Mycological Diagnosis of Animal Dermatophytoses by Jaroslav Dvořák, Miloš Otčenášek (auth.)

By Jaroslav Dvořák, Miloš Otčenášek (auth.)

There usually are not many organic disciplines, that have skilled such quickly improvement as have human and veterinary mycology in recent times. within the preliminary phases organisms, whoEe impact on guy has now not b~en decided, were investigated on a in simple terms educational foundation and with specific connection with their taxonomic place. As lately because the thirties, the pathogenic brokers of dermatophytoses have been identified jointly below such names as "Micro­ sporum" and "Trichophyton". Such designation happened in such a lot scientific and veterinary literature without reference to the truth that fungi are organisms of a hugely complex and so much variable morphological constitution, an complex improvement and a distribution over a range of environments, infecting hosts of the animal state. The larger the credits, hence, that may be attributed to the pioneers of mycological study, the founders of recent mycology akin to R. Sabouraud, M. Langeron, R. Vanbreuseghem, Ch. W. Emmons, who elucidated the significance of mycology in human and veterinary medication. to 1 of them, Professor R. V anbreuseghem, this publication has been committed. regardless of those super efforts, many points of the biology and ecology of fungi have nonetheless remained imprecise in view of the complex increase­ ment through the quite a few levels, the variety of species and the big numbers of simply saprophytic species taking place in nature. at this time, mycoparasitic an infection in guy and animals is of extreme importance.

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Mentagrophytes var. erinacei T. mentagrophytes var. interdigitale T. mentagrophytes var. quinckeanum T. rubrum T. schoenleinii T. simii -· • T. tonsurans T. verrucosum T. violaceum T. yaoundei • •• •• T. sudanense T. terrestre •• 20 25 • • M. audouinii M. canis M. cookei M. distortum 15 10 5 • •• • • Fig. 10. Number of macroconidial "cells" (e maximal number observed, - - most frequent mnnber of "cells"). 43 9. Microconidia (aleuries, aleuriospores) The second fructification element of a dermatophytic colony are the microconidia.

14. Special hypha! formations. 7 Chlamydospores (terminal, lateral, intercalar position) Arthrospores Fig. 15. Spores of vegetative mycelium. 48 Micromorphology of the colonies is presented on the Photos 3-13. Phot. 3. Mycelium ofT. violaceum, iodine solution after lOmin. (approx. x 250). Phot. 4. Mycelium with macroconidia of M. gypseum; slide culture (approx. X 100). 49 Phot.. 5. Young macroconidia of M . gypseum; iodine solution after 10 min (approx. X 750). Phot. 6. Mature macroconidium of M.

Some irregular radial furrows develop in the paracentral zone. The periphery is flat, covering the agar surface. At first, the surface is white with a bright yellow pigment in the periphery. Its colour may also be pale rose or salmon. Later, the surface becomes cream to tan coloured. The diffusible pigment of our strains are a pale lemon yellow, lemon yellow to yellow. At first, the reverse side is a bright yellow, then pink to deep reddish brown. It may also be saffron yellow to orange. The pigment diffuses occasionally remarkably into the medium developing a peripheral ring.

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