Home > Lifestyle > EnviroHealth > News 28 March 2013 Insects plentiful in hot parts of cities Higher temperatures in cities can be a key driver of insect pest outbreaks on trees in urban areas, according to research. 0 iStock Related When trees die off human health will suffer Insect bites What is global warming? Start A Health24 blog » Follow Health24 on Facebook » Test Are you envirohealth savvy? » Ask EnviroHealth Expert » Blood Lions: Bred for the Bullet movie trailer The amazing mountains on Pluto Higher temperatures in cities can be a key driver of insect pest outbreaks on trees in urban areas, according to research published in the open access journal PLOS ONE by Emily Meineke from North Carolina State University and colleagues from other institutions.The researchers found that a scale insect that exclusively feeds on oak trees was 13 times more abundant on willow oaks in the hottest parts of the city of Raleigh, North Carolina than in cooler areas of the same city, even when other factors, like natural enemies that would kill the insects, were similar in both areas. In a second experiment, they found scale insects collected from trees in hot areas had higher survival rates in hot greenhouses than in cool ones. However, insects originally from cooler urban areas remained low in number in both hot and cool greenhouses. Urban warming leads to higher pest abundanceThe researchers found no differences in the rates of reproduction of insects in any of these groups. Thus, they suggest that the differences in abundance may be a result of differences in survival rather than a higher reproductive capacity.Urbanisation of an area changes the species that dwell in it. Previous studies have analysed these effects in terms of loss of resources or changes to habitat, but this is the first research to focus on the effects of "heat islands" created in cities. Meineke explains that, "Urban warming can lead to higher insect pest abundance, a result of pest acclimation or adaptation to higher temperatures."The study concludes that since current urban warming is similar in magnitude to the higher temperatures predicted by global warming in the next fifty years, their results may indicate potential changes in pest abundance as natural forests also grow warmer. EurekAlert More in Lifestyle Cape school gets clean drinking water for the first time More: EnviroHealthNews advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news News Medical error third leading cause of death in US Parenting Preemies' brains boosted by breast milk Medical Could infant colds and other infections raise type 1 diabetes risk? Medical 15 tips for students with allergies Diet and nutrition 8 non-food reasons why your Banting weight loss has stalled Medical Debunking myths about flu and the flu vaccine From our sponsors Top tips for beating PMS now Win a spa voucher worth R1000! Don't let PMS get you down Four tips for healthy winter hair Live healthier The struggle is real » 5 things to know before taking an antihistamine How to cope with seasonal allergies 15 tips for students with allergies For university students, moving out of home can be daunting at the best of times but for those with severe allergies or asthma, it may feel close to impossible. Coffee and wine for the win! » Could heartburn drugs upset your 'good' gut bacteria? Life is a gut reaction Good news! Coffee & wine may promote a healthy gut Diverse bacteria help your gut stay healthy. Here's how what you eat and drink can help or harm that balance - and it's not all bad news.