April of 2019 - By Koaw

In this video: Sexual selection is explained in an easy, casual way for the non-scientist. Have you ever wondered why a peacock is so colorful with an elaborate long tail?! Nature is fascinating!


- Quick comparison of evolution by sexual selection & natural selection.

- Intersexual and intrasexual selection.

- Examples of sexual selection in animals like female choice and male-to-male combat.

- Briefly explores the ‘why?’ of human males having large genitalia.

- Plus more!

And of course, because I adore fishes, that group receives the emphasis.

Enjoy! -K


Main References for General Information of Sexual Selection:

Breed, M. D., & Moore, J. (2012). ANIMAL BEHAVIOR. San Diego: Academic Press.

Campbell, N. A., Reece, J. B., Urry, L. A., Cain, M. L., Wasserman, S. A., Minorsky, P. V., & Jackson, R. B. (2008). BIOLOGY (8th ed.). San Francisco: Pearson Education, Inc.

Darwin, C. (n.d.). The Descent of Man and Selection in Relation to Sex (Vol. 1). 1871.

Helfman, G. S., Collette, B. B., Facey, D. E., & Bowen, B. W. (2009). The Diversity of Fishes: Biology, Evolution, and Ecology (2nd Edition ed.). Wiley-Blackwell.

Other General Sexual Selection References:

Beauty and the Beast: https://www.sciencedirect.com/science/article/pii/S1090513810000279

Sexual selection covered: https://www.sciencedirect.com/science/article/pii/S0960982210015198

Sexual selection roles evolving: https://www.sciencedirect.com/science/article/pii/S0960982216310089

Interesting Articles for Further Reading:

Lanternfishes: https://www.ncbi.nlm.nih.gov/pubmed/25766394

Seahorses ‘Pregnant but still Macho’: http://citeseerx.ist.psu.edu/viewdoc/download?doi=

Gambusia by Endler: http://gambusia.zo.ncsu.edu/readings/Endler%201992.pdf

Guppy by Endler and Houde: https://www.ncbi.nlm.nih.gov/pubmed/17747527

Blue shark teeth: http://www.ices.dk/sites/pub/CM%20Doccuments/2005/N/N2705.pdf

Ray dentition: https://www.hawaii.edu/fishlab/pubs/Kajiura%20&%20Tricas%201996.pdf

Bluehead wrasse: https://www.ncbi.nlm.nih.gov/pubmed/28569004

Human Sexual Selection Quick Refs:

Humans as models for sexual selection research: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5698637/

(Penis size in humans) Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15 521 men: https://www.ncbi.nlm.nih.gov/pubmed/25487360

Does Size Matter? Men’s and Women’s Views on Penis Size Across the Lifespan: https://psycnet.apa.org/record/2006-09081-001

The Mating Mind: https://ontherapyaspse.files.wordpress.com/2012/04/geoffrey-miller-the-mating-mind.pdf

Evolution of Female Orgasm: https://www.ncbi.nlm.nih.gov/pubmed/16790159