recently
A neighbor in Jieyang was bitten by a small bug
Subsequently, he was paralyzed and fell into shock
The situation is critical
This time the biting protagonist
It has been reported many times before
Red fire ants
That day
After the man was bitten in the grass
Multiple discomforts in the body,
Was rushed to hospital
"At first the feet were itchy and itchy
Within a few seconds, the whole body was blistering, and the whole body seemed to be on fire
Numb from the feet to the head
My eyes couldn't be opened, and my whole body was paralyzed..."
Fortunately, the medical treatment was sent in time
The man is currently discharged from the hospital
After the incident
Local authorities have also conducted sanitize of the site
Zhiduo D
The red fire ant, also known as the fire ant, is named after the burning sensation that occurs after being stung by it. It is very aggressive, once it is alarmed, it will chase and bite, and the local skin after being bitten will form erythema, blisters, hard swelling, and itchy feeling.
The venom of red fire ants contains a small amount of water-soluble protein and other substances, which can cause anaphylactic reactions in a small number of people with allergic constitutions, and in severe cases, it causes anaphylactic shock, such as difficulty breathing, dizziness and fatigue, which can lead to death.
Dear neighbors
When you're out and about, be sure to protect yourself
If you see a small raised mound on the road
Be sure to stay away!
Don't fiddle!
It is understood
On the mainland, the red fire ant is an invasive species
Except for the red fire ant
Other invasive alien species are also worthy of vigilance
Where did they come from?
By what means is it transmitted?
In the face of invasive alien species,
How can we improve our discernment and processing skills?
Let's take a look at it with Xiaobian
The elderly larvae of the grassland nightcrawl harm the male ears
"Like a quilt covered to suffocate a tree"
"Invasive alien species spread very quickly, like fires. It would be easy to extinguish it when there was a small flame, but once it spreads, there is nothing that can be done to cure it. ”
Li Yongtao, dean of the College of Resources and Environment of South China Agricultural University and a second-level professor, told reporters that in recent years, the team of the college has undertaken a series of major invasive alien harmful species investigation and control work of the Ministry of Agriculture and Rural Affairs, the Department of Agriculture and Rural Affairs of Guangdong Province and various parts of the province, mainly including four categories of harmful and invasive plants, insects, pests and diseases and aquatic organisms.
"Through grid surveys in western Guangdong, northern Guangdong, the Pearl River Delta and eastern Guangdong, we have a clear portrayal and basic understanding of the occurrence, species, distribution areas, frequency, transmission routes and hazards of invasive alien harmful species in the province."
According to the latest statistics, more than 660 kinds of invasive alien species have been found in the country, covering a wide range of ecosystems such as plants, aquatic animals and pests and diseases.
Among them, the invasive plants that are familiar to us and have a greater impact are virilblade, ghost needle grass, water hyacinth, purple-stemmed zelan, Canadian yellow flower, etc.; Invasive aquatic animals such as Fushou snails, bullfrogs, Brazilian tortoises and recently highly publicized "strange fish" alligator eels; Invasive pests and diseases such as red fire ants, grassland moths, pine wood nematodes, etc.
Most of these invasive harmful species originate from the Americas, which are thousands of miles away from the mainland, and their reproductive ability is strong and there is no natural predator restriction after invading the mainland, causing more serious harm.
According to reports, the harm of harmful invasive species is mainly manifested in:
Destroying local ecosystems and affecting biodiversity, such as carnivorous alligator eels that can prey on a variety of small fish species around the living waters;
2. Encroaching on crops, cash crops living space, nutrients or feeding on crops, spreading various destructive diseases to reduce industrial and agricultural production, such as widely spreading velamame, grassland moth and pine wood nematodes;
Direct or indirect harm to human health, such as red fire ant bites, serious can cause shock death.
"Invasive plants such as vinifera are also green, hidden in a large green area that is difficult to distinguish with the naked eye. The biggest harm of this plant is that it likes to cover and wrap around various fruit trees, not only competing with the fruit trees for water, nutrients and light, but also very dense, like a quilt covering the fruit trees, so that the fruit trees suffocate. Li Yongtao said.
At present, there are more than 100 species that are seriously endangered
Qi Guojun, director of the Agricultural Biosecurity Research Office of the Institute of Plant Protection of guangdong Academy of Agricultural Sciences, has long been engaged in the monitoring, early warning and prevention and control technology research of major invasive alien organisms such as red fire ants, he said: "The mainland is one of the countries most affected by alien invasion in the world, and there are currently more than 100 kinds of large-scale occurrences and serious harms. ”
Li Yongtao said: "Like the Fushou snail, it is also an invasive species that is currently seriously harmful, and it is also necessary to be vigilant. Fushou snail used to be an aquatic organism introduced from the mainland, but because of its bad taste, it basically withdrew from people's 'recipes'; now, the large-scale reproduction of Fushou snail poses a relatively large threat to rice production, which will bite the root system of rice and reduce rice production. ”
Li Yongtao introduced that there are also some aquatic organisms, such as "scavenger" fish, tilapia, bullfrogs, etc., because of their tenacious vitality and lack of natural enemies, they also reproduce rapidly in the wild. "The vitality of the 'scavengers' is the most tenacious, even if they are exposed to the sun on land, they can survive, and this fish lacks natural enemies in the country, squeezing out the living space of native fish."
Spread with seedlings, floods, and wind intrusions
In addition to strong survivability, some harmful invasive species have special transmission methods, which is also an important reason why they are difficult to be cured.
Qi Guojun told reporters that the main ways of spreading red fire ants are natural spread and human transmission. Natural spread includes winged breeding ants, flood dispersal and nest relocation.
Mature nests will produce winged breeding ants throughout the year, the conditions are suitable for marriage and flight, winged female ants and male ants will be in high altitude marriage and mating, after fertilization of the queen to find a suitable nesting place to establish a "kingdom", if the wind assists can spread farther.
In addition, in some areas, after a flood, the red fire ant colony will form an "ant raft" to drift with the water, and when the flood recedes to a suitable place to rebuild the nest, this way is called the spread of water flow.
Qi Guojun told reporters that human transmission is the main reason for the long-distance spread of red fire ants. Red fire ants can travel far and wide with turf, flowers, and seedlings.
"There are also many ways to invade species, such as intentional introduction into invasive species, with international trade, introduction to transportation and natural transmission." Qi Guojun said that invasive species can be naturally migrated by wind, water or insects and birds, so that plant seeds, animal eggs or larvae, and microorganisms can be naturally migrated and gradually spread to new areas, such as the migration of the grassland night moth to invade the mainland, and the purple-stemmed Zelan to invade Yunnan from the China-Myanmar border.
Li Yongtao introduced: "Vinifera is easy to be identified by the naked eye only when it is flowering, and at this time, its pollen has been scattered everywhere with the wind, and its spread is difficult to curb." ”
High-tech precision helps to investigate and prevent
How can invasive harmful species that have already been endangered be eliminated? Li Yongtao told reporters that at present, the means of prevention and control of invasive organisms mainly include artificial physical prevention, sowing chemical drugs and biological control, etc., and usually it is necessary to comprehensively apply a variety of methods according to specific conditions to achieve the desired effect.
Since 2019, the unified deployment arrangement of the Ministry of Agriculture and Rural Affairs and the technical team of South China Agricultural University have been responsible for implementation, and the grid survey and monitoring of five major invasive alien species of Ganju, Fushouluo, Red Fire Ant, Water Hyacinth and Lantana in Guangdong Province have been completed, with an area of more than 1.1 million mu, and the promotion and demonstration of integrated control technology has been carried out in many places for its key harmful species, red fire ant, Wei Chamomile and water hyacinth, with remarkable results.
Li Yongtao said: "For example, along the liuxi river with a high incidence of harmful alien species, we focus on the investigation and control of vinifera and red fire ants. For Vincentia, we quickly identify Pyrifolium through infrared remote sensing and spectral character analysis of unmanned aerial vehicles, and using the new gene map recognition technology, we can quickly identify the distribution and location of Virtuoso in the all-green background, as well as its degree of harm; At the same time, we also use physical and chemical methods to sanitize it. ”
Li Yongtao told reporters that the prevention and control of alien harmful species needs to be done for a long time and cannot be achieved overnight. "Like vinifera spreading in the wild, its governance is very difficult. To kill chamomile, the same area must be eradicated after repeated sanitize. ”
Customs has built a "fence" for the public to increase vigilance
Speaking of how to prevent the invasion of harmful species, Li Yongtao said: "At present, people's safety awareness of invasive species is still relatively weak, and many invasive species are actively introduced from abroad by some domestic planting and breeding units, without reasonable risk assessment and safety control, resulting in a large number of introduced species escaping and breeding. Invasive species pose a great threat to the safety of native species, ecological security, human health, especially the sustainable development of society, and the whole society should attach great importance to it. ”
Second, Li Yongtao suggested that we should speed up the institutionalization and improve the governance system. "Establish a sound institutional system, in line with international standards, from the ecological risk assessment of species introduction, the construction of information networks, the monitoring of ecological risks of alien species, the establishment of a multi-sectoral cooperation and coordination mechanism, improve the accountability and economic compensation mechanism and other aspects to strengthen legislative and law enforcement work, so as to systematize, legalize and improve the scientific nature of species management."
Third, Li Yongtao believes that the level of prevention and control technology should be improved and the utilization rate of resources should be improved. "We must not only strengthen the integration of multidisciplinary knowledge, learn from each other's strengths and complement each other's shortcomings to achieve the purpose of comprehensively controlling the invasion of alien species, but also study the biological characteristics of invasive alien species and the functions of various parts, explore the ecology and resource utilization, grasp the appropriate scale, and turn harm into profit."
Not long ago, the Ministry of Agriculture and Rural Affairs, the Ministry of Natural Resources, the Ministry of Ecology and Environment, and the General Administration of Customs jointly issued the Administrative Measures for Invasive Alien Species, which came into effect on August 1, 2022.
The Administrative Measures put forward clear requirements for strengthening prevention at the source from three aspects:
The first is to standardize the management of introduction. Where alien species such as crop and forest and grass seed seedlings and aquatic seedlings are introduced from abroad due to special needs such as variety breeding, import examination and approval and quarantine examination and approval shall be handled in accordance with the scope of examination and approval;
The second is to strengthen port prevention and control. Customs shall strengthen prevention and control at ports, crack down on illegal acts such as illegal introduction, carrying, delivery and smuggling of alien species, and dispose of invasive alien species found in accordance with law;
The third is to strengthen domestic quarantine. The competent departments for agriculture, rural areas, forestry and grasslands at or above the county level shall strengthen quarantine supervision over the transfer of crops and forest and grass seeds and seedlings, plant products, aquatic products, and other such quarantine supervision and control across regions within the territory.
Source: Ocean Network