Subject: | |
From: | |
Reply To: | |
Date: | Sat, 4 Jun 2022 10:49:39 -0400 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
>
> I wonder if anyone has looked into this?
>
Back when Jerry Hayes wrote the Classroom for ABJ, he frequently advised
against OAV, saying the repeated exposure shortened the lifespan of the
queen, and would lead to increased incidences of supersedure. In theory, it
would be difficult to see adverse effects on workers due to their already
shorter life span, but the queen has a number of sensitive parts that would
frequently be exposed to Oxalic over repeated use and would damage her.
In 2016 I asked him if there were any papers or research that he used to
base this opinion on. He shared the following:
applications of oxalic acid (3%) in autumn and spring showed significantly
negative effects on brood development, queen survival ( and increased adult
bee mortality)
Mutinelli F, Baggio A, Capolongo FP, Prandin RL, Biasion L. A scientific
note on oxalic acid by topical application for the control of Varroosis.
Apidologie 1997; 28(6):461-462.
The paper I found on this can be found here:
https://www.apidologie.org/articles/apido/pdf/1997/05/Apidologie_0044-8435_1997_28_6_ART0012.pdf
I'm assuming it was the same one Jerry was referring to, as the citation
lines up, but the topic does not. I was unable to find the quote in the
paper, as I could only find the following quote:
"In the treated hives no queenlessness was recorded and bee mortality
(12.59 bees/day) did not differ significantly from that observed in the
control hives (12.32 bees/day)"
When I followed up with my above information, Jerry indicated that it was
only logical to assume that a bee that was repeatedly exposed to a
sublimated acid would show effects over time. He elected not to print the
question or answer in the ABJ.
I've since been keeping my eye out for research papers showing the
mortality of oxalic acid on bees. While I haven't done periodic searches, I
do not recall finding any research papers that were directly on point since
2016.
***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html
|
|
|