Biology 2483A Chapter Notes - Chapter 6: Trophy Hunting, Bighorn Sheep, Allele Frequency

• School: Western University
• Department: Biology
• Course: Biology 2483A
• Professor: Hugh Henry

Document Summary

Biology 2483 lecture 5 (evolution and ecology: trophy hunting and inadvertent evolution: a case study, the males battle to get access to females a. i. The larger males have a greater chance: bighorn sheep populations have been reduced by 90% by hunting, habitat loss, and introduction of cattle, hunting is now restricted c. i. Permits for a large trophy ram cost over ,000 c. ii. This process help restoring the species: trophy hunting removes the largest and strongest males the ones that would sire many healthy offspring d. i. In the case artificial selecting against the big males, small males reproducing in a much higher proportion e. In one population, 10% of males were removed by hunting each year, the average size of males and their horns decreased over 30 years of study e. i. The below example is where they track the size of the male over time in term of weights, as well as the horn lengths e. i. 1.