Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Bailey and Danziger's War on Poverty book reviewed in NY Review of Books

Bloomberg cites MTF data in story on CDC's anti-smoking ads for e-cigarettes

Bound says notion that foreign college students are displacing U.S. students "isn't right"

Highlights

U-M ranked #1 in Sociology of Population by USN&WR's "Best Graduate Schools"

PAA 2015 Annual Meeting: Preliminary program and list of UM participants

ISR addition wins LEED Gold Certification

PSC Fall 2014 Newsletter now available

Next Brown Bag

Mon, April 6
Jinkook Lee, Wellbeing of the Elderly in East Asia

Sexual dimorphism and sexual selection: A unified economic analysis

Publication Abstract

Chu, C. Y. Cyrus, and Ron Lee. 2012. "Sexual dimorphism and sexual selection: A unified economic analysis." Theoretical Population Biology, 82(4): 355363.

We develop a life history model with two sexes, and study the optimal energy allocation strategy of males and females. We join Darwin and others in suggesting that the origin of sexual dimorphism and sexual selection is the difference between male and female reproduction costs. Due to this assumed cost difference, the resulting Bellman equations of gene dynamics in our two-sex life history model imply a large "energy surplus" on the part of males. This allows the male form to devote energy to the development of some costly male traits that help the males to compete for access to females. These costly male traits are sexually dimorphic. Using this life history model, we are able to explain important features of sexual dimorphism, as well as why males often transfer less to their offspring than do females, and why only females have a menopause. (C) 2012 Elsevier Inc. All rights reserved.

DOI:10.1016/j.tpb.2012.06.002 (Full Text)

Browse | Search : All Pubs | Next