Washington (AP) -In many world cities, rat invasion seems to be soaring, especially in Washington. New research blame temperature, urbanization, and other human behavior.
In the first survey of rat groups and reasons that are difficult to count, we use rat aiming reports in 16 cities around the world. According to a Journal SCIENCE ADVANCES survey on Friday, the rat complaints are increasing in 11 of these cities.
Based on the individual trends in the cities, Washington was a rat leader, followed by San Francisco, Toronto, New York, and Amsterdam. Research has reported that Washington's RISING RAT reported trends three times that of Boston's trend, three times the report in New York, and 50 %. Washington officials did not respond to the comment request.
Only three cities have seen the trend in New Orleans, Louisville and Tokyo, and the Maldigra house has shown the greatest decrease in rats. Experts said that Louisiana City could teach others how to fight rat problems.
Researchers have performed statistical analysis of RISING RAT reports in these cities, concluding that it is due to the temperature of coal, oil, and natural gas, slightly above 40 % of the tendency to see. Ta. And when he returned to sex and food, the chief author of Jonathan Richardson, a biologist at Richmond University, said.
“Probably, since this is a small mammal with physiological tasks in the cold season, there is a trend in rats in the fastest warmed city,” Richardson said. “If the weather begins one or two weeks after winter, and spring arrives 1-2 weeks ago, it is 1, 2, 3, 4 weeks, and those rats are collected on the ground and obtained. You may be able to squeeze one or two reproductive cycles.
The extra moon may not be heard much, but women's rats can hold garbage every month. Richardson stated that each garbage was 8-16 baby rats. “It's a recipe for accelerating population.”
Researchers have pointed out two other large statistical links behind more rat reports (suitable for known biological issues). A city with high urbanization and high population density.
Rats, research and external scientists, such as the environment near the research and the waste, said. Several experts said they were eating at the same table as humans.
“Rats are the third most successful mammals behind humans and house mouse. A rat Czar Kathleen Corradi in New York has evolved to live with us during a break at the New Orleans Conference on improving pest control. “They are in the continent as a whole, except for Homo Sapiens, and are considered evil.”
Rats are intelligent and very adaptive, but Richardson and other experts said they were serious for people.
“The group of rodents is high, people are sick, people are disabled, cars are disabled, mental health is reduced, fires are caused, and food is focused,” Houston's expert Michael. Persons said. People are correctly bothered by rats for the “natural fear caused by creatures that can make us sick.”
Researchers do not have a good number in rats. This is one of the first attempts to quantify them, as they are not as easy as other creatures for the way they live and hide. This study is not a rat count, but a complaint count of people.
Richardson stated that the tendency they discovered had a scientific merit, as statistics dated for many years and only cities that have not changed the reporting method. He says that Washington tends to increase the most, which does not mean that there are witnesses for more rats and rats, but that is the faster the city. Ta.
Several external experts said this study was legal, wise, and very needed.
“This paper is the biggest data -led initiative to understand the changes in the number of rats in cities so far,” said Jason Munshi, a professor of ecology of the Drexel University, which is not part of the research. Professor South said.
According to Richardson and Coradi, looking at some cities where rats have fallen may be useful for fighting Rats. The answer is not to be poison or Trap, but it is a prevention.
“In New Orleans, they go out to the neighborhood, make great efforts to conduct educational workshops and campaigns, and talk to residents about the possibility that their property has a rat,” Richardson. I said.
Recently in New York City, the recent rat battle, including the replacement of the garbage on the street with a rat -resistant container, has not yet been introduced in Richardson's data, but Rat Charcoal Colla. D said that the initial results were encouraged. The city signed a person called “NYC RAT PACK”, a rat fighter elite team.
It's a difficult battle.
“Our cities are warm, urbanized, and (increasing), increasing the number of rats and increasing the number,” said Cary Birers, a health scientist at Simon Frazer University. I mentioned it.
According to Neil Curter, a conservation scientist at Michigan University, “it is necessary to coexist with wildlife in the urban environment.” Ta.
“Zero Lat is not possible,” Richardson said. “However, I think that the expectation that we need to live with the number of rats seen in many of these cities is also an unhealthy perspective on this problem.”
