Abstract
Three species of crabs, Hemigrapsus oregonensis, H. nudus, and Cancer magister, were held in cages in Elkhorn Slough, Monterey Bay, California, to measure rates of infestation by the egg predator Carcinonemertes epialti and to determine whether host preference was displayed. Larval worms showed a clear preference for both species of Hemigrapsus over Cancer magister. Worm larvae also selected H. oregonensis at a rate approx- imately twice that for H. nudus.
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