Pest Meaning – Pest is a term that describes an animal, plant, or parasite that bites or stings. It is also a synonym for plague. The term pest is a compound noun, so there are many ways to use it. Here are some common examples. Pests can be parasitic insects, animals, or plants that attack wood and destroy homes.
a parasitic insect
Parasitic insects are insects that live and develop inside another insect. They usually eat the host’s internal organs and fluids and lay their eggs inside it. Once the parasitoid larva has grown to adulthood, it will emerge and kill the host. While many parasitoids are beneficial to humans, some are not. The best way to control these pests is to introduce a predator to control the host’s population.
Many species of parasitic insects feed on a variety of hosts. The tachinid Compsilura concinnata, for example, has been successfully reared from more than 100 host species and three orders. Members of other families are more specialized and attack multiple host families. For example, the Mexican bean beetle is a major pest in North America, and the chalcid wasp parasitizes its larvae.
Most parasitoids attack eggs and early larvae and pupae. There are a few parasitoids that attack highly mobile adult insects, but these are rare. They are more difficult to control and less profitable. The Euphorinae are one of the few groups that attack the adult stage. In addition, some species of Tachinidae have been observed to oviposit through the armor of flea beetles.
Parasitic insects can be both beneficial and harmful to humans. In many cases, they are beneficial to humans and can help in the control of other pests. However, the majority of pests are parasitic insects that live in the host during their life cycle. In addition to these pests, most beneficial insects that live in our grain production systems are parasitoids.
an animal that bites or stings
There are many animals that can bite or sting humans. There are mammals, arthropods, and even marine animals. All of these types of animals can be deadly, and their bites can cause serious injury. A quick, simple way to avoid a sting is to avoid contact with the animal.
A sting is a piercing organ that is used by an animal to inject venom. Most stinging animals and plants have a stinger, which is a sharp organ that penetrates the skin. Depending on the species, the stinger may be sharp or smooth.
If you’ve been bitten by an animal, it’s important to seek medical attention right away. Most animal bites will end up as a wound, but not all of them will be the same. Some bites will only penetrate a few layers of skin. These wounds are called scrapes or scratches. However, others will go through the entire skin and reach the muscle or fat beneath. A puncture wound will also go through the skin, but it will be narrower and deeper than a cut.
Many animals that bite or sting can cause severe pain. Depending on the species and the type of venom, some bites will only cause minor irritation, but others can cause severe allergic reactions and require medical attention. The symptoms can range from a tiny itching welt to a large area of inflamed skin.
a plant that destroys wood
There are several different kinds of fungi that can destroy wood in trees. Typically, they attack the sapwood and central core of the tree. They can cause significant damage in a few months or years, depending on the type of fungi and the conditions in which they grow. When they do, they reduce the strength of the wood by consuming its major cell wall components, cellulose and hemicellulose. Depending on the severity of the decay, a tree may lose up to 90% of its strength in a few months or years.
Wood decay is caused by minute fungi called ascomycetes. These fungi produce microscopic threads that attack the wood fiber. They require significant moisture to grow and decay wood. Thus, dry rot is not a good term for it. Several factors can reduce the extent of wood decay in trees. One of the most important is pruning. Proper pruning of young trees helps promote sound structural integrity, and removing large limbs from older trees reduces the need to remove large portions of wood. Another factor that reduces wood decay is the reduction of the amount of exposed heartwood.
Among the wood decay fungi, white rot fungus can be identified by its distinctive fruiting bodies. It often grows near wounds in bark or branch scars. Other common sites where it invades trees are root crowns and surface anchor roots. In addition, it can also cause heart rot in some woody species.