Which observation led ecologists to conclude that resource limitation is not the only factor driving snowshoe hare cycles?
A) Some declining hare populations do not lack food. B) Experimental addition of high quality food prevents hare populations from declining. C) Hare reproductive rates peak several years before densities reach a maximum. D) Hare population sizes rose and fell in synchrony across broad regions of the Canadian forest.
A) Most parasitoids kill their hosts. B) Parasitoids lay eggs in or on another insect. C) Parasitoid larvae do not eat the host insect. D) Parasitoid larvae remain in the host insect.
Females in the wasp genus Nasonia typically lay eggs in the pupa of blowflies. The wasp eggs hatch into larvae, and the larvae kill and eat the fly pupa. Based on these observations, which statement is false?
A) The wasps and the blowflies are engaged in a predatory relationship. B) The wasps are parasitoids. C) The wasps can be thought of as both predators and parasites, albeit unusual ones. D) The wasps are generalist.