Saturday , November 28 2020

Asian tits that clones itself can spread rapidly and far away in the US, says a study



"This tick can bite people, pets, farm animals and wildlife," said Ilia Rochlin, study author and entomologist and researcher associated with the Rutgers University Center for Biology of Vector.

Until recently, this species was only found in China, Japan, Korea and Russia as well as in parts of Australia, New Zealand and Pacific Islands. Then, in 2017, the first Asian tickey population was first established in New Jersey, followed by defects in Virginia, West Virginia, Pennsylvania, North Carolina and Arkansas.

Although the tick can cause an infectious disease, no incidents of illness, either in people or in animals, have been reported in the United States.

"There's a good chance for this dish to be distributed widely in North America," said Rochlin. "The management of mosquitoes has been very successful in this country, but we are losing the fight with tired and nicely" diseases.

Abnormal reproduction ability

Dina M. Fonseca, director of the Vector Biology Center, a professor of Rutgers' entomology and co-author of a previous report published by the United States Control Centers and Disease Prevention, has been the amazing ability to reproduce Asian ticks as asexually.

"These ticks are parthenogenetic, which means that women create diploid eggs (with a full set of mother's DNA) that are developed for adults without a DNA need of men," she said. by e-mail (Fonseca did not contribute to the new study.)

Of almost 700 species of "hard" tuckers – the Asian tick tick is one of them – it's only a fat that is known to be phytogenogenic. "So it can be scarce but not exceptional," said Fonseca. This unusual method of creating clones makes it possible for the tic to cause its "huge" plastic to its carers. "We have seen very large numbers of livestock as well as on dogs."

Museum of blood sucking nights: National National Tock Collection of the United States
One of the diseases Asian spreads can transmit severe fever with thrombocytopenia syndrome, a recent hemorrhagic illness in China, South Korea and Japan, according to the previous CDC report.

This syndrome, which also causes swallowing, diarrhea and muscle pain, leads to hospitals to most patients and leads to death for up to a third of a 39; Those who have been infected. This possibility is a concern because a close relative of the illness, the Heartland virus, circulates in Mid and South, indicates Rochlin.

Two Asian boy dancers: a nymph or an intimidation on the left and a female adult.
The tick can also carry other pathogens, including viruses that cause Lyme disease, echlichiosis and anaplasmosis, says Rochlin. All of these illnesses can lead to severe disability.
In Australia and New Zealand, the Asian hood tick has transferred theileriosis to cattle. Also known as "bovine anemia," the illness causes collapse, lack of appetite and, in pregnant cattle, spontaneous abortion or dead birth. "In some regions of New Zealand and Australia, this tick can reduce production in dairy cattle by 25%," said the CDC report.
Summer camps face a deadly tick and mosquitoes

& Where could it go or where could it be? & # 39;

Because the tick has been found in separate regions of the United States, Rochlin is of the opinion that "it has been present in the United States for many years" and it is & Probably have extra land. For its new study, it was modeling likely habitats in North America.

He looked at climate data from Asia, Australia and New Zealand where the tick is set up and then compared to climate reports for North America.

The most suitable habitat for the tick included coastal areas as far north as New Brunswick and Nova Scotia as far south as Virginia and North Carolina, finding Rochlin. On the West Coast, the coastal area where the probability is likely to survive ranges from British Columbia to North California.

Tickets and diseases that fly mosquitoes more than triple, since 2004, in the United States

Large inland holes could become home to this tick: from North Louisiana to Wisconsin and to the south of Ontario and Quebec, as well as the west to Kentucky, Tennessee and Missouri, it showed its study.

Bulky Asian ticks can become "very large" in favorable habitats, says Rochlin. "Along with the abusive biting behavior of this species and its potential for carrying human and animal pathogens, this species is of significant concern to the public."

Put behind an Asian perspective tick

Erika Machtinger, an assistant professor of entomology at the University College of Agriculture, Pennsylvania, said that what is "great" about the new study gives him the "information that everyone wished to know him: where could he go, or where could he be? "

Machtinger, who was not part of the new research, said she likes "installing these awful new things in a perspective. The Zika virus was one of them."

"When you're thinking about the native pathogens that we have here is a problem, Zika's virus was a blip on the radar," said Machtinger from Zika's concerns in the US mainland in 2016. A native pathogen Lyme's disease infects around 320,000 people a year and "it can cause deaths. It can cause serious harm," he said. "That's a problem. This is [tick] is something that we need to be aware of and continue to monitor, but people do not need to be afraid of this. "
Growing the growing population - and their illnesses - are worried about government

Given that there were very few instances of this tick on feeding people, the biggest concern may be that of cattle and other veterinary issues, says Machtinger. However, she did not completely reduce the threat because this is the first introduction of the United States invasive tick in 80 years, he said.

Rabbit rick, the bird tick and other native species, the Asian hockey tick "had been ignored for a few years," said Machtinger, who thinks he could have been here since 2010 or even earlier. "That's the important piece: This is, but it's been here," he said. "And it will not take over the north east or eastern United States quickly if it increases numbers."

Although its ability to click itself means that a tick can produce a couple of egg eggs, "so our native indoor ticks can", says Matchinger. Ultimately, he said, the Asian boy tick may not be more scary than native species.

Rochlin said that this pointed out to US species "strengthens the need to develop a comprehensive strategy for the control of tick and prevention of diseases that are extracted by doc." He added the best protection for those who are worried to practice "the usual precautions against hitting the recommended CDC bits," such as treating clothes and gear with a product that contains 0.5% of permethrin and check your body for ticks after being outdoors.

Machtinger said, "Be diligent in protecting yourself and your animals." And, if you find a tick you've never seen from before, bring it to a vet or university and ask for help.

"We rely on our community scientists," he said. "We're relying on people who are out and finding strange things on their animals that have not seen them to come [in] and say, & where can I get it identified? Can you help me? & # 39; "


Source link