Vertebrate

Population and community-level impacts of feral cats on native fauna have been little studied, but evidence from several studies indicates that direct predation is the most important process involved (reference). Nevertheless, a study was conducted on the stomach contents of 390 feral felines in central Australia, between 1990 and 1994, in the Northern Territory. Felines victualed on a variety of invertebrates, reptiles, birds and mammals, including animals up to their own body mass in size.…

Sound is a means of communication by animals. Many fishes are capable of producing sounds with the help of specialized structures. Fish have evolved the largest diversity of sound-producing mechanisms among vertebrates, and sounds are emitted in numerous contexts: e.g. disturbance situations, during courtship, competitive feeding and territorial encounters. Sounds are also produced unintentionally including those made as a by-product of feeding or swimming. The majority of sounds produced by…

I believe the decrease of wild hogs is necessary for three reasons. The first reason being they carry, and spread disease. The second reason is because they are overpopulated and breed up to three times a year having 12-15 offspring each time. The final reason is they destroy our crops, fields, and the equipment used to maintain them. When hogs are able to roam freely they can spread diseases. Although these infectious diseases may not be harmful to people, they are very dangerous for pets…

The question of animal intelligence has been hotly debated among scientists in the past. While we would like to believe that we are the only intelligent species on Earth, there is ample evidence that vertebrate animals often behave in ways that could easily be considered "intelligent". Read the following link entitled "Bird Brains" and comment on the idea of animal intelligence. What do you think of the evidence presented in the article? Is it enough to convince you? What kinds of behavior could…

of fishlike animals to invest brief times of energy out of water, rummaging for plant nourishment ashore. This prompted the advancement of the principal creatures of land and water around 360 million years prior. (Creatures of land and water are vertebrates that live some portion of their lives ashore and some portion of their lives in water.)The Mississippian and Pennsylvanian times of Paleozoic time have been known as the Coal Ages, or the Carboniferous periods. Amid these periods, the Earth's…

both men and women. Intake of boron helps the body absorb and utilize other minerals by interacting with steroid hormones. Boron is important for bone growth and maintenance as it reduces the urinary excretion of magnesium and calcium. The boron vertebrate transporter helps these substances deposit within the bones rather than being excreted as waste. Higher levels of magnesium and calcium help prevent osteogenesis, or brittle bones (that can break easily,) which is especially important in…

described by Walter Cannon in the 1920s as a theory that animals react to threats when the autonomic nervous system reacts. His theory was later recognized as the first stage of a general adaptation syndrome that regulates stress responses among vertebrates and other organisms. Our autonomic nervous system consists of two branches: the parasympathetic and the sympathetic systems. The sympathetic system’s general action is to control the body’s response during perceived threat. Whereas, the…

In the museum, I have selected three part in the Lab. First of all, there is Tarantula Spider. Tarantulas diet including grasshoppers, beetles, and other spiders. Vertebrates, such as rats, toads, snakes, frogs and lizards may fall into a tarantula depends on the species. Arboreal species feed on insects, moths and frogs. Although they have silk manufacturing capability, most tarantulas don't knit air network to capture prey. Instead, they use ambush strategies or find food at night. According…

Shark teeth are one of the most commonly collected vertebrate fossils. Since sharks have been around so long, it is not surprising that their teeth have produced many fossils. Sharks have the ability to shed and grow back teeth because unlike other vertebrates, their teeth are not fused to their jaws. When sharks die there is nothing to hold the teeth in place, which is why the teeth are scattered and…

function of the cell “where the movement of the calcium ion, Ca+2, into and out of the cytoplasm operates as a signal for many cellular processes”. (The Alkaline Earths as Metals, Chapter1, p14) Finally, Calcium is the major element present in all vertebrates, particularly in bones and teeth. In conclusion, calcium is an essential and require element for nature to work…