Isolation and Characterization of Pathogenic Bacteria from Diseased Silkworm (Bombyx mori L.) and Antibacterial Activities of Different Plant Extracts
The art of silk production is called sericulture that comprises cultivation of mulberry, silkworm rearing and post cocoon activities leading to production of silk yarn. Sericulture provides gainful employment, economic development and improvement in the quality of life to the people in rural area and therefore it plays an important role in anti poverty programme and prevents migration of rural people to urban area in search of employment. Sericulture or silk farming is the rearing of silkworms for the production of raw silk. During the silkworm rearing, the silk worm comes in contact with pathogenic agent viz, protozoa, virus, fungi and bacteria. Silkworm rearing free from diseases is a major constraint in sericulture industry. More »
Diatomaceous Earth-Induced Changes in the Life-History Traits in Musca domestica L. (Diptera: Muscidae)
The present investigation was split into the following five experiments:
Experiment One: Using doses of 0.0, 0.2, 0.4, 0.6 and 0.8 mg/l00ml diatomaceous earth (DE) in the larval food medium, a mean LC50 of 0.66mg/l00ml was determined for the 31instar larvae of M domestica. Experiment Two: Here the time-course mortalities of the 3rd-instar larvae were evaluated, wh
Histopathological Effects of Carbofuran on Renal and Hepatic Tissues of Albino Mice (Mus musculus).
Wide spread use of pesticide in public health programme and agriculture has caused a severe environmental pollution and potential health hazards. Among all the pesticides used, carbamates are most common. The carbofuran (2, 3-dihydro-2,2-dimethyl-7- benzofuranyl) is an important organocarbamate pesticide. It is a broad spectrum, non- cumulative carbamate insecticide; a cholinesterase inhibitor with contact and stomach action and highly toxic to mammals.
BIODIVERSITY, ABUNDANCE OF PLANKTON AND WATER QUALITY VARIABLES OF RAMSHAGAR IN DINAJPUR
Ramshagar dighi is the largest man made pond (Dighi, Bengali meaning) sited at Tajpur village in Dinajpur. It bears some exceptional historical events of national heritage. The water area of Ramshagar dighi measures 1039m along north-south and 192.6m along east-west. Approximate depth of the tank is 9.10m Ramshagar dighi is surrounded by l0.75m high wall.
SOME ASPECTS OF THE NUTRITIONAL AND CHEMICAL CONTROL OF TRIBOLIUM CASTANEUM (HERBST) (COLEOPTERA : TENEBRIONIDAE)
The present investigation deals with the effects of cereal flours (wheat, barley and rice) on the red flour beetle, Tribolium castaneum (Herbst). It was found that cereal flours had significant effects on the growth of T. castaneum producing lighter 10-day old larvae and the heaviest male mature larvae on rice flour. Cereal flour produced heavier pupae and rice flour produced the heaviest male adults and barley flour produced the heaviest female adults in comparison to controls grown on the wheat – yeast medium.