Carcass or the remains of animals are a spatially and temporally patchy resource. Consumers of carcass during the different phases of carcass decomposition show a unique pattern i.e. insect succession i.e. resource pulses. Resource pulses are events of increased resource availability over short period that combine low frequency and large magnitude. The subject field of resource pulses is important because many natural systems are immediately influenced by some pulsed resource component. Specially, species composition (structure) and their activities (function) could be changed by pulsed resources in the incorporated habitat.