00:01
Hello everyone, in this question here, the discovery about the wild guppies is mentioned to us.
00:09
So, we have been asked that if being flashy and colorful attracts the predators, then why do you think the guppies are so colorful? so, evolutionary biologist here john endler, studying about the wild guppies, he was struck by the wide variation among the guppies from different streams.
00:39
So, even among guppies living in different part of the same stream, males from one pool spotted vivid blue and orange splotches along their side, while those further downstream carried the modest dots of color near the tails.
01:06
So, endler also observed differences in the distribution of guppy predators and the color and size of the gravel in different stream locations.
01:15
So, although conspicuous visual sexual signals such as the bright colors in males serve to attract the female, in numerous species, these female guppies prefer those that are colorful males for mating purpose.
01:34
The predatory fish also prefer colorful males, but for a less complementary purpose, a source of food that is easy to spot some portion of the streams where the guppies live have fewer predators than others.
01:51
And in these locations, the males are more colorful from the top frame, not and male guppies live in locations where there are more predators tend to be less colorful and the color here is in the bottom frame...