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Stinger

life science Maturity 9-11 Next article →

A stinger is a sharp organ used by many animals.

Waspstinger1658-2
Waspstinger1658-2

It works by piercing the skin of another animal. This allows the creature to inject venom into the target. Most stingers are found at the rear of the animal. Some animals like scorpions also use a stinger. Even a beetle called Onychocerus albitarsis can sting. This beetle uses its antennae to deliver its venom.

Vespula germanica SEM Sting 01
Vespula germanica SEM Sting 01

Most insects can pull their stinger out after use. However, a few species might leave them behind.

How a sting works can be quite complex. Many bees and wasps have two different poison glands. One gland makes a toxin that contains formic acid. The other gland makes an alkaline neurotoxin. These two liquids are mild when they act alone. They become very strong when they combine during a sting. This combination causes a lot of irritation.

ScorpionBarb
ScorpionBarb

Some wasps like Polistes versicolor use a chemical called 5-HT. This chemical helps cause pain. It also helps spread paralyzing venom to the body. This makes the target stop moving very quickly.

Scientists have studied how these stingers work for a long time. Researchers like John H. Welsh and Carolyn S. Batty studied venom. They looked at how chemicals like 5-HT work in arthropods. This research was shared in a 1963 study. They found how different parts of the body hold venom. These studies help us understand the science of stings. Knowing about these chemicals helps us understand how animals defend themselves.

There are many different types of stingers in nature. There are about 20,000 species of bees in the world. Only about six species of honeybees have barbed stingers. These barbs make it hard to pull the stinger out. Most wasps have smooth stingers instead. Two wasp species, Polybia rejecta and Synoeca surinama, have barbs. Most other stinging insects can sting many times. Honeybees are different because their barbs can kill them.

ScorpionBarb
ScorpionBarb

This happens when they sting mammals or birds.

Stingers are not just found on insects. Other animals have parts that work in a similar way. A stingray uses a part called a dermal denticle. A male platypus has venomous spurs on its back legs. Jellyfish use special tentacles called cnidocytes to sting.

Vespula germanica SEM Sting 01
Vespula germanica SEM Sting 01

It is easy to confuse stings with bites. Bites often introduce saliva or germs into the body. A sting is mainly about the venom being injected. Both can cause skin to swell or itch. Understanding these differences helps us know how animals interact.

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File:Waspstinger1658-2.jpg
Waspstinger1658-2.jpg
File:Vespula germanica SEM Sting 01.jpg
Vespula germanica SEM Sting 01.jpg
File:ScorpionBarb.jpg
ScorpionBarb.jpg
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