Lectures 19 & 20
Competing via the depletion of a shared resource.
What is scramble/exploitative competition?
Beneficial interactions for both species involved, short-term or long-term.
What is mutualism?
Pikas
What animal is Prof Frederickson obsessed with?
(+20) to everyone
Individuals of different species competing for the same resources in an ecosystem.
What is interspecific competition?
The study of insects.
What is entomology?
Reciprocal adaptation.
What is coevolution?
A population that may go extinct due to unfavourable conditions, usually saved by a constant flow of members from other populations.
What is a sink population?
A species that is able to thrive in a wide variety of environmental conditions and can make use of a variety of different resources
Hint: a heterotroph with a varied diet
What is a generalist species?
The number of species present in a community.
What is species richness?
What entomologists mean when they say 'bug.'
What are Hemipterans?
Invaders’ impact being successful due to having fewer natural enemies in their new range, compared to their native range
What is the enemy release hypothesis?
Generational transmission of viruses or symbionts from parents to their offspring
What is vertical transmission?
Local extinction
What is extirpation?
A group of populations that are separated by space but consist of the same species.
Hint: a population of populations
What is a metapopulation?
A close and long-term biological interaction between two different organisms.
Bonus (+100) Can you name what an organism in such an interaction is called?
What is symbiosis?
What is a symbiont?
1. Two species may stably coexist
2. Species 1 may always win
3. Species 2 may always win
4. The winner may depend on starting populations
What are the four possible outcomes of the Lotka-Volterra competition?
Species B = bad colonizer, good competitor
What is competition-colonization trade-off?
This is just a free points question. Everyone gets +200
I'm very tired
Each species inhibits its own population growth more than it inhibits the growth of other species' populations.
What is the condition for stable coexistence?
A highly vascularized organ that houses symbiotic bacteria that provide food for their host.
What is a trophosome?