PSYC 3100 Lecture Notes - Lecture 20: Parental Investment, Bride Price, Ovulation

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Pat Barclay

Document Summary

Maximizing tness is maximizing grandoffspring (etc)- key is not just producing children, but producing successful children who can themselves produce offspring themselves. Quantity/quality tradeoffs recall the de nition of parental investment: investment in one child reduces ability to invest in others more children: decreased survival/reproductive prospects for each (remember. 30%-50% child mortality- and many other fail to mate)-e - many children are likely to die, and many fail to mate if a child barely makes it puberty and is starving, lower likely to mat. Somatic effort- how much you are investing in your own body. Reproductive effort- mating effort and parental investment. The more children yo have, the more thin leaf your parental investment is provided to them - too many mouths to feed- more likely to starve- dispersion of resources more children = decreased survival and reproductive prospects. What is the optimal brood size? number of children for this species- clutch size multiplied by chance of them surviving.