Wednesday, October 27, 2010

Guppy Simulation

1. I think that guppies are so colorful to attract more mates, because without the color there wouldn't be enough mating so the population would go down.
2. Common name: Guppy or millions fish. Scientific name: Poecilia reticulate. Origin: Venezuela. Size: 1.4 inches.
3. Common name: Blue acara. Scientific name: Aequidens puncher. Origin: Trinidad and Latin America. Size: up to 7 inches.
4. It could affect the predators because they are sometimes dams that are upstream preventing the movement of predators to upper streams and confining them to the lower sections. A guppy population above these dams would most likely have little to no predators.
5. John Endler was a evolutionary biologist. He studied wild guppies in Trinidad.
6. The three areas we chose were,
A. the dam, brightly multicolored with large spots.
B. the Quare river, medium coloration on body and tail, with medium sized spots.
C. a shallow pool, drab coloration, very small spots concentrated near the tail.
7. I think that guppies are different in color depending on where they are in the pool because of predators. If there are more predators the guppies might be a little darker than the ones without many predators in their pools. Although some guppies mightn't care about the predators and have the brightest colors they can to attract a mate.

% of Brightest Guppies
(10 generations)

% of Bright Guppies
(10 generations)
% of Drab Guppies
(10 generations)
% of DrabbestGuppies
(10 generations)

Trial 1

Guppy: Even Mix
Predators
: 30 Rivulus

Trial 2

Guppy: Even Mix
Predators
: 30 Rivulus, 30 Acara

Trial 3

Guppy: Even Mix
Predators
: 30 Rivulus, 30 Acara, 30 Cichlid

Trial 4

Guppy: Mostly Bright
Predators
: 30 Rivulus

Trial 5

Guppy: Mostly Drab
Predators
: 30 Rivulus, 30 Acara, 30 Cichlid





8. If the guppies were to bright or to drab they would be eaten and those population would reach zero.
9. Yes and no. I thought that the brightest would die out and get eaten which they did. I also thought the drabbest wouldn't get eaten, but they did. Eventually the drab all were atenolol and there was only brightest left.
10. Male guppies live closely between their predators, and their females that they will mate with.
11. I think the colors all depend on the predators and what type of area they are in.
12. I think that if they were mostly drab with few predators they would start to thrive because of the lack of color and predators. Without to much color the few predators wouldn't really notice them very easily.
13. If there were brightly colored guppies with lots of predators the population would either be in an even balance or go down. It could be even because without he bright colors the guppies would attract more mates. It could go down because of the bright colors they could get eaten easier.

Wednesday, October 6, 2010

Biodiveristy and our planet

What are ways in which preserving biodiversity locally might have a global effect?

It could have a global effect because without it we would not have medicine that we have today that we get from many different animals around the world such as cone snails, from which we get many of our medicines from.

How do habitat destruction and loss of species effect more than just one area?

The loss would affect more than just one area because they are certain animals that arecalled keystone animals and they basically keepnthe area they arein alive because without them the animals and plants all around them wouldn't be able to survive. Without spcertain animals areas all around would start to fall apart and eventually die.

How do preserving biodiversity enhance the life of people?

If we can preserve the biodiversity of this planet it would enhance peoples lives because we will then be able to study more animals therefor gaining new and more knowledge. By studying different animals we may be able to find some materias that will help us with different things some basic some health related, the possibilities are endless. I think that preserving biodiversity is a key factor in the survival of human life in this planet.