ANTH 311 Chapter Notes - Chapter 5: Ovulation, Operational Sex Ratio, Polygynandry
23 May 2014
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Box 5. 1 gibbon games and tarsier tactics. The first two sections of this chapter, sexual selection and sexual dimorphism, are covered in class as well. Here strier suggests that sexual dimorphism evolves by male competition or male coercion, whereas you will notice that in lectures, and later in the text, it is said to evolve by male competition or female choice. All three (male competition, male coercion, and female choice) play a role in the evolution of sexual dimorphism. In any case, notice the emphasis on the different reproductive strategies of males and females, and the importance of competition among males. Strier describes how life history characteristics, like the frequency with which females are fertile (see interbirth interval), affects how often a male is likely to encounter a reproductive opportunity. Be sure to know all terms in bold, such as operational sex ratio. Please note that there is a typo on page. 119 in the middle of the second paragraph.
