Thrombiculosis in cats: infection with red mites

• The family of acariform mites (Acariformes), which includes several tens of thousands of species of mites.
• The genus of red mites (Trombidium), which includes about 30 species of mites.
• The species Trombidium holosericeum is the common red beetle.
• Any tick that appears red when you find it.

The first three options are derivatives of each other and are related.
The red beetle family includes thousands of different species that can have significant differences in both appearance and lifestyle. In the context of this article, we will consider the genus Trombidium and one of its most common species in Russia - the common red beetle (Trombidium holosericeum). If you are not sure about the species of the parasite and simply found a red insect similar to a tick, compare the found pest also with the taiga tick

, European forest and
elk ticks
. In this case, determining the species is important, since these parasites, depending on the species, can be more or less dangerous to humans and domestic animals, and may or may not carry any diseases. If an insect looks more like one of these three species, study information about it. If the pest looks exactly like the red beetle in the scientific understanding of this species, you will find all the necessary information below.

Description and appearance

The red color, from which the tick gets its name, is not the only distinctive feature of this parasite. More indicative are the delicate hairs with a thickened base that cover the body of the red mite, making its cover look like velvet, which is why the pest is also called the velvet mite. All bristles grow at the same angle relative to the body, which significantly increases the maneuverability of the red beetle.

The tick is distinguished by its specially constructed eyes: they are located on stalks. The organ of vision is primitive; the eyes are only capable of reacting to the intensity of light.

Appearance

The length of an adult tick with a red “butt” reaches 4 millimeters. Like other arachnids, the red beetle has 4 pairs of legs.

Red flat mite larvae are not much different from adults, except for size. Their body is not divided into segments, but resembles a bag. In a hungry larva, folds are clearly visible on it, which gradually straighten as they become saturated, which allows the parasite to consume more blood or hemolymph. The color intensity increases as the larva becomes saturated. The larva has fewer legs - six. As it turns into a sexually mature individual, another pair appears.

The function of touch is performed by two long bristles on the back - sensilla, which help the tick to detect its future victim.

The red beetle's paws consist of seven segments and end with claws that help the parasite cling to the fur or clothing of its victim. There is an anus on the abdomen.

Ways to fight

There are special ways to combat red spider mites and folk remedies, the effectiveness of which has been confirmed by the practice of many gardeners. Whatever route of destruction of arthropods is chosen, it is important to remember that it adapts to the active ingredients of the drugs and is highly resistant to them. Therefore, a single processing will not be enough.

To enhance the effect, it is recommended to combine products, alternating them with each other. Before applying them to plants, it is recommended to clean the leaves and stems with a cloth and soapy water. Although this will not kill the tick, it will significantly reduce its numbers.

Red mites on indoor plants can move from them to window frames and hide in the cracks of the window sill. Therefore, re-infection is not uncommon.

Special means

As soon as the first signs of red spider mite activity are noticed, it is recommended to apply Fitoverm three times. The time between procedures should be a week. In this case, it is necessary to treat not only the affected plant, but also all those nearby, because there is a high probability that the mite already lives on them. Particular attention should be paid to the underside of the leaves, each internode, as well as the buds located at the top of each shoot.

You can also use other means:

• "Aktellik";
• "Aktofit";
• "Borneo";
• "Vermitek";
• "Kleschevit";
• "Sunmite", etc.

Regardless of the choice of product, one treatment will not be enough. It must be repeated at least 3 times to destroy the entire population, including young individuals and larvae.

You can also use environmental control options, for example, introducing other mites from the genera Phytoseiulus and Neoseiulus. Being predators, they do not have a negative effect on plants, but they quickly destroy their red relatives.

Folk remedies

Gardeners and flower growers often use folk remedies that help exterminate red spider mites without the use of chemicals:

1. Chop 15 g of onions and add a liter of water. Leave for 7 hours with the lid closed.
2. Cut 30 g of dandelion roots and add a liter of water. Leave in a warm place for a couple of hours.
3. Passed through a press or finely chopped garlic (150–200 g), pour a liter of water and keep in a sealed container for 5 days. Use the resulting solution as a concentrate of 5 ml per 1 liter of water.

As with the use of chemicals, treatment must be carried out repeatedly.

Preventive measures

Prevention of red spider mite infection involves maintaining high air humidity in the room where the flowers grow. You can hang a soaked towel on the heating source and place containers of water next to the plants. But it will be much easier to purchase a special device - an air humidifier. Also, flowers should be periodically sprayed with a hand sprayer or “bathed” under a running shower.

The red tick is voracious and dangerous. To keep plants healthy and pleasing to the eye, you need to constantly inspect them. If a pest is spotted, treatment should be carried out as soon as possible.

Reproduction and life cycle of the red mite

Red heifers have a rather complex development cycle. Like all ticks, they are oviparous. Egg laying occurs in autumn. The velvet mite lays up to 50 eggs per day in the soil, which totals up to 900 eggs over the entire breeding period.

The incubation period lasts 1-2 months. The prelarva (first stage) released from the egg does not actively feed or move. It takes the substances necessary for life from the yolk reserve in the intestines. Within a week, the larva feeds independently on the hemolymph of insects and arachnids.

After the next resting stage (pupa-shaped), the larva in July-August becomes a deutonymph - as predatory as an adult red mite. Some time later, the next dormant stage begins, ending with the appearance of adults. After the final transformation, the entire reproduction cycle is repeated again.

In adults, the differences in the reproductive apparatus are insignificantly expressed. Insemination occurs spermatrophically - the male attaches the capsule with the sperm contained in it to the female’s body or inserts it inside her through the surface tissues.

Life cycle

Prevention

To prevent red mite infestation of plants, take the following measures:

• in the fall, remove fallen leaves from under the tree trunks, as pest eggs may remain there;
• remove old bark with a metal brush, thereby removing areas suitable for laying eggs;
• inspect plant leaves more often to detect signs of red mite infestation in time and prevent the colony from growing;
• spraying with water - many pests are afraid of moisture, so they do not settle on frequently irrigated plants;
• regularly treat gardens, vegetable gardens and indoor plants with acaricides, especially in hot and dry weather: such conditions are ideal for the active reproduction of pests.

Feeding features of the red tick

Red beetle mites mainly eat insects, their eggs and larvae. Cannibalism is quite common.

The larvae are especially voracious, absorbing 2-3 times more food than an adult insect.

The red heifer feeds on fluids and tissues of the body, and not specifically blood, although physiologically it can digest it.

Thus, the red tick is not a blood-sucking parasite. However, it is a predator, as its diet includes living organisms.

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Is the velvet mite dangerous for humans?

The red tick is dangerous to humans and animals only in the fall at the larval stage. She is very aggressive and attacks people. This can also be fraught with serious diseases, for example, skin dermatitis or thrombidiosis.

In rare cases, the red beetle tick can cause a dangerous natural focal disease - tsutsugamushi fever, scrub typhus, Japanese river fever. These diseases lead to death in 30% of cases.

However, many experts believe that fears about the little red tick are greatly exaggerated. Much more harm is caused by chemicals and insecticides used to combat these insects.

Symptoms of the lesion

You can notice the presence of red apple mites on trees by the appearance of numerous light spots on the affected leaves. They are especially noticeable near the veins. The leaves themselves take on a gray-red color and look as if they are dusted with road dust.

Flowers, shoots, fruits, and succulent shoots can be damaged by the pest. The larvae live and feed on the bottom of the leaves.

Upon careful inspection of fruit trees, it is not difficult to identify mite damage.

Mites infestation begins from the inside of the tree crown, then they move higher along the trunk. A severely affected plant may take on a pinkish or reddish hue. Damage and leaf fall can cause the tree to lose up to 40% of its chlorophyll.

Signs of a tick bite and first aid

The main signs of a bite: an itchy red spot followed by the appearance of a nodule (papule) measuring 3 mm. The nodule gradually increases in diameter and disappears on the 8th day. A dark, very itchy spot appears in place of the papule. It remains on the body for about 2 weeks. When scratching, an ulcer may form. In addition, the wound can easily become infected.

Antihistamines

First aid:

• thoroughly rinse the bite site;
• treat the affected area with an antiseptic;
• in case of an allergic reaction, take antihistamines;
• use antipruritic and painkillers;
• make lotions using decoctions of chamomile, calendula, and celandine.

Therapy for tick-borne rickettsiosis

Treatment is carried out in a hospital, in the infectious diseases department. On average, the treatment course before discharge is 10 days. Patients are prescribed bed rest, nutritious meals, and plenty of fluids. The diet should contain a sufficient amount of protein. Clinical recommendations include:

1. To eliminate the causative agent of infection, tetracycline antibiotics or levomecitin are prescribed. Minimum course – 3 days. The treatment regimen and dosage are determined by the doctor. In most cases, the patient takes Doxycycline with a daily dosage of 100–200 mg or Tetracycline. If the patient is in serious condition and is not able to independently take the tablet form of the drug, the medicine is administered intravenously. Antibiotic therapy continues until body temperature normalizes.
2. To ease the course of the disease, antipyretic drugs are used.
3. According to indications, therapy is supplemented with cardiovascular drugs, glucocorticosteroids, and antihistamines.
4. For detoxification, droppers are placed with a solution of glucose and ascorbic acid.

Types of parasitism

As noted above, red beetle larvae are temporary, obligate external parasites, and if they feed on the integument of small vertebrates, they suck out blood and tissue dissolution products. However, this is only one side of the coin: studies have shown that larvae of red beetles of different species are characterized by different types of parasitism.

Firstly, this is external parasitism on the integument, with long-term feeding, like ixodid ticks. It is in this case that a full-fledged stylostome is formed, and a strong inflammatory reaction develops when bitten. This type of parasitism is characteristic of most trombiculids.

Secondly, this is intracavitary parasitism in the respiratory tract of mammals and birds. At the same time, the mortality rate of red tick larvae decreases significantly due to favorable microclimatic conditions inside the host body.

Thirdly, some red beetles that feed on amphibians (frogs, toads, salamanders) are characterized by immersion under the skin of the host.

And finally, fourthly, partial immersion in the host’s skin and the formation of a kind of pockets. This type of parasitism is also widespread among red beetles, and it is characterized by minor foci of inflammation, since the depth of immersion of the oral organs and stylostome into the integument of the host is insignificant.

Such a variety of parasitic adaptations once again indicates a high level of adaptation of red beetles, as parasites, to external factors and the ability to feed on all groups of vertebrate animals.