University Journal of Zoology, Rajshahi University最新文献_第9页

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1961

Lalyan Brata Santra, C. K. Manna

{"title":"Studies of some aspects of rodent ecology in the four districts of the gangetic plain of West Bengal, India","authors":"Lalyan Brata Santra, C. K. Manna","doi":"10.3329/UJZRU.V27I0.1961","DOIUrl":"https://doi.org/10.3329/UJZRU.V27I0.1961","url":null,"abstract":"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. Â Â doi:10.3329/ujzru.v27i0.1961 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 85-90","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"12 1","pages":"85-90"},"PeriodicalIF":0.0,"publicationDate":"2009-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86725056","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}

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1959

Jalal Uddin Sarder

{"title":"Effects of age, body weight, body condition and scrotal circumference on sperm abnormalities of bulls used for artificial insemination (AI) programme in Bangladesh","authors":"Jalal Uddin Sarder","doi":"10.3329/UJZRU.V27I0.1959","DOIUrl":"https://doi.org/10.3329/UJZRU.V27I0.1959","url":null,"abstract":"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 */ \u0000 table.MsoNormalTable \u0000 {mso-style-name:\"Table Normal\"; \u0000 mso-tstyle-rowband-size:0; \u0000 mso-tstyle-colband-size:0; \u0000 mso-style-noshow:yes; \u0000 mso-style-parent:\"\"; \u0000 mso-padding-alt:0cm 5.4pt 0cm 5.4pt; \u0000 mso-para-margin:0cm; \u0000 mso-para-margin-bottom:.0001pt; \u0000 mso-pagination:widow-orphan; \u0000 font-size:10.0pt; \u0000 font-family:\"Times New Roman\"; \u0000 mso-ansi-language:#0400; \u0000 mso-fareast-language:#0400; \u0000 mso-bidi-language:#0400;} \u0000 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 73-78 Â Â","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"26 1","pages":"73-78"},"PeriodicalIF":0.0,"publicationDate":"2009-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88259929","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}

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1947

Hossain, M. Hossain, M. Rahman, A. Akter, Da Khanom

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1962

M. Begum, M. Alam, M. Islam, HK Pal

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)

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1964

M. Pervin, M. Mortuza

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1951

S. Rahman, M. A. Hussain

{"title":"A study on the abundance of zooplankton of a culture and a non-culture pond of the Rajshahi University campus","authors":"S. Rahman, M. A. Hussain","doi":"10.3329/UJZRU.V27I0.1951","DOIUrl":"https://doi.org/10.3329/UJZRU.V27I0.1951","url":null,"abstract":"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. Â doi:10.3329/ujzru.v27i0.1951 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 35-41","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"131 1","pages":"35-41"},"PeriodicalIF":0.0,"publicationDate":"2009-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75978300","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}

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

University Journal of Zoology, Rajshahi University 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

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1955

Mmr Chowdhury, M. Mondol, S. Dewan

{"title":"Seasonal dynamics of plankton in relation to some environmental factors in a Beel ecosystem","authors":"Mmr Chowdhury, M. Mondol, S. Dewan","doi":"10.3329/UJZRU.V27I0.1955","DOIUrl":"https://doi.org/10.3329/UJZRU.V27I0.1955","url":null,"abstract":"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 30.50Â°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 29.71Â±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 Â Â Â doi:10.3329/ujzru.v27i0.1955 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 55-58","PeriodicalId":23467,"journal":{"name":"University Journal of Zoology, Rajshahi University","volume":"72 1","pages":"55-58"},"PeriodicalIF":0.0,"publicationDate":"2009-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90484318","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}

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1963

Omar Ali Mondal, N. Islam

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

University Journal of Zoology, Rajshahi University Pub Date : 2009-01-28 DOI: 10.3329/UJZRU.V27I0.1945

Sabrina Naz, Sirajun Najia

引用次数: 5