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Trichophyton mentagrophytes

Trichophyton mentagrophytes is a causative agent of  Onychomycosis, Tinea barbae,    Tinea capitis, Tinea corporis, Tinea cruris, Tinea faciei, and Tinea pedis.

(Information from @ 2005)


Trichophyton mentagrophytes Mold Pictures

Trichophyton mentagrophytes microscopic morphology

(Image Courtesy of @ 2005)

:Microscopic morphology of Trichophyton mentagrophytes kangaroo variant
showing the production of numerous characteristic thin - walled, clavate,
multi - septate macroconidia with terminal "appendages".


Trichophyton mentagrophytes colony morphology

(Image Courtesy of @ 2005)

Trichophyton  mentagrophytes kangaroo variant on Mycobiotic agar.

Cultures are cream - colored, flat, with a central umbo or slight folding, and a suede - like to downy surface, which may become powdery around the periphery with age.

Trichopyton mentagrophytes ringworm from doctor fungus

(Image Courtesy of @ 2005)


Large circular lesions with a raised erythematous advancing border on the stomach caused by Trichophyton mentagrophytes kangaroo variant.




Trichophyton mentagrophytes is a cosmopolitan fungus dermatophyte, that requires keratin for growth and can cause superficial infections of the skin, hair and nails, which may either be anthropophilic (attracted to humans especially, as a source of food) or zoophilic (prefer lower animals to humans as a source of food) in nature.  The principal reservoirs of the zoophilic varieties in nature are certain small mammals, such as rodents, hedgehogs, and rabbits, however, many other animal species may also be infected.  


Pathogenicity and Health Effects

Trichophyton mentagrophytes var. interdigitale, the anthropophilic type of isolates, are the frequent causative agents of chronic infection of the feet, the nails, and the groin.  When infecting humans, the zoophilic isolates, such as T. mentagrophytes var. mentagrophytes, are more frequently associated with inflammatory lesions of the scalp, the glabrous skin, the nails, and the bear region. 


Macroscopic Appearance

      Growth rate is moderately rapid and texture of anthropophilic isolates ranges from downy to powdery while colonies of zoophilic isolates are granular; and

      Surface colony color is white to pink while reverse is yellowish, brown or reddish brown.


Microscopic Appearance

      Spiral hyphae are frequently present;

      Microconidia are round to pyriform in shape, unicellular, appear in closely re branched clusters or along with otherwise undifferentiated hyphae, frequently numerous, however at times, may be present rarely in anthropophilic isolates ; and

      Macroconidia are often absent, but if present, mostly are club shaped, with thin, smooth walls, are multi septate, and solitary. 


The mycological information gathered and
organized in this extensive research on different
Pathogenic Molds was sourced out from the list
of informative websites and reference below:

A Clinical Laboratory Handbook:
Identifying Filamentous Fungi
St. Germain, Guy and R. Summerbell.

Mold in the Bible
Mold is NOT a new problem for humans. Read the
Bible at
Leviticus 14:45 "A house desecrated by mildew,
mold, or fungus would be a defiled place to live in, so
drastic measures had to be taken.
" Mold damage, mold contamination, and mold infestation  have always been
threats to people, animals, and plants. Mold Prevention is always needed.
"The way to control indoor mold growth is to control moisture, reports the U.S. Environmental Protection Agency. To keep indoor humidity in the mold-safe 30-40%, use our Surround Air Dehumidifier.
Top 10 Mold Mistakes. See Mold Growth Photo's.
Mold Home Remedy Recipes. Read Bleach Mold Myth  Mold Health Problem.


Browse these Webpages for more Trichophyton species information:

[Trichophyton concentricum]
[Trichophyton equinum]
[Trichophyton megninii]
[Trichophyton mentagrophytes]
[Trichophyton rubrum]
[Trichophyton schoenleinii]
[Trichophyton soudanense]
[Trichophyton tonsurans]
[Trichophyton verrucosum]
[Trichophyton violaceum]
[Trichophyton yaoundei]


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