About Lesson
Detrimental effects:
- Destruction or spoilage of food (both fresh and stored) and crops (including forests)
- Crop losses due to insect pests in Nepal are about 15-20 % (Neupane, 2058). ( Inthe world 12.5%, Cramer, 1967)
- Damage to goods – leather, paper, textiles, (by beetles, cockroaches, silverfish, or moths), timber (by termites and different types of borers).
- Transmit disease in plants and animals: Disease-causing Mosquito-Malaria, Filariasis, and dengue fever. Housefly- Typhoid, Cholera, Leprosy, Anthrax
- Possess venoms and cause allergies.
- Some insects are a nuisance to our well-being -house flies, ants, mosquitoes.s
- Cause phobias – fear of grisly caterpillars or spiders (arachnophobia)
- Require use of pesticides and other poisons, which often harm other animals
