ANT 154B Course notes- Lecture _9

Note here that we do female in the case of no

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Unformatted text preview: nterval experienced by the cancels out; see below). Note here that we do female; in the case of no infanticide or not assume a specific paternity estimation external mortality, IBIfull is equivalent to IBIactual. 2009 ANT 154B Lecture #9 course notes Alternative hypotheses: non adaptive Social pathology: crowding --> maladaptation. page 2 of 7 Sexual frustration / rage: anger --> kill. Biased observations Key predictor: ratio of lactation to gestation Key predictor: ratio of lactation to gestation Key predictor: ratio of lactation to gestation van Schaik 2000 van Schaik 20 Infanticide in humans: To reduce male investment in non-genetic offspring? Sex biased infanticide? “But do non-father human males kill infants to hasten ANT 154B Lecture #9 course notes page 3 of 7 2. Who kills (and who should kill) infants? Two types of infanticide Two types of infanticide Female philopatry Female transfer Attack Inf Inf Takeover Inf Inf Infanticide variants 1. male display of power: e.g. gorilla, Thomas’ langur Sexual selec...
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