This provided the context for an extreme diversification of fish across the world. Within the evolution of the jaw, there are general patterns of predatory and defense mechanisms, as well as the construct of the armor of modern fish. With the evolution of jaws in fish, there was much less of a need for body armor for protection. Rather, the fish stepped out of the prey position and into a predatory one with the advantages of the jaws. Thus, they came to have less predators themselves, and so less of a need for protection armor. Many early fish, such as the Coccosteus, which was serves as an evolutionary bridge between the fully armored fish of prehistoric times to the modern sleek and armor less fish of today, (Benton & Harper 2009). Also, their jaws served as a protection measure in themselves, which also helped reduce the level of external armor for fish. Modern fish today have much less armor then their much earlier predecessors. Thus, the evolution of the jaw was responsible for a wide array of morphology developments; "Fish became more agile to be better predator, they were able to reduce their armor because they were les vulnerable, and their muscle density was able to decrease because they no longer led such a sluggish lifestyle," (Kagle 1997:1). The evolution of teeth within the jaw context depended greatly on the individual habitat which bred the world's fish. Each individual species followed different evolutionary paths based primarily on the food available within their habitats. For example, teleost fish tend...
Thus, another aspect of fish morphology was influenced by jaws. Some fish, like the lung fish, developed flat teeth to grind invertebrates which comprised their diet (Benton & Harper 2009). The evolution of other species such as the sharks produced animals that now have entirely cartilage frames other then the bone within their jaws. The cartilage allows for swifter movement, creating the possibility of the ultimate ocean predator. Therefore, the make up of the musculature of fish changed dramatically based on the evolution of the jaws. Fish became much faster and more agile, eventually becoming the swift creatures we know them as today. Fish have developed both predatory and defensive behaviors thanks to the evolution of his jaws, "jaws allowed defensive behaviors that these fished could use both intra- and inter-specifically and offered them greater opportunities to manipulate the environment in building nests or grasping mates," (Strickberger 2000:402). The evolution of the jaw was a critical step in the diversification of the larger body of fish species.
The function point-of-view fails to account for the presence of a femur in addition to processes from the pelvic bone. Altogether, these hind legs in this whale present for contemplation a most interesting instance of those significant parts in an animal -- rudimentary structures." [Struthers, p. 142-143] The dolphins breathe through their nose, but whales' nostrils drifted back farther and farther onto the top of the head in the fossils
Evolution of Two Species From a Common Ancestor Charles Darwin is known to have theorized on one of the most controversial, yet longest lasting theory explaining the origin of species. He suggested, through the tree of life hypothesis that all organism on earth might have originated from a common ancestor. There are similarities among the various species that made Darwin to have such a hypothesis and in the context of this
Abstract The relationship between a predator and a prey is quite essential to the dynamics in the wild. Various classic approaches have been employed in the attempt to predict and comprehend the nature of the consumptive interaction between a predator and a prey (Schmitz, 2017). Using this approach has not yielded any sufficient insight on the context and complexity that is characteristic of the relationship between predators and preys. Schmitz (2017)
Marine Bioluminescence Bioluminescence can be discovered across an extensive selection of some of the key categories of organisms. This includes classifications such as bacteria and protists and also squid as well as ?she's, with numerous phyla amid them. In many of these organisms, luminescence is made by these organisms themselves and never by bacterial symbionts. A few organisms in this category that are not considered to be self-illuminescents are (1) terrestrial
There are many other types of bass, but this fish has a remarkable color which distinguishes it from the other fish. When the fish is raised in commercial and sport fisheries, they have to get a supply of clean water. Like many other types of invertebrates, amphibians and fish, these fishes are also susceptible to pollutants in soil and chemicals in the system. This is a vulnerability of the
Eutheria, marsupalia, and monotremata are the three main "infraclasses" of the Mammaliam subclass Theria (Archibald). Of these three infraclasses, eutheria currently boasts the largest membership and monotremata the smallest. Eutherian mammals like bats are characterized by their production of placenta as well as live births. Marsupials like koalas are characterized by live births of immature young that continue their gestation in a pouch located externally on the mother's body; that
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