BIO152H5 Lecture Notes - Lecture 18: Kiwi, Sexual Selection, Parental Investment
Document Summary
Females chose males with preferred traits: asymmetry of sex. Females usually invest more in the offspring than males do. Typically produce relatively fewer offspring than males. Fitness is limited primarily by the ability to gain resources necessary. Kiwi bird is like 6 pounds but their eggs are 1 pound. That requires a lot of energy: examples of female choice. Longer tails were showed as a preference when compared to short tails an natural tails: benefits of female choice (direct and indirect) Male traits is indicator of parental investment. Good territory: more chances if surviving and higher fitness due to resources. Females prefer males with good genes o that their offsprins can inherit them: selection for male trails are indicators of parental investment. Lack of parasites: male choice copying by female guppies. Mate copying masks genetic female preference below a certain threshold.
