Forest Unseen Pt 2 Flashcards
advertising” of toxicity with color — eg dart frogs. Colors, sounds, odors, spines, aggression.
Aposematism
The sap of the giant hogweed (or wild parsnip) causes
phytophotodermatitis
The ——— make skin unable to protect itself from sunlight, leading to blisters that can be terrible—but only if exposed to UV/sunlight.
furanocoumarins
How long does it take for giant hogweed poison to start to have its effect?
30 min
Giant hogweed compounds are used to treat ———— (with the attendant risks).
Vitiligo
(a chronic autoimmune disorder that causes patches of skin to lose pigment or color.)
Tetrachromat birds (like chickadees) can also see
UV
Two interesting facts about chickadee vision:
1) Cones 2x more dense
2) tetrachromat
Tetrachromatic vision might help spot these UV reflectors:
1) wild grapes
2) wings of some beetles
3) some caterpillars
What do Black vultures do to cool themselves when it’s very hot?
‘pee’ on their unfeathered legs
Down holds heat —— better than an equal thickness of styrofoam
10x
What can some birds such as hummingbirds and swifts so to survive cold weather?
Lower body temp by as much as 50 F.
Horsehair worms that parasitize crickets and grasshoppers make it do what?
Go to water (by moving heedlessly) where the adult worm bores out
What do horsehair worm larvae do in water?
get eaten by the larvae of mayflies, midges, and mosquitoes, whose adult forms then get eaten (upon death) by crickets.
Where are horsehair worms found?
Dry places in New Mexico (one example)
When/where did the Doctrine of Signatures originate?
Galen, 200AD
Who popularized the Doctrine of Signatures with a book in 1621 (The Signature of All Things)?
Jakob Bohme
Name 3 plants whose names are related to the Doctrine of Signatures.
Lungwort, toothwort, Birthwort
What are the aphids that feed on beech?
Beech Blight Aphids or boogie woogie aphids
What happens under beech blight aphids?
A sooty mold fungus colonizes the area where their most of honeydew falls (Trunk and branches)
What is the white fluff on Beech Blight Aphids?
A waxy material they exude that protects them from predators.
When do Beech Blight Aphids appear?
July
Describe a yellow jacket’s stinger.
Has a slight barb
What do yellow jackets eat?
They feed on nectar but feed insects to their young.
