Camoflauge, Mimicry and Imperfect Adaption Flashcards
Henry Walter Bates
● Amazon Rainforest
● Collected 14,712 species, 8,000 were new
● Butterflies of Ega
○ 550 species
● Batesian Mimicry: non poisonous species mimicking poisonous species
Batesian Mimicry
non-poisonous species mimicking poisonous species
Imperfect Adaption
Laryngeal Nerve
Evolution
tinkering
Camouflage and Mimicry
Please see slides
Why is tinkering a good analogy for natural selection?
evolution can only work with what already exists, it can’t spontaneously conjure up new body parts
Homologous characters
are constructed with same body parts (i.e. bones), but have been adapted to serve very different functions. Homologous characters reflect shared ancestry!
What do assassin bugs do?
Assassin bugs prey on termites. They are born “naked”, with sticky hairs all over them, but visit a termite nest and pick up pieces of nest material and attach it to themselves. On a leaf, they don’t look camouflaged, but on the nest, they look and smell just like the nest.
Exaptation
Functional shift, thoracic segments used for thermoregulation in insects have been repurposed for flight in some species