PSYO 2160 Lecture Notes - Lecture 6: Altricial, Precocial, Pair Bond
21 May 2018
School
Department
Course
Professor
Mating systems
- Mating systems have different implications for mating success for males vs. females.
Reproductive effort
- Breeding involves a lot of energy and time investment, it also brings possible risks.
(vulnerability to predators).
- Breeding activity may reduce the reproductive success of the individual.
Parental care
- refers to the activities involved in the protection and maintenance of the species’ eggs or
offspring or those of a kin.
- there are 3 types: paternal,, maternal, alloparental (other than mother an father).
Offspring
Precocial: mature and mobile (after birth).
Altricial: helpless, immobile.
Monogamy
- Male and female mate with only one another during a given breeding season.
- Monogamy should result in increased fitness for a species in a given enviroment.
- Involves different dopamine receptors (to facilitate pair bond formation).
Polygamy
- Either males or females have more than one mate during a given breeding season.
- Polygyny: males mate with more than one female.
- Polyandry: females mate with more than one male per breeding season.
- Sequential polygamy: temporary bonds are made during breeding season.
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Document Summary
Mating systems have different implications for mating success for males vs. females. Breeding involves a lot of energy and time investment, it also brings possible risks. (vulnerability to predators). Breeding activity may reduce the reproductive success of the individual. Parental care refers to the activities involved in the protection and maintenance of the species" eggs or offspring or those of a kin. there are 3 types: paternal,, maternal, alloparental (other than mother an father). Male and female mate with only one another during a given breeding season. Monogamy should result in increased fitness for a species in a given enviroment. Involves different dopamine receptors (to facilitate pair bond formation). Either males or females have more than one mate during a given breeding season. Polygyny: males mate with more than one female. Polyandry: females mate with more than one male per breeding season. Sequential polygamy: temporary bonds are made during breeding season.
