Aquatic Parasite Observatory


The Aquatic Parasite Observatory at the University of Colorado is a collaborative effort that aims to explore the diversity, distribution and pathology of parasitic infections in North American aquatic communities. We focus in particular on macroparasite infections from a variety of host species found in freshwater ecosystems, including amphibians, fishes, birds, and invertebrates. Our goals are to both examine the role of such infections in disease outbreaks and to better understand the biology of these unique organisms.

A short film showcasing the investigative studies on the causes and consequences of frog malformations conducted by Dr. Pieter Johnson at the University of Colorado.

Browse by Hosts:

Click on an image below to browse through different classes of hosts and explore the patterns of parasite infections recorded by APO in each host species





"Planorbella trivolvis" by Scott Bauer is under public domain | Cropped from original
"Bluegill fish underwater" by Eric Engbretson is under public domain | Cropped from original
"Great blue heron" by The Lilac Breaster Roller is licensed under CC BY 2.0 | Cropped from original

  • © 2013 Aquatic Parasite Observatory
  • University of Colorado Boulder