BSC 385 Lecture Notes - Lecture 18: Maintenance Of An Organism, Mutation, Chromosome
22 Mar 2016
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Life history strategies (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Ex: female thrips egg mite mature at birth: mature before it hatches; mates w/ brother, but it dies after 4 days when its offspring hatch out. Ex: brown kiwi: 6 lbs, kiwi lays 1 lb egg, chick almost independent in a week, but it takes 2 months for two eggs, males watch them for 3 months. No organism lives forever (cid:1) (cid:1) (cid:1) (cid:1) How selection balances trade-offs in different environments leads to different life histories. Adaptive life history strategy evolves as the life history traits evolve in response to ecological conditions (cid:1) Life history traits do not evolve in isolation and are linked via energy trade-offs (cid:1) Investment in each life history trait has a benefit and a cost to the organism (cid:1) For each life stage, there is an optimal investment into a certain life history trait (cid:1)
