The 10 Animals In Danger Of Extinction In The World
The 10 Animals In Danger Of Extinction In The World
- 1 The 10 Animals In Danger Of Extinction In The World
- 2 What is extinction?
- 3 Tiger
- 4 Leatherback turtle
- 5 Chinese giant salamander
- 6 Sumatran Elephant
- 7 Vaquita
- 8 Saola
- 9 Polar Bear
- 10 North Atlantic Right Whale
- 11 Monarch Butterfly
- 12 Golden Eagle
- 13 What Makes Humans Different From Animals?
- 14 What Makes Humans Different From Animals?
- 15 Let’s consider two possibilities.
- 16 When you’re a nonhuman .
- 17 Our ability to destroy
- 18 Consider a third possibility: our imagination.
- 19 We define ourselves.
- 20 23 animals that are in danger of disappearing forever
- 21 Gadfly insect. Description, features, species, lifestyle and habitat of the gadfly
- 22 Description and Features
- 23 Kinds
- 24 Lifestyle & Habitat
- 25 What is the danger to humans and animals
- 26 Reproduction and longevity
Do you know what it means to be in danger of extinction? Every day there are more and more animals that are making the list for endangered species. But, still today, many people do not really know what it means to be going extinct, why it happens and which animals are on this red list. According to official data, around 5000 species are considered in danger of extinction and these numbers have worsened alarmingly in the last ten years.
For this alarming reason, here at AnimalWised we have decided to explain why and which are the 10 animals under threat of extinction in the world.
What is extinction?
By definition the concept of extinction is very simple, a species that is in danger of extinction is an animal that is about to disappear as there are very few inhabiting the planet. The complex here does not lie in the term, but in the reasons why and the subsequent consequences of this decline.
Seen from a scientific point of view, extinction is a natural phenomenon that has occurred since the beginning of time. While it is true that some animals adapt better than others to new ecosystems, this constant competition eventually results in the disappearance of animal and plant species. However, the responsibility and influence that we humans have in these processes is increasing. The survival of hundreds of species has been threatened thanks to factors such as: the drastic alteration of the ecosystem, excessive hunting, illegal trafficking, habit destruction, global warming and many more. And unfortunately, all of these are taking place and controlled by man.
The consequences of animal extinction is very serious and in many cases, causes irreversible damage to the health of the planet and humans. In nature everything is connected, when a species is extinguished, the complete ecosystem is altered. Therefore biodiversity, a key element in the survival of life on earth, is lost.
This super cat is practically extinct. There are already four different tiger species that have gone extinct. There are only about five subspecies of tiger left, located in Asian. At present there are less than 3000 of these tigers. The tiger is one of the most threatened animals in the world, it is sadly hunted for its invaluable: skin, eyes, bones and even organs. The skin of a tiger can sell for up to 50000 dollars on the illegal market. Hunting and loss of habitat are the main reasons for its disappearance.
Cataloged as the largest and strongest turtle in the world, the leatherback turtle is able to swim incredibly long lengths, from the tropics to the subpolar region. This extensive journey is made in search of a nest and to provide food for their young. Since the 80s, its population has fallen from 150000 to 20000.
Turtles often confuse the plastic that floats in the ocean for food, causing death. They are also loosing a large majority of their habitat due to the constant development of large hotels on the seafront, where they usually nest. The leatherback sea turtle is one of the most endangered species in the world.
Chinese giant salamander
This amphibian has become an incredibly popular food in China and because of this, there are almost no specimens left. The Chinese giant salamander, known scientifically as Andrias Davidianus: can reach up to 2 meters long. It is officially the largest amphibian in the world. This amphibian is also threatened by high levels of pollution of its wooded streamed environment, of southwestern and southern China.
The Sumatran elephant is on the verge of extinction and is considered one of the most endangered species in the entire animal kingdom. Due to deforestation and uncontrolled hunting, in the next twenty years, this species may no longer exist. According to the International Union for Conservation of Nature (IUCN) «although the Sumatran elephant is protected by Indonesian legislation, 85% of its habitat is outside of protected areas.»
Elephants have complex and narrow family systems, very similar to those of human beings. These are animals with a very high degree of intelligence and sensitivity. There are currently less than 2,000 found Sumatran elephants, and this number is on the decline.
The vaquita is a cetacean that lives in the Gulf of California and was discovered in 1958. Unfortunately, by 2016 less than 100 of these species remain. It is the most critical species within the 129 species of marine mammals. Due to its imminent extinction, conservation measures have been established, but the indiscriminate use of trawling has not allowed for real advancements of these new policies. This animal is enigmatic and timid and almost never travels to the surface. Therefore, they are often caught by giant fishing nets where they are trapped and mixed with other fish.
The saola is a «Bambi» (bovine) with spectacular pints on its face and very long horns. It is known as the «Asian unicorn» as it is very rare and almost never seen. The saola lives in isolated areas between Vietnam and Laos.
This antelope used to live a quiet and solitary life, until it was discovered and is now hunted illegally. However, it is predominantly threatened by its constant loss of habitat, caused by logging. As it is a very rare and exotic animal, it is also the most wanted and results as one of the most endangered animals in the world. It is estimated that only 500 saola’s remain.
This polar bear species has suffered greatly from the consequences of climate change. We can say that the polar bear is sadly melting along with its environment. The Arctic and these bears depend on the maintenance of polar ice caps to live and feed themselves. Since 2008, polar bears were the first species of vertebrates listed in the Endangered Species Act of the United States.
The polar bear is a beautiful and fascinating animal. Among many of its characteristics are that they are skilled hunters and natural swimmers who can surf without stopping for more than a week. They are invisible to infrared cameras, only their noses, eyes and breath are visible to the camera.
North Atlantic Right Whale
The North Atlantic Right Whale most endangered species of whale in the world. Scientific studies and animal organizations claim that there are less than 350 of these whales traveling along the Atlantic coasts. Although it is officially a protected species, its limited population is still threatened by commercial fishing. These whales drown after being wrapped in nets and ropes for long periods of time.
These marine giants can reach up to 15 meters long and weigh up to 40 tons. Its real threat began in the 19th century with indiscriminate hunting, reducing its population by 90%.
The monarch butterfly is special among all butterfly species because they are the only ones that carry out famous «monarch migration». This is known worldwide as one of the widest migrations of the entire animal kingdom. Each year, four generations of monarch pups fly together for more than 4,000 miles from Scotland to the Mexican forests where they spend their winter.
During the last twenty years the monarch population has decreased by 90%. The milkweed plant that serves as their food and nests has been decreasing, destroyed by the increase of agricultural crops and the uncontrolled use of chemical pesticides.
Although there are several species of eagle, the golden eagle is the one that comes to mind when they people ask: if you could be a bird, which one would you like to be? due to its incredible popularity.
Its home covers almost all of planet Earth, but it is commonly seen flying through the sky’s of Japan, Africa, North America and Great Britain. Unfortunately in Europe, due to the reduction of its population, it is much harder to spot these eagles. The golden eagle has seen its natural habitat be destroyed by the development of deforestation, which is why it is part of the list of the 10 most endangered animals in the world.
If you want to read similar articles to The 10 Animals In Danger Of Extinction In The World, we recommend you visit our Endangered animals category.
What Makes Humans Different From Animals?
The Dodo Archive
What Makes Humans Different From Animals?
What’s the difference between humans and animals? Of course, humans are animals, but there must be one or two characteristics that distinguish us as unique from the rest of the animal kingdom: a part of ourselves that we can claim as our own and say, «Yes, that’s what it means to be human.»
Maybe you’ve searched this question in Google and found a top ten list of supposed unique characteristics such as language, free moral agency or, as George Carlin pointed out, our ability to make plastic. Maybe you studied Aristotle, and he convinced you that it’s our ability to think and act rationally.
Or maybe you’re on the other side of the argument. You think that the trivial differences between humans and animals don’t overshadow the tremendous underlying «oneness» of all living things.
If you’re like me, you’re not satisfied with any of the above answers. Animals seem to share at least some form of speech and free will. And to say that we’re all one big family seems to disregard the fact that humans live very differently from Earth’s other animals.
Let’s consider two possibilities.
I know it seems unlikely that there is just one definitive characteristic which distinguishes us, so let’s entertain two possibilities: one general possibility and another pretty specific one.
First, we’ll say that what separates us from animals is our ability to manipulate the world around us. Second, we’ll say that what separates us from animals is our unfortunate ability to . well, we’ll get there in a minute.
When you’re a nonhuman .
Imagine that you’re an animal living in the wild. You eat what you can find. You sleep outdoors, of course. Perhaps you frolic in a meadow or swing from vine to vine in a jungle. And, oh yeah, you are naked.
However, you do notice that your food supply is becoming more scarce each year. The animals or plants you eat no longer thrive where they have for generations. Perhaps you and your herd migrate to wherever you can find food and shelter.
Searching for basic survival, you’re in unfamiliar territory. Your herd is dying off, and you haven’t seen another animal like yourself for as long as you can remember. You may not have the cognitive processing of a human, but you still somehow know: you must be the last of your kind.
You’re frustrated. You want to scream and shout, you want to speak up to defend yourself, but you can’t.
Perhaps this is the greatest difference between a human and a nonhuman animal: our ability to voice our opinion and create change in the world. If you need to be convinced that humans have created change, take a quick look at a city landscape or just consider whatever technological device you’re using to read this essay: in more ways than any other animal, humans have brought about change on Earth.
Is our ability to shape the world around us what separates us from our animal brethren? It seems to be a good answer, but it’s vague. «Manipulation» and «change» beat around the bush, and don’t get to the heart of what humans have really been doing on Earth.
This brings us to the second, more specific, answer to the question: What makes humans different from animals?
Our ability to destroy
Consider the possibility that humans are unique, but not for any of the noble reasons we typically brag about: wisdom or opposable thumbs. Perhaps what distinguishes humans from the rest of the animal kingdom is our distinct efficiency at wiping out life on Earth as we know it.
A headline from a recent study published in Science Advances reads «Accelerated modern human-induced species losses: Entering the sixth mass extinction.»
Maybe the term «mass extinction» rings a bell for you. The most recent one occurred about 65 million years ago. It was the fifth mass extinction, and that’s why there are no dinosaurs walking the earth today.
You don’t need to read the study to consider the horrifying scope of its conclusion, although I recommend taking a look at it. The message is all there in the title. It’s the same message I’ve heard since I was old enough to read these types of studies: life as we know it is being destroyed by humans.
Is destruction our defining characteristic within the animal kingdom?
Consider a third possibility: our imagination.
I don’t believe humans are the praiseworthy creatures we’ve always said we are — that is, I don’t feel rational, wise or compassionate. We seem to have fallen from these ideals. If humans acted in such a noble way, then how did we end up in this catastrophe: caught between a recent global industrialization and the not-so-distant apocalyptic future?
Here’s the light at the end of the tunnel. We didn’t industrialize to destroy. We industrialized because we had a vision of what our lives could be. We innovated and cultivated our visions of seemingly impossible goals into fantastical realities.
At our core, humans are dreamers. It is this characteristic which allowed us to shape the world. We lacked foresight — we could’ve used a hell of a lot more foresight — but we never lacked imagination.
This human characteristic may lead us to our own destruction, but it also may be our only hope for saving ourselves and the diverse life on Earth.
We define ourselves.
If we wanted, we could be defined by our destruction. We could follow in the footsteps of our immediate ancestors, selfishly ravaging the world’s resources as if we, ourselves, weren’t susceptible to the destruction we cause. However, if we wanted, we could choose a different path.
Let’s all take a moment before we go to sleep tonight to remember that we have the capacity to reflect upon what it means to be human and to choose our legacy.
By accepting the harsh realities of our world today, we receive an opportunity to define our species by changing our course of action and save what we will otherwise destroy. As this study and others have noted, there’s still time to change our ways and save ourselves.
If there was ever a time when humans were called upon to feel compassion, to think in new ways and to solve problems that have never been solved before, it is today. Turning things around will require the best parts of our humanity.
Hopefully, we can search within ourselves for a way to save life on Earth, including humans. And perhaps in the process, we could discover a part of ourselves that is not only honorable and legendary, but also beautiful and distinctly human.
For those of you who read this article all the way to the bottom and those of you who scrolled here without reading the words above, you deserve some inspiration for the day. Please enjoy the following song by M83.
23 animals that are in danger of disappearing forever
Last March, the world’s last male northern white rhino, Sudan, died at 45 years of age.
Sudan — who is named for his country of birth and lived under the protection of armed guards at the Ol Pejeta Conservancy in Kenya, away from poachers — suffered from a degenerative muscle and bone condition and was euthanized.
Fortunately, scientists were able to gather genetic material that could one day be used to create more northern white rhinos through IVF. Sudan also left behind a daughter and granddaughter, so there’s a flicker of hope for the wildlife preservation community.
Even so, there are numerous other animal species and subspecies that are in danger of perishing for good. The Amur leopard and Sumatran elephant are just two of 19 species categorized as «critically endangered» by the World Wildlife Fund, while the white-rumped vulture, Philippine crocodile, and Chinese pangolin have been given the equivalent classification on the IUCN Red List.
Keep scrolling to see 23 animals that are on the verge of extinction.
Gadfly insect. Description, features, species, lifestyle and habitat of the gadfly
The representative of parasitic flies — gadfly Belongs to the family of dipterans. More than 150 varieties have been recorded and described, of which one can harm a person. What danger is the parasite for mammals, the lifestyle of the insect, how it reproduces — we will talk about this in this publication.
Description and Features
Diptera with a short antennae belongs to the Tachi-nidae family. Large hemispheres of the eye with multi-colored overflow on a shaggy body up to 17 mm long, transparent wings of the fly make up the appearance. A dangerous species for humans is Dermatobia hominis. He is able to attack and lay his eggs under the skin.
Many saw these large flies with a bright color in the country, nature or fishing. Externally gadfly in the photo very similar to diptera horseflies, they are often confused with each other. Their habitat is the same. The bite of horsefly is dictated by hunger, it is a blood-sucking insect. The main difference is nutrition. Gadfly as horsefly can bite, but only for breeding purposes.
In some regions, the insect is known as paut. Many species of diptera flies parasitizing on large mammals are united by the word gadfly. Common features for insects:
- gadfly sizes 15-20 mm;
- the mouth is absent, or is reduced;
- body with villi;
- huge eyes;
- body is oval;
- fore tarsus shorter than hind legs;
- almost transparent mesh wings.
Body colors are very different. For the northern latitudes, it has calmer tones:
- dark gray;
- different shades of blue.
In the south and in the tropics, the insect is very similar to small bumblebees with stripes of orange-black color. There is an opinion that the flight speed of the gadfly is 120-140 km / h comparable to a dragonfly.
The Well-podermatidae family includes insects in which the larva undergoes its development in under the skin of animals in nodules. Parasitize on many mammals. Among them:
- Small rodents. Here, development takes a little time. The female lays eggs on the wool. The larvae emerging from them are introduced under the skin. There is no migration.
- Large mammals. After laying on the hairline, the larvae emerging from the eggs begin to migrate to the back of the animal. Their path of movement is along the subcutaneous layer, inside the muscle, internal organs. Travel time from 3 to 9 months.
There are types of gadfly:
- Gasterophilidae — parasitic in the stomachs of animals. Flies of medium or large size (9-20 mm). Adults do not need food. Found in the eastern hemisphere, but equine is common everywhere. Larvae live inside the stomachs of artiodactyls, elephants, and hippos. The female gadfly lays about 2 thousand eggs on the skin or hair layer near the mouth. Gasterophilus pecorum is laying on grass. Larvae of the first age penetrate the digestive system and live until they grow. Naturally (with excrement) they go outside. In animals infected with parasites, a pathology of the gastrointestinal tract develops.
- Equine (Gasterophilus intestinalis) — one of the common species. Length varies from 13 to 16 mm. On the body, hairs are yellow or brown. Wings are all with dark spots. A noticeable feature is a bright black dot in the radial vein. The insect uses horses and donkeys for its breeding. In females, the oviposites are strongly bent under the body. During flight, females masonry on the surface of the skin in places where victims can scratch their teeth. When the larva enters the mouth, it develops for about a month, then passes through the pharynx into the stomach. Their number sometimes reaches hundreds.
- Northern subcutaneous (Oedemagena taran-di) — lives off of reindeer. Animals for wintering travel huge distances. There, insects grow, leave the host and pass into the ground. With the onset of spring, deer wander north. Young gadflies must fly many kilometers to parasitize animals again. The natural instinct drives insects to the north, they reach victims and launch an attack on defenseless deer. One female is able to lay up to 650 eggs.
All gadflies are divided by the type of mouth opening. In Oestridae typicae, it is absent or underdeveloped. Representatives of the small Cuterebridae group have a more pronounced proboscis (mouth), without tentacles. Scientists divide the first type into three departments:
- Gastricolae — larvae with two hooks for implantation; there are special tubercles with small spikes;
- Cavicolae — two hooks and large spikes, female viviparous, ovipositor absent;
- Cuticolae — no hooks, small spikes, they are almost invisible.
Cattle attack Hypoderma bovis De G. bull gadfly. For horses, donkeys, the equine species became a threat. Sheep try to escape from the sheep type Oestrus ovis L. Even wild animals have their own varieties:
- American proteins are attacked by C. emasculator Fitch;
- the intestines of an elephant affect Cobboldia elephantis Brau;
- Rhino suffers from Gastrophilus rhinocerontis Ow.
In the tropics of Central America, Ver macaque and moyocuil live, which can accidentally attack a person. After gadfly bite and the introduction of the larva grows a large tumor, or hardening with a hole at the top. This type affects dogs, livestock.
In the photo the gadfly larva
Lifestyle & Habitat
The place of parasitism in gadflies is different, therefore 3 types are distinguished:
- Gastric. Distributed almost universally. The female makes a laying on wool, limbs or grass. After penetrating inward, a ripening cycle begins. The result is an exit to the surface of the skin through fistulas or with waste products. All this causes severe itching in the animal. The most common is horse gadfly.
- Subcutaneous The habitat of this type is all latitudes except the Far North. Cattle choose as a victim. The female insect lays eggs to the hair, the larva penetrates the skin. The focus of inflammation is developing — myiasis. Before molting, the parasite enters the subcutaneous layer, forming holes there. Cases of its penetration into the skull of the animal and human brain have been recorded. This has been fatal.
Hypodermic gadfly, larva lays on bite
- Cavity. The main difference from the previous ones is that females give birth to larvae during the flight, bypassing the stage of laying eggs. They are able to sprinkle them on the mucous membrane of the eye, nostrils of an animal or person. After which the parasite remains inside the eye, eyelid or nose. Then, through migration, it gets inside — the sinuses, in the oral cavity, etc. At the injection site, severe inflammation develops.
A cavity gadfly can most often be found on sheep.
A human gadfly is not found in Russia, but can be carried by people already infected with parasites. It differs from the rest by the penetration mechanism. The female first lays eggs on an insect that can feed on human blood. This is usually a mosquito, tick or other bloodsucker. After a bite gadfly larva moves under the skin of the victim, there continues the process of life.
The parasite can be found everywhere, except for the coldest latitudes (Antarctica). Mostly the gadfly inhabits in warm and temperate climates. In Russia, there are many of them in the vastness of Siberia, the Ural and Northern regions. Frequent insect clusters near:
- livestock farms;
- places of passage of animals.
Insects love a humid climate, so they swarm in large numbers near rivers, ponds and swamps.
The parasite larva receives food while inside the victim. Adults cannot absorb food, their oral apparatus is reduced. The pest inside the victim is pear-shaped with mandatory spikes on the scales for advancement. All this is enclosed in a sclerotic capsule, with an opening at the bottom. Length reaches 25 mm, diameter 7 mm.
The basis for nutrition is circulatory fluid. After fixing inside the host, the larva begins to accumulate all useful substances for further existence. A liquid mass is released in the body of the parasite, which provokes severe pain and inflammation.
What is the danger to humans and animals
Gadfly Biting Insect, for people consider the most dangerous gastric and abdominal type. After penetration into the body, the larva begins to actively feed. It deprives him of vital energy, vitamins, pathological processes begin. Migration throughout the body and internal organs, down to the brain, causes health problems. Deaths from infection are frequent.
When the larva has fallen inside the victim, miias begins (the formation of the parasite). More often this happens in the summer. The infection process is proceeding in stages:
- female insect fixes eggs on the human scalp (usually on the head);
- a parasite from body heat begins to surface;
- implantation under the skin or in organs;
- the formation of fistulas for the breathing of parasites through which they exit.
There is a certain risk group in humans. This category needs to be careful when walking, when dealing with livestock. In the zone of increased risk of infection:
- advanced age;
- inadequate hygiene;
- mental illness;
- craving for alcohol;
- type 1 and type 2 diabetes;
- diseases that provoke blood clotting;
- frequent stays in the tropics and subtropics.
At the slightest sign of infection, you must contact a medical institution. Flies-flies are dangerous for animals, they are annoying, livestock are defenseless from their attack. The potential victim is very nervous, begins to lose weight from poor nutrition.
This reduces the yield of livestock. Parasitic larvae take for themselves beneficial substances. A large number of pests weakens animals, they are sick, they lose their sight. Migration completes the destructive effect after infection. Nerves are damaged, internal bleeding and paralysis begin.
Reproduction and longevity
The insect undergoes a complete transformation cycle: egg, larva, pupa, imago. Life expectancy is 1 year. There is one feature, adult gadflies do not receive food. Their existence is possible due to substances in the body obtained by the larva. The period of life completely depends on the temperature and speed with which the insect arranges a «platform» for posterity.
Female gadfly carefully selects a place on the skin of the animal. Suitable for this areas with less wool. On the hair they fix up to 2-3 eggs. This condition lasts from 3 to 20 days. Development Phases:
- The larva at stage 1 grows for several days, then falls inside the victim, thanks to hooks on both sides. The movement goes through the blood vessels, spinal column and to the fatty layer in the direction of the cerebral canal. The rest is sent to the esophagus, is introduced into the mucous tissues.
- Larvae 2-3 tbsp. move to the back, lower back. At the place of attachment — capsules made of fabric. To develop further, they need oxygen. For its receipt, the larvae make special moves through the skin of the animal (fistula). As they develop, they molt through the finished holes in the dermis to the surface. After that, pupation takes place on earth.
- The next phase lasts from 1 to 7 days after leaving the body of the animal. The rate of further pupal growth, depending on humidity and temperature, lasts 33-44 days.
- As a result, the adult fly (adult) emerges within three to five seconds. The insect is ready for new mating and flight.
A short life cycle of a fly (1 year) ends in death; the gadfly does not hibernate in the fall. In the cold winter, the larvae live inside the victim. An adult insect lives very little (3-20 days). By the end of life, it loses most of its body weight. In cold weather, the insect almost does not fly. In this case, life is extended for another month.
Adult gadflies are able to breed immediately after leaving the pupa. It is noticed that the mating process takes place in a permanent place where they fly every year. After which the females begin to search for the animal to continue the genus. A large number of eggs in each promotes rapid reproduction. Insects have few enemies, only birds. In the southern regions, gadflies mate longer than in the northern latitudes.
Gadfly adapted to live next to many animals. They parasitize on small rodents, artiodactyls, the largest rhinos and elephants. Even with a minimal number, due to the large fecundity of the females, insects breed rapidly with an almost complete absence of enemies.