Sign In / Sign Out
- ASU Home
- My ASU
- Colleges and Schools
- Map and Locations
Pelage: the coat of a mammal. It can be made up of hair, fur or wool.
Phenotype: the appearance of an individual that results from the interaction between their genetic makeup and the environment. Phenotypic trait... more
Pollinate: moving pollen from the male to the female component of a flower as part of the fertilization process in plants. Birds and insects often move pollen from flower to flower when gathering nectar and they are therefore called pollinators... more
Stimulate: to increase the activity of a process like growing.
So, if you’re an animal out for achieving ‘top-dog’ status what should you do? Is redder better? Or why not use black to attract? Yes, animal species often differ drastically in the mating colors they use. This is largely because they have evolved to see the world differently and live under lighting conditions that gives them very different color-creating opportunities.
Many animals see poorly in color. This is the case with many mammals, whose night time habits let them see fine differences in the darkness, but does not allow them to see differences in color as well as you and I. This is why we rarely see brilliant colors in the mammal world, where variations on dark and light (blacks, browns, grays, and whites) rule. The exceptions of course are the primates, which can have brilliant orange pelage seen in tamarins, or vivid blue or red skin coloration of male mandrills and gelada monkeys.
We cannot leave out the vivid colors we display, both in personal appearance – from lipstick and nail polish to clothing and jewelry – and in our “extended phenotype”, such as driving a flashy car. Clearly these grab the eye and can send signs of seduction to those around!
Red is an especially popular and stimulating symbol of sexiness in the animal world. This is largely because red is a rare color in Earth’s habitats, typically standing out against brown soils, blue waters and sky, and green vegetation. This is possibly why it evolved commonly to signal food ripeness, the presence of danger, as well as sexual attractiveness in animals like primates and other daytime critters that use light and color throughout their lives.
In fact, some scientists argue that it is the history of eating red, ripe, nutrient rich foods that sets up the body’s sensory system in herbivors. Eating ripe fruit or vegetables can be simulated by the color red in a mate as well. This is not just limited to primates including ourselves, but to fruit-eaters like some fishes and birds as well.
Why else might we see so many flashy colors out there? In some animals, it appears that different colors send different messages – essentially as different languages of love. In several brightly colored red, orange, and yellow birds, for example, females show patterns of mate preference for the most colorful, healthy males of their species.
However, many of these same species also exhibit bold patterns of black or brown, which females often do not attend to when making their partner decisions.
Instead, the males of these species tend to be the ones that focus their attention on the dark patches of color, which serve as signals of aggressiveness and dominance in combat over resources and mates.
These examples show the two key sides to mating in nature – it’s not always just about you attracting the interest of the opposite sex.
It is also how well you can fend off rivals looking to do the same.
Dr. Biology. (2010, February 13). Are brighter colors better? . ASU - Ask A Biologist. Retrieved April 22, 2018 from https://askabiologist.asu.edu/are-brighter-colors-better
Dr. Biology. "Are brighter colors better? ". ASU - Ask A Biologist. 13 February, 2010. https://askabiologist.asu.edu/are-brighter-colors-better
Dr. Biology. "Are brighter colors better? ". ASU - Ask A Biologist. 13 Feb 2010. ASU - Ask A Biologist, Web. 22 Apr 2018. https://askabiologist.asu.edu/are-brighter-colors-better
Flowers sometimes use bright colors to attract pollinators. Photo by Jovo26.