Population Dynamics of the Spruce Budworm Choristoneura Fumiferana
@article{Royama1984PopulationDO, title={Population Dynamics of the Spruce Budworm Choristoneura Fumiferana}, author={T. Royama}, journal={Ecological Monographs}, year={1984}, volume={54}, pages={429-462} }
Using the latest observations, experiments, and theoretical studies, I have reanalyzed spruce budworm data from the Green River Project, and now propose a new interpretation of the population dynamics of the species. Spruce budworm populations in the Province of New Brunswick have been oscillating more or less periodically for the last two centuries, the average period being °35 yr. Local populations over the province tend to oscillate in unison, though their amplitudes and mean levels are not…
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References
SHOWING 1-10 OF 36 REFERENCES
NOTES ON THE EFFECTS OF PHYSICAL FACTORS ON THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (CLEM.)
- Environmental Science
- 1947
Females in the dark-adapted state exbihit either photonegative behaviour or compassing behaviour, with no evidence that there is any orderly transition from one type of behaviour to the other.
Field fecundity of the spruce budworm (Lepidoptera: Tortricidae) as determined from regression relationships between egg complement, fore wing length, and body weight.
- Environmental Science
- 1980
The assumption that the number of eggs laid by a spruce budworm moth in the field is the same as the number laid under laboratory conditions is shown to be false and has implications in population dynamics studies of the spruce Budworm.
ASPECTS OF MATING IN THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)
- Biology
- 1971
Normal matings of Choristoneura fumiferana (Clem.) resulted in the transfer of single, persistent spermatophores, and the presence of a sperMatophore in the bursa of the female was not always indicative of successful insemination.
THE ROLE OF CLIMATE AND DISPERSAL IN THE INITIATION OF OUTBREAKS OF THE SPRUCE BUDWORM IN NEW BRUNSWICK: II. THE ROLE OF DISPERSAL
- Environmental Science
- 1956
Analysis of the available weather data showed that the 1912 and 1949 outbreaks developed after several consecutive dry summers, and this suggests that the New Brunswick outbreaks are also a continuation of this spread.
Effects of the Destruction of the Current Year's Foliage of Balsam Fir on the Fecundity and Habits of Flight of the Spruce Budworm
- Environmental ScienceThe Canadian Entomologist
- 1953
When spruce budworm larvae emerge in the spring, they either mine the needles of old foliage or feed upon the freshly opened staminate flowers of balsam fir. As soon as the vegetative buds begin to…
A SEQUENTIAL SAMPLING TECHNIQUE FOR SPRUCE BUDWORM EGG SURVEYS
- Biology
- 1954
The sequential plan, having no fixed sample size, was tested in 1953 and proved very useful, particularly in eliminating superfluous sampling at points where the infestation was definitely light or definitely severe.
COLLECTION AND ANALYSIS OF RADIAL-GROWTH DATA FROM TREES FOR EVIDENCE OF PAST SPRUCE BUDWORM OUTBREAKS
- Environmental Science
- 1962
Methods used in the collection of radial-growth data from host and non-host trees of the spruce budworm for the purpose of establishing evidence of past spruce budworm outbreaks are described. The…
Evaluation of Mortality Factors in Insect Life Table Analysis
- Environmental Science
- 1981
The aim of this paper is to develop the notion of "killing power" of a mortality factor, so that it can properly evaluate and incorporate in a model the effect of any given factor on the dynamics of the animal population concerned.
Stock and Recruitment
- Environmental Science
- 1954
Plotting net reproduction (reproductive potential of the adults obtained) against the density of stock which produced them, for a number of fish and invertebrate populations, gives a domed curve…
POPULATION PROCESSES IN THE VOLE AND THEIR RELEVANCE TO GENERAL THEORY
- Environmental Science
- 1960
According to field evidence the individuals in a declining vole population are intrinsically less viable than their predecessors, and changes in the severity of their external mortality factors are insufficient to account for the increased probability of death.