ANT 154B Course notes- Lecture _9

With a larger paternity disagreement zone one would

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Unformatted text preview: males would accept, without committing infanticide, less paternity in the current offspring than they would expect to get in the next offspring. With a larger paternity disagreement zone, one would expect to find more male–male mating competition as a wider range of paternity probabilities would Probability of having sired current offspring Valj ¼ pj  ð1 À mÞ Â k¼1 N h   i Y 1 À P Infanticidalj XP Successj k k (5) P(Infanticidalj ) is essentially the probability that inequality k (3a) will be true for another within-group male when the infant is born, although alternate infanticide models could be incorporated instead. In populations with male immigrants, P(Infanticidalj ) k would presumably be 1 for any immigrant. P(Successj ) is a funck tion of the number of males willing to defend the infant, the amount of time they spend in close proximity to the infant, the proportion of time that the infanticidal male is with the infant and the how successful defending males and females can be. As ANT 154B Lecture #9 course notes page 4 of 7 3. Counterstrategies Female counter-strategies: langurs • try to hide • try to counter-attack, prevent male take-over...
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This note was uploaded on 04/05/2011 for the course ANT 154bn taught by Professor Debello during the Winter '10 term at UC Davis.

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