<a href=showthread.php?s=&postid=9968306#post9968306 target=_blank>Originally posted</a> by gasman059
Yes but immunologically anything is possible. Parasites can survive without a host for 21 days give or take, so a month should put you in the clear, WRONG!
The free swimming tomite has less than 12 hours to find and invade a host fish, otherwise it will exhaust its energy reserves and die. Cryptocaryon can increase in numbers by approximately tenfold every six to eight days. A parasite by definition has a vested interest in co-existing with its host. As long as no unusual disturbance takes place, it will continue its idyllic existence, in harmony with its host.
Burgess, P.J. and Matthews, R.A. (1994). A standardized method for the in vivo maintenance of Cryptocaryon irritans (Ciliophora) using the grey mullet ( Chelon labrosus) as an experimental host. Journal of Parasitology, 80, 288-292.
There's plenty of literature in the Parasitology annals some even suggest non-fish host yikes!