parental care and sociality
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4 Terms
jamaican bromeliad crabs
bromeliad pools are bad nurseries - lots of predators, low o2, low pH and low calcium for shell development
solution - parental care
predators? murder
anoxia? picking out decaying organic matter
low pH and low calcium? collect snail shells and place them into nursery pools
NOT long evolutionary time, very recent due to strong selective pressures
parental care
evolves when benefits outweigh the costs - increased offspring survival > time and energy, missed mating opportunities
somewhat rare
evolution of parental care - simple mode
caring phenotype - 50 offspring, 70% survival rate FAVORED
uncaring phenotype - 500 offspring, 5% survival rate
this model doesnt address variation of costs/benefits by sex
evolution of parental care: game theory
