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Studies of some aspects of rodent ecology in the four districts of the gangetic plain of West Bengal, India 印度西孟加拉邦恒河平原四个地区啮齿动物生态学若干方面的研究
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1961
Lalyan Brata Santra, C. K. Manna
This study has been conducted in four Districts (i.e., Nadia, North 24-Parganas, Hooghly and Burdwan) of the Gangetic plain of West Bengal, India. The results of the present study indicate that these Districts are badly infested by various types of rodents. Among them wild Indian house rat ( Rattus rattus ) is quite preponderant followed by field mice ( Mus musculus ), Norway rat ( Rattus norvegicus ) and Indian mole rat ( Bandicota sp ). Percentage of the female individual of these species is higher than the male individual. They cause severe types of damages in the fields and houses. In the District Nadia, Hooghly, North 24-Parganas and Burdwan, paddy and potato were damaged and estimated during the study period. Other crops and vegetables such as wheat, gourd, cauliflower, cabbage and jute were also damaged by the rodents. Household properties e.g., books, clothes, utensils and electronic goods were also destroyed by the rats. Damages were maximum in the mud built houses. They build their nest and burrows in the upland, trees and periphery of the field but extensive damages were noticed in the centre of the field. Rodents breed throughout the year but peak breeding seasons are August to October and late winter season and average litter size is about 6 to 8. The present study also points out the migratory behavior, hoarding materials in the burrows, nature of damages in relation to field conditions. For the control operation of the rodents and especially the rats, it is essential to have a clear-cut idea about the species present in the area, their habit and habitat, mode of burrowing, their movements, preference of food and a detailed life history of predominant rodent species. These aspects have been thoroughly studied in the present investigation. Key words: Gangetic plain, West Bengal, rodents, Rattus rattus, paddy, burrow.     doi:10.3329/ujzru.v27i0.1961 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 85-90
这项研究是在印度西孟加拉邦恒河平原的四个地区(即Nadia、North 24-Parganas、Hooghly和Burdwan)进行的。本研究的结果表明,这些地区的各种啮齿动物出没严重。其中以野生印度家鼠(Rattus Rattus)为优势,其次为田鼠(Mus musculus)、挪威鼠(Rattus norvegicus)和印度鼹鼠(Bandicota sp)。雌虫所占比例高于雄虫。它们对田地和房屋造成了严重的破坏。在Nadia区、Hooghly区、North 24-Parganas区和Burdwan区,水稻和马铃薯受到了破坏,并在研究期间进行了估计。其他作物和蔬菜,如小麦、葫芦、花椰菜、卷心菜和黄麻也受到啮齿动物的损害。家庭财产,如书籍、衣服、器具和电子产品也被老鼠破坏。泥造房屋受到的破坏最大。它们在高地、树木和田地的外围筑巢和挖洞,但在田地的中心发现了广泛的破坏。鼠类全年繁殖,繁殖高峰期为8至10月及冬末,平均产仔数约为6至8窝。本研究还指出了它们的迁移行为、在洞穴中囤积物质、损害性质与野外条件的关系。对啮齿动物,特别是大鼠的防治工作,必须清楚地了解该地区的啮齿动物种类、习性和栖息地、穴居方式、活动方式、食物偏好以及优势啮齿动物种类的详细生活史。本研究对这些方面进行了深入的研究。关键词:恒河平原;西孟加拉邦;鼠类;Â Â doi:10.3329/ujzru.v27i0.1961 Univ. j. zool。Rajshahi university . Vol. 27, 2008 pp. 85-90
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引用次数: 10
Effects of age, body weight, body condition and scrotal circumference on sperm abnormalities of bulls used for artificial insemination (AI) programme in Bangladesh 年龄、体重、身体状况和阴囊周长对孟加拉国用于人工授精(AI)计划的公牛精子异常的影响
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1959
Jalal Uddin Sarder
Impacts of age, body weight, body conditions, and scrotal circumference on sperm abnormalities of bulls used for artificial insemination (AI) in Bangladesh have been studied. During 1997-2002, 1390 ejaculates of semen from 71 bulls from Central Cattle Breeding Station and Dairy Farm, Savar, Dhaka, Rajshahi Dairy and Cattle Improvement Farm, Rajabarihat, and District Artificial Insemination Centre, Rajshahi, were collected and examined. Total head abnormalities, free loose head, mid-piece, tail abnormalities, proximal and distal cytoplamic droplets, total tail abnormalities and total sperm abnormalities were recorded. Age of the bulls had significant effect on sperm abnormalities (P 10 yrs) bulls having body weight of Key words : Bull sperm abnormalities, age, body weight, body conditions, scrotal circumference, artificial insemination (AI) doi:10.3329/ujzru.v27i0.1959 Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 73-78   Â
研究了孟加拉国用于人工授精(AI)的公牛的年龄、体重、身体状况和阴囊围对精子异常的影响。在1997-2002年期间,收集并检查了71头公牛的1390次射精精液,分别来自达卡Savar的中央养牛站和奶牛场、Rajshahi奶牛和牛改良场、Rajabarihat的Rajshahi地区人工授精中心。记录头部总异常、游离松头、中段、尾部异常、近端和远端细胞质液滴、尾部总异常和精子总异常。关键词:公牛精子异常,年龄,体重,身体状况,阴囊周长,人工授精(AI) doi:10.3329/ujzru.v27i0.1959 Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table。mso-style-name:"Table Normal";mso-tstyle-rowband-size: 0;mso-tstyle-colband-size: 0;mso-style-noshow:是的;mso-style-parent:“”;Mso-padding-alt:0cm 5.4pt;mso-para-margin: 0厘米;mso-para-margin-bottom: .0001pt;mso-pagination: widow-orphan;字体大小:10.0分;font-family:宋体;mso-ansi-language: # 0400;mso-fareast-language: # 0400;mso-bidi-language:#0400;Rajshahi university . Vol. 27, 2008 pp. 73-78 Â Â
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引用次数: 19
Prevalence of ectoparasites of carp fingerlings at Santaher, Bogra 博格拉州Santaher鲤鱼鱼种体外寄生虫流行情况
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1947
Hossain, M. Hossain, M. Rahman, A. Akter, Da Khanom
The research work was conducted to find out the seasonal prevalence of ectoparasites of carp fingerlings. Seven species of parasites viz. Trichodina domerguei , Trichodina reticulata , Chilodonella cyprini , Myxobolus koi , Dactylogyroides tripathi , Dactylogyrus extensus and Dactylogyrus catlarius were recovered from 640 fingerlings of Silver carp ( Hypophthalmicthys molitrix ), Bighead carp ( Ctenopharyngodon idella ), Common carp ( Cyprinus carpio ), Thai punti ( Puntius gonionotus ), Catla ( Catla catla ), Rui ( Labeo rohita ) and Mrigal ( Cirrhina mrigala ) from different nursery ponds of Bogra district during June 2005 to May 2006. The highest prevalence (95%) was in Trichodina domerguei and lowest (10%) in Dactylogyrus catlarius during winter season. Average prevalence of protozoan and monogenean parasite was 37.16 in rainy season, 40.08 in winter season and 30.25 in summer season. Winter is the most disease occurring season of the year. Key words: Ectoparasite, infestation, prevalence, fingerling, nursery pond   doi:10.3329/ujzru.v27i0.1947 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 17-19
本研究旨在了解鲤种体外寄生虫的季节性流行情况。从鲢鱼(Hypophthalmicthys molitrix)、鳙鱼(Ctenopharyngodon idella)、鲤鱼(Cyprinus carpio)、泰国梭鱼(Puntius gonionotus)、鲇鱼(Catla Catla)、鳙鱼(Catla Catla)、鲢鱼(Catla Catla)、鲢鱼(Catla Catla)、鲢鱼(Catla Catla)、鲢鱼(Catla Catla)、鲢鱼(Catla Catla)的640种鱼种中共检出7种寄生虫。2005年6月至2006年5月在博格拉区不同的育苗池中发现了芮(Labeo rohita)和Mrigal (Cirrhina mrigala)。冬季以多毛滴虫最高(95%),毛虫最低(10%)。雨季原生动物和单系寄生虫平均患病率为37.16,冬季为40.08,夏季为30.25。冬季是一年中发病最多的季节。关键词:体外寄生虫,侵染,流行,鱼种,苗池Â doi:10.3329/ujzru.v27i0.1947Rajshahi university . Vol. 27, 2008 . pp. 17-19
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引用次数: 43
On the food and feeding habit of an estuarine catfish ( Mystus gulio Hamilton) in the south-west coast of Bangladesh 孟加拉西南海岸的河口鲶鱼(Mystus gulio Hamilton)的食物和摄食习惯
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1962
M. Begum, M. Alam, M. Islam, HK Pal
No Abstract doi:10.3329/ujzru.v27i0.1962 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 91-94
摘要doi:10.3329/ujzru.v27i0.1962 Univ. j. zool。Rajshahi university . Vol. 27, 2008 pp. 91-94
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引用次数: 43
Notes on Length-Weight Relationship and Condition Factor of Fresh Water Fish, Labeo boga (Hamilton) (Cypriniformes: Cyprinidae) 淡水鱼Labeo boga (Hamilton)的长重关系及条件因子(鲤形目:鲤科)
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1964
M. Pervin, M. Mortuza
The length-weight relationship is very important for proper exploitation and management of the population of fish species. To obtain the relationship between total length and other body weight are also very much essential for stabilizing the taxonomic characters of the species. Among the freshwater fishes, length-weight relationship of different fishes has been done by many researchers, viz., Tilapia mosambica (Dhoa & Dewan, 1967), Puntius stigma (Islam & Hossain, 1991-92), Alia coila (Alam et al., 1994), Chanda nama and Chanda ranga (Iqbal et al., 199596), Botia lohachata (Mortuza & Mokarrama 2000), Rhinomugil corsula (Mortuza & Tawfeequa, 2006).
长度-重量关系对鱼类种群的合理开发和管理具有重要意义。获得总体长与其他体重之间的关系对于稳定该物种的分类特征也是非常必要的。在淡水鱼中,不同鱼类的长重关系已被许多研究者进行了研究,如罗非鱼mosambica (Dhoa & Dewan, 1967)、刺头鱼Puntius stigma (Islam & Hossain, 1991-92)、Alia coila (Alam等,1994)、Chanda nama和Chanda ranga (Iqbal等,199596)、Botia lohachata (Mortuza & Mokarrama 2000)、Rhinomugil corsula (Mortuza & Tawfeequa, 2006)。
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引用次数: 87
A study on the abundance of zooplankton of a culture and a non-culture pond of the Rajshahi University campus 拉杰沙希大学校园养殖池和非养殖池浮游动物丰度的研究
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1951
S. Rahman, M. A. Hussain
Zooplankton constitute important food item of many omnivorous and carnivorous fishes. The study was conducted with an aim to study the zooplankton production including physico-chemical parameters with an emphasis to the existing management practices taken by the operators. The study was carried out in a culture and a non-culture pond of Rajshahi University campus was carried out from September, 2004 to February, 2005. Monthly fluctuations of some physico-chemical parameters were noted. The ponds showed alkaline in nature with moderate bicarbonate alkalinity. Diurnal change of water temperature, free CO 2 and dissolved Oxygen were also studied. Four groups of zooplankton were identified, of which copepods (1260 units/l and 973.33 units/l in pond-1 and pond-2 respectively) were most dominant. A total of 9 genera of zooplankton were identified of which Cyclops (68.25% and 60.28% of total copepods) was most abundant in both ponds. Total zooplankton showed positive correlation with pH, carbonate alkalinity (CO 3 ) and bicarbonate alkalinity (HCO 3 ) in both ponds and DO, carbon dioxide (CO 2 ) in pond-1. Present findings indicated that the culture pond showed better result than that of the non-culture pond regarding zooplankton production. Key words : Zooplankton, culture pond, non-culture pond, physico-chemical parameters.   doi:10.3329/ujzru.v27i0.1951 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 35-41
浮游动物是许多杂食性和肉食性鱼类的重要食物。本研究的目的是研究浮游动物的产量,包括理化参数,并着重于经营者采取的现有管理措施。本研究于2004年9月至2005年2月在Rajshahi大学校园的一个文化和一个非文化池塘进行。注意到一些物理化学参数的月度波动。池塘呈碱性,碳酸氢盐碱度适中。同时研究了水温、游离co2和溶解氧的日变化。共鉴定出4类浮游动物,其中以桡足类(池1和池2分别为1260和973.33个单位/l)居多。共鉴定出9属浮游动物,其中独眼动物数量最多,分别占总桡足类的68.25%和60.28%。两池浮游动物总数与pH、碳酸盐碱度(CO 3)、碳酸氢盐碱度(HCO 3)和池1的DO、二氧化碳(CO 2)呈显著正相关。研究结果表明,在浮游动物产量方面,养殖池优于非养殖池。关键词:浮游动物,养殖池,非养殖池,理化参数。Â doi:10.3329/ujzru.v27i0.1951 Univ. j. zool。Rajshahi university . Vol. 27, 2008 pp. 35-41
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引用次数: 31
Field Studies of Butterflies: A Trial for the Establishment of Indices to Evaluate the Seasonal Fluctuations and the Ecological States of Forests in Bangladesh 蝴蝶的野外研究:建立评价孟加拉国森林季节波动和生态状态的指数的试验
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1958
R. Shahjahan, M. Razzak, A. Islam, A. Saifullah, A. Yamanaka, Moeko Inoue, K. Endo
To establish the indices evaluating the ecological conditions of forests in Bangladesh, total number of butterflies counted in 5 observation sites reached 27,805 (76 species, 10 families). Number of butterflies (IND) and species showed bimodal pattern of seasonal fluctuations peaked in April and November-to- December. The values of I(R5) also showed bimodal seasonal fluctuations peaked in January-to-February and July-to-September. The ratios of IND/I(R5) formed a large peak in November. Results indicate that species diversities of butterflies high in March-to-July decreased thereafter, the numbers of butterflies increased toward November in the study area. Key words : Butterfly, seasonal fluctuation, population indices, ecological states   doi:10.3329/ujzru.v27i0.1958 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 67-71
为了建立评价孟加拉国森林生态状况的指标,在5个观测点共统计到蝴蝶27805只(10科76种)。蝴蝶数量和种类在4月和11 - 12月呈双峰型季节性波动。I(R5)值在1 - 2月和7 - 9月也呈现双峰型季节性波动。IND/I(R5)比值在11月形成一个大峰。结果表明:3 ~ 7月蝴蝶种类多样性呈下降趋势,11月蝴蝶数量呈上升趋势;关键词:蝴蝶,季节消长,种群指数,生态状态Â doi:10.3329/ujzru.v27i0.1958Rajshahi university . Vol. 27, 2008 pp. 67-71
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引用次数: 3
Seasonal dynamics of plankton in relation to some environmental factors in a Beel ecosystem Beel生态系统中浮游生物的季节动态与一些环境因子的关系
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1955
Mmr Chowdhury, M. Mondol, S. Dewan
Seasonal dynamics of plankton, water temperature, conductivity, pH, total alkalinity, phosphatephosphorus and nitrate-nitrogen of Burulia beel were measured. These values were within the acceptable ranges. In the present study, water temperature, pH, Nitrate-nitrogen, Phosphate-phosphorus were found to range from 13.50 to 30.50°C, 6.21 to 7.33, 1.36 to 2.85 mg/l and 0.07 to 0.71 mg/l, respectively. The range of total plankton was from 12.67A—10 5 to 80.83A—10 5 cells/l with mean value 29.71±19.98A—10 5 cells/l. A total of 47 genera of plankton was recorded belonging to Chlorophyceae, Bacillariophyceae, Cyanophyceae, Euglenophyceae, Dinophyceae, Crustacea and Rotifera. Among phytoplanktonic Chlorophyceae was the most dominant group contributing 46% of the total. Cyanophyceae was the least dominant group. From zooplankton, Crustacea was the most dominant group contributing 71% of the total zooplankton. The greatest abundance of phytoplankton was recorded in September to November with an average number 70.67A—10 5 cells/l and the minimum in April with an average number 38.33A—10 5 cells/l. The abundance of zooplankton showed two peaks, one in the months of August-October and another in the months of April-June. Phytoplankton and zooplankton have a direct relationship with each other. Key words : Burulia beel, phytoplankton, zooplankton     doi:10.3329/ujzru.v27i0.1955 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 55-58
测定了布鲁利亚(Burulia beel)浮游生物、水温、电导率、pH、总碱度、磷磷和硝酸盐氮的季节动态。这些值在可接受的范围内。在本研究中,水温、pH、硝酸盐-氮、磷酸盐-磷的范围分别为13.50 ~ 30.50°C、6.21 ~ 7.33、1.36 ~ 2.85 mg/l和0.07 ~ 0.71 mg/l。浮游生物总数为12.67 a - 10.5 ~ 80.83 a - 10.5 cells/l,平均值为29.71±19.98 a - 10.5 cells/l。浮游生物共47属,分属绿藻目、硅藻目、蓝藻目、裸藻目、藻目、甲壳目和轮虫目。浮游植物中以绿藻为优势类群,占总数的46%。蓝藻是最不占优势的类群。从浮游动物来看,甲壳类是最占优势的类群,占浮游动物总数的71%。9 ~ 11月浮游植物丰度最高,平均为70.67A-10 5 cells/l, 4月最低,平均为38.33A-10 5 cells/l。浮游动物丰度呈现出8 ~ 10月和4 ~ 6月两个高峰。浮游植物和浮游动物之间有直接的关系。关键词:布鲁利亚,浮游植物,浮游动物   doi:10.3329/ujzru.v27i0.1955Rajshahi university . Vol. 27, 2008 pp. 55-58
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引用次数: 4
Toxicity of chloroform extracts of Derris indica Bennet. against Callosobruchus maculatus (F.) adults 黄芪氯仿提取物的毒性研究。黄斑胼胝体成虫
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1963
Omar Ali Mondal, N. Islam
Derris indica is belonging to family Fabaceae, inhabitants of India, Srilanka, Malaysia, North Australia and Polynesia, occurs in the tidal forests, river and canal banks, along the water edge in all districts in Bangladesh. It is a medicinal plant. The dried flowers are used in decoction to quench thirst in diabetes. Extracts of the leaves were active against Micrococcus pyogenes var. aureus (Anon, 1969). The juice of the leaves is prescribed in flatulence dyspepsia, diarrhoea and cough. Preparation of plant materials for extraction: The fresh leaves, fruit shell, root bark, root wood, seeds, stem bark, and stem wood of D. indica were collected from Rajshahi University Campus.
稻谷属豆科植物,生长在印度、斯里兰卡、马来西亚、北澳大利亚和波利尼西亚,生长在孟加拉国所有地区的潮汐林、河流和运河岸边。是一种药用植物。干花用于糖尿病患者的解渴汤剂中。叶提取物对金黄色化脓性微球菌有活性(Anon, 1969)。叶子的汁液被用来治疗肠胃胀气、消化不良、腹泻和咳嗽。提取植物材料的制备:采自Rajshahi大学校园的籼稻鲜叶、果壳、根皮、根材、种子、茎皮、茎材。
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引用次数: 4
Study on the zooplankton of Sona Dighi in Rajshahi, Bangladesh 孟加拉国拉杰沙希Sona diighi浮游动物的研究
Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1945
Sabrina Naz, Sirajun Najia
Zooplankton populations of Sona Dighi were remarkable. In all 31 genera and 45 species represented by five major groups have been reported from Sona Dighi, Rajshahi based on a year investigation. The recorded groups were as follows as Protozoa (5 genera, 4 species), Rotifera (7 genera, 11 species), Cladocera (6 genera, 8 species), Ostracoda (4 genera, 6 species) and Copepoda (9 genera, 15 species).Physical chemical characteristics and zooplankton diversity of the reservoir indicates its eutrophic nature. Key words: Zooplankton, Sona Dighi, Rajshahi, Bangladesh.   doi:10.3329/ujzru.v27i0.1945 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 07-11
索纳迪吉的浮游动物种群数量显著。经过一年的调查,在Rajshahi的Sona diighi发现了5个主要类群的31属45种。记录类群为原生动物(5属4种)、轮虫目(7属11种)、枝目(6属8种)、介形虫目(4属6种)和桡足目(9属15种)。水库的物理化学特征和浮游动物多样性表明其富营养化性质。关键词:浮游动物,Sona diighi, Rajshahi,孟加拉国Â doi:10.3329/ujzru.v27i0.1945 Univ. j. zool。Rajshahi university . Vol. 27, 2008 pp. 07-11
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引用次数: 5
期刊
University Journal of Zoology, Rajshahi University
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