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 Pizza slice comes at an environmental price 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 Medical Elephant sedative suspected in US drug ODs Medical 5 ways to deal with mental illness in the workplace News East Rand communities up in arms about healthcare Medical Sharing 'snorting straws' spreads hepatitis C Fitness An hour's walk can counteract a sedentary day Medical Zika now tied to miscarriage From our sponsors Salomon introduces Speedcross 4 Painmaster Microcurrent Therapy provides drug-free pain relief Update on Equazen acquisition by Flordis South Africa 2016 When lice just keep coming back! Live healthier Checking for nits? » 8 simple steps for getting rid of lice Get through winter head lice free! This woman gets paid to pick out head lice Lice poop can make your head itch Watch out for the faeces of the lice, which is what can cause itching because of an allergic reaction. The struggle is real! » Is your PMS causing your food cravings? SA women silently suffering from this devastating condition The link between PMS and migraines Why do some women get 'bad' PMS and others don’t? Premenstrual syndrome symptoms affect an average of 75% of women.