in southwestern Spain, that the native populations of This pollinating insect is progressively hybridizing with pollinators from commercial colonies installed in the region to favor the profitability of the crops. The research has appeared in the latest issue of Ecological Solutions and Evidence . Specifically, explains Ignasi Bartomeus, EBD researcher and main author of the study, that of the analyzed common bumblebee specimens only 19% could be assigned with high confidence the pure native genetic group; and at least 45% of the specimens sampled were hybrids between native and commercial genotypes, which indicates, in the investigator’s opinion, that genetic introgression, or movement of genes from one bumblebee lineage to another, is

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widespread in southern Spain. “Our genomic data show clear evidence of widespread hybridization between commercial and native bumblebee lineages in southern Spain. Costa Rica Phone Number List We run the risk of losing local adaptations, for example to high summer temperatures; something that we cannot afford in the context of current climate change ”, Bartomeus pointed out. For the study, the team established a sampling protocol as a methodology where the genotypes and phenotypes of the analyzed individuals were recorded, in order to evaluate the presence and extent of hybridization between commercial and native individuals of the common bumblebee. Bumblebees farther from the greenhouses have genotypes closer to the native genotype. In other words,

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native bumblebees were “purer” the further away they were from commercial colonies. However, Bartomeus emphasizes that “non-native alleles have been integrated even in native populations that inhabit protected natural parks more than 60 km away from the cultivation areas where bumblebees are released”. The research concludes that as everything indicates that the demand for pollination services will increase in the coming years, it should be taken into account that only a more restrictive regulation of commercial lines could mitigate the negative impacts on the genetic integrity of native pollinators, avoid genetic homogenization processes and prevent the potential loss of local adaptations. A team of scientists led by Isabel Almudí

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