. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS 11 CHIGGER INFESTATION Cbttse.—The common American chigger, Trombicula irritans (also called harvest mite), is a small, red or orange-yeUow mite (fig. 7) which as a six-legged larva (the adult mite has eight legs) attacks man and the domesticated animals. It occurs from New York to_ central Mexico and from the Atlantic Ocean to the Eocky Moun- tains. A very closely relates species occurs in the northern and western part of this country. Chiggers have been thought to bur
. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS 11 CHIGGER INFESTATION Cbttse.—The common American chigger, Trombicula irritans (also called harvest mite), is a small, red or orange-yeUow mite (fig. 7) which as a six-legged larva (the adult mite has eight legs) attacks man and the domesticated animals. It occurs from New York to_ central Mexico and from the Atlantic Ocean to the Eocky Moun- tains. A very closely relates species occurs in the northern and western part of this country. Chiggers have been thought to burrow into the skin and die there, but recent investigations indicate that they do not burrow, but merely attach by the mouth parts, and if left alone become engorged and fall off. Symptoms.—Chiggers cause intense itching and this results in scratching and rubbing which in turn often result in the formation of sores with subse- quent bacterial infection. Hunting dogs are espe- cially subject to atj^^ck, owing to exposure as they range over chigger-infested territory. The chiggers attach most often about the head, feet, and belly, causing scattering eruptions which may contain pus. Chiggers usually attach singly, but a dozen or so sometimes attach at one point. Under favorable ^"°™^j^~:?'''^ "S?"" ,.,. ,, 1 .ji 1 1 1 1 J mon American cmg- conditions they may be seen with a hand lens, but ger, Trombicuia as a rule chigger infestation in dogs or cats would Fro^Ewfng^Ind be suspected from signs of itching coupled with a oudSim'cliioron history of chigger attacks on man at the same time measurements: J • ii. • • -J. Newly hatched and in the same vicinity. iarva,33oiongbyi6o Treatment.—Sulphur ointment will destroy chig- gers at the point of attachment and in some cases 320 microns wide, appears to have a favorable effect on,infected sores H.^f.^E^^ngo ^^ due to scratching the places attacked by chiggers. Alcohol in free and repeated a
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin
