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Tue, 29 Oct 2019 13:30:01 -0400 |
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> On Oct 29, 2019, at 9:51 AM, Cam Bishop <[log in to unmask]> wrote:
>
> In years of use I have never seen this with OA vaporization.
The authors state:
> When the oxalic acid treatment occurs in broodright colonies, honeybee larvae may be exposed to OA via diet and, potentially, per cuticula (by evaporation and/or spraying). There are only few studies dealing with exposure of larvae. Two in vivo studies showed adverse effect of oxalic acid on bee brood following direct spray application (Higes et al. 1999; Gregorc et al. 2004).
the citations refer to:
Higes M, Meana A, Suárez M, Llorente J (1999) Negative long-term effects on bee colonies treated with oxalic acid against Varroa jacobsoni Oud. Apidologie 30:289–292
Gregorc A, Pogaènik A, Bowen ID (2004) Cell death in honeybee (Apis mellifera) larvae treated with oxalic acid. Apidologie 35:453–460
Pete 🐝
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