Tsetse Fly :: essays research papers fc

tsetse fly front FlyAfrican quiescency sickness is an infectious disease of equatorial Africa. This infectious disease is caused by a protozoan organism that exists as a parasite in the blood of a number of craniate hosts. There are three variations of the disease that predominate in human beings are familial by an insect vector Two types of African sleeping sickness are caused by the following Trypanosoma rhodesiense and T. gambiense, both transmitted by the bite of the tsetse fly. Trypanosome, which early symptoms include fever, headache, and chills, followed by genus Anemia and joint pains. Later, the disease attacks the central nervous system, causing drowsiness, lethargy, and, if left untreated, death. The bicycle of this deadly disease starts out with the tsetse fly and usually remainder in death if untreated. tsetse fly go are classified in the phylum Arthropoda, class insecta, order Diptera, family Trypanosoma. Tsetse go are unusual insects. The strong point to la rge brown flies are between six to 14mm long, excluding its tree trunk (which is the trunk-like process of the head). The wings are folded and scissor-like while at rest and persuade a short distance beyond the end of the abdomen. Other flies have their wings projecting side-ways unlike the tsetse fly, which has overlapping wings. Tsetse flies are confined to Africa. There are 390 different species and foursome are found in Zambia. They are in the same family as the house and horse flies, they feed extensively on blood be it that of humans or animals. They are parasites that live in the blood or tissue of humans and other vertebrates. Egg and larval stages develop indoors the female. The female fly realizes only one egg at a time. The larva hatches from the egg and is nourished during the growing period inside the body of the parent. When the larva is full-grown, it is deposited on the ground, and it becomes a pupa. She gives birth every 9 to 10 days. Tsetse flies mate only onc e, but that mating provides enough sperm to feast the female throughout her 90 to 100 day lifespan. Female tsetses produce at most nine larvae and therefore have one of the last-place reproduction rates in the insect world. The single-celled trypanosomes that cause sleeping sickness spend their time cycling between humans and tsetse flies. They linger in the gut of the fly, absorbing amino acids and other molecules that the fly gets by biting mammals. After about ten days the trypanosomes run low into the flys salivary glands.