ENT392 Lecture Notes - Lecture 8: Salivary Gland, Circulatory System, Spirochaete
29 Dec 2018
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Document Summary
However there are various events that may occur within the vector that often contribute to the probability of vector transmission, that is, enhance transmission. propagative (multiplicative) transmission. Following ingestion dcos reproduces (asexual) in vector then is transmitted at next feeding on new host. Following ingestion dcos undergo developmental changes but do not reproduce - the number available for transmission reflect the number ingested. cyclodevelopmental. Following ingestion undergoes developmental changes which may aid penetration into/through the gut, reproduce and enter salivary glands. 2 e. g. mites and ticks that feed at multiple life stages but may die. Acquired in one life stage (stadium) and are maintained through. The passage of dcos to subsequent stages or generations. Lyme disease - caused by spirochete (borrelia burgdorferi). Ingested by immature tick, accumulate if midgut divrticula and replicate. Molts , takes another blood meal, spirochetes enter haemocoele, then salivary glands. From infected female to her offspring through the egg.
