The Frog Life Cycle Process

What is Metamorphosis? In strictly technical terms, it is a change in the form and habits of an animal during normal development after the embryonic stage. For instance, a caterpillar would change into a butterfly, a tadpole into a frog.

Imagine a world with a flourish environment, with animals you would never dream to see. Imagine a world where we could bring back extinct animals. Some people believe that bringing back animals is unethical. But these animals can do so much for us. We should bring back extinct animals because it can help the ecosystem and some of the animals extinction was our fault.

Organs begin to form in organogenesis. The embryo develops into a larval stage, the tadpole. Metamorphosis then turns the tadpole into a frog.

into an early stage embryo while still in a test tube. Scientists place the early stage embryo into

The issue I will be raising is one that might not be familiar to all who reside in California and that is primarily focused around the fragmentation and overall mutilation of areas that keep and protect the species Rana Draytonii, otherwise known as the California Red-legged Frog. One of the reasons I raise this issue, is because most importantly “these frogs were named the official state amphibian of California via AB 2364” (Patrick McGreevy.). An even greater reason to discuss this dilemma is because they are limited in their size around the Southernmost California residences, whereas they had previously occupied approximately “70% of its former habitat” according to environmentalists (Campbell.). My goal is to highlight their ecological value to the state and how the California red-legged frog’s value is more significant than the fragmentation and intrusion taking place. These red-legged frogs are currently listed as endangered, but they are vulnerable to human intrusion by means of erecting buildings, projects for road construction, introduction of a non-native species along with habitat fragmentation in areas near where they might usually reside such as near the south Mendocino County and along southern California with populations extending to the Santa Rosa Plateau (Hammerson, Geoffrey). The California red-legged frog has an intrinsic link to

Over the last thirty years or so the population of frogs has begun to decline across the world. Not only until

it has smooth or slimy skin, frogs tend to lay eggs in clusters. Unlike Toads, Toads have stubby bodies with short hind legs, for

In the beginning, poison dart frogs were not as colorful as they are today; rather dull and lifeless in terms of color. The earliest true frogs, a category that poison dart frogs fall under, were linked to a species called the frogamander, which was found in a fossil in 1995. It had dull colors, and needed to evolve quick if it wanted

There is a deadly fungus called Batrachochytrium dendrobatidis, Bd for short, that has been wiping out populations of frogs all across the world. Bd has caused dozens of extensions over the past four decades and leaving behind very few survivors. Also in the 1980s the frogs faced a similar problem with this chyrid fungus that wiped out four frog species. However, there are two frogs, the whistling tree frogs and the alpine tree frog, that are doing better than scientists predicted.

dianae. This educational display will make the knowledge of rainforests and frogs easily accessible. In addition, the inclusion of R. temporaria will provide the visitors with extra educational information about the most common and familiar frog species in the biodiversity.

We speculate that the southern toad is in higher abundance in the direct vicinity of water versus the dryer surrounding area due to the breeding season (February- October) and the high levels of nutrition needed (Meshaka, W. E., J.R., &

BASIC INFO: This tiny frog grows to just 2.5-3cm long, weighing 2-3 grams each. They have a lifespan of 9 years, and take the first 4 preparing to breed, which they do so in a short period during the Summer months. Females typically lay between 10-40 eggs in a small nest near the edge of a pond.

We all know stories of frogs being tossed into boiling water - for example, a young couple being plunged into catastrophic debt by an

[1] "Development of the embryo begins at Stage 1 when a sperm fertilizes an oocyte and together they form a zygote."

Frogs, toads, caecilians, and salamanders are the members of the class Amphibian (amphi- meaning “on both sides” and bios- meaning “life”). These members always require water for reproduction. Most Amphibians undergo metamorphosis, which is a usually degenerative pathological change in the structure of a particular body tissue. And, in the case of Amphibians, it is the changing of a tadpole into