WHAT ARE MITES?

Mites are an extremely successful group of insect-like invertebrates. Their success is due in part to their microscopic size and also to their ability to thrive in a wide variety of habitats. Most mites prey on animals, including mammals, birds, and other insects. Mites rarely transmit disease directly but, because they often cause intense itching, their bites can serve as entry points for infection. In addition to the effects of their bites, mites can cause allergies that affect breathing, like asthma, or the skin, like eczema. Different types of mites have different effects in humans--effects that often resemble other conditions, like contact dermatitis or simple mosquito bites.

However what type of mites bite human ??

Mites are tiny arthropods that are related to ticks and chiggers. A majority of mites will never come in contact with human beings, but those that do bite a human can affect that individual's health. Most mite bites cause skin irritation and intense itching. The most common types of mites that bite humans are listed below.

Bird Mites


Some mites that normally feed on domestic fowl and wild birds might bite humans when their hosts abandon their nests or die. These mite bites typically produce an extremely itchy rash and are often marked with a small, clear blister. Bird mites don't stay on humans very long.
 

Rodent Mites

The two types of rodent mites that most often bite humans are the tropical rat mite and the house mouse mite. The bite of a house mouse mite produces an itchy, red rash around the bite. The tropical rat mite's bite is quite painful, causing extreme itching and skin irritation
 

Grain Mites

Grain mites often bite humans who are handling grain, hay or dried fruit. This type of mite is particularly common in damp, moldy areas. A grain mite's bite causes rashes and can trigger respiratory problems in some individuals.

Straw-Itch Mites

Straw-itch mites feed on the weevils, grain moths and other insects that infest stored grain. Humans are often bitten when they handle hay, straw, grasses, seeds or leaves where the straw-itch mites are living. Bites will cause an intense, itchy rash.

Scabies Mites

Scabies mites burrow deep into human skin and cause an persistent and very itchy rash. This rash often forms in gray lines around the bite.

 

Comments

Post a Comment

Popular posts from this blog

Vegetable Battery

Image
The energy for the battery comes from the chemical change in the zinc (or other metal) when it dissolves into the acid. The energy does not come from the lemon or potato. The zinc is oxidized inside the lemon, exchanging some of its electrons with the acid in order to reach a lower energy state, and the energy released provides the power. In current practice, zinc is produced by electrowinning of zinc sulfate reduction of zinc with carbon, which requires an energy input. The energy produced in the lemon battery comes from reversing this reaction, recovering some of the energy input during the zinc production.
Read more

Cell Cycle part 2

Image
Now the cell should have double the amount DNA after interphase. The next phase is m-phase. The m-phase consists of mitosis (separation of 1 cell nucleus to 2 nuclei) and cytokinesis (cytoplasmic division or whole cell division). There are 4 steps in mitosis. To help understand this concept, I will explain the structure of a chromosome. A chromosome is formed during mitosis to help in nuclear division. A chromosome has two sides, each side is a copy of the other(interphase), therefore, each side separates into its own nucleus so the new cell has an exact copy of the parent cell's DNA. The first phase is called prophase. During prophase, the chromosomes become visible from chromatin and the nucleolus disappears. The next phase is called metaphase. Here, the chromosomes line up in the center and fibers called spindle fiber attach to the chromosomes centromere from both sides. The next step, anaphase, the spindle fibers pull on the chromosomes where each copy is separated to either s
Read more

How does graphite conduct electricity ?

Image
Graphite can conduct electricity due to the vast electron delocalization ( delocalized electrons are electrons in a molecule, ion or solid metal that are not associated with a single atom or one covalent bond)  within the carbon layers (a phenomenon called aromaticity ). These valence electrons are free to move, so are able to conduct electricity. However, the electricity is primarily conducted within the plane of the layers. The conductive properties of powdered graphite allowed its use as a semiconductor substitute in early carbon microphones.
Read more