Nouvelle déclaration d'incident
No de la demande: 2021-1245
Numéro de référence du titulaire d'homologation: VOP
Nom du titulaire (nom légal complet, aucune abbréviation): VETO-PHARMA SAS
Adresse: 12-14 Rue de la Croix Martre
Ville: Palaiseau
Pays: France
Code postal /Zip: 91120
Environnement
Pays: CANADA
État: ONTARIO
ARLA No d'homologation 29092 ARLA No de la demande d'homologation EPA No d'homologation.
Nom du produit: Apivar (TM) Strips
Oui
Autres unités: Strips per brood box
Site: Personal use / Usage personnel
Terr. Invrtbrt-Honey Bee/Inv.Ter-Abeille
Honey bee
Inconnu
Inconnu
Autre
Mort
9 hives were treated for 6 weeks in autumn 2020 with two strips of Apivar per brood box. In march 2021, 6 months after treatment, 6 of the 9 colonies were lost for unknown reasons. No monitoring data of varroa infestation is available. The weather is still very cold in Ontario and has been since the treatment. The beekeeper is following up with oxalic acid vaporization in remaining colonies. There was no follow up of the infestation, but the beekeeper observed high dead mites counts on solid bottom boards in the dead outs. The same hives were inspected by local Ontario bee inspector on July 6th, 2020. Alcohol washes were performed, and no mites were found. The colonies were very strong before treatment, with lots of bees, and brood. The beekeeper also fed heavily with syrup and was concerned that he overfed. He mentioned that hives may have become honey bound, with little empty comb for the queen to lay eggs. The hives were dry, with no mold. The are located on the edge of forested area. Previously last fall, all hives had 2, or 3 deep hive bodies. He reduced some to as few as 1 hive body. So the apiary entered the fall with one hive with 3 deep boxes, four hives with 2 deeps 4 hives with a single deep box. Hives lost had 1, 2 3 brood boxes. After removing the honey supers to place the strips, the beekeeper observed a lot of bearding outside of his hives for two to three weeks, especially in four of the colonies that died.
N/A
Inconnu
Inconnu
Inconnu
Non
Non
Non
Non
Majeure
There was no monitoring of the varroa infestation before, during or after treatment. Other underlying cause cannot be excluded, and there was no monitoring of the varroa infestation in the colonies. Cold temperatures might have made the feeding difficult for the bees, possibly leading to fermentation of the syrup in the hives. Furthermore, the bearding in many hives for two to three weeks could have reduced the exposure of bees to the treatment. The bees that were not exposed to the treatment could reinfestate the bees in the brood boxes and in other hives of the apiary. At last, the adverse event was observed around 6 months after the beginning of the treatment, at the end of winter season.