VMP 420 Lecture Notes - Lecture 20: Sucking Louse, Myiasis, Arachnid
28 Feb 2020
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Arthropod pests: endo- and ectoparasites of livestock and diseases they cause. Flies: nuisance, biting flies (usually take blood meals, grubs, endoparasites- live inside the body of the animal. Insects routinely impact all animals: arachnida, 8 legs, hemimetabolous. Insecta: 6 legs, flies, holometabolous, whole metamorphosis, egg-larva-pupae-adult, lice, hemimetabolous, partial metamorphosis. Losses: nuisance, annoyance, blood loss, ectoparasites predominantly, pool feeding or vessel feeding, slicing and sipping or piercing and sucking, endoparasites, myiasis: invasion of host by larvae, economics, wt loss, appearance. House fly and face fly do not feed on blood. Stable fly and horn fly feed on blood. Biological: attack with another predator insect or something. Its feeding is done via the sponging mouth parts and then it spreads the pathogens via its mouthparts, its feet, and its feces. Have a crop to use where there is liquid to help break down hard feed material via regurgitation into the crop. Eggs survive very well in wet grain/manure/etc.
