More than two million commercial colonies of bumblebees are used each year worldwide to pollenate nigh 20 types of crops . These bumblebees can symbolise a risk for idle pollinators , specially those with whom they deal both flower resourcefulness and pathogens . To appointment , however , there is lilliputian grounds on the impact of commercial humblebee on pollinator communities in Europe . That ’s why a team of research worker from the high Council for Scientific Research ( CSIC ) has launched a study to investigate this issue .
The research has been carried out by the team of the Doñana Biological Station ( EBD ) of the CSIC , the Autonomous University of Barcelona , and the University of Almeria in 80 plots of rude home ground at increasing distance from greenhouses in the Almeria neighborhood of Cabo de Gata- Nijar ( the most extensive greenhouse growing area in the world , agree to the study ) , where part of the humblebee that are used to pollinate vegetables go out to expand their diet and visit other wild plants in the closest areas .
The inquiry allow the scientist to observe that there is a acute decrease in commercial-grade bumblebee densities at increase distances from greenhouses , and most bumblebee ( 95 % ) forage within a r of less than 200 1000 from them .
" This information is positive and may indicate that the orbit of influence that this innovate species may have in the area is very modest , at least to date . However , this does not guarantee that there are naturalized colony of bumblebee in the environment , such as we have observed in other regions , for example , in Huelva , " stated research worker Alejandro Trillo .
However , at least 41 % of the analyzed bumblebees had a high prevalence of parasites , trypanosomatids , microsporidia , and neogregrins ; and , even though there are no aboriginal bumblebees in this sphere , several of these leech also affect other pollinator specie , such as beloved bees , which are frequent in the same area and whose imagination niches overlap .
Despite these observations , the study , published in theAgriculture , Ecosystems and Environmentjournal , concluded that the measure and diversity of the rest of pollinators were not impact a priori by commercial humblebee , given the low number of bumblebees that have been notice in the surroundings and the fact that they stay tightlipped to the greenhouses ; However , the squad does not rule out that there are less perceptible effects related to the transmission of pathogens or direct competition with specific species .
" manufacturer should study activeness , such as preventing the escape of commercial coinage from greenhouse or monitor their wellness before being used in crops , to derogate future risk , " stated researcher Montserrat Vila .
root : diariodealmeria.es
