sentences:  However, "H. colymba" adults have completely disappeared from stream sites in western Panama due to chytridiomycosis.Tadpoles are also susceptible, exhibiting loss of keratinized mouthparts when infected.Because they have now disappeared from much of their western chytridiomycosis-infected range, these frogs were ranked as high priority for "ex situ" conservation in an amphibian ark assessment.