Kathleen Page

Tiny Animals Living in an Extreme Environment: Bdelloid Rotifers in Acid Mine Waters

Bdelloid rotifers were found in abundance in a standing pool of acid mine drainage within Blue Ledge mine. The pool, known as Red Pond, contains high concentrations of dissolved sulfide ores and toxic heavy metals including iron, copper, zinc, and cadmium. Red Pond is an extreme environment; dissolved metals and low pH make it toxic for most microorganisms and all other animals. Bdelloid rotifers were isolated from Red Pond, DNA was extracted, and the coxC gene was sequenced. DNA sequence analysis indicated that these rotifers represent a novel, never before described species of rotifer. DNA sequencing revealed that the Blue Ledge mine rotifer was most similar to Bdelloid rotifers in the genus Adineta but was almost as closely related to species in the genus Habrotrocha. Morphologic characteristic place the rotifer in the family Habrotrochidae. More research is needed to characterize this novel species that we have tentatively named Habrotrocha metaliferum.