ADJUS-120 Lecture Notes - Lecture 13: Siblicide, Kin Selection, In Utero
23 Jun 2020
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Kin selection predicts conflict between relatives, just not as much as among non- relatives. Spadefoot tadpoles cannibalize mostly non-relatives (taste test) Sand tiger sharks eat each other in the womb. Largest category of kin homicides are against infants: Approximately 25% of the blood relative homicides are against infants. : the following should be associated with less investment in a child: Twins, born too soon, no male support, unwed mother, relative dies unexpectedly: infant quality . The mechanisms that affect infanticide won"t be the same ones that result in gang shootings or drunken men killing each other in bars. Most people who are killed are male. Most males who kill males do it over nothing . Males are defined as the morph with the smaller gamete. The gamete is the first investment made to your child. From that point, females usually invest more in the offspring females invest more : Sex differences are larger or smaller in different species:
