“Regardless of the method used, our results converge on the same conclusion: mites and ticks form a natural group”, points out the expert Jesús Lozano, member of the Department of Evolutionary Biology, Ecology and Environmental Sciences of the UB and also a researcher at the University of Bristol. A new phylogenetic tree for chelicerate arthropods The article published in ‘Nature Communications’ also provides a new evolutionary view on spiders, a zoological group with more than 48,000 described species that until now was considered the most biodiverse chelicerate lineage on the planet. “Today more than 42,000 mites and 12,000 ticks have been described,” says Davide Pisani, professor at the University of Bristol and co-author of the study.

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In his opinion “if these two groups make up Gibraltar Email List a single evolutionary entity – and not two distant ones, as was thought up to now – we must consider that the Acari group is more diverse than spiders.” As Jesús Lozano explains, “we have also been able to verify that the group of arachnids colonized planet Earth only once and not multiple times, as previous studies had suggested”. Thus, evolutionary trees such as those presented in this work provide decisive information to be able to interpret the processes of genomic change. “This new vision of the phylogenetic tree of chelicerates is of potential interest in the field of application of comparative genomics studies to address issues that are relevant in biomedicine and agriculture,

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such as the identification of genomic changes that allowed the evolution of parasitic ticks that feed on blood from ancestors that were not blood-sucking, “concludes Lozano. An international team of researchers in which the National Museum of Natural Sciences (MNCN-CSIC) participates has prepared a synthesis in which they analyze how the composition and configuration of agricultural landscapes affect the abundance of arthropods and the quality of the services that ecosystems provide us. The data confirm that, in areas where there is a higher density of boundaries, the presence of pollinating arthropods increases by up to 70% and that of those that naturally control pests increases by more than 40%. In addition, in these areas dominated by crops

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