Intraspecific competition

Question 1

Competition

Answer 1

is an interaction between individuals, brought about by a shared requirement for a resource in limited supply, and leading to the reduction in survivorship, growth, and/or reproduction of the competing individuals concerned

Question 2

Intra-specific

Answer 2

occurs among members of the same species

Question 3

Self-thinning

Answer 3

is the progressive decline in density overtime

Question 4

3/2 power rule

Answer 4

describes the relationship between plant density and plant weight

Question 5

Natal dispersal

Answer 5

is movement between the natal area or social group and the area or social group where breeding takes place; animals are born in one place and move to another to breed and don’t return to their birthplace

Question 6

Breeding dispersal

Answer 6

adult movement between breeding areas or social groups to obtain better reproductive success

Question 7

Natal philopatry

Answer 7

is the tendency for offspring to remain in their natal area and share the home range or territory with their parents and siblings

Question 8

Costs of Natal Philopatry

Answer 8

1) inbreeding
2) reproductive suppression
3) kin competition
(Mexican Jays)

Question 9

Reproduction suppression

Answer 9

adult breeders suppress reproductive development of young through chemical means and behavioral methods

Question 10

Kin competition

Answer 10

Young compete with relatives for food, nest sites, and/or mates

Question 11

Benefits of Philopatry

Answer 11

1) Adaptation to local conditions
2) Familiarity
3) Kin cooperation

Question 12

Familiarity

Answer 12

being familiar with local physical and social settings

Question 13

Kin Cooperation

Answer 13

increase inclusive fitness through cooperation

Question 14

Costs of Natal Dispersal

Answer 14

High energy costs, increased predation, lack of familiarity (Norway rats)

Question 15

Benefits of natal dispersal

Answer 15

1) avoiding kin competition

2) avoiding inbreeding

Question 16

Home range

Answer 16

is the area normally occupied by an animal or group of animals. Home ranges can and do overlap

Question 17

Territory

Answer 17

is an area occupied by an animal or group of animals from which others are excluded by aggression or threat. Territories are defended.