SCHISTOCEPHALUS INFESTATION IMPROVES PREY-SIZE SELECTION BY 3-SPINED STICKLEBACKS, GASTEROSTEUS-ACULEATUS

Schistocephalus-infected sticklebacks ate slightly less but fed more selectively on larger prey than non-infested fish, It follows that, in the short-term, the net energy gain in foraging is larger for infested fish. This matches the expectation that infested sticklebacks compensate energy losses due to Schistocephalus.