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ch 9 life hystory - Coggle Diagram
ch 9 life hystory
represent scedual of an organisms life
growth, development, reproduction, survival
fecundy=number of offspring produced by an organism per reproductive period
parity= # of reproductive episodes an organism experences
parental investment=time and energy given to an offspring by parent/s
longevity/life expectancy=lifespan
slow to fast LHyst
on average only one offspring lives long enough to reproduce
r and k strats are outdated
fast
shorter lifespan
faster growth
early sex mature
reariler reproduct
greater# of offspring
small parentel investment
slow
longer lifespan
slow growth
late sex mature
delayeyed repro
fewer offspring
greater parentel invest
combos in plants
abiotic stress
slow growth, late sex mature,low energy for seeds, inportant vegatat repro
competition
fast growth, earily sex mature,low seed product, often veg growth
disturbance frequency/ruderals
fast growth, earuly sex mature, high seed production, rarealy vegatative repro
complex cycles
metamorphasis common in inverts
traits are shaped by trade offs
principle of allocation=when resources are devoted to one body structure, function, or behavor they cannot be used for another.
Natural selection favors those individuals that allocate their resources in a way that achieves maximum fitness.
mating effort vs parental survival
more mating efforet less fitness general
offspring # vs size
more seeds smaller seeds/less seeds bigger seeds.
some times size stays the same despite large or small numbers
offspring vs parental growth
too many children hinder the growth of the parent
offspring vs parental care
parent has to care for all of its offspring if it does care
parental care vs parental survival
parents put themselves at risk for defence and finding food
growth vs age of sexual mature and longev
determinate growth=once reproduction starts growth stops.
indeterminate growth=growing still after first reproduction
life hyst are sensative to the enviroment
stimuli for change
many rely on photo period(light in a day)
effect of resources
more sesources faster growth
effect of predation=more embreos faster growth
effect of global warming
higher temps changing breeding times and birth times ect
alter initiation of flower production
organisims defer in the number of times they reproduce but all eventualy become senescent
parity=number times reproduction happens
many reproduction health decline is slow vice virese(rats/octopus)
semelparity/iteroparity
semelparity=reproduce only one
iteroparity=reproduce multable times
annuel=lifespan 1 year
perennial =lifespan more than one year
senescence=gradual decline in fecundity and increase in chance of mortality. (humans)
because of natural wear and tear