publication . Article . 2008

Differential Survival of Ichthyophonus Isolates Indicates Parasite Adaptation to its Host Environment

S. E. LaPatra; Paul K. Hershberger; Jacob L. Gregg; Maureen K. Purcell; C. A. Pacheco;
Open Access
  • Published: 01 Oct 2008
In vitro viability of Ichthyophonus spp. spores in seawater and freshwater corresponded with the water type of the host from which the spores were isolated. Among Ichthyophonus spp. spores from both marine and freshwater fish hosts (Pacific herring, Clupea pallasii, and rainbow trout, Oncorhynchus mykiss, respectively), viability was significantly greater (P < 0.05) after incubation in seawater than in freshwater at all time points from 1 to 60 min after immersion; however, magnitude of the spore tolerances to water type differed with host origin. Ichthyophonus sp. adaptation to its host environment was indicated by greater seawater tolerance of spores from the ...
Medical Subject Headings: fungi
free text keywords: Ecology, Evolution, Behavior and Systematics, Parasitology, Mesomycetozoea, biology.organism_classification, biology, Parasite hosting, Freshwater fish, Clupea, Incubation, Spore, Ecology, Ichthyophonus, Rainbow trout, Zoology
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