Write An Essay On Crocodilians

In this experiment, our objectives were to observe and analyze the metabolic rate of Orconectes rusticus crayfish by measuring the rate at which dissolved oxygen in the water was consumed. Furthermore, we looked to explore the relationship that body size had on the metabolic rate of the organism. We hypothesized that the metabolism of the crayfish would increase as the body length of the organism increased.

A thick coating of mud and/or algae frequently obscures the actual color of an individual’s carapace. Present at hatching, serrated rear marginal scutes remain dentate throughout the turtle’s life.

The Leatherback sea turtle is one of seven different turtle spices in the world. It inhabits three major tropical bodies of water: Pacific, Atlantic, and the Indian Oceans [2]. According to IUCN Red List of Threatened Species [1] the leatherback sea turtle (Demochelys coriacea) is at a vulnerable state. With its geographically widespread distribution, the species is doing well in population size. A unique aspect about this turtle is that its diet consists only of soft-bodied animals, such as jellyfish. [16]. Hence, the research question being discusses in this paper being: How and why does the leatherback sea turtle eat only jellyfish? And what dangers do they face with migration? With research from many scientific journals, the following thesis was concluded. Leatherback sea turtles survive and feed exclusively on jellyfish because of their adapted anatomy and for migratory purpose such as foraging and mating while facing dangers of lengthy migrations due to humans.

The Effect of Temperature on Animal Respiration Renee King 001420538 TA: Oliver Biology 3U03 L01 This lab examined the effect of temperature on the rate of oxygen consumption by measuring VO2. Effects were observed in goldfish, frogs, and mice, which each use different mechanisms for thermoregulation. The average rate of oxygen consumption by goldfish increased from an average of 0.175 mL g-1 h-1 at 5֯ C to 0.288 mL g-1 h-1 at 25 ֯C which was a 64% increase. The average rate of oxygen consumption by the frog was higher at 5֯ C than at 25 ֯C. At both temperatures, the rate of oxygen consumption increased over time.

The saltwater crocodile is huge even exceeding the Komodo Dragon size but to be exact the females attain lengths of 3 metres (10 ft) and males 3-6m (10-19.5 ft) but there have been are specimens of 10.6m (27 ft). With there big appearance the Crocodylus Porosus has large heads, a pair of ridges run from the eyes to the centre of the snout, eyes ears and nostrils located on the top of the head allowing it to see hear and smell normally.

The use of Antibiotics in animal feed has been around for approximately 50 years, not only as a growth-promoting agent, but also as an anti-microbial agent. Its use in animals is leading to an increased resistance to Antibiotics in humans. As the human population grows, from city to city, there will be a bigger risk that dangerous bacteria and diseases will develop.

Living crocodilians include the 24 species of alligators, caimans, crocodiles and gharials. These large semi-aquatic ambush predators are ubiquitous in freshwater ecosystems throughout the world's tropics and warm temperate regions. Extant crocodilian diversity is low, but the group has a rich fossil record in every continental deposit. Most populations suffered from over-hunting and habitat loss during the twentieth century and even though some species remain critically endangered others are real success stories in conservation biology and have become important economic

Most countries in the American crocodile's range have passed protection laws, but unfortunately, few governments provide adequate enforcementrocodiles and alligators - two creatures that share many similarities. But what are the real differences between them? This is probably the most frequently asked question when it comes to crocodilians, and while the answer may appear straightforward the real truths lie in the details.ust with the help of their powerful tail.

These Saharan crocs persist under rocks, in caves, and in burrows in the Saharan heat. Alligators have developed a behavior uniquely suited to dry seasons with smaller rivers, in which they will dig holes in their riverbeds to lock in enough moisture to ensure survival for the few week to a month period in which the dry season occurs. Saharan-adapted Nile Crocodiles can stay in these shaded and protected hollows for the months at a time, only leaving their seclusion to take a morsel such as a weasel or mongoose. The time will be spent in wait, moving as little as possible to protect the precious moisture stored in their bodies. When prey is spotted, often similar tactics will be taken as if the croc were still in a lake. Burying itself in the sand, the croc waits to strike and take the food back to a shaded home. Alligators follow a similar process, but even with a dried riverbed, that home dug deep and whatever animals are tempted by the hydration still remain. Furthermore, if that water were to dry up, the alligator would have a paddle, but no creek on which to use it. Alligators, just as crocodiles, only have an internal defense against cold climates: brumation, or entering a torpor not as deep as hibernation. No comparable defense exists for excessive heat, and again the Nile Crocodile does not evolve but adapts by hiding from the intenser rays of the sun in the Sahara’s

What is a crocodilian? Crocodilians are a group of reptiles from the order Crocodilia, which include alligators, crocodiles, gharials, and caimans. Did you know that the strongest bite force comes from a crocodilian? It is true. The strongest bite force comes from one of the four reptiles from the order Crocodilia. Can you guess which one? If you guessed crocodile, you are correct. To be specific, the saltwater crocodile has strongest bite force.

The results of our study were also consistent with the results from a study by Rastrick and Whiteley (2013) on 4 different species of Gammarus, including the G. setosus. Rastrick and Whiteley (2013) found that G. setosus were more comfortable in areas under the influence of colder thermal gradients because at lower temperatures, they acquire an elevated rate of protein synthesis, and are able to maintain constant osmotic pressure. As a result, Rastrick and Whiteley (2013) also determined that there was less movement at the colder temperature. In terms of speed, we found that G. setosus had a lower average speed in the 4⁰C water temperature. This is in agreement with the findings of Rastrick and

The reader is probably thinking about why I would chose this small carnivore when I could have picked a Brontosaurus, Tyrannosaurus, Stegosaurus, or Triceratops. It is not because I do not find those animals to be boring, it is because Microratpor is the very essence of what a dinosaur is. There was once a dark age where dinosaurs were seen as overgrown lizard-like reptiles that had small brains and an exothermic metabolism. However, it is because of the discovery of dinosaurs like Microraptor that has changed our outlook on what these animals were like as living creatures. They were fast, agile, and endothermic creatures that would lay the foundation for one of the most numerous groups of modern vertebrates, birds. Being a

When antibiotics were created, antibiotics were designed for the human use of eradicating disease. In recent years, farmers have been pumping their livestock full of antibiotics ever since it was discovered that certain combinations of antibiotics in healthy animals can increase their body fat percentage by 3 percent. The weight gain of 3 percent was revolutionary for farmers, since each animal is worth pennies by the pound (Meat Safe 2014). Now, the cattle and poultry industry is responsible for 80 percent of all antibiotics sold. In 2011, 80 percent equivalated to over 30 million pounds of antibiotics being pumped into the American meat supply (Kessler 2013). But why is this a concern for humans? The feeding of antibiotics to the food supply is detrimental to the effectiveness of antibiotics in humans. The overuse of antibiotics in animals is contributing to the growing problem of antibiotic resistance, which can lead to a more difficult time treating common diseases and death.

Squamata is the largest and most recent order of reptiles, including the species lizards, snakes, and worm lizards. The order is about one-hundred and sixty million years old and has approiemently 7,900 species in this domain. Species in this order are distinguished by their scales, which have a horny shape. Also species in this domain have a movable quadrate bone, making it possible for them to move their upper jaw. This is very observable in snakes; especially the anaconda which can eat an animal five to six times its size, such as deer and hippopotamuses. Besides the larger snakes in the Squamata order all other eat small to medium sized invertebrates. Out of all the orders the Squamata order has the most variance in size-range. On the small side the Jaragua Sphaero is 0.63 inches in length and is one of the world’s two smallest know

Would you allow a crocodile to attack you? If a crocodile is classified as a killer world-wide, then people should, without a doubt, have a legal right to harm the reptile. On numerous occasions, crocodiles are underestimated, because of how slowly they move when walking, eating, swimming etc. Likewise, the proverb goes “Don’t judge the book by its cover”. Crocodiles are known for killing any and every thing, especially when they are hungry. At least 500,000 persons are killed every 2-3 years, because of being attacked by a crocodile. I am in firm agreement with the statement. Reason being, though indigenous, a crocodile can be harmful, and will attack a person unknowingly, therefore crocodiles should be killed in acts of defence.