Category: Sexual Selection

Cryptic Female Choice

March 4, 2024 By arne hendriks Off

One of the reasons why large mammals are shrinking is because smaller beings need less and are more resilient. In the light of threatening climate change the small have a greater chance at survival, which from an evolutionary perspective, makes smallness an attractive feature. People…

Social Canines

October 1, 2022 By arne hendriks Off

Basically it was women who made us human. A female desire for less macho behaviour in male great apes and consequently a greater capacity for collaboration enabled our evolution, and the directional female choice for men with smaller canine teeth led the way. Canine tooth…

Amplexus Tantra

October 27, 2018 By arne hendriks Off

It may seem farfetched and even a little awkward to discuss a frog’s preferred sexual position as part of a strategy to shrink. However, to change humanity’s irrational desire for bigger towards a much wiser desire for smaller we must invest as much in alternative…

Fisherian Runaway

June 5, 2018 By arne hendriks Off

Fisherian runaway is a mechanism proposed by the mathematical and evolutionary biologist Ronald Fisher, to account for the evolution of exaggerated male ornamentation by persistent, directional female choice. When females are attracted to a certain trait within males, this trait over time gets over-emphasised because males with the trait…

Side-tunneling

January 28, 2018 By arne hendriks Off

The small have strategies to ensure that their genetic knowledge on how to be small is preserved. Since smaller size within a species often means the individual lacks the physical strength to power their way into the female’s heart they need to outsmart the strong.…

A Frog’s Patience

November 1, 2017 By arne hendriks Off

Bigger males, both human and animal, are generally more successful in attracting and being selected by females. But not in all species. The Incredible Shrinking Man seeks inspiration from those few species where females favour the small, like Agalychnis callidryas, the Red-eyed tree frog. In…

Sneaky Copulation

February 17, 2016 By arne hendriks 0

In terms of reproduction, size matters. In most species larger dominant males are preferred by the females, and perform better in male to male competition. And as a result they get to spread their ‘king-size’ genes around. But not always. Sometimes smaller is preferred as…