Sex and Behaviour (b) Productive behaviours and Mating Systems Flashcards
Mating systems are based on…
How many mates an individual has during one breeding season
Mating systems range from….
Polygamy (polygyny and polyandry) to monogamy
Monogamy is the…
Mating of a pair of animals to the exclusion if all others
Polygamy is when…
Individuals of one sex have more than one mate
Polygyny is when…
One male mates exclusively with a group of females
Many animals have…
Mate-selection courtship rituals
Successful courtship behaviour in birds and fish can be a result of…
Species-specific sign stimuli and fixed action pattern responses
Sexual selection selects for…
Characteristics that have little survival benefit for the individual for the individual, but increases their chances of mating.
As a product of sexual selection, many species exhibit…
Sexual dimorphism
In sexual dimorphism…
Females are generally more inconspicuous, while males will usually have more conspicous markings.
Reversed sexual dimorphism occurs in some species, where…
Females are more conspicuous, while males are less so.
Female choice involves…
Females assessing honest signals of the fitness of males
Honest signals indicate… (2)
- Favourable alleles that increases that increase the chances of survival of offspring (fitness) 2. A low parasite burden suggesting a healthy individual
Some bird species exhibit lekking behaviour, where…
Dominant males occupy the centre of the lek,
During a lek, subordinates and juveniles…
Gather at the fringes as ‘satellite’ males
