Natural Selection & Sexual Selection: An Illustrated Introduction

Показать описание

How does evolution happen? Through a gradual process called selection. Individuals that are better equipped to survive and reproduce pass those traits to their offspring. These "selected" changes accumulate over thousands of years. We tend to think of natural selection—"survival of the fittest"—but sexual selection works the same way and can be just as strong in shaping how species look and act.

Filmed and photographed by Tim Laman.
#birdsofparadise #birdsofpradiseproject #birdofparadise

Рекомендации по теме

Комментарии

Hail praise to all the people, researchers and binocular-eyed zoologists and patrons that made this video possible.

JennaHasm

i love the background music with the combination of the behavior of the individual bird

peng

This is such a great video, the amores shield bird reminds me of my gym teacher ☺️☺️🥳🏋️‍♂️🍀

alexandrablml

My teacher given me the link to this video to watch and write kinda short essay based on it. Thank God this is not half an hour video and it explained clearly. What a great video! Now I need to start to type something for the essay.

hellochiizu

In case of the fancy males, a bit more elaborate explanation so as to "why" would be, that there may be two ways how the fancy traits are relevant for fitness. One option is, that if a male develops useless fancy traits and funny courtship behavior, and still has enough energy and enough capability to survive and escape from predators, that indirectly says, he´s got some very good genes other than those coding for the fancy traits. Another option is, that within the karyotyp, the fancy genes may bond with some high quality genes which are directly relevant for survival and fertility, and are carried onto the next generation together, so the fancy traits then serve as markers of the presence of those highly appreciated genes. Gene interactions that would only enable the development of fancy traits if high quality genes are present, are also possible. Whichever the case, not only males get selected. Females are also subjected to selection, regarding their mating choices. It is easy to see, how the males who can demonstrate their wholesome genetic qualities get preffered, and how females who prefer males who really have some hidden quality behind their fanciness, get also preferred.

blurryimage

Great video. Why isn't this video open to everybody? I went here through a link on facebook.

Ophaganestopolis

Beautiful video, thanks for sharing!
One note: sexual selection is practically part of signal selection. The main question in this case is why some treats are more attractive than others? The reason is that they are more attractive because they honestly present how good is the male comparing to other males, as explained in the handicap principle, or honest signaling (different name for the same principle).

EcoPlanetFilms

The problem is.. you didn't explain how akward, armor shield, and Long bill could exist on the first place?

tuntasjogja

That was SO great and I loved the animations!

OonaCanute

She totally missed the opportunity to say "turn the drab to the fab" at the end :(

justinlivingston

would you mind if i use parts of this video for non money educational purposes? in mexico. thanks, obiuosly i will mention you in th credits :) good day and what a brilliant channel you have.

Alexfitzpatrick

Thank you for making this, it is very helpful for my study

Grasse

Still helping me in Intro to Bio: Genetics and Evolutions course

vaibhavshokeen

but if you have a mutation but that mutation is not dominant, wouldnt it just die out anyway? Like if you had blue eyes and so the females chose you, but all the females had black eyes, wouldnt all the offspring have black eyes?

Entropicalli