. A manual of veterinary hygiene. Veterinary hygiene. PAEASITES 431 The Muscidce are a very large family, several of which are not only blood-suckers but transmitters of disease. Musca domestica, the common house-fly, lays its eggs in horse manure and here the maggots feed. Horses may be largely prevented from attacks by the use of netting or a body cover, also by keeping the stable dark, and hanging up bushes or strings for the flies to settle on; further the insects may be driven out by smoke. All these measures are only partly successful by themselves, and more valuable when combined. Well
. A manual of veterinary hygiene. Veterinary hygiene. PAEASITES 431 The Muscidce are a very large family, several of which are not only blood-suckers but transmitters of disease. Musca domestica, the common house-fly, lays its eggs in horse manure and here the maggots feed. Horses may be largely prevented from attacks by the use of netting or a body cover, also by keeping the stable dark, and hanging up bushes or strings for the flies to settle on; further the insects may be driven out by smoke. All these measures are only partly successful by themselves, and more valuable when combined. Well bred horses are severely punished by the irrita- tion caused by these flies. Stomoxys cakitrans (Fig. 183) re- sembles the house-fly, and is often mistaken for it, but the proboscis projecting in front of the head dis- tinguishes it. By means of this proboscis it is capable of blood- Fig. iss.—stomoxj^s caid- sucking and inflicting a severe <™»^ / twice natural size. sting; it is a most irritating fly in the stable. Within this fly is passed the larval stage of a parasite of the ox, Filaria labiato-papillosa, which is inoculated into the animal by the bite of this insect. Closely allied to the above are the Hcematohia, blood- sucking flies which never enter buildings but attack animals at pasture. An American species, known as the 'horn-fly,' selects the base of the horns to rest on, and attacks the back, flank, and upper parts of the limbs. This fly not only irritates horses by its bite, but is a carrier of disease; it is believed to convey the trypano- some of ' mal de caderas ' of the Argentine, and Haslam found in the body of a Central African variety the trypano- some of Tse-tse disease. The Glossina contains eight species, of which G. morsitans genus is one of the most important.* This fly is found in * For a full accoimt of the Tse-tse flies, see the monograph on this subject by Mr. Austen, British Museum of Natural History Pubhca tions. Digitized by Microsoft®.
Size: 1712px × 1460px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkwrjenkins
