Transcript SPECIES INTERACTIONS CONT

Warm up 3-31:
•Using: + = good & - = bad explain which types
of symbiosis correspond to:
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(+/+)
(+/-)
(+/0)
Notes #18: SPECIES
INTERACTIONS Part 2
PP 403-404
PREDATION (+/-)
one species eats another species
predator: eater and prey: eaten
Types: carnivores, herbivores
PREY: SEA URCHINS
PREDATOR: SEA
STARS
• cyclic in nature – ↑ in prey leads to ↑ in
predators (vice versa)
• Adaptations in prey for defense against
predators
RESPONSES TO PREDATION
camouflage: Cryptic coloration disguises an animal so
it’s less visible to predators or prey
warning coloration: intended not to camouflage an organism
but to make it more noticeable
- Bright coloring, scent, or taste to warn
potential aggressors
mimicry: physical (or behavioral resemblance) of one species
to another
1. natural selection of a second moth species
favors moths who look like the bad tasting
species (bright colors)
2. color patterns may be similar
moment of truth defenses: action by prey just before death
that is unexpected by predator
alluring coloration: animals are colored so a predator's
attention is drawn to a non-vital part of the prey's body
Species Interactions
 Plant Prey Adaptations
-adaptations work towards protecting the plant from
being eaten
Ex/ Physical Defenses – thorns, spines,
sticky hairs and tough leaves
Chemical Defense – poisonous,
irritating or bad tasting
Secondary Compounds – chemicals that
are a byproduct of the plants
metabolism
Ex/ Strychnine, Capsacian & Nicotine
Homework
Turn in Notebook (1 pile)
Turn in Warm-ups (2nd Pile) 3/5/14 - 3/31/14
Response to Predation
Trifold Vocab:
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Interspecific Competition
Intraspecific Competition
Mutualism
Commensalism
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Symbiosis
Species Richness
Species Evenness
Primary Species
Pioneer Species
Warm-up 4/1
What is resource/niche partitioning?
What is competitive exclusion?