• search
For Quick Alerts
For Daily Alerts

Strength and stealth, not good looks, rule in evolutionary mating game

By Super Admin

Washington, Dec 24 (ANI): One might consider physical appearances to be the top priority for getting a mate, but that's not true, according to a new study.

Certain species of South American fish (Poecilia parae) prefer brawn and stealth over colourful and refined, say scientists from Syracuse University 's College of Arts and Sciences.

"The findings may help us better understand how to protect biodiversity in larger ecosystems," said Luis Hurtado-Gonzales.

Poecilia parae males come in five, genetically determined colors-red, yellow, blue, parae (clear with a black stripe), and immaculata (drab gray that mimics the colour of immature females).

"If females prefer red and yellow males, then one would think that red and yellow would dominate and the other colours would phase out over time. However, red and yellow are the rarest colours found in the wild," Hurtado-Gonzales said.

In the current study, larger parae almost always defeated the smallest males, immaculatas, stopping them from approaching females.

However, Immaculatas compensate for their lack of physical prowess and attractiveness through a mating strategy that relies on stealth. Hurtado-Gonzales found that the immaculatas' drab colour provides camouflage that enables them to stealthy mate with females while the more colourful red males were wooing them.

They also have larger testes, which produce more sperm, providing a post-mating advantage in the race to fertilize female eggs.

Reds and yellows are also most likely to be hunted due to their striking colours, which are more visible to predators.

"It seems that within an evolutionary scale, the less attractive males persist in the population over their more attractive counterparts by evolving unique, but likely equally effective mating strategies," Hurtado-Gonzales said.

"Therefore, the maintenance of multiple colors may result from the interaction between predator control of attractive males (reds and yellows) and the ability of less attractive males to exploit other areas of sexual selection, including male dominance, sneak behavior, and sperm competition."

The study was published Dec. 23 in BMC Evolutionary Biology. (ANI)

For Daily Alerts
Get Instant News Updates
Notification Settings X
Time Settings
Clear Notification X
Do you want to clear all the notifications from your inbox?
Settings X
We use cookies to ensure that we give you the best experience on our website. This includes cookies from third party social media websites and ad networks. Such third party cookies may track your use on Oneindia sites for better rendering. Our partners use cookies to ensure we show you advertising that is relevant to you. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on Oneindia website. However, you can change your cookie settings at any time. Learn more