Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Lymantrid
Eats all hardwoods but likes oaks Introduced for silk industry Sunlight triggers epizootic Feemales cant fly |
Gypsy Moth
|
|
|
9 year population explosions
Lymantrid Decreases overstory Eats ALL growth Wingless females 4th year epizootic |
Douglas Fir Tussock Moth
|
|
|
Tortricid
Eats firs spruce and larch Diapause in hibernaculum Young "balloon" 12 year outbreaks |
Western Spruce Budworm
|
|
|
Feeds on dead material
|
Saprophagous
|
|
|
Reproduces while still immature
|
Paedogenesis
|
|
|
# of females in a tested population
|
Sex Ratio
|
|
|
# of females in a tested population
|
Sex Ratio
|
|
|
Fecundity Multiplied by generations
|
reproductive potential
|
|
|
Repellant, feeding deterrant or growth regulant
|
Allomone
|
|
|
Alkaloids, terpenoids or phenolics
|
Repellants
|
|
|
Higher reproductive potential than environmental carrying capacity
|
R selected
|
|
|
Western hemlock
Quantitative use of resources Slow growth Cant defend in climax Branches, leaves |
Predictable/apparent
|
|
|
Doug fir
Flowers, buds, fruit Qualitative Young tissues |
Unpredictable
|
|
|
Relative ability to overlap arms race
|
Ecological valence
|
