BIO220H1 Lecture Notes - Lecture 3: Great Reed Warbler, Junglefowl, Barn Swallow

140 views6 pages
Verified Note
School
Department
Course
Professor

Document Summary

As we will see, male choice occurs in some species, and is simply the reverse. Visual stimulation: long tailed widowbird, satin bower bird, scorpionfly, barn swallow, cichlid fish, field cricket, jungle fowl. Acoustical stimulation: field cricket, woodhouse"s toad, great reed warbler, t ngara frog. How to define which trait? e. g. tail feather. Experiment (4 treatment groups: natural tail length (n) control, reduced tail length (r, elongated tail length (l, sham surgery (s) cut the tail and glue it back additional control. Mating success (best) l > n = s > r (worst) R, n, s, l have about the same female nests about the same selection by females. The answer was no: tail length seems only to influence female choice. Experiment 1: reduction of eye spot number (clipping tail feathers) Another experiment: female preference for complex in t ngara frog. Why are male elaborations common: females prefer them, therefore selection for elaboration.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions

Related Documents