Condylura cristata lives primarily underground, so there is very little interaction with other species. The few interactionsC. cristata consuming an earthworm. Photo credit Dr. Kenneth Catania 2009. C. cristata does have are with its prey, predators and parasites.

C. cristata patrol their tunnels, waiting for terrestrial invertabrates to pass through for them to eat. These prey include earthworms (Lumbricus terrestris) and beetle larvae (Armadillidium vulgare).  But this accounts for only about a quarter of their diet (Saunders 1988). The rest of its nutrients are obtained from underwater, where they find aquatic invertebrates, like stonefly (Plecoptera) and dragonfly (Odonata) larvae,  The "star" of the Star-nosed mole. Photo credit: Kenneth Catania 2011.annelids, mollusks, small amphibians, and fish (Saunders 1988).

Because C. cristata is so versatile as far as the habitats it can live in, it has acquired numerous predators that are found in these environments. From the aquatic environment, it has to watch out for northern pike (Esoc lucius), largemouth bass (Micropterus salmonides) and bullfrogs (Gould et al. 1998). On land, weasels, skunks, mink, and red fox (Vulpes vulpes) would not pass on the opportunity to eat C. cristata (Saunders 1988). And the few times that C. cristata is out in the open, it has to be wary of birds of prey such as red-tailed hawk (Buteo jamaicensis) and barred owl (Strix varia) (Saunders 1988).

C. cristata, similar to many moles, is often infected by isosporans. These parasites infect the digestive tract and for oocysts are then passed through the feces to the environment (Duszynski 1989). More information about isosporans can be found here.

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