, Volume 99, Issue 3, pp 409-414

Predatory behavior ofPhacellophora camtschatica and size-selective predation uponAurelia aurita (Scyphozoa: Cnidaria) in Saanich Inlet, British Columbia

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Abstract

Predation uponAurelia aurita byPhacellophora camtschatica was studied by SCUBA divers in a fjord in British Columbia between July and September 1986. The behavior and size ofP. camtschatica affected their foraging success. Larger predators captured more and larger prey. The size and behavior of the prey also affected the probability of capture. Predators were found at densities which can affect both the size composition and the overall numbers of the prey population.

Communicated by J. M. Lawrence, Tampa