Foraging behave of Apis melliferawas observed in different hours of the day on one square metre when the bee kept on foraging on litchi trees bloomed with flowers. This experiment was carried out at a litchi orchard where a good number of bee colonies were kept by the bee keepers in order to harvest honey of litchi flowers.
Different type of places was selected in order to count the number of bees on one square metre.
Foraging activities were observed and recorded in four different hours of the day i.e. Morning, noon and afternoon and evening. Every time the foragers are counted numbers of bees in one square metre of Litchi flowers. In order to count the number of foraging visitors the following materials were used-
Foraging activities of honeybee, Apis mellifera L. on Litchi plants in one square metre was studied during the year, 2010. The results of the study indicated that the foraging activity of European honey bee is different in the different hours of the day. There are three castes of honey bee i.e. Queen, Worker and Drone. Only the workers show the foraging activity. They collect nectar and pollen from flowers for their nutrition and development. Foraging activity becomes more active in the morning than noon and evening, between noon and evening in the time of afternoon the foraging rate of bee comparatively increases than that in the noon. It has been observed on the average, that a number of 271.6 been forage per square metre in the morning which drops down to 111.2 in the noon. In the afternoon 145.2 bees per square metre foraged. The forage rate decreases before the sunset when only 83.4 bees per square metre were found on an average to forage. The study was carried out from 13th March to 22th March 2010.
the animals of two bio-ecological and agro-ecological zones of
B.Sc. (Honours) Part- III Examination-2008
Zoology Course: Zool.-HE-341
Department of Zoology
University of Rajshahi
All the admiration to Allah the most Merciful and Beneficent Who has enabled me to submit this report on excursion 2009.
I express my most sincere gratitude and indebtedness to our field work coordinators and examination committee chairman Prof. Dr. Ismat Ara Ali madam. Also extended thanks and gratefulness to other members of the committee as Prof. Dr. Md. Abdul Mannan sir, Prof. Dr. Md. Sowdagor Mahafujar Rahman sir, Dr. Saiful Islam Faruki sir.
Especial thanks to Prof. Dr. Md. Abdus Salam sir who act as a guardian and leader of our excursion team and I am very much thankful to him for his friendly behave and presence with us for completing a successful tour.
I extended my thanks and gratefulness to Prof. Dr. Md. Abdul Mannan sir for his kind co-operation by giving us important information during our whole study period.
I wish to express my profound sense of gratitude and appreciation to Dr. Anjuman Ara Ali madam, Prof. Dr. Selina Parween madam and Prof. Dr. Abdus Salam Bhuiyan sir for joining with our excursion team and for their friendly behave to us.
I would like to thanks to our sir Dr. Monirrujjam Sorkar who introduced us about ecology and ecological zones of Bangladesh. He holds this class before excursion and we got benefit.
I also thanks to Md. Monowar Hossain (Biplob) bhai and Md.Golam Mostofa bhai for their helping mentality which made us oblige to them.
I must have to thank the bus driver and helpers for their cordial help to make the journey pleasant and successful.
I would like to thanks my friends for their constant inspiration and coordination in excursion.
We went to excursion to know about zones of Bangladesh and animals are found in these zones. We gain knowledge about bio-diversity and ecosystem. After observing the Barind tract, estuarine of Padma and Mohanonda, Himalyan Piedmont Plain, Active Tista Floodplain and surroundings we have achieved practical knowledge which broadens our theoretical knowledge. Volahat Resom Bejagar, Babudying, Dhamurhat forest, bird collection in museum of Dinajpur Govt. College, Banglabandha, enclave of Angorpota and Dhahogram, Rangpur Carmichiel College and many other places. We observed little number of zones of Bangladesh. So to increase our out look as part of our syllabus work we had visited those places. We had completed this tour successfully through obeying the advices of our honorable teachers.