Logically, overall foraging activity is influenced by the rate of returning foragers. Red-bellied piranhas are omnivores and primarily foragers. Wild grapes were harvested by neolithic foragers and early farmers. Instead, 93% of the foragers returned to foraging areas they had previous knowledge of. They are omnivorous foragers and feed on insects, worms, crustaceans and fish. Many gamergate species are solitary generalist foragers living in arid environments. The scout bees are the most experienced foragers in the resting swarm cluster. Skeletal and artifactual evidence of intergroup violence between Paleolithic nomadic foragers is absent as well. Australian sea lions have been described as opportunistic, benthic foragers. Thus, eastern tent caterpillars are central place foragers. They are often grouped with the hunter-gatherer San (literally "Foragers") peoples. Rather it is involved in controlling the pace at which bees develop into foragers. Carthaginian foragers and stragglers caught at a disadvantage were cut down whenever possible. After they reach a certain size, they are fed insects that foragers capture and kill. Bands of French peasants attacked some of the smaller groups of foragers.