Until recently, this species was found only in China, Japan, Korea and southeast Russia, as well as in some of Australia, New Zealand and the Pacific. Then, in 2017, the first Asian long-grain tick was discovered in New Jersey, followed by findings in Virginia, West Virginia, Pennsylvania, North Carolina and Arkansas.
Although the mite can cause infectious diseases, no cases have been reported in humans or animals in the United States.
"This mite has great potential to become widespread in North America," said Rochlin. "The control of mosquitoes in this country has been very successful, but we are losing the fight against tick-borne diseases."
Unusual reproductive capacity
"These ticks are parthenogenetic, which means that females form diploid eggs (with a complete mother DNA kit) that develop in adults who do not have male DNA," she wrote in an e-mail. (Fonseca has not contributed to the new study.)
Of the nearly 700 "hard" tick species, one of which is the longitudinal mosquito of Asia, only a few of them are known as Parthenhenogenes. "So it's a rare opportunity, but not extraordinary," said Fonseca. This unusual clone-forming method means that a mite can cause its massive "massive" invasion. "We've seen a lot for both livestock and dogs."
This syndrome, which also causes nausea, diarrhea and muscle aches, leads to hospitalization for most patients and causes death in almost a third of the infected. This opportunity is a concern, because the close neighbor of the disease Heartland virus circulates in the Mediterranean and Southern states, said Rochlin.
"Where can this happen or where it might be?"
As the organ is found in a wide variety of parts of the United States, Rochlin believes that it has "been in the United States for several years now" and may provide additional justification. In his new study, he modeled potential habitats in North America.
He looked at climate data from Asia, Australia and New Zealand, where the tick was created, and then compared with climate reports for North America.
Rochlin found the most suitable habitat for tick in coastal areas located far north, like New Brunswick and Nova Scotia, to Virginia and North Carolina. On the West Coast, the coastal area where a tick could survive ranged from South British Columbia to North California.
His study showed that the large internal wagons could also become the home of this organ: from Northwest Louisiana to Wisconsin and to the south of Ontario and Quebec, as well as to the west to Kentucky, Tennessee and Missouri.
Rochelin said that long-term Asian ticks could become "very abundant" habitats. "Due to the aggressive aging of this species and its potential for the transport of human and animal pathogens, this species is a major public health problem."
Positioning the Asian longitudinal tick in perspective
Machtinger, who was not involved in the new study, said she likes to "put these dangers in the prospect of new things. Zico's virus was one of them."
As there are few cases in which this ticks feed on humans, cats and other veterinary issues may be more of a problem, says Machtingers. However, she was not completely satisfied with the threat, since it is the first introduction of invasive ticks that the United States has seen in 80 years, she said.
The tester said that it might have been here since 2010, or even earlier, very similar to a rabbit scallop, a bird's organ and other native species, the Asian long-haul eagle has been "ignored for several years". "This is an important piece: it's here, but it's been here," she said. "And it does not quickly take over the northeastern or eastern part of the United States if it builds figures."
Although it was able to clone itself, it means that a mite can easily produce a few thousand eggs, "it can also be our natural black tick mites," said Matchinger. Finally, she said that an Asian long-term mite may not be more intimidating than some native species.
Machtingers suggested: "Be careful to protect yourself and your animals." And if you happen to find a tick that you have never seen before, take it to a veterinarian or university and ask for help.
"We rely on our community of scientists," she said. "We rely on the people who are there and find strange things that they have not experienced before, for their animals. [in] and say "Where can I identify it? Can you help me?"