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Insect Adaptive Feature
Transcript of Insect Adaptive Feature
armour / protection
muscle attachment - strength
light weight - flight
young & old in different niches -- don't compete
facilitates a dormant state for harsh conditions
flee from threat
leave hostile environment
migration / dispersal / spread
gather food from large areas
name the insect
short life cycle
can have several generations/year
can exploit many niches
require less food per individual
short life cycle allows
quick adaptation ...
1 human generation ~25 years
large reproductive capacity
hundreds of offspring ...
good chance at least a few
will adapt to change
High Reproductive Ability
eggs = 359
sex ratio 1:1
1 egg = 1 larva
mortality = 0
start with 2 individuals ...
after 1 generation ...
pop'n = 359 (duh)
after 4 generations ...
pop'n = 2 billion
can outbreak quickly
can "bounce back" quickly
quiescience: simple & temporary, in response to immediate adverse conditions
diapause: 'arrested development', start/end triggered by env. cues to avoid harsh season
spread: local movement
dispersal: movement from
favourable env. to somewhere else
migration: directed movement to
a favourable place
repellants / poisons
rely on recognition
in tents, duff, nests
inside plant parts:
warning (ladybug, Monarch butterfly)
mimicry (Viceroy Butterfly, clear-wing moths)
deceptive (eye spots)