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 » Shark feeding frenzy caught on camera The recycling headache list 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 Global warming to have devastating effect on supply and quality of Arabica coffee More: EnviroHealthNews SPONSORED: Fedhealth What cover is right for you? advertisement Get a quote Fedhealth - What cover is right for you? Momentum - save up to 35% on healthcare advertisement Read Health24’s Comments Policy Comment on this story 0 comments Add your comment Thank you, your comment has been submitted. Logout Comment 0 characters remaining Share on Facebook Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Parenting First bit of ejaculate contains more sperm Medical What's killing your sperm? Medical MERS outbreak in South Korea infects 10 Lifestyle 7 natural techniques to help you quit smoking Parenting Baby's teething toys may contain endocrine disruptors Sex Cheating online: what SA's up to! From our sponsors Why hydration is important while exercising Taking charge of your health Man, take care of your health! Live healthier Too Tired? » 20 signs of burnout Staying active reduces stress 10 ways to have a healthier work day Why you're exhausted Lost your mojo? Here are 5 surprising energy drainers, plus the easy fixes that will help put the pep back in your step! Kick the habit » Cancer doesn't make smokers to quit Non-smokers don't use e-cigs Hookah contains benzene How South Africans quit smoking We asked ex-smokers to share their secrets to successfully quitting smoking. Find out how they managed to kick the habit.