Metamorphosis

Hello!

Today we thought it would be good to explain exactly how metamorphosis works. It's a term that we often use when talking about frogs, butterflies or other animals, but we've never actually explained what it is or how it works.

What is metamorphosis?

Metamorphosis is the term used to describe the changes that some animals undergo when turning into adults. It is a physical change that happens after birth/hatching. There is a brilliant quote from the website a-z animals that I just couldn't put any better:

unlike the typical subtle developments in animals, metamorphosis is dramatic. It’s controlled by a release of hormones in the cells. Mammals usually move from adolescence to adulthood and old age gradually, maintaining their form and shape. However, in metamorphosis, an animal moves through those stages and changes from one form or shape to another.

How does metamorphosis work?

Let's take the classic butterfly example./div>

Stage 1: The butterfly lays eggs on plant stems. The eggs are tiny and can be pretty much any shape: round, oval or cylindrical.

Stage 2: Butterfly egg hatches as a caterpillar, which can have up to 16 legs! The caterpillar eats as much as it can and grows a lot, shedding its skin up to five times. When finished growing it spins itself a cocoon and sheds its skin one last time.

Stage 3: This stage can take from a few weeks to several months. The larvae cells and tissues reorganise completely. The outlines of eyes, wings, legs and body become visible. The energy required for this process comes from all the food that the caterpillar eats during Stage 2.

Stage 4: The adult butterfly emerges from the cocoon and flies away.

Which animals metamorphose?

Butterflies
Moths
Frogs
Toads
Dragonflies
Beetles
Lobsters
Cockroaches
Some types of spider
Ladybirds
Grasshoppers
Some types of starfish

... and many more insects, amphibians and crustaceans.

I hope you enjoyed this short explanation of metamorphosis.

Your Green World Blog Team 💚

Image

Emerging Monarch, owned by Patty O'Hearn Kickham (on flickr.com) is licensed under CC BY-NC-ND 2.0.

Sources:
https://a-z-animals.com/blog/5-animals-that-go-through-metamorphosis-how-they-do-it/
https://www.snexplores.org/article/explainer-animal-metamorphosis

Comments

January Top Tips // 5 ways you can individually tackle climate change

Hi Everyone! This is the first of our new monthly posts for 2022! We will be sharing top tips every month, near the beginning, for things you can do during that month for the better. It's almost like a whole year of new year's resolutions (though let's hope they are achieved)! In these posts, we aren't just going to talk about climate change , of course, there will also be posts about animals , plants, habitats, plastic pollution and so much more! They will not be huge tips though, they won't demand too much of you (usually!). We need rebellions and people in the public eye spreading the word of course but we also need people like you, who can just do their bit. So, welcome to our top tips posts! We all know that we need to come together to fight the climate crisis, but we don't seem to be doing that right now. So here are our top tips for ways you can individually tackle climate change, even if this means simply spreading ...

16.08.2020 Animal of the week: Elephant

Hello. On the 12th of August it was International Elephant Day, so we decided that this week's post should be about elephants. Elephants are the largest living land mammals. There are three types of elephant; the African bush elephant; the African forest elephant and the Asian elephant. African elephants have larger ears, whereas Asian elephants have smaller ears. Elephants use their trunks to breath, bring food and drink to their mouths and to grasp objects. Elephants' legs are like pillars. They carry the Elephant's massive weight. African bush elephants weigh 6000kg, Asian elephants weigh 4000kg and African forest elephants weigh 2700kg. Basically, they are very heavy.Elephants eat grasses, small plants, bushes, fruit, twigs, tree bark, and roots. Elephants can live up to 70 years old in the wild. They communicate by sight, touch and smell. Sadly, these wonderful mammals are in danger. African elephants are listed as vulne...

August 2021 Factfile - some news, animals and a plant

Welcome to our August factfile, News Bad news :( Fires in and around Athens Athens has been under siege this month, but not by any army. The forests all around the capital and in other parts of Greece and Turkey have gone up in flames. Houses have been destroyed and thousands have been evacuated. The reason is, of course, climate change . “It’s been crazy over here. Between the extreme heat and the wildfires, it feels apocalyptic,” Eleni Myrivili wrote in an email on Thursday as the army was deployed to assist firefighters. “Ash is raining down on us here in Athens.” England's lake district in peril Lake District, a popular holiday resort in the north of England, is now eroding faster as a result of climate change and an increased amount of walkers due to the pandemic. Paths that were once two meters wide are now at least 12 meters wide on some walks. Also visitors tend to walk off the path, endangering local wildlife. With...

The life of ... a koala

Hello everyone, Today we're talking about koalas. Also known as koala bears, koalas are marsupials. So they're actually not bears. Koalas, phascolarctos cinereus , are tree dwelling and probably best known for spending most of the day sleeping. They live for up to 15 years in the wild although captive koalas generally live for longer. Koalas have a stout, gray body and a cream-coloured chest. They have a broad face, small yellow eyes and big fluffy ears. In adaptation to climbing, their feet are strong and clawed. Adult individuals in South Australia weigh 14kg and are 60-84cm big. Their Eastern cousins are considerably smaller. Koalas are found in Eastern and Southern Australia, where they live in eucalyptus trees. They feed on the leaves of these eucalyptus trees, eating up to 1.3kg a day. With a body weight of up to 14kg, this means they eat just under 10% of their body weight every single day. However, the le...

Maldives - the direct impacts of climate change

Welcome back, Today we’re looking at the direct impacts of the climate crisis . The main reason why people don’t believe in climate change is that they can’t see it with their own eyes. So, we’re going to have a look at the Maldives where the effects of climate change become more obvious with every passing year. Maldives The full name of the Maldives is The Republic of the Maldives. It is an independent country made up of about 1 200 islands in the North Indian Ocean. The northernmost island is situated 370 miles away from the mainland (India). The islands are actually the tips of an ancient volcanic mountain range that is now almost completely submerged. In fact, the highest point is 1.8m-2.4m above sea level with the average elevation being 1m above sea level. The islands have a large tourism industry, due to the stunning nature found on and around the islands. 500 000 - 1 500 000 tourists visit the islands each year. This is mainly 'nature to...

June Top Tips | Fast Fashion and Consumerism

Happy June everyone! This month you'll get introduced to the topic of fast fashion. It is a big thing, not only because of environmental reasons but also touches on topics such as child labour and exploitation. We know this sounds pretty grave once again, but here is some good news (surprise, surprise!): You can do something! Read on to learn about what fast fashion is, where the problems are and what you can do better. 1) What is fast fashion?! Fast fashion is a term for the ever-changing demand and supply loop of the clothing industry. Every season people want to wear different things, and different clothes are in style. That leads to people buying clothes, wearing them as long as everyone else thinks they're great and then jumping to the next wave of clothes. The demand of the masses changes quickly and the clothing industry has to react just a step ahead of them to make money. The goal is to produce the wanted clothes as quickly, as chea...

Evolution

Hi, So today, I am going to talk about evolution. We have mentioned this before in our Galapagos Ecosystem series but we’ve never gone over exactly what it is. So before Charles Darwin thought of his theory of evolution, the majority of people in Europe thought that all species were unrelated and that humans were not related to animals. This was mostly based on Christianity. Darwin studied hundreds of different species and on the Galápagos Islands , he first started to form his theory of evolution. Darwin's theory of evolution by natural selection, as it was later called, is best explained by the example of the giraffe. Let's assume that giraffes have short necks (as they did many centuries ago). Now a mother has two children. By chance, one has a slightly longer neck. This is a coincidence. As the giraffes feed on the lower leaves of the trees, these slower disappear. There aren't enough leaves for the giraffes. Thus the giraffe wi...

Ecotourism: what it is, the advantages and the disadvantages

Hi Everyone! Today we wanted to talk about the idea of ecotourism, including the advantages and disadvantages of this concept. If you are looking to reduce your environmental and social impact when travelling, then this is the post for you! Ecotourism is a form of tourism which limits the damage to the environment and local community. It can involve helping in community projects such as planting trees, as well as taking part in local customs and festivals. It helps to keep the local culture alive, while preserving the natural environment. The advantages are abundant. By helping in a project conserving the environment, tourists gain a new understanding and appreciation for the natural world and may be inspired to make changes in their "real" life to live more sustainably. It provides a valuable insight to a country and community, perhaps also inspiring more respect for different people and the lives they lead. The projects also provide sustainable income sources for locals, h...

2022 in a nutshell - stats, opinions, updates and goals

Happy New Year! We hope you are all enjoying the last day of 2022 (or whatever day you are reading this on). Today we are going to be looking back on 2022 and setting goals for 2023. 2022 in stats 48 posts 3191 views most viewed post: The Amazon Rainforest part 4 best posting month: October worst posting month: March 166% increase in views compared to last year How was it for us? Elsie: I really enjoyed this year from about May. After some behind-the-scenes changes, we managed to get so many more posts out and writing them felt a lot less stressful. I also really enjoyed the experience of having a guest blogger (click here ). My favourite posts to write were the Pride Month post and the ' how trees communicate ' post. They both required quite a bit of background research, which was fun and interesting. Freya: Although I haven't written on here as much as I was hoping this year, I have loved still being a part of this blog ...

2023 on Green World: the stats, our reflections & more || wrap up

Hi, Welcome back to Green World! This year has been amazing for our blog, so today we wanted to share some stats, personal reflections from each of the editors and some important information for 2024! 2023 in stats 52 posts 86 463 views most viewed post: Geothermal and Hydropower Energy in Iceland || Iceland Series (part 2) best posting month: August worst posting month: January 2610% increase in views compared to last year! How was it for us? Elsie: This year has been an incredible experience for me. I'm so grateful for all of your support and have loved writing weekly posts on topics that mean so much to me. My favourite post to write was National Parks post, it made me want to travel to all those amazing places. I've also found writing the energy comparison series really interesting because they required a lot of background knowledge and research and made me think more deeply about the complex topic of electricity production. I can't wait to see what 2024 brings us. Fr...

Green World

Search This Blog