle and 34 (56.66%) were found infested with ticks and lice. Mean parasitic burden was 2.26 ± 0.37 per square inches in cattle. Two species of arachnids, <em>Haemaphysalis bispinosa </em>(31.66%) and <em>Rhipicephalus sanguineus </em>(28.33%) lice, <em>Linognathus vituli </em>(23.33%) were identified. Mean parasitic burden was high in case of <em>R. sanguineus </em>(4.33 ± 0.48) followed by <em>H. bispinosa </em>(2.89 ± 0.62) and least in <em>L. vituli </em>(1.28 ± 0.16). Prevalence of ectoparasites were relatively higher in young animals aged &gt; 1 - 3 year (66.66%) followed by in calf aged ± 1 year (50%) and lowest in adult aged &gt; 3 year (44.44%) in cattle. The mean parasitic burden was higher in case of young (2.8±0.60) followed by adults (1.75 ± 0. 41) and calves (1.5 ± 0.34). Infestation was higher in female (64.10%) than the male (42.85%). Prevalence of ectoparasites were relatively higher in summer (75%) followed by in winter (55%) and lowest in rainy season (40%). The mean parasitic burden was highest in summer (1.93 ± 0.64) followed by in winter (1.72 ± 0.54) and lowest in rainy season (1.5 ± 0.50).</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 137-145, 2018</p> Sharmin Musa, Tania Ahmed, Hamida Khanum ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Distribution range extension and first record of tonkin numbfish Narcine prodorsalis (Bessednov 1966) (Torpediniformes: Narcinidae) an electric ray in Bangladesh waters <p>Three Tonkin numbfish, <em>Narcine prodorsalis </em>were caught off the coast of Bangladesh in April 2018. Amongst these three specimens, one was morphometrically measured, photographed and transported to be persevered and catalogued at the zoological museum in the University of Dhaka. The specimens were morphologically identified using taxonomic keys and DNA samples (fin clips) have been collected for further studies. These specimens represent the first record of <em>Narcine prodorsalis </em>in Bangladesh waters and extend its distribution range. This is the first western most confirmed record of this species from its previously designated range in the western Pacific and Eastern Indian ocean. This contemporary record includes Bay of Bengal within its current distribution range.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 147-154, 2018</p> Alifa Bintha Haque, Nazia Hossain ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Growth performances and bacterial load of Heteropneustes fossilis (Bloch, 1794) using cinnamon as feed supplement <p>Cinnamon has different biological properties such as antioxidant, antimicrobial, antidiabetic and antiallergic. This study was carried out to investigate the effect of cinnamon as feed supplement on growth performances and bacterial load of <em>Heteropneustes fossilis</em>. Twenty fries were stocked in each 60 litre aquarium for a rearing period of 90 days. Commercial diet was used that contains 0.0% (control), 0.5%, and 1.0% cinnamon bark powder. The diet containing 1% cinnamon resulted in greater ADG, SGR, FCR and survival rate. Whereas, the diet containing 0.5% cinnamon resulted in greater condition factor and lower FCR. In most of the cases the diet containing 1% cinnamon showed lower amount of bacterial count than the controlled condition. Cinnamon could have an antibacterial activity antagonistic to <em>Vibrio </em>and <em>Aeromonas </em>as there was no count found in fish flesh samples after 90 days of culture. The findings of this study suggest that growth performances and bacterial load of <em>H. fossilis </em>were better in commercial feed containing cinnamon powder. It is recommended that fish farmers can use cinnamon as feed supplement to improve growth performance and reduce bacterial load during culture of <em>H. fossilis</em>.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 155-166, 2018</p> Mst Khadiza Begum, Md Mostavi Enan Eshik, Nusrat Jahan Punom, Md Minhazul Abedin, Mohammad Shamsur Rahman ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Nutrients impacts on the abundance of plankton in Penaeus monodon (Fabricius 1798) shrimp ponds at Dumuria, Bangladesh a Shifat Ara, Md Kamrujjaman, Kazi Ahmed Kabir, M Niamul Naser ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Evaluation of nutritional values of smoke cured riverine and marine hilsa (Tenualosa ilisha; Hamilton, 1882) <p>Present study was conducted to evaluate nutritional values of smoked hilsa fish (<em>Tenualosa ilisha</em>; Hamilton, 1882) in relation to its raw condition. Smoking is one of the processes of fish preservation from ancient period of our country. The nutrients values of the hilsa from two different regions were significantly (p &lt; 0.05) varied. The nutritional values were different before and after processing of hilsa. Riverine hilsa contains relatively more moisture (56.45 ± 0.51%) and protein (15.98 ± 0.50%) than marine hilsa. Fat (16.18 ± 0.45%) and salt (1.92 ± 0.18%) contents are higher in marine hilsa; whereas ash (8.34 ± 0.35%) content was higher in riverine hilsa. Minerals like iron (4.72 ± 0.08 mg/100 g) and calcium (481.77 ± 6.20 mg/100g) remain in large amount on marine hilsa but phosphorus (115.73 ± 4.36 mg/100 g) content remain high level in riverine hilsa. In addition, the protein (raw condition, 19.54 ± 0.47%, riverine; 17.12 ± 0.42%, marine and smoked condition, 29.64 ± 0.41%, riverine; 28.51 ± 0.51%, marine) and fat (raw condition, 16.41 ± 0.46%, riverine; 20.07 ± 0.39%, marine and smoked condition, 20.71 ± 0.47%, riverine; 23.31 ± 0.47%, marine) content were higher in abdominal region of riverine and marine hilsa both raw and smoked condition than head region (protein in raw condition, 11.21 ± 0.51%, riverine; 10.51 ± 0.53%, marine and smoked condition, 17.14 ± 0.42%, riverine; 15.69 ± 0.4%, marine; fat in raw condition, 9.04 ± 0.45%, riverine; 11.21 ± 0.51%, marine and smoked condition, 12.32 ± 0.44%, riverine; 14.56 ± 0.47%, marine) and caudal region (protein in raw condition17.21 ± 0.52%, riverine; 15.22 ± 0.66%, marine and smoked condition, 27.68 ± 0.44%, riverine; 26.73 ± 0.46%, marine; fat in raw condition, 14.05 ± 0.5%, riverine; 17.28 ± 0.47%, marine and smoked condition, 17.35 ± 0.43%, riverine; 19.18 ± 0.51%, marine).</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 177-184, 2018</p> Sumon Debnath, Gulshan Ara Latifa, Mohajira Begum, Md Abu Obaida ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Elasmobranch diversity with preliminary description of four species from territorial waters of Bangladesh <p>There is a significant lack of data regarding the biodiversity of elasmobranchs in the territorial waters of Bangladesh, since that sharks and rays are not targeted by commercial fishing industry, but rather encountered as a bycatch. This paper updated the diversity of elasmobranchs in the territorial waters of Bangladesh. The study was carried out to identify two coastal areas of Patharghata, Barguna and Cox's Bazar between October, 2015 and September, 2016. Using fish landing station survey techniques, total 20 species of elasmobranch were encountered, including eight species of sharks and 12 species of batoids, under 14 genera, ten families. This is the most expended field based records of elasmobranch fishes of Bangladesh.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 185-195, 2018</p> ABM Zafaria, - Shamsunnahar, Sanjay Chakraborty, Md Muzammel Hossain, Md Masud Rana, Mohammad Abdul Baki ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Effects of temperature and salinity on the decapsulation of Artemia cyst <p>A study was performed to determine to effect of salinities (20, 25, 28, 30, 32, 35 and 40 ppt) and temperatures (20, 24, 28, 30 and 32<sup>°</sup>C) on the decapsulation of <em>Artemia </em>cyst. The dry <em>Artemia </em>cyst were hydrated up to 2 hrs in fresh water at (26 ± 1<sup>º</sup>C) temperature with a density 0.3 g/ 50 ml water. Saline water was prepared using salt (NaCl) and hatching rate of <em>Artemia </em>cyst was counted after 36 hours of incubation. Highest hatching rate (72.59 ± 5.03), (75.84 ± 3.67), (74.45 ± 0.83), (89.38 ± 0.96), (76.46 ± 4.63), (70.58 ± 9.51) and (69.17 ± 0.70)% were observed in 20, 25, 28, 30, 32, 35 and 40 ppt salinities at 32, 28, 28, 24, 24, 24, and 28<sup>°</sup>C temperature, respectively. Lowest hatching rate (57.03 ± 3.67), (47.97 ± 8.06), (46.20 ± 8.17), (39.58 ± 10.12), (47.36 ± 7.04) (25.86 ± 8.10) and (20.57 ± 2.71) % were measured in 20, 25, 28, 30, 32, 35 and 40 ppt salinities at 30, 32, 32, 32, 32, 32 and 32<sup>°</sup>C, respectively. The maximum hatching rate (89.38 ± 0.96)% was found in 30 ppt salinity at 24<sup>°</sup>C temperature and minimum hatching rate (20.57 ± 2.71) % was observed in 40 ppt salinity at 32°C temperature. Therefore, 30 ppt salinity and 24<sup>ο</sup>C temperature could be the optimum salinity-temperature for <em>Artemia </em>cyst decapsulation.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 197-204, 2018</p> Md Kamrul Hasan, Md Golam Rabbane ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Host acceptance and oviposition behaviour of solitary wasp, Anisopteromalus calandrae (Howard) (Hymenoptera : Pteromalidae), A parasitoid of stored grain pests <p>The host acceptance and oviposition behaviour of the ectoparasitoid, A<em>nisopteromalus calandrae </em>(Howard) (Hymenoptera : Pteromalidae) was observed on unexposed (hidden) and exposed host of <em>Sitophilus oryzae </em>(L.) and <em>Rhyzopertha dominica </em>(F.) under laboratory conditions. The egg-laying behaviour was accomplished in eight phases in hidden hosts of <em>S. oryzae </em>i.e., inside wheat kernels but it was much shorter having five steps in those of exposed hosts. Average total time taken by a mated <em>A. calandrae </em>in unexposed host (inside wheat kernels) during different oviposition sequences was 55 minutes. On the other hand, average total time taken by a mated <em>A. calandrae </em>in exposed host of <em>S. oryzae </em>during oviposition sequences was 91.1 minutes. <em>A. calandrae </em>preferred fully developed <em>S.oryzae </em>grubs rather than half- grown pre-pupae and early pupae in exposed condition. Generally, eggs were laid on or near <em>S. oryzae </em>host larvae or pupae inside wheat kernel because of ectoparasitic nature of <em>A. calandrae. </em>More eggs are deposited in case of <em>S. oryzae </em>hosts at the abdominal region dorsally, sometimes eggs were laid on the meta-thoracic segment dorsally but rarely eggs were laid on late <em>S. oryzae </em>pupae prior to adult transformation. Oviposition by a mated <em>A. calandrae </em>female parasitoid was influenced by the host’s size and shape on exposed as well as unexposed (within seed kernel) conditions. Generally, the 3rd and the 4th instar larvae and pre-pupae of <em>S. oryzae </em>were preferred for egglaying in exposed condition. The parasite did not lay eggs on naked <em>R. dominica </em>larvae or pupae.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 205-216, 2018</p> KN Ahmed, CK Roy, JL Munshi, EA Zenat, SK Ghose ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 New records of rodent species in Bangladesh: taxonomic studies from rodent outbreak areas in the Chittagong hill tracts <p>Rodents are regarded as crop pests, significant reservoirs and vectors for many zoonotic diseases around the world. Basic taxonomic information of rodents present in a locality can help understand which species are responsible as crop pest in that habitat. The phenomenon of the 50-year cycle of gregarious bamboo flowering and rodent outbreaks in the Chittagong Hill Tracts (CHT) of Bangladesh, rodents trapping were carried out in four habitats from March, 2009 to December, 2011 in Ruma upazila of Bandarban hill district. Variety of traps were used to capture small mammals. The captured species were measured and identified using taxonomical dichotomous keys and DNA bar-coding performed in Australia. A total of 14 different small mammalian species were captured of which nine belonging to the Muridae family, and one species each of Spalacidae, Sciuridae, Tupaiidae and Soricidae families. The dominant small mammal species captured were <em>Rattus rattus </em>(54.06%) followed by <em>Mus musculus </em>(26.39%), <em>Rattus nitidus </em>(10.98%), <em>Suncus murinus </em>(5.45%), <em>Mus terricolor </em>(1.09%), <em>Mus cookii nagarum </em>(0.97%), <em>Cannomys badius </em>(0.16%), <em>Leopoldamys edwardsi </em>(0.12%), <em>Berylmys bowersi </em>(0.12%), <em>Vernaya fulva </em>(0.08%), <em>Rattus andamanensis </em>(0.08%), <em>Tupaia glis </em>(0.04%) and <em>Callosciuru</em>s <em>pygerythrus </em>(0.04%). <em>Rattus nitidus</em>, <em>Leopoldamys edwardsi, Vernaya fulva, Rattus andamanensis, Berylmys bowersi </em>and <em>Mus cookii nagarum </em>are new records of rodent species in Bangladesh<em>. </em>Ten individuals of <em>Mus </em>spp. (0.40%) were not identified to species level, requiring further genetic analysis to determine their species. The implications of these discoveries are discussed in terms of agricultural pests.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 217-230, 2018</p> Nikhil Chakma, Noor Jahan Sarker, Steven Belmain, Sohrab Uddin Sarker, Ken Aplin, Sontosh Kumar Sarker ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Occurrence of gastrointestinal Helminths in captive rhesus macaques (Macaca mulatta) <p>A total of 66 (sixty-six) fresh fecal samples were collected during July 2017 to October 2018 from rhesus macaques (<em>Macaca mulatta</em>) residing in Bangladesh National Zoo, Dhaka. Samples were analyzed applying formol-ether concentration technique. All the rhesus macaques, irrespective of age and sex, were found to be infested with one or more species of gastrointestinal (GI) helminth parasites. <em>Ascaris </em>spp. was noticed in all the fecal samples. Overall intensity of helminths was higher in male (38.53) that in female (31.04) comprising the maximum (58.08) in adult male (p &lt; 0.005). The highest intensity was of <em>Ascaris </em>spp. (3.33 ± 1.39) and found in adult male hosts. Young female rhesus macaques displayed the maximum intensity of <em>Trichuris </em>spp. (3.56 ± 0.73).</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 231-237, 2018</p> Taniza Tabasshum, Mandira Mukutmoni, Aleya Begum ##submission.copyrightStatement## Sun, 02 Dec 2018 00:00:00 +0000 New records of two Lutjanus species (Teleostei: Perciformes: Lutjanidae) with re-description of six lutjanids from Saint Martin’s Island of the Bay of Bengal, Bangladesh <p>Investigations on Snapper fish of the genus <em>Lutjanus </em>were conducted from October 2015 to April 2016 in the coral ecosystem of St. Martin’s Island, Bangladesh. Twenty one individuals of 8 species of <em>Lutjanus </em>were collected from local fishermen. Both morphological characters and DNA barcoding approach by mitochondrial cytochrome oxidase I subunit (COI) were used to confirm the identification of all species. Present study recorded the first national occurrence of two reef associated <em>Lutjanus </em>species (<em>L</em>. <em>xanthopinnis </em>and <em>L. indicus</em>). In addition six species (<em>L</em>. <em>rivulatus</em>, <em>L</em>. <em>lutjanus</em>, <em>L. vitta</em>, <em>L</em>. <em>lemniscatus</em>, <em>L</em>. <em>fulviflamma </em>and <em>L</em>. <em>johnii</em>) were re-described. Distinct morphological differentiation were found between more closely related species <em>L</em>. <em>xanthopinnis</em>, <em>L. vitta </em>and <em>L</em>. <em>lutjanus</em>. Three different appearances of <em>L</em>. <em>johnii</em>, two different appearances of <em>L</em>. <em>rivulatus </em>and <em>L</em>. <em>lemniscatus </em>were confirmed as same species. Phylogenetic analysis showed monophylotic clade for conspecific individuals and paraphyletic clade for congeneric individuals. Average genetic divergence for intraspecific level was 1.5% and 12.5% for interspecific level. Current study increased the number of <em>Lutjanus </em>species in Bangladesh from 15 to 17 and extended the distribution range of those new recorded species in northeastern part of the Bay of Bengal.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 239-253, 2018</p> Shilpi Saha, Sanjay Chakraborty, Subrina Sehrin, Abdullah Al Masud, Kazi Ahsan Habib, Mohammad Abdul Baki ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Recent records of large tooth sawfish Pristis pristis (Linnaeus, 1758) from Parerhat of Pirojpur district in the southwestern Bangladesh <p>Sawfishes are the most endangered cartilaginous fishes on earth with alarming global population decline due to by-catch and socio-economic value. A study on elasmobranch diversity in one of the landing sites of Bangladesh observed annual sawfish captures (n = 5) adjacent to the Sundarbans, the largest mangrove forests in the world, between June 2017 and March 2018. Only largetooth sawfish <em>Pristis pristis </em>was recorded in this study. Data were collected from interviews with fishermen, literature review, media reports and through monthly fish landing record sheet used during the study period. Findings of this study shows that 80% (n = 4) sawfish species were captured in dry season (November to March) and 20% (n = 1) in wet season (June to October). Findings from the semi-structured interviews (n = 50) reported that 54% of the respondents were not aware of the value (ecological as well as economic) of sawfish species whereas 46% of the respondents mentioned sawfish as an important species as its flesh used to cure cancer. Although this report does not reflect the annual capture of sawfish from all over the country, this catch pattern is alarming and needs immediate action to develop a monitoring programme to assess sawfish landings in this area. Priority research is also needed to understand sawfish life history, identify their critical habitats and raise awareness to conserve sawfish species.</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 255-262, 2018</p> Gawsia Wahidunnessa Chowdhury, Sabrina Sabbir, Alifa Bintha Haque ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000 Study for assessing mud crab (Scylla serrata, Forskal, 1755) market chain and value-added products development in Bangladesh a Syed M Istiak ##submission.copyrightStatement## Sun, 02 Dec 2018 00:00:00 +0000 First description of buckler crab Cryptopodia angulata (H. Milne Edwards and Lucas 1841) from Bangladesh marine water <p>Abstract not available</p> <p>Bangladesh J. Zool. <strong>46</strong>(2): 275-280, 2018</p> SM Sharifuzzaman, Sayedur Rahman Chowdhury, Md Abu Sadek, Md Tariful Islam Fuad, M Shahadat Hossain ##submission.copyrightStatement## Sat, 01 Dec 2018 00:00:00 +0000