The Western Spruce Budworm, Choristoneura occidentalis Freeman, is a destructive conifer
defoliator moth species in the Rocky Mountains. An adult female moth will lay numerous eggs
on conifer trees. The larva will emerge from the eggs and eat the trees' new foliage. Below is a
life table used to record the survival of the budworm through its metamorphosis. Developmental
Stage # of individuals that enter that stage Mortality factors # of individuals that die within
specific stage Percent apparent mortality Egg 215 dessication, predation A 82.33 Larva B
parasites, disease 38 69.09 Pupa 17 parasites, disease 8 C Adult D How many eggs did not
survive the first stage (Box A)?.
The Western Spruce Budworm, Choristoneura occidentalis Freeman, is a.pdf
1. The Western Spruce Budworm, Choristoneura occidentalis Freeman, is a destructive conifer
defoliator moth species in the Rocky Mountains. An adult female moth will lay numerous eggs
on conifer trees. The larva will emerge from the eggs and eat the trees' new foliage. Below is a
life table used to record the survival of the budworm through its metamorphosis. Developmental
Stage # of individuals that enter that stage Mortality factors # of individuals that die within
specific stage Percent apparent mortality Egg 215 dessication, predation A 82.33 Larva B
parasites, disease 38 69.09 Pupa 17 parasites, disease 8 C Adult D How many eggs did not
survive the first stage (Box A)?
