Fwd: BEE-L Digest - 25 Apr 2025 to 26 Apr 2025 (#2025-89)

[lin...@tds.net]

fyi

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From: "BEE-L automatic digest system" <LIST...@COMMUNITY.LSOFT.COM>
To: BE...@COMMUNITY.LSOFT.COM
Sent: Saturday, April 26, 2025 11:00:16 PM
Subject: BEE-L Digest - 25 Apr 2025 to 26 Apr 2025 (#2025-89)

There are 3 messages totaling 120 lines in this issue.

Topics of the day:

1. And more on the US bee losses
2. varrox-san leaks
3. Isofucosterol in bee diet

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Date: Sat, 26 Apr 2025 09:39:50 -0400
From: "Yoon Sik Kim, Ph. D." <drkim...@GMAIL.COM>
Subject: Re: And more on the US bee losses

Dear All,

As I recall--and as the Bee-L archive astutely attests--we have pointed out the Neonics should be banned as early as 2008. Repeat 2008 and this is 2025. The industry then spun their "science" like this:

Actually, Bayer’s research does address sub-lethal effects. Same is true of
much non-Bayer sponsored research. Several summary papers by Bayer
scientists have appeared over the years that discussed no observed adverse
effect levels. These NOAELs are all based on sub-lethal effects. See
Schmuck et al. (2001. Pest Manag Sci 57:225-238) and Maus et al. (2003,
Bulletin of Insectology 56 (1): 51-58).

It sounds like they did researches addressing sub-lethal effects ON BROOD. Show me the paper.

Ask me if we should trust any "researches" done by the *same industry* that produces the same chemical to make money, for I am convinced they do care about the long -term sustainability of honeybees and our ecology, and never the bottom line or profiteering. Reminds me of DDT and Nicotine earlier. as the latter, for instance, is not addictive according to their executives. I have yet to read a research paper done by the GMO industry that says GMO harms the gut microbiome, for instance.

Here is the original thread from the archive:

https://community.lsoft.com/scripts/wa-LSOFTDONATIONS.exe?A2=0808A&L=BEE-L&D=0&X=O210A291E78F245B9A3&Y=drkimhoney%40gmail.com&P=41739090

Greed greases the world to go around, indeed.

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Date: Sat, 26 Apr 2025 09:10:27 -0700
From: Randy Oliver <ra...@RANDYOLIVER.COM>
Subject: Re: varrox-san leaks

>I put varrox-san strips as instructed in some Nucs and the next day one
strip had dumped a small pool of oxalic
Can you share whether those nucs were on a nectar flow during that time?
The reason I ask is because the glycerin will absorb water from the cluster
atmosphere, which has a higher RH when they are ripening nectar.

Randy Oliver
Grass Valley, CA
530 277 4450
ScientificBeekeeping.com

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Date: Sat, 26 Apr 2025 19:25:13 -0400
From: Juanse Barros <juan...@GMAIL.COM>
Subject: Isofucosterol in bee diet

Abstract

A steady supply of nutritionally adequate pollen from diverse flower
sources is crucial for honeybee colonies. However, climate instability,
large-scale agriculture and the loss of flower-rich landscapes have made
this supply scarce and unpredictable, threatening both apiculture and
sustainable crop pollination. We developed a nutritionally complete
pollen-replacing diet that supports continuous brood production from May to
October in colonies without access to pollen. Omitting isofucosterol, the
third most abundant sterol in honeybees, causes significant reductions in
brood production and neuromuscular dysfunction in adults, identifying
isofucosterol as a critical micronutrient. In contrast, omitting
24-methylene cholesterol—the most abundant honeybee sterol—does not
significantly affect brood production, and surprisingly, bees remain viable
without it. Colonies fed a commercial diet severely declined in brood
production after 36 days and died out. In a season-long experiment
investigating the commercial pollination of blueberry and sunflower fields,
a treatment group fed the complete diet overcame the detrimental effects of
nutritional stress, unlike colonies in ‘No Diet’ and ‘Commercial Diet’
groups. This study suggests that feeding a complete, pollen-replacing diet
to nutritionally stressed colonies can address the root causes of
honeybees' growing nutritional deficiencies, supporting their health and
their vital pollination services.


https://royalsocietypublishing.org/doi/10.1098/rspb.2024.3078


1-C

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End of BEE-L Digest - 25 Apr 2025 to 26 Apr 2025 (#2025-89)
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