4. Discussion
Several reports have outlined the effects of environmental
conditions on histamine production in mesophilic bacteria, such as
M. morganii (Klausen & Huss, 1987), and P. damselae subsp. damselae
(Kimura et al., 2009). And also, a previous study investigated
the effect of temperature on histamine production in psychrophilic
histamine-producing bacteria (Torido et al., 2012). In contrast, there
have been no reports on the effect of both pH and temperature
upon the proliferation and histamine production of P. iliopiscarium.