The following points highlight the six major diseases caused by mosquitoes in man. The diseases are: 1. Malaria 2. Yellow Fever 3. Dengue Fever 4. Filariasis or Elephantiasis 5. Encephalitis 6. Dermatobia. Disease # 1. Malaria: Malaria is a deadly human disease. It is-transmitted by Anopheles', malaria is caused by a parasitic protozoan Plasmodium which spends part of its life [...]
The following points highlight the nine important larval forms found in Crustacea. The larval forms are: 1. Nauplius Larva 2. Metanauplius Larva 3. Protozoaea Larva 4. Zoaea Larva 5. Cypris Larva 6. Mysis or Schizopod Larva 7. Megalopa Larva 8. Phyllosoma Larva 9. Alima Larva. Larval Form # 1. Nauplius Larva: Nauplius larva is egg-shaped and un-segmented. It has a [...]
In this article we will discuss about the economic importance of insects. A. Beneficial Insects: Insects which produce honey, wax, lac, dyes and silk are commercially beneficial. Some insects are very helpful in destroying injurious insects. 1. Commercial Products: Apis, the honeybees produce millions of tons of honey every year, it also gives bees wax from its combs. Benefits of [...]