Guppy simulation

1. They are flashy colored because the more colorful they are, the more they attract the females to reproduce.

2. The common name is guppy or millions fish. The scientific name is Poecilia reticulata. The average size is 3.5cm.

3. The common name is pike cichild. The scientific name is crenichila alta. The origin is Trinidad and Latin America.

4. Dams are a good way to keep out big predators because they are too big to fit through holes that guppies can. Also a shallow pool keeps out big predators because they cannot stay underwater because of their size.

5. John Endler was an evolutionary biologist that studied guppies in Trinidad.

6.Pool 1: Brightly multi-colored large spots.
Pool 2: Medium coloration on body and tail with medium sized spots.
Pool 3: Drab coloration and very small spots concentrated near tail.

7. The fish have least coloration seem to live with the most predators, so if you had a lot of coloration with a lot of predators, the fish would get eaten.

8. If the fish are brighter, they're much more likely to be targeted by predators.

9. Yes, in areas with less predators the brightest guppies take over the population. In areas with more predators, only the drabber fish survive. This goes with the hypothesis.

10. Two factors influence the characteristics of a guppy population: the predators, and the mates (natural and sexual selection). Saying that male guppies are caught in the crossfire more or less means this; they need to find a safe median between attracting mates and avoiding predators.

11. Guppies have different coloration in different areas of the stream based on predator population. They adapt to be drabber/brighter when predators are more/less.

12. The guppies would not attract mates because they have so little coloration, but would not be preyed upon. If there are brighter guppies in the area, they would win out over time.

13. The brighter guppies would be preyed upon and would die off due to the high amount of predators, because their coloration would be more visible to predators.
 


         
Trial 6        
Guppy: Mostly Bright
Predators: 30 Rivulus,             0%                           0%                         0%                      100%
30 Acara, 30 Cichlid              (20 generations)    (20 generations)  (20 generations)  (20 generations)

	% 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	70%	21%	6%	2%
Trial 2 Guppy: Even Mix Predators: 30 Rivulus, 30 Acara	14%	86%	0%	0%
Trial 3 Guppy: Even Mix Predators: 30 Rivulus, 30 Acara, 30 Cichlid	0%	3%	2%	95%
Trial 4 Guppy: Mostly Bright Predators: 30 Rivulus	88%	9%	1%	3%
Trial 5 Guppy: Mostly Drab Predators: 30 Rivulus, 30 Acara, 30 Cichlid	0%	2%	6%	93%