What is a tick, an insect? What do ticks look like?

Overview: Ticks have the following three characteristics, which are different from other insects and mites: First, the dorsal and ventral body is flattened, sac-shaped, epidermatose, without head, thorax and abdomen, and is usually divided into two parts: prosthetic head and body.

The second is 3 pairs of larval feet, 4 pairs of nymph and adult tick feet. Third, the infraoral plate is located on the ventral surface of the chelicerae in front of the middle of the prosthetic head, and there are several rows of inverted counterspurs.

Ticks are very diverse and widely distributed, many of which are parasitic on humans, animals and plants, and are closely related to humans. Ticks parasitic on the human body suck human blood through stinging, causing allergies, and spreading forest encephalitis, hemorrhagic fever, Lyme disease, relapsing fever, and seriously endangering human health.

Morphological characteristics: Adult: oval-shaped, ventral dorsal flattened, slightly raised dorsal back, body length 2 10 mm; After saturation, it swells like red beans or castor beans, and the largest ones can be up to 30mm long. The adult body is divided into two parts: a prosthetic head and a body.

1.Prosthetic: located in the anterior part of the body. The Ixodes prosthetic head is located at the front end and is visible from the back. The prosthetic head of the soft tick is located on the ventral surface of the anterior part of the body, but the back is not visible.

2.Torso: symmetrical on both sides, narrow in front and wide in return. The chitin that makes up the body surface is divided into thick and soft, so it can be divided into hard ticks and soft ticks.

Life history: The life history of a tick consists of four stages: egg, larva, nymph, and adult. Ixodes ticks have only one stage of nymphs and metamorphose into adults after sucking enough blood. The nymphs of the soft ticks go through 1 to 4 stages, depending on the species and the living conditions.

The time required for Ixodes ticks to complete a life cycle ranges from 2 months to 3 years, and most ticks take six months to two years.

The lifespan of Ixodes ticks ranges from 1 month to tens of months, and the adult worms of Ixodes ticks can generally live for 5-6 years to decades due to multiple blood sucking and multiple egg laying. There is a phenomenon of changing hosts in the tick's re-life history.

Habits. Ixodes ticks mostly live in forests, shrubs and open pastures, grasslands, mountain soils, etc., while soft ticks mostly inhabit poultry and livestock pens, wild animal burrows, bird nests and human settlements. Soft ticks have a shorter blood-sucking time and only crawl onto the host when they need to suck blood. Ixodes ticks suck blood for a long time, and generally do not detach from the host except for molting and laying eggs during the life cycle, and some species still attach to the host during the molting stage.

Ixodes ticks are generally active during the day, but the rhythm varies depending on the species.

Ticks have the phenomenon of changing hosts in their life history, and changing hosts is very important for ticks to transmit some diseases that cannot be transmitted through eggs, because ticks only suck blood once in a worm stage, and only by changing hosts at different insect stages can they play a role in transmitting pathogens.

Ticks have appeared everywhere since summer, and serious infections can be life-threatening, so you must be especially careful when you go out. So what exactly is a tick? What kind of worm is a tick?

What exactly is a tick.

Ticks and mites belong to the same type of parasites, and lice in human hair and cattle also belong to this category.

Ticks are very small, dormant on the grass and plants of shallow hills, and are only as small as Zhisuihui seeds when they are not sucking blood, but they can be the size of soybeans or even larger after sucking blood.

Because it feeds on animal blood, it often carries a variety of viruses from animals.

What kind of worm is a tick?

Ticks are also called wall-hugging lice, commonly known as grass chops, grass bezies, cattle lice, and grass ticks. In Henan, where there are a lot of ticks, everyone is afraid of ticks.

Because ticks not only suck human blood, but also burrow into people's **, and then the virus carried by the tick will infect people with "invisible dermatomosis".

After contracting this disease, the severe ones die, and the mild ones are paralyzed, and it is difficult to cure.

Ticks (pronounced pí) insects, commonly known as grass crawlers, belong to the parasitic order and the general family of ticks. 1.Environmental prevention and control In grassland areas, pasture rotation and pasture isolation are adopted, livestock pens are cleaned up, and holes and caulks are plugged to prevent tick breeding; Hunt rodents.

2.Chemical control Tick habitat and wintering places can be sprayed with bethion, chlorpyrifos, cypermethrin, etc., and regular medicated baths can be carried out on livestock to kill ticks. Use aerosols to kill ticks in forested areas.

The addition of extrasexual hormones and aggregate hormones to the insecticide can attract ticks and improve the killing effect.

3.Biological control Beauveria bassiana, Metarhizium aeruginosa and Aspergillus fumigatus have a lethal effect on ticks. Jumping wasps lay eggs in the tick's body, and when they develop into adults, the tick dies.

4.Personal protection Wear protective clothing when entering tick-infested areas, and tighten the cuffs, cuffs and neckline. Apply a repellent (DEET, DEET, Volatile Oil) to the exposed area, or soak the clothing with a repellent. Check each other when leaving, and do not take ticks out of the endemic area. ”

Principles of exoparasite deworming:

1.A two-pronged approach, in which dogs and the environment are dewormed at the same time.

2.Anthelmintic agents are toxic, please follow the instructions of the veterinarian to avoid poisoning or ineffectiveness.

The expulsion method is: if there are only a few parasites, they can be directly picked up and killed with a camera clamp after smearing the insect infestation first; If the quantity is large, you can use asuntol (cattle escape) or negcwon (pig friend), dew vine essence 2% rubbing or spraying.

Or use the above three medicines, with the Wenzhi Fiber water medicated bath, 3 5 minutes each time, and then rinse with water.

Ticks are parasites. Ticks belong to the parasitic order and the general family of ticks, and the adults have a shield with strong chitinization on the back of the body, commonly known as hard ticks, belonging to the hard tick family, and those without a shield are commonly known as soft ticks, which belong to the soft tick family. The development process of ticks is divided into four stages: egg, larva, nymph and adult.

Ticks: More than 800 species have been found worldwide, including about 700 species of Ixodes family, about 150 species of Lycoideae, and 1 species of Natosidae (only in Europe). About 100 species of Ixodes and 10 species of Ixodes have been recorded in China.

The body is oval, the ventral dorsal is flattened when not sucking blood, the back is slightly raised, and the adult body is 2 10 mm long; After saturation, it swells like red beans or castor beans, and the largest ones can be up to 30mm long. Leather on the surface, or with a chitinized shield on the back. The body of the insect is divided into two parts: the jaw and the body.

Ticks belong to the parasitic order Mites, the family Ticks. Adults have a strong chitinized shield on the back of the body, commonly known as Ixodes dyes, belonging to the Ixodes family; Those without shields, commonly known as soft ticks, belong to the family Soft Ticks. If found, pay attention to timely prevention and treatment, and go to the hospital for medical treatment.

Ticks are blood-sucking insects, some ticks are also poisonous, and they are very harmful to the body.

What is a tick – recognize this common parasite

1. A basic overview of ticks

Ticks (ixodida), also known as ticks in the family Tickidae, are a common class of parasites that mainly inhabit mammals, birds, and reptiles. They are smaller in size, usually less than 1 centimeter, but developed ticks can weigh hundreds of times as much. Ticks usually live on their hosts and draw blood as their main mode of nutrition.

The harm caused by ticks to the health of the host is mainly due to the fact that they can transmit a variety of diseases, such as brucellosis, island fever, Lyme disease, etc. In addition, the tick itself also produces some hormones and toxins that adversely affect the host's body.

2. Classification and characteristics of ticks

Ticks belong to the phylum Arthropods, class Parasites, and Tickidae. Depending on their morphology and habits, ticks can be divided into two categories: hard ticks and soft ticks.

Ixodes ticks are ticks with hard shells that are generally the main vector for virus transmission. Their mouthparts can penetrate the skin through the host's ** and suck blood.

Soft ticks have relatively soft shells and generally live in more humid environments. Their mouthparts are shorter than those of ticks and can only bite through the surface of the host, and cannot fully penetrate into the layer.

3. The life cycle and reproduction of ticks

The life cycle of a tick consists of four stages: egg, larva, nymph, and adult. Ticks reproduce when they parasitize on their hosts and feed on their blood.

Tick mating occurs mainly in the host, more commonly in mammals and birds. After successful mating, the eggs in the female tick's body will lay after a certain amount of time.

After the tick lays eggs, it usually produces a large number of eggs in leaves, grasses and other places, and through genetic manipulation procedures such as hatching, grasping and molting, it successively develops into different stages of development such as nymphs, larvae, and adults, and finally completes the entire reproductive process.

4. Tick control measures

In terms of tick control, a variety of means such as chemical agents, physical technology, and biotechnology can be used. Among them, chemical preparation methods are more common, including spraying agents, insecticide films, drugs that block tick reproduction, and so on.

At the same time, we can also take some physical and biological measures, such as regular cleaning of leaves and grass, strengthening pet application and tick prevention, etc., to prevent the harm of tick parasitism.

Summary

As a common parasite, ticks have caused great harm to the human body, animals and the ecological environment. Therefore, in daily life, attention should be paid to taking scientific precautions and measures to protect our health and life.