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October 31, 2009

The Sleeping Beauty Syndrome

Human African trypanosomiasis, also known as the sleeping sickness, is a vector-borne parasitic disease. Sleeping sickness is caused by protozoa of 2 organisms from the Trypanosoma Genus - namely the Trypanosoma brucei rhodesiense and Trypanosomoa brucei gambiense.



T.b.rhodesiense - infection emerges in a few weeks and is more virulent and faster developing as compared to T.b.gambiense. (10% of the reported cases of sleeping sickness)


T.b.gambiense - results in a chronic condition which can extend in a passive phase for months or years before symptoms emerge. When the symptoms show up, the patient is already in an advanced disease stage where the central nervous system is affected. (90% of the reported cases)



Causes
Tsetse flies act as a vector of the Trypanosoma. Tsetse flies are infected when they consume blood from infected people, the parasites enter the midgut of the fly and multiply in the salivary glands.




Infected Tsetse flies go around biting people, leaving behind red, painful swollen wound when they inject the parasites into the skin tissue. The parasites will then enter the lymphatic system and pass into the bloodstream.

Symptoms of the disease

General

  • Anxiety
  • Drowsiness
  • Fever
  • Headache
  • Increased sleepiness
  • Swollen lymph nodes
Patients often feel very sleepy in the day but have difficulty sleeping at night and this gives the
disease it's name.

Infection
  • Mother-to-child infection occurs when the trypanosome cross the placenta barrier and infect the fetus.
  • Accidental infections have occurred in laboratories due to pricks from contaminated needles.
If no treatment provided, Sleeping sickness is 100%
fatal!

Screening
Diagnosis must be made as early as possible before the neurological system is affected
to reduce complications.

Microscopic observation of:
  • Blood smear
  • Lymph node aspirates
  • bone marrow
  • Cerebrospinal fluid tests (in the later stage of the disease)


Treatment
  • Melarsoprol - used for both forms of infection. It is derived from arsenic and can be fatal to as much as 10% of the patients taking the drug.
  • Eflornithine - effective against T.b.gambiense. Less toxic, alternative for Melarsoprol.
  • Pentamidine - used for the treatment of 1st stage of T.b.gambiense infection. However, it can cause toxic or allergic side-effects.
  • Suramine - treatment for the 1st stage of T.b.rhodesiense infection. Side effects in urinary tract and allergic reaction.

July 25, 2009

Mutant Human Eater in India

In some places in India, people throw burnt corpses into the river after funeral ceremonies. Never do they know that, due to this particular cultural practice of theirs, a mutant breed of fish has changed their diet from scavenging to human-hunting as they developed a special fondness of human flesh after consuming the dead bodies. And it was said that this mutant fish is responsible for the deaths of many people swimming in the Great Kali, a river that flows along the India-Nepal border.



This mutant breed of human-hunting fish is a type of catfish, called goonch, it is one of the largest freshwater fish in the world.

"The locals have told me a theory that this monster has grown extra large on a diet of partially burnt corpses. It has perhaps got this taste for flesh by feasting on remains of funeral pyres." Jeremy Wade, a biologist investigating the creature.
During Jeremy's investigation, he caught one goonch that weighed 161lb (73kg) and was nearly 6ft (about 183cm) long!

"If that got hold of you, there'd be no getting away." He said.
The first victim of this extraordinary creature was a 17-year-old Nepalese boy in April 1988. According to eyewitnessess, he was cooling himself in the river when something suddenly pulled him below the water surface. He was killed.

Three months after the first case, another young boy was dragged underwater right infront of his horrified father who could do nothing to save his son.
In year 2007, an 18-year-old Nepali disappeared in the river after being dragged by something described as "elongated pig".



There are still a lot of "monsters' of these kinds lurking in the river, deep seas or whatever, I think that the appearances of these 'monsters' are not by chance. More or less, human should take the responsibilities for destroying the natural habitats of animals and deprive them from their natural diets. *sigh.

June 22, 2009

Maggot Therapy - The Smallest Surgeons

For centuries, maggots have been well known for their ability to accelerate the healing of wounds. During warfare, the military doctors observed that the wounds of soldiers that were infested by maggots had a faster recovery rate and the soldiers' chances of death from infection of wounds were much lower than those whose wounds were not infested with maggots. However, after the discovery of the antibiotic penicillin, the Maggot Therapy is outdated due to several reasons. People believe that the use of penicillin to cure wounds is a more hygienic method, and patients find the antibiotic much more acceptable as compared to the use of maggots.
Source: Click here.

Many years later, the ideal healing rate of wounds induced by the maggots resulting in the reintroduction of maggot therapy (also known as Maggot Debridement Therapy) in modern medical field. One of the reasons is that the bacteria that causes infections has grown to be immune to antibiotics. The medicinal maggots work in three actions:
  1. Remove (by eating) the dead necrotic, infected tissue on the wounds. In order for a wound to heal, it is vital to remove the dead tissue as it will promote the growth of bacteria on the wound and thus resulting in further infections.
  2. Disinfect the wounds by killing bacteria. The secretion by the medicinal maggots create a condition that is not suitable for bacteria to strive.
  3. The secretions of the maggots also found to have the ability to stimulate the growth of new tissues (human fibroblasts).
After seeing the benefits of maggot therapy, let's have a look at the limitations of it.

Maggot therapy does not work on dry wounds and the wounds on body cavities. For a medicinal maggot to feed, the wounds must be moist, and adequate amount of oxygen is present. Also, many patients may reject the use of live maggots on their wounds. As a result, a dressing is applied to the wounds where the maggots feed to prevent escape and hide the sight of maggots having their meals on the wounds from the patients.

June 15, 2009

The Man Who Lives Within the Present

In real life, there are people experiencing the same condition as Lucy Whitmore in the movie ' 50 First Dates'. In the movie itself, Lucy has memory of only one day, meaning that everyday she wakes up no longer having memories of the previous day. This could be a real big problem in life!


Clive Wearing, an expert in early music at the peak of his musical life back in 1985, contracted a virus which supposedly only causes cold sores. In Clive's case, the virus damaged the part of his brain which is resposible for storage of memory. Clive suffers from an acute and long lasting case of Anterograde Amnesia since then which greatly changed his life.

From that day onwards, Clive can no longer form new memories. To him, every moment is like waking up from a dream, he cannot remember things that happen seconds ago. Instead, Clive's memory only lasts for 7 seconds! As a result, he becomes a man without past. He is unable to remember any of his friends. However, he still recognizes his wife Deborah, but remembers her as his girlfriend. He greets Deborah happily every time they see each other, as if they have not seen each other in years, though she may have just left the room to deliver him a glass of water. Clive also lost the ability to link a type of food with taste, as he has forgotten.

Deborah has written a book titles " Forever Today" based on the condition of her husband's condition.

June 13, 2009

Axolotls, Pink Body Creature!


What is that actually?! This thing looks like an alien, don't you think so? When I first saw this creature, I thought it is a mutated lizard with human-like features. Though it looks weird, it's smiley face does show some friendliness.

Actually, this creature is called Axolotl, the best known of the Mexican neotenicmole salamanders. At the baby stage of this species, the larvae fails to undergo metamorphosis (eg the process whereby a tadpole grows into a frog). As a result, the adult Axolotl remains aquatic and has gills instead of lungs.

At adult stage, this species is around 15 to 45 cm in length. Just like the salamander larvae, the Axolotls have the same features as the typical types, with external gills and a caudal fin extending from behind of the head. They have lidless eyes, and a wide head. They also have long, thin digits on their underdeveloped limbs. And Axolotls feed by suction. Axolotls strive at temperatures ranging from 14°C to 20°C.


With the pinkish body and the big wide smile on their faces, Axolotls can be adorable.

June 10, 2009

Meet the Alien In Deep Sea

Anglerfish is a type of very rare creature living in the deep sea. In most Anglerfish species, there is a long filament protruding out above the fish's eyes, at the tip of the filament there is an irregular growth of flesh (looks like a bulb, called esca). The long filament can move in all directions, while the esca acts as a bait to lure prey to the Anglerfish. When the prey is close enough, the Anglerfish will open its huge jaws and devour the prey whole! The Anglerfish can swallow a prey that is twice its own body size.


In some species of Anglerfish that lives deep under the sea where sunlight is scarce, the esca will emit light due to symbiosis with bacteria. The bacteria enters the esca, starts to multiply rapidly till their collective glow is bright enough to attract other fishes to become the prey of Anglerfish.

Here comes the interesting part, the reproduction of Anglerfish. As Anglerfish is extremely rare, it is very difficult to find a mating partner. In order not to become extinct, the Anglerfish has a very distinct way of reproduction.

At birth, the males are born with well developed olfactory organs (sensory system for smell). When the male Anglerfish mature, its digestive system starts failing, resulting in not able to feed independently. As a result, before the male dies from failure of digestive system, it has to find a female using its powerful olfactory organ. The male can detect pheromones from a mature female using its olfactory organ. So what will happen after the male found his mating partner?

After the male found a female, the male will bite into the female's skin, and digest the skin of his mouth and her body using a type of enzyme secreted. This will enable the couple to fuse with each other to the blood vessel level. The male then degenerates into a pair of gonads that parasites on the female. The gonads (male) release sperm in response to the hormones in the female's bloodstream signalling eggs release. This ensure that, whenever the female is ready to spawn, there will be sperm available to fertilise the eggs.

One of the species of Anglerfish, the little thing protruding
out at the back of the fish is the male that fused with the female

For the Anglerfish, the males reduce to parasites on females after maturation. The males are deemed to sacrifice in the reproduction system in this species, in order to ensure the survival of the species of Anglerfish.

June 8, 2009

Deadly Bites

Have you ever been bitten by a snake before? What will happen if you are bitten by a Rattlesnake?


Rattlesnakes are venomous and they were given the name due to the rattle located at the end of their tails. This species is a little bit different from most of the snake species, they give live births instead of laying eggs.

When rattlesnake bites, it will inject hemotoxic elements which results in tissue damage and affect the circulatory system by destroying blood cells, skin tissues thus leading to internal hemorrhaging! Its venom contains neurotoxic that can paralyse the nervous system of a person, sometimes stopping the breathing of its victims. Therefore, being bitten by rattlesnake is very dangerous!

After rattlesnake's bite

Once bitten, these are the symptoms:
  • extreme pain at the location of the bite, together with burning sensation
  • swelling
  • bruising and discoloration occurs
  • numbness
  • nausea, vomiting, light-headedness
  • breathing difficulty
  • swelling of mouth and throat
You should NEVER:
  • cut the bitten area
  • apply ice pack on the swollen part
  • immerse bite location into water
  • use your mouth to suck out the venom ( you're not acting in a movie)
And you SHOULD:
  • wash the bite with water and soap
  • Immobilize the bitten area and keep it lower than the heart
  • Seek medical attention immediately
Do not think that you are safe after you kill the snake that threatens you and start to play with the dead snake. I mean it, many people have the tendency to examine the specimen that they have killed in the wild. Snake can still bite after it dies, this can last for one hour after its death!

June 7, 2009

Creepy Surgeons

There is a type of surgeons who do not have hands, legs, but they can be considered as a professional especially in the field of reconstructive surgery.

With them around, patients' reconstructive surgeries will have higher chances of success, and time taken for the wound to heal will also be much faster.

However, even though the surgeons has such a good reputation in this area, many patients do not like to be treated by them.

This is because, the surgeons are flesh-craving and uses their mouth to treat patients!

The use of leeches to cure illnesses took place more than 2500 years ago in Egypt, where the Egyptians used leeches to drain "impure blood" from the body to cure many kind of illnesses. Nowadays, leeches are still widely used in post surgical treatments. The components in the saliva of the leeches have quite a number of therapeutic values, the saliva can relieve venous congestion (accumulation of blood abnormally) and improve blood flow to the compromised free tissue flaps.

The leeches' saliva contains anticoagulants that prevent blood from clotting. After a full meal of blood, the leech will detach itself from the patient, the anticoagulants left behind will still be effective for up to several hours. As a result, blood will continue to ooze out of the wounds.

Source: Click Here


This may sound scary, but this is essential to prevent venous congestion and encourage re-establishment of blood flow through the tissues after reconstructive surgery. If venous congestion occurs, and blood does not flow through the replanted tissue, the reconstructive surgery is deem to fail. Without proper blood flow, the replanted tissue is unable to get oxygen supply, it will turn black and become useless.

During leech therapy, leeches ensure constant blood flow in the areas, new veins will extend into the reconstructed part from the healthy tissue and promote re-establishment of adequate blood drainage.

However, there are still some adverse effects in leech therapy.
  • Patients may experience local pain during the therapy. As the anesthetic effect of the leech saliva may take a while to occur, the initial biting may trigger pain.
  • Local itching will happen after the bite.
  • Infection may take place if the leeches are not properly sterilised.
Leech therapy is an effective post surgical treatment, though it has its shortcomings, its advantages still shouldn't be overlooked.

June 6, 2009

Parasitic Twins

In my opinion, it is really awesome to have a twin sibling, as in identical twin. Not only your appearences are exactly the same, many of the twins will have telegraphy which is so cool! However, when you look at your identical twin sibling, other than the striking resemblance, what will be in your mind?

Just imagine...

For non-identical twins, two eggs are fertilised by two sperms in the ovary. For identical twins, an fertilised egg is split into two, and grows into two individuals. The person right in front of you is your closest sibling, but none of you is older or younger. You two are of the same age, exist at the same second of time.

Long long time ago when both of you were in the womb of your mom, actually is not "both" of you, as there is only one egg. Therefore, the person living with you is not your sibling! The person used to be a part of you, or you are just used to be a part of the person.

Above is just my personal opinion. In the following, I am going to write about Parasitic Twins.
Parasitic twin occurs when a twin embryo fail to separate fully during development in the uterus, and one of the twin fail to develop as per normal. The undeveloped twin will be incompletely formed on the fully developed twin.


An example is Sanjay Kumar in India. In the case of his, it is known as fetus in fetu. This is a condition whereby one of the twin envelops the other as they grow in the womb at early pregnancy. The poor twin that has been wrapped inside the other will attach itself to the blood vessels in its sibling and feeding off him as a parasite! So the undevelop twin in the body is alive, absorbing nutrients from its host sibling and continues to grow in size!

Sanjay Kumar before the sugery

At the age of 36 back in 1999, Sanjay had been living his life with a huge bulge on his belly, he looked like 9 months pregnant. At that time, he could hardly breathe due to his extremely swollen belly. He went through a surgery to remove the "tumor" which would threaten his life sooner and later.

As the surgeons cut the lump in Sanjay's stomach, gallons of pus gushed out from the lump. Finally, he decided to get rid of the "tumor" in order to lead a more normal life. To the horror of the surgeons operating on the tumor, they found Sanjay's twin sibling! The weird, strange half-formed body of Sanjay's sibling had fully developed limbs, its finger-nails were long signifies that it was still living and growing inside Sanjay at the time of removal.


The deformed twin

For the deformed twin, it could not survive by itself, but through the blood vessels of its brother host, it could acquired nutrients to grow in size. After the sugery, Sanjay explained "Before the operation, life was very tough, but now I'm much better". Sanjay now leads a normal life without the burden of his parasitic twin that feeding off him for as long as 36 years!

June 4, 2009

Living "Sausages"

Watch the video, what would you name these creatures? Don't let your mind run wild!





Those weirdos are known as Spoon worms (they are one of the spoon worm species). Yes, they do look a lot like uncooked sausages, but they are alive. Spoon worms are unsegmented and soft-bodied that live in the sand or mud in the water and they are also marine burrowing creatures. Usually, these worms have a body length of 3 to 15 cm, however, they can grow to as long as 75 cm in some cases.

Spoon worms secrete a lot of sticky mucus which forms a net attaching to the inner wall of its burrow funnel that acts as a filter to trap small marine organisms. Once the net is loaded with food particles, the Spoon worm will then swallow the whole net together with the food particles. After that, it will create another mucus net.



The Spoon worms are a type of delicacy in some countries. For those who have never seen these "sausage-like" creatures before, eating one of them may be a huge challenge just like those challenges in Fear Factor. I have never tried before, and never will.

June 2, 2009

Blood Suckers

First glance at the words "Blood Sucker", many will start to think of vampires or mosquitoes. BUT, I am not going to talk about either of them. The two extreme creatures that I am going to talk about, not only do they have disgusting appearances but are also blood-thirsty creatures.
They are the Fleas, and the Ticks.



Some facts about Fleas

Larva of a Flea. Source: Click Here


  • Flea larva may live on the carpets, or any fabric surfaces.
  • The flea larva actually feeds on the poop of an adult flea besides dead skin debris of animals.
  • Eventually, it will spin itself into a cocoon, and can stay inside for more than a year waiting for a host to arrive.
  • Flea can jump 150 times its body length, which is about 240m high for a human being of 1.6m! In order to attach itself onto its host.
  • The flea has a very poor eyesight, it can only sense its hosts through movement and concentration of carbon dioxide.
  • It can drink blood of up to 15 times its body weight. In conversion, it is approximately 750kg of liquid consumed by a person with 50kg body weight!
  • The poops it produces are rich in nutrients for larvae to grow.
  • One of the best way to get rid of fleas, is the use of vacuum cleaner.

Some facts about Ticks
  • A tick is an eight-legged bug, a relative to spiders.
  • Very similar to fleas, a tick tracks its host by following the trail of carbon dioxide released by the hosts.
  • A tick locates the blood vessels closest to the skin surface of its host, at which it will bite and start leeching for blood.
  • The horrifying fact is that, a tick can drink up to a maximum of 600 times of its body weight of blood! (which is 30,000kg of fluid for a 50kg-person)

A female tick with eggs. Source: Click Here
  • Once latched on a host, a tick may be 'glued' onto the host and suck blood for up to a few days. Until its body weight increases about several hundreds times its original weight!

June 1, 2009

Gosh! What's On Your Eyelashes!

I believe that many people know that there are tiny bugs living in the human hair called 'mites'. Do you know that there are also lots of mites living in the roots of your eyelashes? Don't be surprise, everyone has mites on the eyelashes, including you and me.


Close up view of a Demodicid

The scientific name of these tiny mites is Demodex folliculorum, also known as demodicid. They are very small, only about 0.4mm in length. They live in pores and hair follicles on the face. There are countless of them nesting on our faces!

A female mite will lay about 25 eggs in a hair follicle, which will hatch and mature and move to other follicles. These disgusting mites live head down in a follicle, dead skin is their food source. If there are too many of them living in a single follicle, the hair shaft will fall off, that's one of the reason for your precious eyeslashes falling off!

The white color tips are the tails of the mites, 3 of them!

If these mites are living in the pores on the face, the outcome may be skin disorder or acne formation. Mites have tiny mouth which feed on the dead skin cells. The fortunate thing is that, mites do not poop, as they only have one opening on them which is the mouth.


Don't get freak out, everyone of us have them on our body, not ten, not hundreds, but millions of them!

May 30, 2009

The Leatfcutter Cultivation of Fungus



Brief description:

The Leafcutter ants build their fortress underground. They collect a kind of leaves (non-edible) in order to cultivate a species of fungus in their nest. The fungus has the ability to break down the toxins in the leaves, and in turn the fungus will swell with proteins and sugar. This swollen fungus which are rich in proteins and sugar is the food source of the leafcutter ants.

The ants and the fungus depend on each other for a living. Leafcutter ants see the fungus as a source of food. On the other hand, the fungus depend on the ants to bring in food for them (in this case, the leaves). The fungus also seek protection from the ants against a type of mould that will grow on the fungus and wipe them out.

Interestingly, the ants's body have bacteria to produce an antibiotics against the mould. The antibiotics supresses the growth of mould on their food source in the nest!

May 29, 2009

The Extraordinary Pet

Let's have a discussion on Praying mantis! The reason is, praying mantis is one of my all-time-favourite insects! =) Praying mantis is one of the few insects which can turn and rotate its tiny head very much like a human does. It can turn its head left, right, and even nod its head! Praying mantis is a predator, it preys on living insects, depending on its size. The larger ones can even prey on small lizards or even birds and etc.



They use their strong and spikey forearms to catch their preys. Once caught, they will not loosen their grip, and eat the preys alive. They may sound scary, but they are friends to farmers, their food is usually pests.

The one I am going to talk more about on is the Green Praying Mantis. It resembles a ninja a lot in nature.

Firstly, it is a master in camouflage, the body color it has allow it to blend into the surroundings without being noticed. Secondly, praying mantis' best skill is to ambush. It will usually hide at a corner and wait patiently for its chance. Thirdly, it has a ninja's agility to strike at the speed of lightning at high accuracy!

Here are some of my personal experiences with Praying mantis.

In the past, I used to have a green praying mantis as a family pet. At that time when I caught it in the bushes, it was still a baby mantis I think. We kept it in a glass tank with ample space for it to move around. Most of the time, we let the mantis move around our house under our supervision.

The interesting thing was that the mantis liked to follow our movement. For example, it would follow our fingers, turned its head to look at us whenever it spotted us, and it even followed us when we walked! It liked to be stroked gently on its head and back.

Praying mantis will molt in its life cycle. For our poor mantis, due to our lack of experience in handling. We failed to provide it with a stick that it could stand on during molting. As a result, its legs were deformed during the molting process. We discovered that only on the next day. It was a great pain to see it living the rest of its life with deformed legs, and could no longer run as fast as before. =(




It gets rid of the flies in our house. We would provide it with pre-caught-flies if it failed to capture its prey after several attempts. Praying mantis is fun to look at and it is simply adorable. It may look like a little alien, but it is one insect that you can raise like any other house pet! (dogs, cats, hamsters) Having a dog as pet is not special, raising a Praying mantis is extraordinarily unique and a great experience!

The Young Soul Trapped In An Old Body

Hutchinson-Gilford Progeria Syndrome, commonly known as Progeria or Aging disorder. As its name implies, babies born with this condition start to age at a very tender age and usually die at the age of 13 to 14.




Around the world, there are not many known cases of this disorder, affecting newborns at a rate of about 1 in 8million. Although Progeria is a genetic disorder, it is not inheritable.

Symptoms:
  • The child will have normal appearance in early stage of infancy, symtoms start to surface at the age of 9 to 24 months.
  • Growth delays, the child will have short stature, look smaller than children of the same age.
  • Distinct facial appearences such as small faces, small jaws, huge heads, malformation of teeth, wrinkled skins, baldness.
  • The affected child will develop similar respiratory, arthritic and cardiovascular conditions of an old person at later stage of the disorder.
  • The growth of the affected child seems arrest and fast-forward at the same time in the same body. The child with the age of 10 will resemble the body size of a 3-yr-old, but the child will have the appearance of a 80-yr-old.
There is no treatment proven to be effective against this disorder. Sad to say, patients have difficulty living past the age of 13. There is a rare case of a Progeria patient living till the age of 21. Mentally, the affected child will be at his real age. Physically, he is growing at 8 times faster than normal kids!

Susana Lopez, is the oldest Progeria sufferer, 21-yr-old


Most of the affected children die of complications from the disorder, such as heart attack and stroke.

May 27, 2009

Parents Carrying Babies Around With Them

When you think of spiders, what is your first impression about them?
When you see a scorpion, what will be your first reaction?

Cold-blooded animals are not as cold blooded as they seem. In the nature, there are many which protect their off-springs tenderly. They may have an ugly appearances, but their motherly love is greatness above all!

A female spider carrying a lot of her babies!

"It's so crowded up here >.<"
 

"When I was young, your grandma carried me around. And now, I'll carry all of you on my back, not leaving out any single one."


A mother scorpion carrying her babies lovingly on her back despite her ferocious nature. She will protect her youngs until they are able to hunt for food independently.

"Mommy, do you need a rest?"
"You are not a burden. =) "



Dendrobates minutus female and her baby.

"Mum, will you piggyback me until I can walk on my own?"
"Ofcourse, Dear, the world outside is too dangerous for you right now."
"Mum, am I too heavy for you?"
"Silly child, I won't give up on you no matter what happen."




Camel Spider the Human Flesh Eater?

Have you ever heard of Camel spider or Wind scorpion?

Below is a picture of 2 Camel spiders with some Iraq soldiers.

There are several legends about the Camel spider which make it a horrifying creature!

1. Camel spider is a huge size creature, which feeds on animals and human flesh!!! It has been said that, the creature will inject some venom into the flesh of a sleeping human to numb him, and then happily chew and eat the flesh. The victim will awake with a wide open wound!

2. Camel spider screams as it runs.

3. It is given the name 'Camel' spider because the creature will attack camels and feed on them!!!

4. Camel spider will chase human and it can jump up to 1 metre!


Does the Camel spider freak you out?

The above is all FAKE! They are just legends.

Camel spider is neither a spider not a scorpion, it is grouped under Solifugae, an order of Arachnida. Camel spider and Wind scorpion are the common names.

First of all, Camel spider is not that huge as the one shown in the picture. The photo itself is an eye trickery that exaggerated the size of the creature. Camel spider does not have venom, and it only preys on termites, beetles and other small insects. It will never attack organisms that are larger than it, unless threatened. So forget about Camel spider feeding on camels.


Camel spider DOES NOT scream!

Camel spider is about 12cm with its legs outstretched. It will NOT chase people! This perspection may be due to Camel spider seeking shade in open, therefore it will follow the shadow of a person which gives the impression that it is 'chasing' him. Rest assure, it is just a shadow-seeker, not human-chaser.

Do not get deceived by those exaggerating 'facts'.

May 25, 2009

The Body Invader - Bodyguard for Enemies

I have come across a video clip from National Geographic program which is really interesting. However, the video may look gross to those who hate or have phobia of caterpillars. Watch at your own risk.=)

A wasp had laid its eggs into the body of a catepillar. The larvae hatched and grew inside the catepillar body, feeding on their host's blood. As they grew larger, they broke out from the catepillar skin using their tiny saw-like teeth!

The catepillar is not dead yet, at that moment. The larvae of the wasp then spinned their own cocoons. The poor catepillar will then start to act as a body guard protecting the wasp larvae until it eventually starves to death.

The wasp larvae not only parasitised the catepillar, they manipulated the behaviours of their host to protect them through the pupa stage when they were vulnerable to other predators! The poor catepillar protected its enemies till the end of its life.



May 23, 2009

The Giant living Underground

I believe all of you have seen an earthworm before, but what is the size of the largest earthworm you have ever seen? 5cm? 10cm? Or 20cm? (in length)
In this post, I am going to introduce the world's LARGEST Earthworm - the Giant Gippsland Earthworm! For those who does not know about this species of earthworm, can you have a wild guess of how long will it be in the adult stage? (when stretch out)

a) 30cm?
b) 50cm?
c) 80cm?
d) 100cm?
e) 200cm?

Continue reading to find out the right answer by yourself.

The Giant Gippsland Earthworm is the largest Australian native worm, and it is the largest on earth too. The species name for this giant is Megascolides australis, when it was first discovered in 1870s, it was thought to be a snake!

A Giant Gippsland Earthworm egg
Photographer: Alan Henderson / Source: Museum Victoria

The earthworm has a grayish-pink body, and dark purplish-blue head. This giant earthworm lives deep underground and rarely leaves its moist underground maze, however, heavy rain may flush them out to the soil surface. When stomping on the ground above their hiding place, you could even hear a gurgling sound made by the worms moving quickly away from source of disturbance.

Giant Gippsland Earthworm is listed as endangered species as its natural habitat is disturbed by human settlement. Another situation that accounts for the reduction of the species is their super slow developmental rate and low reproduction rate. After mating, the earthworm will produce one egg sac (about 7cm) which will take up 1year to incubate and hatch. In the egg sac, there is only one baby worm, and it will take years to mature. When hatch, the baby is already 20cm in length.


Do you have the answer now?

Yes, the Giant Gippsland Earthworm normally can grow up to 200cm in length. The longest recorded length is 400cm! Don't freak out if you ever have the chance to witness one, this earthworm is absolutely harmless.

Beverley Van Praagh holding a Giant Gippsland Earthwrom during a Museum Victoria fieldtrip c. 1980. Photographer: Rodney Start / Source: Museum Victoria

May 22, 2009

Ebola Virus

Ebola virus is one of the deadliest viruses in the world, and a cure for which has not yet been discovered. Ebola virus infection is called Ebola hemorrhagic fever (Ebola HF). The virus is named after the Ebola River where the first case of the disease had occurred.

Eboli virus


After the virus infection, there is an incubation period of about 2 to 20 days before the symptoms start to show. At the beginning, an infected person will have fever, muscle aches, headache, weakness, which then followed by diarrhea, vomiting. As the Ebola virus targets the endothelium inside the body, blood vessel walls, organs linings, digestive tract linings will all be damaged from the infection eventually. As a result, patients start to bleed internally and externally.




If a person is detected to have Ebola virus infection, the individual has to be isolated, as Ebola is a highly contagious virus. Among humans, Ebola virus can be transmitted from infected patients to people simply by contacts of body part. (body fluids, skin, mucous membrane) Although this disease is highly transmissible, contacting patients in early stage may not be infected.




To date, there is still no cure for Ebola HF. Medications are given to patients to ease their symptoms. The patients have to depend on their immune systems to fight against the deadly virus. The mortality rate for the disease can be up to 89%, whereby most of the patients die from organs failure.

May 21, 2009

Bone Eating Worm - Osedax

I have come across some interesting articles on the Bone eating worm, and I would like to share with you guys.

This genus with the name of 'Osedax' was discovered in Febrary 2002 at Monterey Bay, Carlifornia. The species was first discovered on decaying whale and it was named after its habit of feeding on bones of animals.


Osedax


This bone eating worm is approximately 1 to 2cm in length. It has pinkish, feathery plumes that act as gills to enable Osedax to acquire oxygen under the sea. The worm itself does not have mouth and stomach, thus it has to rely on a type of bacteria which breaks down fats inside the bone and transfer the nutrients to the worm.

Female worm

Male worm
In the case of mosquitoes, only females suck blood; for this bone eating worm, only the females eat bone. Then, where do the males go?

The most amazing part about the worms is their reproductive system. Grown up females can be around 2cm in sizes, while the males are of microscopic sizes. The males live inside the females! The females and males differ in morphology in an extreme way, the females resemble a flower, while the males' appearance do not change much after larva stage. Sometimes, about 50 to 100 males are living inside one female worm, next to the oviduct. The sperms compete to fertilize the eggs, which will be released at the pinkish feathery top of the female worms.