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Mating Behaviour of Microsporum canis from Human Ringworm Cases in Hokkaido Prefecture in Japan
Author(s) -
Kubo Hitoshi,
Iizuka Hajime,
Shibaki Hideomi
Publication year - 1987
Publication title -
the journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 65
eISSN - 1346-8138
pISSN - 0385-2407
DOI - 10.1111/j.1346-8138.1987.tb03568.x
Subject(s) - microsporum canis , canis , mating type , strain (injury) , mating , biology , veterinary medicine , zoology , microbiology and biotechnology , ecology , medicine , genetics , anatomy , antifungal , gene
Two‐hundred and seventy‐nine isolates of Microsporum canis obtained from Japanese human ringworm cases in Hokkaido prefecture during the past 5 years were paired with either the Nannizzia otae (+) or (–) tester strain by the standard hair soil plate technique. Among the 279 M. canis isolates, 257 were (–) mating type, 8 were (+) and 14 were nonreactive. Our results are in accord with the current view that the predominant strain of M. canis in Japan (or in the world) is the (–) mating type strain. However, contrary to the previous assumption, the (+) mating type strain was not as rare as expected (3% of the total successful mating strains), at least in Hokkaido prefecture. The N. otae (+) strain might also have an unequal geographic distribution, since 10 out of the 12 isolates of the N. otae (+) strain so far reported have originated from Hokkaido prefecture.