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On the Front Line: Quantitative Virus Dynamics in Honeybee ( L.) Colonies along a New Expansion Front of the Parasite
Honeybees currently face a dramatic decline worldwide. The main honeybee parasite - Varroa destructor - plays a key role in these mortalities, since uncontrolled infestation inevitably results in the death of the colony. The pathological effects of Varroa infestations are partly attributed to the association of the mite with several honeybee viruses, primarily deformed wing virus (DWV). However the exact role that Varroa plays in the spread of honeybee viruses is still unknown. The recent arrival of Varroa in New Zealand provided a timely opportunity to gain insights into the complex relationship between bees, Varroa and viruses. Our data reveal that the different viruses have unique quantitative dynamics in relation to Varroa infestation, resulting in a shifting succession of virus infections that ultimately leaves DWV as the predominant infection. Assumption-free analysis shows consistent clustering of the data according to Varroa-infestation history, confirming a progressive change in the overall virus landscape co-incident with Varroa infestation. We also highlight possible interactions between several viruses. Our findings may have implications for the beekeeping industry, by highlighting the dynamic changes in the virus infections due to the arrival of Varroa, and how these are maintained.
Vyšlo v časopise: On the Front Line: Quantitative Virus Dynamics in Honeybee ( L.) Colonies along a New Expansion Front of the Parasite. PLoS Pathog 10(8): e32767. doi:10.1371/journal.ppat.1004323
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1004323Souhrn
Honeybees currently face a dramatic decline worldwide. The main honeybee parasite - Varroa destructor - plays a key role in these mortalities, since uncontrolled infestation inevitably results in the death of the colony. The pathological effects of Varroa infestations are partly attributed to the association of the mite with several honeybee viruses, primarily deformed wing virus (DWV). However the exact role that Varroa plays in the spread of honeybee viruses is still unknown. The recent arrival of Varroa in New Zealand provided a timely opportunity to gain insights into the complex relationship between bees, Varroa and viruses. Our data reveal that the different viruses have unique quantitative dynamics in relation to Varroa infestation, resulting in a shifting succession of virus infections that ultimately leaves DWV as the predominant infection. Assumption-free analysis shows consistent clustering of the data according to Varroa-infestation history, confirming a progressive change in the overall virus landscape co-incident with Varroa infestation. We also highlight possible interactions between several viruses. Our findings may have implications for the beekeeping industry, by highlighting the dynamic changes in the virus infections due to the arrival of Varroa, and how these are maintained.
Zdroje
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