The world is big and strange, and the world we live in is composed of many kinds of strange plants and creatures. Today, I would like to introduce the particularly poisonous Aedes albopictus mosquito in the insect world and the dragonfly, the insect catcher with the most eyes.
<h2 class = "pgc-h-arrow-right" > particularly poisonous mosquitoes in the insect kingdom</h2>
Also known as Aedes albopictus mosquitoes, Aedes albopictus belongs to the family Aedes longhornidae, medium-sized black mosquitoes with markings formed by white scales, Aedes albopictus originated in Southeast Asia and is a common mosquito species in Southeast Asia and China. They originated in Asia and have now spread to more than 70 countries around the world. This mosquito is the most poisonous mosquito in the world and is a vector of important viruses.
Aedes albopictus is a small and medium-sized species of black mosquito with silvery-white markings. On the mid-thorax shield there is a mid-white longitudinal stripe that splits in front of the small shield that extends backwards to the level of the wing base. Posterior tarsal segments 1-4 have a basal white ring, and the terminal segment is completely white. There are basal vaginal bands on the back of the abdomen at 2-6 segments.
Aedes albopictus prefers to inhabit dark and airy places, such as bedrooms, living rooms and kitchen sinks. The grass around the house, bamboo forests, grape racks, the inner walls of tanks, etc., are also places where they like to stay and stay for a long time. FemaleSpeedes albopictus prefer to suck blood and suck blood throughout the day, one or two hours before sunrise and two or three hours before sunset, which is the peak of their activity. Not only mammals, but also birds suck up blood, and the range of host animals is very wide. It can transmit many pathogens, including dengue, Ross River virus, and West Nile virus. Aedes albopictus breeds in and around settlements in containers (such as tanks, tanks, pots, bowls, broken bottles, etc.) and plant containers (such as bamboo tubes, tree holes, leaf axils, etc.) and small accumulation of water such as stone caves, and tire water is the most common breeding place for this Aedes mosquito.
The eggs of Aedes albopictus have strong cold resistance and vitality, and are easily carried and transmitted. They are very fierce and aggressive. Aedes albopictus is an important vector of dengue fever, the disease has been found for more than 200 years, mainly in tropical and subtropical regions, is the world's most widely distributed, the largest number of patients, the most serious pest-borne infectious diseases.
Aedes albopictus bites people particularly fiercely, after being bitten the skin will become extremely itchy, there will also be skin redness and swelling, it is likely that there will be symptoms of local dermatitis, and even cause systemic dermatitis, and after scratching, itching infection will occur. Being bitten by the white-striped Aedes mosquito is definitely not a very pleasant thing, so the prevention of mosquitoes in summer is a very important thing.
Prevention and control measures
The integrated management methods of mosquitoes include environmental management, biological control, chemical control, regulatory control and genetic control. The control of Aedes albopictus mainly adopts environmental control based on the treatment of breeding sites, and when there is an outbreak of dengue fever, chemical control and environmental control measures are taken. Environmental management is mainly to remove mosquito breeding sites, it not only reduces the mosquito spawning environment to control its adult mosquito density, and has many advantages such as environmental protection and no drug resistance.
Chemical control is through the breeding of drugs, the direct spraying of adult mosquitoes of Aedes albopictus has played a better role, but in the investment of larger manpower, material resources, financial resources at the same time caused different degrees of pollution to the environment, the application of chemical drugs also makes mosquitoes resistant. The application of anti-mosquito gates can benefit from long-term benefits with only one-time investment, saving manpower, material resources and financial resources while protecting the environment, and playing a conceptual change in mosquito control work. With the rapid development of the economy, people's health awareness is gradually increasing, and the government should increase investment in infrastructure to promote the sustainable development of mosquito control.
Dengue fever cannot be directly transmitted between people and is transmitted by insect vectors, so in the prevention of dengue fever, dengue disease incidence monitoring and control to eliminate mosquito vectors is still the most effective preventive measure at present. Monitoring of Aedes mosquitoes is an important means of effectively warning of the occurrence of dengue fever and controlling the dengue epidemic. For a long time, the density of adult Aedes mosquitoes has been investigated, and Aedes aegypti has mainly used indoor habitat methods. Aedes albopictus mainly uses the human trap method. But both methods have shortcomings that can cause mosquito predators to be bitten and infected with the virus. In addition, as long as the prevention and control of Aedes albopictus pays attention to it, the system is implemented, the measures are appropriate, and the persistence is persistent, it can be controlled to the extent of insufficient harm.
<h2 class="pgc-h-arrow-right" > animal with the most eyes in the world</h2>
Generally speaking, our common animals have two eyes, from flying in the sky to running on the ground and swimming in the water, including the fish we eat, shrimp, etc. are two eyes, while our common dragonflies have 280,000 eye crystals, known as the animal with the most eyes in the world, everyone should not think of it is a dragonfly.
Dragonflies are still very common in our daily lives, and I believe that many people have the experience of catching dragonflies when they are young, and when they catch dragonflies, I don't know if you have noticed, no matter which direction you catch dragonflies from, you can always be easily escaped by them, that is because dragonflies have many pairs of eyes.
Dragonfly's vision is also very good in the animal kingdom, because the dragonfly's compound eyes are very prominent, and each compound eye is composed of 280,000 eye crystals, so the dragonfly can easily see the upper, lower, front and back directions without changing any direction, and the dragonfly's flight ability is also very strong, so it is not so easy to be captured.
Dragonflies have always been known as the masters of the insect catching world, that is because the wings of dragonflies are very powerful, and the vision is also very clear, not only can well distinguish the direction can also fly up to 10 meters per second, and sometimes can fly backwards, which is a skill that many flying animals do not have. Dragonflies are the flying champions of the insect world.