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.
Continue reading Histopathological Effects of Albino Mice (Mus musculus).
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.
Continue reading Population dynamics of Ramshagor of Dinajpur
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.
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A SURVEY OF MALLOPHAGA (INSECTA: PHTHIRAPTERA) OF DOMESTIC CHICKENS (GALLUS DOMESTICA L.) IN NAOGAON DISTRICT, BANGLADESH
To study the species variety and prevalence of the Mallophaga (Insecta: Phthiraptera) of the domestic chicken (Gallus domestica L.), a survey was performed in four upazilas (Manda, Mahdevpur, Atrai and Badalgachhi) of Naogaon district in a period of 10 month from Jun 2011 to March 2012. A study total 130 poultry farms and houses of Naogaon. Biting louse infestation was 100%. A total of 10762 individuals of Mallophaga were collected and identified. Five species of lice were identified: Menopon gallinae (line, 1758), Menacanthus stramineus (Mitzsch, 1818), Lipeurus caponis (Linne, 1758), Goniocotes gallinae (De Geer 1778) and Goniodes dissimilis (Denny, 1842). The occurrence of these lice on poultry birds was – Menopon gallinae (42.94%), Menacanthus stramineus (28.52%), Lipeurus caponis (10.77%), Goniocotes gallinae (14.72%) and Goniodes dissimilis(3.05%). Among them M. gallinae was the most common and G. dissimis was the lowest share of occurrence. The density of each proven species of Mallophaga was established. The species variety of Mallophaga on chickens was relatively poor. According to the literature, there is no record of G. dissimilis in Bangladesh which has identified during this research work.
Effect of Diflubenzuron and Diflubenzuron in Combination with Neem Oil on the Life Stages and Developmental Periods of Rice Weevil, Sitophilus oryzae (L.)
Effect of diflubenzuron (DFB) and diflubenzuron in combination with neem oil (NO) on the life stages and developmental periods of rice weevil, Sitophilus oryzae (L.) was studied. The fresh polished rice and egg, larva and pupa infested rice were treated with DFB and DFB-NO at four different doses viz. 2-, 4-, 8- and 16 mg/kg and 2+2.25-, 4+2.25-, 8+2.25- and 16 mg/kg+2.25ml/kg, respectively.
Continue reading Control of Rice weevil,Sitophilus oryzae (L.)