Natural Selection Lab

They also will have a better chance of being able to survive and reproduce because their food source (field rats) won’t be limited anymore. However, if the populations of field rat continue to increase, the rice plant population soon will decrease until there’s no more left to support the field rat. This will cause a dramatic drop in the field rat’s population because many will have to compete, adapt to another food source but there might be one, starve, and get eaten by the increased snake population. Sooner or later the whole food chain would crash and disappear unless they find another food source. When the population of field rats increases they can cause many things to happen.

• IF trees were removed from the habitat of the yellow warbler, what would most likely happen to the population of the the brown-headed cowbird? A. It would increase because of increased competition with other birds. B. It would increase because of a decreased number of insects C. It would decrease because of an increased seed supply D. It would decrease because of decreased nesting area • Seeds and insects are eaten by the brown-headed cowbird for food.

Meanwhile, their food is made up of a variety of seeds, sprouts, nuts, vegetables, commercial pellets and fruits. There are so many opinions on how to tell the sex these birds. When it comes to lutino cockatiels, like the ordinary grey cockatiels, juvenile will have barring on the underside portion of their tail. The male barring is lost with their first molt at about six months. On the other hand, the female barring is retained although it can still be difficult to determine mature hens from cocks since the barring can be somewhat faint.

Loggerhead turtles are species generalists. Loggerheads compete with other carnivorous predators whose diets overlaps with theirs. For example, juvenile loggerheads and Kemp’s ridleys in waters around Long Island have substantial diet overlap. Interspecific competition also occurs for nest sites for beaches shared with other sea turtles species; however, this problem was likely greater in the past before modern turtle population declines. The diet of loggerheads includes many species that are harvested by humans and consequently decreases in food resources can result in sublethal effects in the form of decreased growth rates and reproductive output (Bjorndal 2003).

Flatwood Salamanders do not adapt very well to their environment, which is why they are endangered. One adaptation that the salamander has made would be that it uses crayfish burrows to live in. They also have adapted to use camouflage by making themselves grey and black, so that they can hide in shadows, and dark places. They have also learned to breed in isolated ponds without and predatory fish, so that they and their babies do not get eaten. Another adaptation that they have made would be that their eggs only hatch when wetlands

If the amount of grass is reduced in the ecosystem, the entire food chain will be affected greatly. Due to a smaller food source, the primary consumers, the savanna hares, will also experience a decrease in population since the new amount of grass can not sustain the initial amount of savanna hares. Since the savanna hare population decreases, the food source for the secondary consumers, the caracals, will also experience a decrease in population. The caracals do feed off of other animals, but it is likely these animals are also affected by the decrease in grass. The total food supply for the caracals decreased, so the caracals will experience a decrease in population.

The reason for this is because the organisms with the least helpful phenotypes will be eaten by predators while the organisms with the better phenotypes will live on to breed, thus shifting the gene pool to go in a certain direction. I am able to move a total of 5 generations forward and each and every time I move the allele frequency will change to favor the superior phenotype, thus representing the

This means that instead of regional variations the genetic composition of these quail is extremely similar throughout its range with very little nucleotide diversity. This is believed to either be from the lack of overall genetic research of these quail throughout their extensive range, or that their dispersal is more complicated than commonly believed (15). The current assumption is that bobwhite quail are generally sedentary due to their poor flight capabilities and large size, with home ranges of around 16ha (4), but there have been documented dispersals of individuals over 100km (15). Another proposed explanation for this is the popularity of releasing captive birds. The number of bobwhite quail released each year in unknown because private landowners do not have to officially report them.

2010). If the temperature change is severe enough, the amount of population extirpations may lead to extinction of the entire species. The probability of this is uncertain, as there is a possibility that loggerhead turtles will select different nest sites as warming increases, or rapidly adapt to the changed climate (Deeming and Ferguson 1989). However, a shift in nest site preference is not the most likely option for loggerhead sea turtles, which show strong nest site fidelity. In addition, because nesting females generally return to their natal beaches and there is a low gene flow between nesting assemblages, these populations that are genetically distinct are at risk for extirpation (Ehrhart et al.

They eat caterpillars, including many pest species. They also eat other types of insects and some small fruits. They are considered a predator of the annoying Malacosoma disstria. In conclusion, the Baltimore Oriole are a very unique specie and is known to be one of the species that is most on the move during changes of seasons. The Baltimore Orioles are also important to the area they are in because they are considered to be very important predators on insects in the communities in which they live.

His remains then worked well to heal wounded limbs. However, this can only work if the person died unexpectedly. Roach is interested by the idea that economics plays a big role in why humans don’t usually eat each other. Roach says that humans are demanding and expensive since they end up needing more food to feed them than what one would gain by eating them.

“ You’ll need to feed it foods such as fruits, flower nectars, insects and even smaller lizards (gross! ).” First, finger monkeys need these types of food to maintain a healthy diet but these will cost 35-75 dollars each month and this involves other things as well. Some people may be sensitive and might not feed insects and small lizards to the finger monkey which would drop its health level. “Your local veterinarians will want nothing to do with monkeys when you need their help, you will have to travel miles to find one and you will not find them particularly helpful.” Secondly, this would add additional costs to find a vet who would want to care for your monkey because if the local vets don’t know or want to help your monkey, you would have to pay hundreds just to find a vet when it’s sick. Most people wouldn’t really want to pay this so they might just leave that monkey to die just because it’s expensive to take care of.