Custom Research paper: Evolutionary Paper
It is important to underline that the researchers view fishing and the existing fishing regulations as the major factor that contributes to the disappearance of the large fish and, what is more, they stand on the ground that it is the existing fishing regulations that provoked the acceleration of the evolutionary process leading to the disappearance of the large and survival of the smaller fish. For instance, the researchers argue that up to 50 percent of fish is caught in the process of fishing, while only 30 percent of small and less aggressive fish are susceptible to the risk being caught. Moreover, the regulations that allow people to catch only large fish stimulate, according to the researchers, the evolution of the fish living in the lake. The evolution of the fish basically leads to the survival of small fish, while large fish proves to be unable to adapt and, therefore survive in the lake.
Obviously, the researchers explain these changes by the process of evolution. For instance, they argue that the characteristics of the large fish increase the risk of the fish being caught. To put it more precisely, they underline the fact that the large fish is more aggressive. Due to the aggressiveness the large fish is able to survive since it has larger opportunities to find food and consume larger amount of nutritious products, while the small fish can consume smaller amount of food because it is less aggressive. As a result, the different in the nutrition directly affects the growth and the size of the fish. In such a way, due to the innate or acquired aggressiveness the large fish grows faster than smaller fish. custom research paper
At the same time, the aggressiveness of the large fish, being based on its boldness, has a negative side effect which increases the risk to the survival of the large fish dramatically. In fact, the aggressiveness and boldness of the large fish make it pay little attention to the possible danger the fish may be exposed to, while the higher need in the consumption of food and in a larger amount of food forces the large fish to look for food and, therefore, it is less cautious and, consequently, it may be caught by fishers. At any rate, this risk is higher for the large fish compared to the small fish. The small fish, in contrast, behaves in a different way. Since the small fish needs less amount of food it is more careful and cautious. On the one hand, it slows down the growth of the fish substantially, but, on the other hand, this characteristic proves to be very useful for the survival of the small fish because the risk of being caught is lower.
In such a way, on apply the evolution theory to the case of the fish in the lakes studied by P.A. Bori and J.R. Post, it is possible to estimate that the useful characteristics are transmitted from one generation to another and, in the process of the natural selection, the small fish, which is more adapted for the survival, is in an advantageous position compared to the large fish. As a result, the specialists warn that the large fish tend to disappear and be replaced by smaller fish.
However, it is necessary to critically evaluate such a conclusion. First of all, it should be said that, as a rule, the evolution is quite a slow process. To put it more precisely, the development of new characteristics occurs in the process of the development of species. As a generation develops one new characteristic, then this characteristic will be preserved and transmitted to the new generation, which in its turn will further improve it and develop new characteristics, and so forth. In such a way, the process of evolution implies that the changes should grew stronger from one generation to another that will definitely take a considerable period of time, even though the life of the fish is not as long as some other species. But the scientists indicate to the unexpectedly high speed of the evolution. This means that the changes occur very fast that is actually not typical for the process of evolution.
In such a situation, it is possible to argue that there are other factors that determine the current trends in the lakes leading to the decrease of the number of the large fish and the growth of the number of the small fish. In this respect, it is possible to argue, for instance, that the gradual disappearance of the large fish is the result of the human activity. In other words, fishing may provoke the decrease of the number of the large fish. In this respect, the existing regulations stimulate consistently the catching of the large fish, while the small fish, according to the existing norms and regulations, is not allowed to be caught. Consequently, it seems to be quite logical that it is human activity that provokes rapid and dramatic changes in the lakes.
However, it would be a mistake to totally deny the impact of the evolution. In stark contrast, the idea that the evolutionary changes are currently taking place in the lake is more likely to be correct, while human activities only accelerate this process and increases the speed of the disappearance of the large fish. In fact, if the principles of the evolution theory did not work, the large fish would continue to reproduce and the caught fish would simply be substituted by another large fish. However, the situation in the lakes is different that means that the evolution does take place and the small fish proves to be more survivable in the lakes.
Thus, taking into account all above mentioned, it is possible to conclude that the researches conducted by P.A. Bori and J.R. Post reveal the fact that the evolution theory does work, but nowadays, it is possible to speak about the impact of humans on their environment which leads to the disappearance of some species and survival of others. Basically, the study of the scientists shows that human activity affects and accelerates the evolutionary processes in the lakes.
Leave a Reply
You must be logged in to post a comment.