Related topics: prey

Predators play irreplaceable role in ecosystems

New research recently published in Oikos shows that predators play a unique and important role in ecosystems by creating "ecological hotspots"—localized areas important for plants and animals.

Researchers uncover new ways to combat pathogenic bacteria

Scientists from Skoltech and research centers in Sweden and Switzerland have presented results that explain the mechanism of interaction between bacteria and phages—viruses that infect bacterial cells. The discovery is ...

Italy's clam farmers fear blue crab 'invasion'

In the shallow waters of the Scardovari lagoon, fishermen catch clams for Italy's beloved spaghetti alle vongole, alongside mussels and oysters. But an invader risks putting them out of business.

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Predation

In ecology, predation describes a biological interaction where a predator (an organism that is hunting) feeds on its prey, (the organism that is attacked). Predators may or may not kill their prey prior to feeding on them, but the act of predation always results in the death of the prey. The other main category of consumption is detritivory, the consumption of dead organic material (detritus). It can at times be difficult to separate the two feeding behaviors, for example where parasitic species prey on a host organism and then lay their eggs on it for their offspring to feed on its decaying corpse. The key characteristic of predation however is the predator's direct impact on the prey population. On the other hand, detritivores simply eat what is available and have no direct impact on the "donor" organism(s).

Selective pressures imposed on one another has led to an evolutionary arms race between prey and predator, resulting in various antipredator adaptations.

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