Thursday, October 28, 2010
Galapagos- Marine Iguanas
The marine iguanas are the only reptile that can swim. They are cold-blooded so they can only be under the water for 10 minutes or their muscles will become tense and freeze and they cannot swim. The iguana came to the Galapagos as a land iguana, but it had to adapt to the cold water in order to get the food it needs to survive. The iguana is not used to the salt water so when it sneezes, it expels the salt out and the salt lands on it's head.
Wednesday, October 27, 2010
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)
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% |
Wednesday, October 6, 2010
Biodiversity
What are ways in which preserving biodiversity locally might have a global effect?
Preserving biodiversity locally might have a global effect by saving species in the area. If we save the species in our local biodiversity, then there is more of a chance that the species will survive because we are protecting those animals. When we are protecting those species, they are not in any danger and if they are free of danger then that species will not go extinct.
How do habitat destruction and loss of species effect more than just one area?
Habitat destruction can effect more than one area by urbanization. If people create homes and buildings on the animals homes, then they have to find somewhere else to survive. Since they were kicked out of there homes, then they have to move into another animals homes. If there is not enough food for either species, then they start dying out. It started with one species losing their homes, then it lead to some of those and other species dying.
http://nativeplants.evergreen.ca/learn-more/02_sar_habitat.php
How does preserving biodiversity enhance the life of people?
Preserving biodiversity can enhance the life of people. When people kill a spider, they do not think of what the spider does for them. Spiders eat a lot of pesky bugs that could potentially end up eating our food or bugging us. If we did not have those spiders, then the bugs would be everywhere. Flies and gnats are what will be waking you up in the morning as they jump up and down on your face. We do not think about the long term effect before we kill something because at the time it is scary or annoying, but we need to start to think, what does this do for me?
Preserving biodiversity locally might have a global effect by saving species in the area. If we save the species in our local biodiversity, then there is more of a chance that the species will survive because we are protecting those animals. When we are protecting those species, they are not in any danger and if they are free of danger then that species will not go extinct.
How do habitat destruction and loss of species effect more than just one area?
Habitat destruction can effect more than one area by urbanization. If people create homes and buildings on the animals homes, then they have to find somewhere else to survive. Since they were kicked out of there homes, then they have to move into another animals homes. If there is not enough food for either species, then they start dying out. It started with one species losing their homes, then it lead to some of those and other species dying.
http://nativeplants.evergreen.ca/learn-more/02_sar_habitat.php
How does preserving biodiversity enhance the life of people?
Preserving biodiversity can enhance the life of people. When people kill a spider, they do not think of what the spider does for them. Spiders eat a lot of pesky bugs that could potentially end up eating our food or bugging us. If we did not have those spiders, then the bugs would be everywhere. Flies and gnats are what will be waking you up in the morning as they jump up and down on your face. We do not think about the long term effect before we kill something because at the time it is scary or annoying, but we need to start to think, what does this do for me?
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