Ctenophora predation by ctenophores may control the populations of small zooplanktonic organisms such as copepods, which might otherwise wipe out the phytoplankton (planktonic plants), which are a vital part of marine food chains. Almost all ctenophores are predators – there are no vegetarians and only one genus that is partly parasitic. If food is plentiful, they can eat 10 times their own weight per day. While "Beroe" preys mainly on other ctenophores, other surface-water species prey on zooplankton (planktonic animals) ranging in size from the microscopic, including mollusc and fish larvae, to small adult crustaceans such as copepods, amphipods, and even
Anthropology of food of food anthropology" for his work "Sweetness and Power (1985)," which linked British demand for sugar with the creation of empire and exploitative industrial labor conditions. Research has traced the material and symbolic importance of food, as well as how they intersect. Examples of ongoing themes are food as a form of differentiation, commensality, and food's role in industrialization and globalizing labor and commodity chains. Several related and interdisciplinary academic programs exist in the US and UK (listed under Food studies institutions). Anthropology of food Anthropology of food is a sub-discipline of anthropology that connects an ethnographic and historical perspective