EEMB 113 Lecture Notes - Lecture 17: Glacial Motion, Ice Pack, American Marten
7 Dec 2017
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Usually solitary& territorial to reduce feeding competition. Usually high reproductive skew (aka. few males get most mating) High variation in terms of how many babies produced per male. ** when told a mating type, be able to draw it out ** Mating isn"t always align with group size. A lot if energetic cost during pregnancy and lactation. Some male mate a lot, some not at all. Males have high variance for reproductive success. If female is in high social ran, likely to produce son. If female is in low social rank and unlikely to produce strong and big son to pass on the gene, most female choose to produce daughters. When male can"t defense access to female (can"t defense polygamy) When there will be no reproductive success if it isn"t monogamy. Parental care (not maternal investment) is limiting. Females get material benefits from mating (e. g. food) Females want to increase genetic diversity (often in colonial or eusocial animals)
