| geographic variation in feeding preference of a generalist herbivore: the importance of seaweed chemical defenses. | the ecological impacts of generalist herbivores depend on feeding preferences, which can vary across and within herbivore species. among mesoherbivores, geographic variation in host use can occur because host plants have a more restricted geographic distribution than does the herbivore, or there is local evolution in host preference, or both. we tested the role of local evolution using the marine amphipod ampithoe longimana by rearing multiple amphipod populations from three regions (subtropical ... | 2013 | 23263529 |