However, Tallack et al. reported that cerium mischmetal was entirely ineffective[5] against Atlantic spiny dogfish in the Gulf of Maine. Mandelman et al. reported that the repellent effect disappeared after starvation using captive Atlantic spiny dogfish, and that a species-specific variation in response to the mischmetals exist between captive Atlantic spiny dogfish and dusky smoothhounds (Mustelis canis).[6]