Rising US Heat Spurs Urban Rats' Numbers

Rising US heat spurs urban rats' numbers

Rodents are increasingly successful urban neighbours. Image: By Mert Guller on Unsplash

It may not be the sole cause of US urban rats’ rising numbers, but climate change’s growing heat is probably implicated.

In the heat of a US summer, urban rats’ thoughts focus on one goal: it’s reproduction time, as the media make clear.

They go for the type of headlines which send shivers down the spine. “Rats love climate change”, says one. “Climate change is scary; rat explosion is scarier”, says another.

Reports from several cities in the US indicate that city rat populations are increasing, and many point to climate change as a primary cause of what is a growing rodent problem.

The actual reasons for what some of the more florid commentators refer to as a “ratpocalypse” are difficult to gauge. Little research has been carried out.

Take, for example, New York City. Estimates of the size of the city’s rat population – the human population is 8.6 million – range anywhere between 2 and 32 million.

“The brown rat, or Rattus norvegicus, common on the US east coast, can produce six litters a year with an average of 12 pups per litter”

While the figures might be vague, there’s general agreement that the city’s rat numbers are growing substantially. Calls to vermin controllers have increased. City officials say the incidence of rat sightings has gone up by nearly 40% over the last five years.

Rats can be vectors, or carriers, of disease and can transmit ticks and fleas. They can also do considerable damage to vital infrastructure, gnawing through wires and damaging pavements and drainage systems by their burrowing.

In cold weather rats tend to be inactive and stay in their burrows. With milder winters and rising average temperatures, rats’ breeding season is extended.

Rats reproduce at a prolific rate; the brown rat, or Rattus norvegicus, common on the US east coast, can produce six litters a year with an average of 12 pups per litter.

“Everywhere I go, rat populations are up”, a research scientist told the New York Times newspaper.

More city residents

Other US cities report similar rat infestations; Chicago is said to have a particularly serious rodent problem.

While increased temperatures are believed to be one cause of the growth in rat populations, other factors are involved. In the US and around the world, more and more people are choosing to live in cities.

By 2050, it’s estimated that 70% of the world’s population will be urban-based. More people in tightly-packed areas means more food being accumulated and more rubbish. Inefficient waste collection facilities in many urban areas inevitably lead to a growth in rodent numbers.

Surprisingly, there seems to have been little research into urban rats, their behaviour and the size of populations in various cities.

One problem encountered by researchers is that many urban dwellers, particularly landlords, are reluctant to admit to rat infestation problems – or to highlight the issue by allowing scientists to carry out surveys on their premises. − Climate News Network

About the Author

cooke kieran

Kieran Cooke is co-editor of the Climate News Network. He is a former BBC and Financial Times correspondent in Ireland and Southeast Asia., http://www.climatenewsnetwork.net/

This Article Originally Appeared On Climate News Network

Related Books

Life After Carbon: The Next Global Transformation of Cities

by Peter Plastrik , John Cleveland
1610918495The future of our cities is not what it used to be. The modern-city model that took hold globally in the twentieth century has outlived its usefulness. It cannot solve the problems it helped to create—especially global warming. Fortunately, a new model for urban development is emerging in cities to aggressively tackle the realities of climate change. It transforms the way cities design and use physical space, generate economic wealth, consume and dispose of resources, exploit and sustain the natural ecosystems, and prepare for the future. Available On Amazon

The Sixth Extinction: An Unnatural History

by Elizabeth Kolbert
1250062187Over the last half-billion years, there have been Five mass extinctions, when the diversity of life on earth suddenly and dramatically contracted. Scientists around the world are currently monitoring the sixth extinction, predicted to be the most devastating extinction event since the asteroid impact that wiped out the dinosaurs. This time around, the cataclysm is us. In prose that is at once frank, entertaining, and deeply informed, New Yorker writer Elizabeth Kolbert tells us why and how human beings have altered life on the planet in a way no species has before. Interweaving research in half a dozen disciplines, descriptions of the fascinating species that have already been lost, and the history of extinction as a concept, Kolbert provides a moving and comprehensive account of the disappearances occurring before our very eyes. She shows that the sixth extinction is likely to be mankind's most lasting legacy, compelling us to rethink the fundamental question of what it means to be human. Available On Amazon

Climate Wars: The Fight for Survival as the World Overheats

by Gwynne Dyer
1851687181Waves of climate refugees. Dozens of failed states. All-out war. From one of the world’s great geopolitical analysts comes a terrifying glimpse of the strategic realities of the near future, when climate change drives the world’s powers towards the cut-throat politics of survival. Prescient and unflinching, Climate Wars will be one of the most important books of the coming years. Read it and find out what we’re heading for. Available On Amazon

From The Publisher:
Purchases on Amazon go to defray the cost of bringing you InnerSelf.comelf.com, MightyNatural.com, and ClimateImpactNews.com at no cost and without advertisers that track your browsing habits. Even if you click on a link but don't buy these selected products, anything else you buy in that same visit on Amazon pays us a small commission. There is no additional cost to you, so please contribute to the effort. You can also use this link to use to Amazon at any time so you can help support our efforts.

 

enafarzh-CNzh-TWdanltlfifrdeiwhihuiditjakomsnofaplptruesswsvthtrukurvi

follow InnerSelf on

facebook-icontwitter-iconrss-icon

 Get The Latest By Email

{emailcloak=off}

LATEST VIDEOS

How These Three Financial Firms Could Change The Direction Of The Climate Crisis
How These Three Financial Firms Could Change The Direction Of The Climate Crisis
by Mangulina Jan Fichtner, et al
A silent revolution is happening in investing. It is a paradigm shift that will have a profound impact on corporations,…
PBS Nova's Polar Extremes
PBS Nova's Polar Extremes
by PBS
In this two-hour special, renowned paleontologist Kirk Johnson takes us on an epic adventure through time at the polar…
A huge iceberg just broke off West Antarctica’s most endangered glacier
A Huge Iceberg Just Broke Off West Antarctica’s Most Endangered Glacier
by Madeleine Stone
Huge blocks of ice regularly shear away from Antarctica’s ice shelves, but the losses are speeding up.
The Rise Of Solar Power
by CNBC
Solar power is on the rise. You can see the evidence on rooftops and in the desert, where utility-scale solar plants…
World's Largest Batteries: Pumped Storage
by Practical Engineering
The vast majority of our grid-scale storage of electricity uses this clever method.
Hydrogen Fuels Rockets, But What About Power For Daily Life?
Hydrogen Fuels Rockets, But What About Power For Daily Life?
by Zhenguo Huang
Have you ever watched a space shuttle launch? The fuel used to thrust these enormous structures away from Earth’s…
Fossil Fuel Production Plans Could Push Earth off a Climate Cliff
by The Real News Network
The United Nations is beginning its climate summit in Madrid.
Big Rail Spends More on Denying Climate Change than Big Oil
by The Real News Network
A new study concludes that rail is the industry that's injected the most money into climate change denial propaganda…

LATEST ARTICLES

Why Australian Labor’s Climate Policy Is Too Little, Too Late
Why Australian Labor’s Climate Policy Is Too Little, Too Late
by Will Steffen
Opposition leader Anthony Albanese’s announcement on Friday that a Labor government would adopt a target of net-zero…
How These Three Financial Firms Could Change The Direction Of The Climate Crisis
How These Three Financial Firms Could Change The Direction Of The Climate Crisis
by Mangulina Jan Fichtner, et al
A silent revolution is happening in investing. It is a paradigm shift that will have a profound impact on corporations,…
Green Ammonia Could Slash Emissions From Farming And Power Ships Of The Future
Green Ammonia Could Slash Emissions From Farming And Power Ships Of The Future
by Bill David
For the past 100 years, a simple molecule has had an immensely positive impact on our world. Ammonia, which comprises…
Ideal US Cities To Survive Climate Change
Ideal US Cities To Survive Climate Change
by Johnna Crider
Climate scientists have shared where they think would be an ideal place to live in the United States in order to avoid…
Stories Of When Your Kids Make You Feel Old! | The Curls
Old Conservative White Men: Pass The Football To Someone Who Will Try To Score
by Robert Jennings, InnerSelf.com
We have had important US elections but this one in November 2020 is undoubtedly the most important. Why? America and…
How Tiny Microbes Are Revolutionizing Big Agriculture
How Tiny Microbes Are Revolutionizing Big Agriculture
by Mathew Wallenstein, Colorado State University
Walk into your typical U.S. or U.K. grocery store and feast your eyes on an amazing bounty of fresh and processed…
Uk’s Nuclear Future Hangs On Electricity Tax
Uk’s Nuclear Future Hangs On Electricity Tax
by Paul Brown
The new British prime minister, Boris Johnson, must soon decide whether to save the UK’s nuclear future with an…
Extreme Weather Could Push The U.S. Into Recession
Extreme Weather Could Push The U.S. Into Recession
by Karen Nikos
Physical climate risk from extreme weather events remains unaccounted for in financial markets, a new paper warns.