Disappearing Frogs

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• The Frog Life Cycle Process Essay

  ...The Frog Life Cycle In Biology, we know the term metamorphosis which is the transformation process of animal’s body structure from the immature one to the adult form. This transformation process is done through cell growth and differentiation. This process usually happens in some insect’s life, such as butterfly. But there’s also amphibian, like frogs, which is also do metamorphosis in their life cycle. Frogs have some phases in their life cycle, part of the metamorphosis, which is interesting to be learned. Frog’s life cycle begins from eggs. The adult frog may lay a mass of eggs. Frog will lay their eggs in static water to keep it from destruction. Not all of the eggs would turn into a frog later; there are some chances the eggs died. According to allaboutfrogs.com, the dead eggs tend to turn white or opaque. After 10 days, the eggs will hatch. Then those eggs enter the next phase. On the next phase, the embryo in the egg will leaves its jelly shell and becomes tadpole. These tadpoles have a long tail and their body is covered with external gills. In Adipedia.com, it was said that after a few days, skin will grow over the external gills and they will be changed with gill sac to absorb oxygen. They have tiny teeth and eat algae. Based on Wikipedia, for digesting the food, they use a relatively long, spiral-shaped gut. They will grow and have some transformation later. After 6...

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• Conservation of the Table Mountain Ghost Frog Essay

  ...A researched examination into the critically endangered frog species, Heleophryne rosei, with specific regard to its habitat, ecology and population. In addition to the various threats this species faces and conservation actions implemented to safe–guard its remaining numbers. L.S. Maistry - 212510816 Department of Life Sciences , University of KwaZulu – Natal, Private Bag X 01, Scottsville, 3209, Pietermaritzburg, South Africa . Submitted: 19 August 2013 The focus of this assignment is a researched exploration into the existence of the critically endangered frog species, Heleophryne rosei, or as it is commonly referred to, the Table Mountain ghost frog (Minter et al 2004). Particular attention shall be paid to describing its habitat, ecology and population. Furthermore, the threats encountered by the species in addition to conservation methods implemented to safeguard its already severely declining numbers and the various implicit consequences of this , will be discussed. The class Amphibia is an extremely fascinating and diverse one and has over the centuries astounded and intrigued not only the scientific community but society at large (Attenborough 2008). Amphibians are ectothermic, biphasic, tetrapods (Auerbach 1987). Their integral role in the ecosystem and various food webs is most certainly undeniable (Campbell et al 2011). From a taxonomic standpoint, frogs are a varied group of typically short,...

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• The Anatomical and Physical Features of Frogs Research Paper

  ...The Anatomical and Physical Features of Frogs Abstract: People have always wondered how frogs have the capability to live in both wet and dry environments. So why not dissect a frog to find out how. Frogs have both physical features like their skin that allows them to breath in water. They also have anatomical features like humans that allow them breath air just like us. Introduction As many people have learned throughout elementary and middle school amphibians are animals that have the physical capabilities to live in water and on land. Sarah Wilkes states that the amphibian derived from the Greek word amphibious, meaning “double life” (4). There are several types of amphibians which include frogs, toads, newts, salamanders, and caecilians. They are classified as vertebrates. They have a vertebral column, which is a series of small bones that run down their back to provide support. The same column can be found in mammals, birds and reptiles (Wilkes 4). Amphibians breathe through their moist skin as well as their lungs. They have long sticky tongues and they have ears but are internal unlike mammals. They smell using the roof of their mouth using a nerve called the Jacobson’s organ. They mostly have limbs similar to mammals but with different features. They have four digits on their front limbs and five digits on their hind limbs (Wilkes 4). Amphibians go through a series of physical...

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• Life Cycle Of A Frog Essay

  ...Tikhomirova 1 Tatiana Tikhomirova Marcio Pre-Degree I 3 March 2014 Life Cycle of a Frog Despite the fact that the frog is a small animal, in terms of symbolism, it is of some interest. In ancient Egypt, because of its fertility, as well as a striking transformation from egg to a tadpole, and then in the quadruped animal, the frog was considered strange creature and was a symbol of emerging and ever-renewing life. Often, the ancient gods of care arising out of the mire, depicted with frog heads. Goddess of child-birth, who was a good helper of the popular religion, looked like a frog. (“Heqet”) This essay will describe frog’s transformation from egg to adult frog by three steps. First of all, frogs lay eggs. When multiple eggs stick together, they are collectively known as frogspawn. After fertilization, the innermost portion liquefies to allow free movement of the developing embryo. Most eggs are black or dark brown, and it has the advantage of absorbing heat from the sun, which holds the insulating capsule. Frogs lay a lot of eggs because there are many dangers between fertilization and grown frog. Those eggs that die turn white. Life starts right as the central yolk splits in two. It then divides into four, then eight, etc. Soon, the embryo starts to look more and more like a tadpole, getting longer and moving in egg. Usually, about 6-21 days...

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• Essay on The Frog in the Hole Poem

  ...The Frog in the Hole — Devotional By Staff Very recently, Nathan (my 12 year old son) and I were in our back yard throwing Frisbee. He has gotten into Frisbee golf (disc golf) and was showing me some of the tosses he had learned. We were having a blast. During this fun time, Nathan walked over to a small sink-hole in the ground he had discovered a while back. The hole is about 5 inches in diameter and about 18 inches deep. Peering into the bottom of the hole, Nathan exclaimed, "The frog is still living in here!" He went on to share that he had seen the frog in the hole about a week earlier. He had concluded that this is where the frog had chosen to live. That’s when it happened. I felt a wash go over me from the tip of my head to the bottom of my feet. I was smitten by a deep compassion. I knew the frog had not chosen to live in that hole. I remembered as a child the times we had dug holes to catch an old toad frog. I walked over to the hole and peered down in there for my own look. Sure enough, there he sat–an old brown toad. I explained to Nathan that the frog was in the hole and couldn’t get out. I shared that the ole toad may have deliberately gone in the hole after something he wanted, but once there, he discovered he couldn’t get out. The conversation continued: "We’ve got to get him out!" I said. Nathan replied, "You get him out; I’m not touching him." "I will...

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• Life Cycle of a Frog Essay

  ...The Life Cycle of a Frog Diagram of the Frog Life Cycle | Mom and Dad Frog Decide to Have Baby FrogsThe life cycle of a frog starts when mom and dad frog fall in love and decide to have baby frogs. Okay, nobody really knows if frogs fall in love, but it’s okay to think that they do. Mom and dad frog will mate, either in the water or in a tree, depending on what kind of frogs they are. You know this is happening when you see dad frog hugging mom frog from behind her. The dad frog will lay on top of mom frog and wrap his front legs around her body and he will hug her for several days. This hug is called amplexus. | Spawning While mom and dad frog are hugging, mom frog will lay a bunch of eggs for the dad frog to fertilize. Unlike human eggs, frog eggs are fertilized by dad frog when they are outside of the mom frog’s body. This is called spawning and is the very beginning of the frog life cycle. After the mom and dad frog have finished spawning, dad frog leaves, and sometimes the mom frog does, too. Sometimes mom frog will stick around, though, and wait for the baby frogs to hatch so that she can care for them, but this only happens with...

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• Essay about The Ghost Frog

  ... The Lost World (The Ghost Frog) Brandon L Smith Southern New Hampshire University The Heleophryne amphibian, is also known as the “Hewitt ghost frogs” in the family of Heleophrynidae. It’s composed of only 6 species, they are describe as the most basic and old parts of the “Neobatrachia”, which is from the family of toads and frogs of today. A different part is the “Anura” these frogs and toads contain the more newly evolved frogs and toads family genetics. Hewitt’s ghost frogs are limited to four everlasting rivers, which have headstreams in the Elandsberg River down in the Eastern Cape Province, South Africa. These rivers streams also include the Martin’s River, the Klein River, the Diepkloof River, and the Geelhoutboom River, and these species are at a height of 400 to 550 meters above the sea levels. This has a decrease in the bulk species of frog that has a body that is flat that allows the Hewitt’s ghost frog to shield its self in small spaces that are confined throughout the day when it is sluggish. The males are about 47 mm in length and are a little bit smaller than the females, which can get up to 50 mm. The Hewitt’s ghost frog has big eyes with pupils that are vertical, the tips of the toes and fingers are wide and flat like spatulas, and there legs are long and their front feet lack webbing to help them stick when...

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• Frog dissection Essay

  ...Background: As members of the class Amphibia, frogs may live some of their adult lives on land, but they must return to water to reproduce. Eggs are laid and fertilized in water. On the outside of the frog’s head are two external nares, or nostrils; two tympani, or eardrums; and two eyes, each of which has three lids. The third lid, called the nictitating membrane, is transparent. Inside the mouth are two internal nares, or openings into the nostrils; two vomerine teeth in the middle of the roof of the mouth; and two maxillary teeth at the sides of the mouth. Also inside the mouth behind the tongue is the pharynx, or throat. In the pharynx, there are several openings: one into the esophagus, the tube into which food is swallowed; one into the glottis, through which air enters the larynx, or voice box; and two into the Eustachian tubes, which connect the pharynx to the ear. The digestive system consists of the organs of the digestive tract, or food tube, and the digestive glands. From the esophagus, swallowed food moves into the stomach and then into the small intestine. Bile is a digestive juice made by the liver and stored in the gallbladder. Bile flows into a tube called the common bile duct, into which pancreatic juice, a digestive juice from the pancreas, also flows. The contents of the common bile duct flow into the small intestine, where most of the digestion and absorption of food into the bloodstream takes place. Indigestible materials pass...

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