File:The horse, its treatment in health and disease with a complete guide to breeding, training and management (1906) (14769093311).jpg

English: R.E.H Fig. 273. – Metamorphoses of the Bot-Fly A, Egg of Bot-Fly as it appears stuck on a hair. B, Egg of Bot-Fly, showing the Operculum or lid. C, Lid pushed aside and the larva escaping. D, Larva fully developed after having been in the stomach of the horse. E, Head of Larva, showing Hooklets by which it anchors on to the mucous membrane of the stomach. F. Bot-Fly developed from D. G, Larvae of Bot-Fly anchored on to mucous membrane of the stomach of the horse.

Identifier: horseitstreatm05axej (find matches)
Title: The horse, its treatment in health and disease with a complete guide to breeding, training and management
Year: 1906 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London, Gresham Pub. Co.
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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Text Appearing Before Image:
ucous membrane sufficiently to enable them to retain their hold until the time comes for them to quit their temporary habitation and assume the pupa, or chrysalis stage, in which the perfect fly is developed. The next illustration was taken from a portion of the stomach, showing the small tumours of the spiroptera and a number of bots attached to the membrane. A smaller variety of the bot, of a reddish colour, is sometimes seen clinging to the anus; it is known as the Oestrus /uemon-Jwidalis. 170 HEALTH AND DISEASE The eggs of the bot-fly are deposited on the hairs of the horses legs in the early summer, and they are soon hatched by the sun. The newly-hatched larvae by their movements cause a certain amount of irritation and are licked off by the horse, and in this way are quickly conveyed to the stomach, to the mucous membrane of which they at once attach themselves by means of the hooked mandibles with which they are provided. The larvae remain attached to the cuticular membrane of the
Text Appearing After Image:
Fig. 273. – Metamorphoses of the Bot-Fly A, Egg of Bot-Fly as it appears stuck on a hair. B, Egg of Bot-Fly, showing the Operculum or lid. C, Lid pushed aside and the larva escaping. D, Larva fully developed after having been in the stomach of the horse. E, Head of Larva, showing Hooklets by which it anchors on to the mucous membrane of the stomach. F. Bot-Fly developed from D. G, Larvae of Bot-Fly anchored on to mucous membrane of the stomach of the horse.. stomach for some months, probably the greater part of a year. When sufficiently developed they relax their hold and are expelled. It may be noted here, however, that treatment is of no avail; there are no safe remedies which will cause the bots to abandon their position until the proper time. But the fact of quitting their hold naturally calls attention to their existence, and the use of any remedy at this period is sure to be attended with an apparent success. The smaller red variety, the (Estrus haemorrhoidalis, deposits its eggs on

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