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Communication Dans Un Congrès Année : 2019

Cross-infections across wild bee species and Apis mellifera

Anne Dalmon
Virginie Diévart
  • Fonction : Auteur
  • PersonId : 1206808
Yves Le Conte
Bernard Vaissière
Laurent Guilbaud
  • Fonction : Auteur
  • PersonId : 1206689
Mickael Henry

Résumé

Viruses are known to contribute to bee populations decline. Possible spillover is suspected from co-occurrence of viruses in wild Apis and A. mellifera species. To study the risk of transmission between adults of wild and managed bee species, we first favoured possible cross-infections using an attractive plant species, Phacelia tanacetifolia, and collected both foraging wild species and A. mellifera. Virus prevalence of about 2000 individuals were checked as individuals or pools for the seven most common bee RNA viruses using multiplex PCR. In A. mellifera, Deformed wing virus (DWV), Black queen cell viruses (BQCV) and Sacbrood virus (SBV) were confirmed to be the most prevalent viruses, while Israelian acute paralysis virus (IAPV) and the close Acute bee paralysis virus (ABPV), and surprisingly BQCV and SBV were the most prevalent in wild species. We sequenced some isolates to look for possible species-specific differentiation in the viral genome. In parallel we participated in a COST European program (Sustainable Pollination in Europe: joint Research on Bees and other pollinators, Super-B) to assess the diversity and geographic distribution of pathogens in Hymenopteran pollinators across Europe. In France, two samplings were performed in 2015 and 2016 (150 individuals), and checked after dissections for both viruses and other pathogens (Nosema sp., Crithidia sp., Gregarines sp).

Domaines

Biologie animale
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Dates et versions

hal-03580211 , version 1 (18-02-2022)

Identifiants

  • HAL Id : hal-03580211 , version 1

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Anne Dalmon, Virginie Diévart, Yves Le Conte, Bernard Vaissière, Laurent Guilbaud, et al.. Cross-infections across wild bee species and Apis mellifera. GDR Pollineco Meeting, 2019, Montpellier, France. ⟨hal-03580211⟩
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