Parasitology Exam 2 Questions with Correct Answers Graded A+

What type of parasites are bot fly larvae? obligate parasites What is fly strike? flies laying eggs on an animal - maggots maggots may infect wounds, soiled wool, or hair coat. If the area is not treated, healthy tissue may become invaded (facultative myiasis) What causes fly bother? adult flies What clinical signs can you see with fly bother? decrease thriftiness, decrease weight gain, decrease productivity, decrease feed conversion What is Musca autumnalis? face fly What is Stomoxys calcitrans? Stable fly What is Haematobia irritans? horn fly Where does the face fly (Musca autumnalis) deposit eggs? laid in fresh cow manure Where do the adult face flies (musca autumnalis) loiter? swarms of adults during winter are inside, in summer if animals go inside they stay on plants, post, fences What is the mechanical vector for face flies (musca autumnalis)? Keratoconjunctivitis (Moraxella bovis) What is the biological vector for face flies (Musca autumnalis)? eye worm (thelazia spp.) How can you control face flies (Musca autumnalis)? in feed insecticides, topicals, fly masks What is the biological control of face flies (Musca autumnalis)? parasitoid wasps Where do Stable flies (Stomoxys calcitrans) deposit eggs? breed in decaying hay, straw, silage, and rotting vegetable matter Where do adult stable flies (stomoxys calcitrans) loiter? prefer outdoors, light colored surfaces, swarms of adults on outside walls What is the mechanical vector for stable flies (stomoxys calcitrans)? horse stomachworm - Habronema microstoma How do you control stable flies (stomoxys calcitrans)? elimate/reduce breeding habitat, topical insecticides on walls and animals, fly strips What is the biological control for stable flies (stomoxys calcitrans)? parasitoid wasp Where do horn flies (haematobia irritans) deposit eggs? fresh cow manure, hatch, larva then burrow in manure What fly only leaves the host to lay eggs or when the host goes inside? horn fly - haematobia irritans What is the biological vector for the horn fly (haematobia irritans)? cattle filarial worm - stephanofilaria stilesi