Wild Cat Servals Research Paper

The second factor, allopatric speciation, occurred between the two rodents’ habitat. This is when a population is divided by a geographic barrier which prevents interbreeding between the two populations. These species are found on two different islands, so the water in between separates the two populations from interacting with one another. Due to this, both species could have developed changes in courtship rituals, developed new traits, and undergone changes to adapt to their environment.

Lake Malawi’s cichlid male population of fish are tested on their ability to build bowers to attract the female population. Altering this extended phenotype, or ability to build bowers resulted in no change of mating, but males that built successful bowers showed to

If the null hypothesis cannot be rejected, the chi-square test was unable to detect a statistically significant difference between observed and expected data. When applying this test to the stickleback experiment, the development of pelvic structures will be compared in order to accept or reject the null hypothesis. If it is rejected, the alternate hypothesis is correct- the environment did have an impact on the development of the pelvic spines, proving that natural selection can drive the evolution not just of simple traits like coat color or body size, but also of complex traits like the size and shapes of body structures and

The purpose of the research was to formulate a question and develop a hypothesis based on the variations observed between two populations of threespine stickleback, in order to gain a better understanding of natural selection

Nature has a unique way of working, then the humankind comes and ruins it all. The California Sea Lion is feeding off a species on the endangered species list, The Salmon. The Salmon attempts to travel upstream thru the Bonneville Dam where the Sea Lion awaits them. The Sea lion then eat them not allowing them to travel upstream becoming a greater problem for the already endangered species.

In Astoria, Oregon, invasive colonies of California Sea Lion have become overpopulated causing depleted populations of native fish, economical issues for the coastal city and they have caused immense damage to the docks. Due to the destructive nature of this invasive species on this ecosystem it becomes necessary to determine what is the most effective way of deterring California Sea Lions from colonizing on the Astoria docks and shoreline. If we relocate the California Sea Lions then, there will be a larger consistent decrease in the sea lion population than when scare tactics were previously used.

What is a manatee? According to www.savethemanatee.org/manfcts.htm they are “large, gray aquatic mammals with bodies that taper to a flat, paddle-shaped tail. They have two forelimbs, called flippers, with three to four nails on each flipper. Their head and face are wrinkled with whiskers on the snout.” Buckle in and i'll take you for a ride,as we travel with these amazing,adorable sea creatures.

Steller sea lion pups possess thick rough coats with a mostly dark appearance. After the first molt, their color lightens. The complexion of female and male Steller sea lions is a golden-brown to a reddish brown. They have a somewhat darker shade in their chest and abdomen. Steller sea lions also display sexual dimorphism which means that the males are remarkably larger than females. Similar to all pinnipeds, the Steller sea lions have whiskers to sense prey. They also molt every year which parallels to other pinnipeds, and they are mainly insulated by blubber. In addition, they have flippers that are used for locomotion. Their sensory organs are accommodated to operate both underwater and in the air, but because they are mammals they have to come up to the surface in order to breathe.

Steller sea lions (Eumetiopias jubatus) are the only member of Eumetiopias and are one of the biggest of the eared seals. Steller sea lions feed mainly on fish, and sometimes even various types of shellfish. Many Steller sea lions can be found along the coast of Western Alaska. Generally, Western Alaska has relatively warm summers, cold winters, and mild temperatures during the spring and fall, with the highest amounts of rainfall during the summertime. Steller sea lions have recently come under the scope of many researchers because of their sudden and significant decline of population in recent times. In some places such as the Aleutian Islands, which is an island chain found in the Western part of Alaska, the population of Steller sea lions

River Otters are a species found on 5 out of 7 continents in the world. They have short legs that allow them to swim, walk, groom, and manipulate their pray effectively. Generally, they are various shades of brown, but they have a darker dorsal, and a lighter ventral. Their head, eyes, ears, nose, and teeth are beneficial for them when hunting prey, and when being hunted. River Otters have unique characteristics, features, and lifestyles that allow them to be not only adorable, but important to many ecosystems.

In 1973, a Canada Lynx (Lynx Canadensis) was illegally trapped on Vail Ski Area. While mildly tragic that this individual Lynx had been killed, the real tragedy was not realized until months later. As time passed, no more Lynx sightings were recorded, nor were any trapped, and no carcasses were found. Months turned into years, and years turned into decades; finally the Lynx was regarded as regionally extinct in Colorado. The reason Lynx was not seen anymore in Colorado was as of result of an illegal trapper’s escapade in the mountains. This species ranged across the vast northern boreal forests from Alaska to eastern Canada, including the northernmost U.S. territories, expanding along the coniferous forests of the Rocky mountains as far

They based their study on the animals’ DNA and to provide evidence that sexual selection acts more strongly on females than on males. They collected Gulf pipefish from the Atlantic coast of Florida. To test monogamy, female pipefish were constrained to mate with a maximum of four males. As a result, much evidence was found to indicate that females experience stronger sexual selection than males in the population of Gulf pipefish. The average number of mates per female was about two while the number of mates per male was exactly one. This evidence is described as polyandry, which in this case produces stronger sexual selection for females. The variance of female mating success was seven times higher than male mating success. The only downfall for this experiment was that some male pipefish that had been collected may had recently given birth and may have been preparing their brood for a succeeding pregnancy. It was also found that mating females were larger in size and more embellished than average, concluding that males may prefer to mate with larger and more embellished females. In conclusion, the Gulf pipefish appears to have an extreme form of polyandry and it is supported that females have a far stringer sexual

Jackson 's article presents her beliefs and ideas in a clear and concise manner. She successfully lists multiple examples of biologists and philosophers who believe in the same concepts as her. "Latour argues when a researcher completely understands each loop, there will be further benefit through a production of knowledge" (Jackson discussing Latour). By giving examples of beliefs held by reputable scientists, Jackson builds her own credibility. She also contradicts Zuk clearly, using evidence of improvement within further research. Jackson ultimately uses little bias while presenting her conclusion which followed the main points of her argument. By stating her argument clearly, the article is easy to read and interpret. It explains many concepts about sexual selection and ornamental traits, and how they relate to her research. There are also many examples of data collected from researching cichlid fish-and the thought process behind choosing cichlids as her species of choice. By using data which can be easily interpreted and stating she chose the cichlid fish for their uncommon

In the case of ring species, natural selection and sexual selection each play a role in the divergence of ring species. Selective pressures allowed one phenotype to survive better than others in a certain area; sexual selection could cause divergence because organisms choose mates based on phenotypes. In the case of salamanders, natural selection affected divergence because organisms with certain coloration survived better in coastal or inland environments. In warblers, sexual selection and natural selection seem to play a part in the divergence of the ring species, as forest density and migration distance is variable and affects survival of the species. Molecular and morphological evidence can be used to support multiple species by showing

The Black Cat, written by Edgar Allen Poe, is a short story about a man, also the narrator, who starts out by living a “happy” life with his wife and favorite black cat, Plato. Although, he begins to be consumed by his drinking and becomes irritable. The black cat used to be by his side but now avoids him. This irritability leads him into becoming overly aggressive, which results in him hurting and murdering the cat. Then, a second cat appears who looks the same as Pluto but with a white spot on his chest. Eventually, the man starts to feel anger towards the cat and attempts to murder him with an axe, but his wife stops him. Unfortunately, his wife was hit in the head. The man then decides to bury his dead wife in his basement wall. He thinks he has got away with murder, but in the end, one learns that he had accidentally buried the cat alive with his wife. The cat reveals his hiding spot when he is caught by the police. Although it seems that the main character has committed these actions solely from alcoholism, it is obvious that there are signs he is also suffering from a mental illness.