Sex and Behaviour Flashcards
Which sex invests more during reproduction
females
Difference between r selected and K selected species in SIZE
small
big
Difference between r selected and K selected species in GENERATION TIME
short
long
Difference between r selected and K selected species in MATURATION TIME
rapid
slow
Difference between r selected and K selected species in REPRODUCTIVE LEVEL
once
multiple
Difference between r selected and K selected species in OFFSPRING PRODUCED
large
fewer
Difference between r selected and K selected species in ENERGY INPUT FROM PARENTS
small
large
Difference between r selected and K selected species in PROBABILITY OF OFFSPRING SURVIVING
low
high
What type of selection species tends to occur in UNSTABLE environments
r selection
Benefits of internal fertilisation
increased chance of fertilisation
fewer eggs needed
offspring protected
increased survival rate
Costs of internal fertilisation
need to find mate
requires direct transfer of gametes
benefits of external fertilisation
large no of offspring
costs of external fertilisation
gametes predated or not fertilised
no/limited parental care
What is monogamy
mating w exclusion of all others
(exclusive)
what is polygamy
more than one mate
what is polygyny
many females
what is polyandry
many males
In what animals are mating rituals most common
fish and birds
Examples of successful courtship
species specific sign stimuli
fixed attraction pattern response
Why do females have female choice
choose mate w best fitness to produce fit offspring
What is lekking
dominant males occupy centre of lek and therefore attract most women in lek
