Cyclodevelopmental life cycle is seen in:
Correct Answer: Filaria
Description: Filaria Transmission of ahropod-borne diseases occur by following methods: 1.Direct contact - In this method of spread, the ahropods are directly transferred man to man e.g. scabies, pediculosis 2.Mechanical Transmission - Here the disease agent is transmitted mechanically by the ahropod. e.g. housefly transmitted diseases 3. Biological Transmission - In biological transmission the disease agent multiplies or undergoes some developmental change with or without multiplication in the ahropod host.It is of three types: a. Propagative - The agent merely multiplies in vector, but no change in form e.g. plague bacilli in rat flea. b. Cyclopropagative - The agent changes in form & multiplies in the body of ahropod e.g. malarial parasites in mosquito c. Cyclodevelopnzental - The disease agent undergoes cyclical changes but no multiplication e.g. filarial parasite in culex mosquito and guinea worm embryo in cyclops. Other methods Transovarian transmission - The infectious agent is transmitted veically from the infected female to her progeny in the vector e.g. Ticks transmitting Ricketssial diseases Trans-stadial transmission - Transmission of the disease agent from one stage of the life cycle to another as for example nymph to adult e.g. Ticks.
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now