Predation
true predators--consumption of living organisms with death of prey
grazers--consumption of living material, but doesn't necessarily result in the death of the food item
parasitism--consumption of material within a host, but good parasites don't kill their hosts
parasitoid--the predator lays eggs in host species, when eggs hatch, host is dead

optimal foragaging strategy

search--search image

handling--

switching

marginal value theorem

functional and numerical

numerical--increase your numbers when you have food

functional three different  responses

detritovores--feeds on dead particulate material