Life History Evolution - 7 | Songbirds & personalities
1 / 10
Onderdelen in deze les
Slide 1 - Tekstslide
Slide 2 - Tekstslide
A
Slide 3 - Quizvraag
Life history characteristics are traits that affect the life table of an organism, and can be imagined as various investments in growth, reproduction, and survivorship.
age- and size-specific reproductive investments
age- and size-specific mortality schedules
growth pattern
size at birth
number, size, and sex ratio of offspring
age and size at maturity
Slide 4 - Sleepvraag
Name seven traits
Slide 5 - Open vraag
What is the carrying capacity?
Slide 6 - Open vraag
The selection pressures that determine the reproductive strategy, and therefore much of the life history, of an organism can be understood in terms of r/K selection theory. The central trade-off to life history theory is the number of offspring vs. the timing of reproduction.
r - selected species
K - selected species
Organisms with a high growth rate (r);
produce a high number of offspring;
minimal parental care; short lifespans.
Suited to life in a stable environment in which they can rely on a long lifespan and a low mortality rate that will allow them to reproduce multiple times with a high offspring survival rate.
Subsist near the carrying capacity of their environment (K)
produce a relatively low number of offspring over a longer span of time, and have high parental investment.
Suited to life in an unstable environment, because they reproduce early and abundantly and allow for a low survival rate of offspring.
Slide 7 - Sleepvraag
Slide 8 - Tekstslide
Slide 9 - Tekstslide
Great tits can have different personalities, they can be very exploratory or aggressive for example. Explain how that can make a huge difference on multiple life events :
