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37 Cards in this Set

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Benefits of insect pollination for plants.
Insects increase pollination efficiency.
Not dependent on the wind.
If the plant is rare, allows for increased diversity.
What are the major pollinator orders?
Hymenoptera, lepidoptera, diptera, coleoptera.
Pollinator Syndrome
From a plant's shape, size, smell, ect. you can tell what pollinates it.
Cantharophily
Beetle pollinated. Flowers white and dull. Bowl shaped with a strong smell.
Myophily
Feed on nectar and pollen. Diptera. Now showy. Strong corpse-like smell.
Psychophily + Phalaenphily
Colorful flowers which are closed at night = psycho.

Light colored flowers open at night = phalaen.
Melittophily
Blue and yellow. Nectar guide in UV. Shows bees where to land.
Spherophily
Fig wasps. 1 species pollinates one species. Obligate pollination
Myrmecophily
Ants.
When do insects and plants sometimes have a mutualistic relationship?
Fig/fig wasp. Obligate pollinators who each serve each other.
Colony collapse disorder.
Honey bee rapid disappearance. Farmers had 1/3 bees disappear in 2006. Vanished. 40% assumed dead.
Colony collapse theories.
We passed some environmental threshold and neonictinoids.
Neonictinoids?
Pesticides build into seeds. Banned in France. Could have caused colony collapse because there were no long term studies.
Myrmecophory
Seed dispersal by ants.
Elaisomes
Special attractants for ants to pick up seeds.
Ant/plant domatia
Plant acts as a house for the ants. Stems, thorns, and tabers with a house for the ants and food. In return, ants attack other invaders and keep the plant healthy.
What percent of insects are predators or parasites?
25%
Types of predation
1. Sit and wait
2. Active forager
3. Phoresy
Sit and wait
1. Cryptic
2. Agressive, foraging, mimicry.
3. Ambush.
4. Trap.
5. Reduced metabolism.
Active forager
1. Random.
2. Non-random. Use vision, chemicals, CO2. Ex. siimullidae - black fly is attracted only to specific animal sweat.
Phoresy
Individual transported to a larger individual of another species.
Ex. hippobossid flies - lice.
Ex. Human bot flies. Lay eggs on mosquitoes and catch a ride to humans.
Predator adaptations
Spines on legs, piercing/sucking, elongated mandible.
Parasitoid orders.
Diptera and hymenoptera.
How do parasitoids work?
Trigger immune response by laying eggs into/onto host.
How do parasitoids succeed?
1. Avoidance.
2. Molecular mimicry.
3. Destruction.
4. Suppression - hemocyte.
5. Subversion - develop despite host response.
Do parasitoids generally target one species or many?
Generally monoxenous (only targeting one) but some are oligoxenous (target a few).
Entomophagas
An insect which attacks and eats other insects.
Multiparasitism
Host gets parasitized by multiple insects.
Superparasitism
Parasitoid pulls out other's eggs to clear room for their own.
Hyperparasitism
Second parasite's larvae eat eggs of 1st parasitoid.
How do some parasitoids hijack hosts?
Lay eggs onto the young host. Regulate the host's metabolism so it can't develop too fast.
Vertebrates
Insects can be very host specific in vertebrates too. Ex. fleas.
Eusociality
True social insects. Must have caste system and cooperation with rearing of young. Multiple generations.
Examples of eusociality
Bees and ants.
Haplodiploidy
Female - fertilized eggs (2n).
Males - unfertilized eggs (n).
Altruism
Selflessness. Does it exist in the real world?
In insects it does not. Bees will sting and kill themselves to protect queen but this is mostly to protect their gene-pool.
Examples of interactions that are not eusocial
aggregation, parental care without nesting, parental care with nesting, and parental care in communal nests.