Pub Date : 2013-06-23DOI: 10.3329/UJZRU.V31I0.15438
S. K. Shil, Bc Das, M. Uddin, M. L. Rahman, M. Quasem
DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15438 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 83-84
DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15438 Univ. j. zool。Rajshahi大学,2012年第31卷,第83-84页
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Pub Date : 2013-06-23DOI: 10.3329/UJZRU.V31I0.15435
A. Mohsin, M. N. Islam, Mosharrof Hossain, S. M. Galib
This study was conducted in Rajshahi and Natore districts of northern area of Bangladesh for a period of three years (2007 to 2009). One hundred carp ponds were selected randomly and fish farmers were interviewed to reveal the existing constraints and prospects. Ten percent farmers reported multiple ownership as a problem and 16% farmers stated that lease value of pond is too high which reducing their profit level. Lack of quality fish seeds was reported by 33% farmers which results in low growth and high mortality of fishes. Nine percent carp farmers reported that inorganic fertilizers were not giving expected performances. Thirty three percent carp farmers failed to apply required inputs in due time due to lack of sufficient credit. Plankton bloom was recorded in 18% ponds. Three percent fish farmers were found to be affected by flood and drought. Eight percent farmers reported non-severe attack of disease. Fish poaching and poisoning were revealed as major constraints . Thirty six percent farmers mentioned lack of technical supports. Due to found constraints, the farmers failed to use inputs and experiences properly resulted in unsatisfactory fish production (3598.72±785.83 kg/ha/yr) to the carp farmers. Further research efforts are recommended to assess the specific impacts of recorded constraints on fish production. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15435 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 69-72
本研究在孟加拉国北部地区的Rajshahi和Natore地区进行,为期三年(2007 - 2009年)。随机选取100个鱼塘,对养鱼户进行访谈,揭示制约因素和前景。10%的农户认为多重所有制是一个问题,16%的农户认为池塘租赁价值过高,降低了他们的利润水平。33%的养殖户报告缺乏优质鱼种,导致鱼类生长缓慢,死亡率高。9%的鲤鱼养殖户报告说,无机肥料没有达到预期效果。33%的鲤鱼养殖户由于缺乏足够的信贷而未能及时投入所需的投入物。18%的池塘录得浮游生物大量繁殖。3%的养鱼户受到了洪水和干旱的影响。8%的农民报告了非严重的疾病袭击。鱼类偷猎和中毒是主要的制约因素。36%的农民提到缺乏技术支持。由于所发现的限制,养殖户未能正确使用投入物和经验,导致鲤鱼养殖户的鱼产量(3598.72±785.83公斤/公顷/年)不理想。建议进一步开展研究工作,以评估已记录的限制因素对鱼类生产的具体影响。DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15435 Univ. j. zool。Rajshahi university . Vol. 31, 2012 pp. 69-72
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Pub Date : 2013-06-23DOI: 10.3329/UJZRU.V31I0.15436
S. Mahdi, M. Khalequzzaman
Effectiveness of diatomaceous earth (DE) and other inert dusts (kaolin powder, paddy husk ash, coal ash, alluvial soil, china clay) and a dust formulation insecticide carbaryl have been tested on the pulse beetles Callosobruchus chinensis L. and C. maculatus (F . ). The bioassay of the dusts was done on adult beetles by mixing them with normal food (lentil and black gram seeds). The LD 50 of the combined doses of mixtures for C. chinensis have been calculated as 12703.57 and 859.36 ppm for DE+ kaolin powder; 2432.78 and 274.00 ppm for DE+ paddy hush ash; 3430.036 and 426.16 ppm for DE+ coal ash; 12563.47 and 652.29 ppm for DE+ alluvial soil; 2242.81 and 325.76 ppm for DE+ china clay; and 21.33 and 14.45 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The LD 50 of combined doses of different mixtures for C. maculatus have been calculated as 3640.65 and 503.74 ppm for DE+ kaolin powder; 54946.68 and 987.2394 ppm for DE + paddy hush ash; 61029.04 and 3229.436 ppm for DE+ coal ash; 61029 and 4265.599 ppm for DE+ alluvial soil; 4648.786 and 642.278 ppm for DE+ china clay; and 24.12017 and 15.47023 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The co-toxicity coefficient has been calculated and all ratios showed synergistic action. The highest co-toxicity coefficient was recorded as 88885.15 and 92107.22 in DE+ carbaryl at 24 and 48 h after treatment for C. chinensis and 78615.55 and 86004.88 in DE+ carbaryl at 24 and 48 h after treatment for C. maculatus . DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15436 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 73-78
{"title":"The efficacy of diatomaceous earth in mixed formulation with other dusts and an insecticide against the pulse beetles, Callosobruchus chinensis L. and Callosobruchus maculatus (F.)","authors":"S. Mahdi, M. Khalequzzaman","doi":"10.3329/UJZRU.V31I0.15436","DOIUrl":"https://doi.org/10.3329/UJZRU.V31I0.15436","url":null,"abstract":"Effectiveness of diatomaceous earth (DE) and other inert dusts (kaolin powder, paddy husk ash, coal ash, alluvial soil, china clay) and a dust formulation insecticide carbaryl have been tested on the pulse beetles Callosobruchus chinensis L. and C. maculatus (F . ). The bioassay of the dusts was done on adult beetles by mixing them with normal food (lentil and black gram seeds). The LD 50 of the combined doses of mixtures for C. chinensis have been calculated as 12703.57 and 859.36 ppm for DE+ kaolin powder; 2432.78 and 274.00 ppm for DE+ paddy hush ash; 3430.036 and 426.16 ppm for DE+ coal ash; 12563.47 and 652.29 ppm for DE+ alluvial soil; 2242.81 and 325.76 ppm for DE+ china clay; and 21.33 and 14.45 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The LD 50 of combined doses of different mixtures for C. maculatus have been calculated as 3640.65 and 503.74 ppm for DE+ kaolin powder; 54946.68 and 987.2394 ppm for DE + paddy hush ash; 61029.04 and 3229.436 ppm for DE+ coal ash; 61029 and 4265.599 ppm for DE+ alluvial soil; 4648.786 and 642.278 ppm for DE+ china clay; and 24.12017 and 15.47023 ppm for DE+ carbaryl after 24 and 48 h after treatment respectively. The co-toxicity coefficient has been calculated and all ratios showed synergistic action. The highest co-toxicity coefficient was recorded as 88885.15 and 92107.22 in DE+ carbaryl at 24 and 48 h after treatment for C. chinensis and 78615.55 and 86004.88 in DE+ carbaryl at 24 and 48 h after treatment for C. maculatus . DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15436 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 73-78","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"7 1","pages":"73-78"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74630444","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 : 2013-06-23DOI: 10.3329/UJZRU.V31I0.15441
M. Mutaleb, Mb Rahman, N. Huda, Hemayet Ullah, M. Hossain
DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15441 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 91-92
DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15441 Univ. j. zool。拉杰沙希大学,2012年第31卷,第91-92页
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Pub Date : 2013-06-23DOI: 10.3329/UJZRU.V31I0.15440
Anisur Rahman, N. Yoshizaki
DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15440 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 89-90
DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15440 Univ. j. zool。Rajshahi university . Vol. 31, 2012 pp. 89-90
{"title":"The time of embryonic axis formation in quail eggs","authors":"Anisur Rahman, N. Yoshizaki","doi":"10.3329/UJZRU.V31I0.15440","DOIUrl":"https://doi.org/10.3329/UJZRU.V31I0.15440","url":null,"abstract":"DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15440 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 89-90","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"56 1","pages":"89-90"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81399841","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 : 2013-06-22DOI: 10.3329/UJZRU.V31I0.15401
S. Hossain, M. Haque
An experiment was carried out to asses the physico-chemical characteristics, water quality and fish growth suffered by pollution hazards created by unethical use of agrochemical in few ponds in a matsaya gram (fish fillage) in northern part of Bangladesh. The range of free CO 2 , DO, HCO 3 , CO 3 and p H were 2-30mg/l, 3.14-11.86 mg/l, 86.31-143.84mg/l, 0 -50mg/l and 8.5-9.5 respectively. The BOD of the studied ponds found quite less than optimum level. The study of relationship between fish growth and the soil characters showed negative impact. It revealed that due to minimum rainfall the ponds were not washed out that could decrease the rate of pollution created from the nearest house and residual chemicals, those used in upland crop field beside it. But the ponds are still suitable for fish culture and should keep them at least in present position for good crop. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15401 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 55-58
在孟加拉国北部的matsaya gram(鱼类填充物)的几个池塘中进行了一项实验,以评估因不道德地使用农用化学品而造成的污染危害对理化特性、水质和鱼类生长的影响。游离CO 2、DO、HCO 3、CO 3和p H的范围分别为2 ~ 30mg/l、3.14 ~ 11.86 mg/l、86.31 ~ 143.84mg/l、0 ~ 50mg/l和8.5 ~ 9.5 mg/l。研究池塘的生化需氧量远低于最佳水平。鱼类生长与土壤性状的关系研究显示出负向影响。调查显示,由于降雨量很少,池塘没有被冲走,这可能会减少最近的房屋造成的污染和残留的化学物质,这些化学物质是在旁边的旱地农田使用的。但池塘仍然适合养鱼,至少应该保持在目前的位置,以获得良好的收成。DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15401 Univ. j. zool。Rajshahi university . Vol. 31, 2012 . pp. 55-58
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Pub Date : 2013-06-22DOI: 10.3329/UJZRU.V31I0.15400
M. Sarker, S. Islam, T. Uehara
The complete embryonic development of the mangrove sesarmid crab Neosarmatium indicum (A. Milne Edwards, 1868) was described based on internal and external morphological changes in live fertilized eggs reared in the laboratory. Several pairs of N. indicum were collected from the Nuha River mangrove swamp of the southern Okinawa Island, Japan, which is consisted mainly with the mangrove Kandelia candel , and densely populated by the genus Perisesarma and Neosarmatium indicum . The fertilized eggs were macrolecithal, centrolecithal and spherical in shape, filled with uniform dark olive colour, without evidence of any development. The diameter of fertilized egg was 0.36 mm, which increased to 0.47 mm before hatching. Embryo development from fertilized eggs to hatching (first zoea stage) lasted average of 16 days at 25°C and salinity at 80‰. Sixteen stages of embryonic development were categorized by following continuous observation using an optical DIC microscope equipped with digital camera, video camera and printer. After 24 hours of incubation, fertilized eggs became 32-celled stage of development. Before hatching, many chromatophores (mostly black) were evident in the abdominal segments and the telson of embryos. At the end of 16 days incubation, the zoea larvae were successfully hatched out, which were reared in the laboratory conditions for further development. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15400 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 49-54
根据实验室培养的受精卵的内外形态变化,描述了红树籽蟹(Neosarmatium indicum, A. Milne Edwards, 1868)的完整胚胎发育。在日本冲绳岛南部女哈河红树林沼泽中采集到几对籼稻,该沼泽以红树甘花(Kandelia candel)为主,主要分布有Perisesarma属和Neosarmatium indicum。受精卵为大卵泡、中卵泡和球形,充满均匀的深橄榄色,没有任何发育的证据。受精卵直径为0.36 mm,孵化前增大到0.47 mm。在25℃、80‰盐度条件下,胚胎从受精卵发育到孵化(第一胎期)平均耗时16 d。通过配备数码相机、摄像机和打印机的光学DIC显微镜连续观察,将胚胎发育分为16个阶段。孵育24小时后,受精卵发育为32个细胞阶段。在孵化前,胚胎的腹部节和端部明显可见许多色素体(多数为黑色)。孵化16 d后,成功孵化出zoea幼虫,在实验室条件下饲养,进一步发育。DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15400 Univ. j. zool。拉杰沙希大学,2012年第31卷,第49-54页
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Pub Date : 2013-06-22DOI: 10.3329/UJZRU.V31I0.15402
Omar Ali Mondal, Kamsh Mondal, N. Islam, Ataur Rahman Khan
Chloroform extracts of the fruit shell, leaves, root bark, root wood, seeds, stem bark and stem wood of Derris indica Bennet. were tested against the brine shrimp, A rtemia salina nauplii. All the test extracts of D. indica were found to be effective. The LC 50 values of the extracts were 15312.37, 92.074 and 29.661 ppm for the fruit shell; 60922.83, 61.522 and 23.777 ppm for the leaf; 15312.37, 51.477 and 19.169 ppm for the root bark; 2598.584, 30.480 and 8.260 ppm for the root wood; 545.025,26.730 and 7.719 ppm for the seed; 60922.83, 114.549 and 29.572 ppm for the stem bark and 7734.618, 58.501 and 23.694 ppm for the stem wood at 30 minute, 24 hours and 48 hours post exposures respectively at doses 200, 100, 50, 25, 12.5, 6.25, 3.125 and 1.563 ppm against A. salina . The toxicity of the extracts could be arranged in the order: seed > root wood > root bark> stem wood > leaf > fruit shell > stem bark extract. However, the extracts did not significantly inhibit the germination of mustard oil seeds, and thus its application to crops or to the crop field may not cause any harm to crop plants. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15402 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 59-64
{"title":"Screening of Derris indica Bennet. for cytotoxicity against Artemia salina and phytotoxicity on mustard seeds.","authors":"Omar Ali Mondal, Kamsh Mondal, N. Islam, Ataur Rahman Khan","doi":"10.3329/UJZRU.V31I0.15402","DOIUrl":"https://doi.org/10.3329/UJZRU.V31I0.15402","url":null,"abstract":"Chloroform extracts of the fruit shell, leaves, root bark, root wood, seeds, stem bark and stem wood of Derris indica Bennet. were tested against the brine shrimp, A rtemia salina nauplii. All the test extracts of D. indica were found to be effective. The LC 50 values of the extracts were 15312.37, 92.074 and 29.661 ppm for the fruit shell; 60922.83, 61.522 and 23.777 ppm for the leaf; 15312.37, 51.477 and 19.169 ppm for the root bark; 2598.584, 30.480 and 8.260 ppm for the root wood; 545.025,26.730 and 7.719 ppm for the seed; 60922.83, 114.549 and 29.572 ppm for the stem bark and 7734.618, 58.501 and 23.694 ppm for the stem wood at 30 minute, 24 hours and 48 hours post exposures respectively at doses 200, 100, 50, 25, 12.5, 6.25, 3.125 and 1.563 ppm against A. salina . The toxicity of the extracts could be arranged in the order: seed > root wood > root bark> stem wood > leaf > fruit shell > stem bark extract. However, the extracts did not significantly inhibit the germination of mustard oil seeds, and thus its application to crops or to the crop field may not cause any harm to crop plants. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15402 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 59-64","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"116 1","pages":"59-64"},"PeriodicalIF":0.0,"publicationDate":"2013-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79323266","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 : 2013-06-22DOI: 10.3329/UJZRU.V31I0.15403
A. H. Shaikat, M. M. Hasan, S. A. Hasan, Shahnewaz Khan, A. Haque, N. Islam, M. B. Hossain
The study was carried out in Chittagong Veterinary and Animal Sciences University (CVASU), Chittagong to find out the causes of sudden death of cattle in the Military Dairy Farm, Chittagong. To explore the cause of death, clinical history, clinical signs were recorded. Finally, postmortem was done and samples were collected for laboratory diagnosis. The ruminal p H was 9.0 and the clinical history along with signs suggests possible non-protein nitrogenous compound poisoning. The laboratory diagnosis coincides with nitrate poisoning which focuses possible relationship between non-protein nitrogenous compound and nitrate poisoning. The study recommends maintaining proper cautions to use urea in concentrate feed. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15403 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 65-68
该研究是在吉大港兽医和动物科学大学(CVASU)进行的,旨在找出吉大港军事奶牛场牛猝死的原因。为探讨死亡原因,记录患者的临床病史、临床症状。最后,进行尸检并采集样本进行实验室诊断。瘤胃p H为9.0,临床病史及体征提示可能是非蛋白氮化合物中毒。实验室诊断与硝酸盐中毒一致,重点是非蛋白氮化合物与硝酸盐中毒的可能关系。本研究建议在精料饲料中使用尿素时应保持适当的注意事项。DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15403 Univ. j. zool。Rajshahi university . Vol. 31, 2012 pp. 65-68
{"title":"Non-protein nitrogen compound poisoning in cattle","authors":"A. H. Shaikat, M. M. Hasan, S. A. Hasan, Shahnewaz Khan, A. Haque, N. Islam, M. B. Hossain","doi":"10.3329/UJZRU.V31I0.15403","DOIUrl":"https://doi.org/10.3329/UJZRU.V31I0.15403","url":null,"abstract":"The study was carried out in Chittagong Veterinary and Animal Sciences University (CVASU), Chittagong to find out the causes of sudden death of cattle in the Military Dairy Farm, Chittagong. To explore the cause of death, clinical history, clinical signs were recorded. Finally, postmortem was done and samples were collected for laboratory diagnosis. The ruminal p H was 9.0 and the clinical history along with signs suggests possible non-protein nitrogenous compound poisoning. The laboratory diagnosis coincides with nitrate poisoning which focuses possible relationship between non-protein nitrogenous compound and nitrate poisoning. The study recommends maintaining proper cautions to use urea in concentrate feed. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15403 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 65-68","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"59 1","pages":"65-68"},"PeriodicalIF":0.0,"publicationDate":"2013-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80508689","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}