[Pollinator] [beemonitoring] Details of Virginia Linden Tree Bee Kill and insights on Bee Sampling
Stoner, Kimberly
Kimberly.Stoner at ct.gov
Wed Jun 27 11:13:32 PDT 2018
HI Sam and all,
I found out a couple of years ago from my colleague Rich Cowles that, after the incidents in Oregon, the pesticide companies removed linden trees from the label of the neonicotinoids that are most highly toxic to bees and used on ornamentals.
For example, this label for Safari (dinotefuran) explicitly says:
“Do not apply this product, by any application meth- od, to linden, basswood or other Tilia species”
Link to label: https://www.valent.com/Data/Labels/2015-SAF-0001-form-1510-G.pdf
The label is the law, so if this was applied to linden trees in March of this year, it would be an illegal application.
Kim
From: beemonitoring at yahoogroups.com <beemonitoring at yahoogroups.com> On Behalf Of 'Droege, Sam' sdroege at usgs.gov [beemonitoring]
Sent: Wednesday, June 27, 2018 1:11 PM
To: Entomology Discussion List <ENTOMO-L at listserv.uoguelph.ca>; Pollinator Listserv <pollinator at nappc.org>; Bee United <beemonitoring at yahoogroups.com>; Rich Hatfield <rich.hatfield at xerces.org>; Aimee Code <aimee.code at xerces.org>; Claudia Thompson-Deahl <CLAUDIA at reston.org>
Subject: [beemonitoring] Details of Virginia Linden Tree Bee Kill and insights on Bee Sampling
All:
As Aimee code from Xerces mentioned previously there was a Linden tree associated kill event in Reston, VA
Table below documents the species involved (I did all the identifications)
Queen
Worker
Male
Female
Unknown
Total
Bombus bimaculatus
21
160
100
281
Bombus impatiens
26
134
160
Bombus griseocolis
5
62
47
114
Bombus perplexus
28
521
40
589
Bombus unkown
25
25
Xylocopa virginica
23
42
23
Apis mellifera
6
1
7
Megachile mendica
10
10
Megachile gemula
1
1
Andrena vicina
11
11
Andrena pruni
1
1
Andrena perplexa
5
5
Andrena barbara
6
6
Andrena species
2
2
Eucera rosae
1
1
Total
80
883
210
38
25
1278
Here is what we know:
* 3 trees involved
* Tilia cordata (note: this species is not associated with Linden poisonings in Europe)
* Trees were in parking area of a residential area of Reston, Virginia
* At least 2 trees with noticeable soil injection points
* Management company said they were treated in March and had been treated every year for about 6 years
* Unclear what chemicals were involved or whether treatments changed or whether more trees were treated elsewhere
* Company was advised by their lawyers to no longer speak to anyone
* 3 people reported the kill but no kill was reported in previous years
* Most of these bees were picked up on one day
* 500 or so were picked up by State of Virginia for analysis and not available for species determination
* Management company would not allow additional collections
* Trees were not netted after kills were known
* Note that only 6 Apis were found...despite much greater activity ...likely they took nectar back to hives, not clear if there was honey bee mortality at the hives
* A chemical assay of bees and flowers will be made by the state
* Pattern is very similar to those of Oregon Linden mortality events...and seems likely to involve neonic treatment
We are looking at followup studies to see if mortality continues in subsequent years pending permissions
Note that the kill documented here is only part of the total kill
* Birds were actively eating the dead and dying bees
* Bees could have flown off and died
* Small bees were not found...but were likely present
* Mostly bees were collected from only 1 day, the tree would have been blooming several additional days
Who knew...
There were so many bumble bees in the area.....this is good news from bad. I think we often in our minds underestimate the true number of bees in an area. Here we are in average suburbia with lots of development and have this many bumble bees at one place. When sampling bees we never reach anywhere this number under any circumstance I have seen. Thus we have to wonder how representative some of our low number samples might be, with the notion that we need to probably err on higher capture rates in our studies rather than lower.
sam
The earth has many keys,
Where melody is not
Is the unknown peninsula.
Beauty is nature's fact.
But witness for her land,
And witness for her sea,
The cricket is her utmost
Of elegy to me.
- Emily Dickinson
--
Why Did you Mow My Flowers?
- Bee
__._,_.___
________________________________
Posted by: "Droege, Sam" <sdroege at usgs.gov<mailto:sdroege at usgs.gov>>
________________________________
Reply via web post<https://groups.yahoo.com/neo/groups/beemonitoring/conversations/messages/5378;_ylc=X3oDMTJxY2RkOXMyBF9TAzk3MzU5NzE0BGdycElkAzE3NTk4NTQ1BGdycHNwSWQDMTcwNTA4MzEyNQRtc2dJZAM1Mzc4BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTUzMDExOTQ2Ng--?act=reply&messageNum=5378>
•
Reply to sender <mailto:sdroege at usgs.gov?subject=Re%3A%20Details%20of%20Virginia%20Linden%20Tree%20Bee%20Kill%20and%20insights%20on%20Bee%20Sampling>
•
Reply to group <mailto:beemonitoring at yahoogroups.com?subject=Re%3A%20Details%20of%20Virginia%20Linden%20Tree%20Bee%20Kill%20and%20insights%20on%20Bee%20Sampling>
•
Start a New Topic<https://groups.yahoo.com/neo/groups/beemonitoring/conversations/newtopic;_ylc=X3oDMTJmN3UydmlpBF9TAzk3MzU5NzE0BGdycElkAzE3NTk4NTQ1BGdycHNwSWQDMTcwNTA4MzEyNQRzZWMDZnRyBHNsawNudHBjBHN0aW1lAzE1MzAxMTk0NjY->
•
Messages in this topic<https://groups.yahoo.com/neo/groups/beemonitoring/conversations/topics/5378;_ylc=X3oDMTM1OWxmZGwxBF9TAzk3MzU5NzE0BGdycElkAzE3NTk4NTQ1BGdycHNwSWQDMTcwNTA4MzEyNQRtc2dJZAM1Mzc4BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTUzMDExOTQ2NgR0cGNJZAM1Mzc4> (1)
________________________________
[https://s.yimg.com/ru/static/images/yg/img/megaphone/1464031581_phpFA8bON]
Have you tried the highest rated email app?<https://yho.com/1wwmgg>
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
________________________________
Visit Your Group<https://groups.yahoo.com/neo/groups/beemonitoring/info;_ylc=X3oDMTJmNGV0NjhsBF9TAzk3MzU5NzE0BGdycElkAzE3NTk4NTQ1BGdycHNwSWQDMTcwNTA4MzEyNQRzZWMDdnRsBHNsawN2Z2hwBHN0aW1lAzE1MzAxMTk0NjY->
· New Members<https://groups.yahoo.com/neo/groups/beemonitoring/members/all;_ylc=X3oDMTJnZGoyNGpzBF9TAzk3MzU5NzE0BGdycElkAzE3NTk4NTQ1BGdycHNwSWQDMTcwNTA4MzEyNQRzZWMDdnRsBHNsawN2bWJycwRzdGltZQMxNTMwMTE5NDY2> 1
[Yahoo! Groups]<https://groups.yahoo.com/neo;_ylc=X3oDMTJlczZpZzhoBF9TAzk3NDc2NTkwBGdycElkAzE3NTk4NTQ1BGdycHNwSWQDMTcwNTA4MzEyNQRzZWMDZnRyBHNsawNnZnAEc3RpbWUDMTUzMDExOTQ2Ng-->
• Privacy<https://info.yahoo.com/privacy/us/yahoo/groups/details.html> • Unsubscribe<mailto:beemonitoring-unsubscribe at yahoogroups.com?subject=Unsubscribe> • Terms of Use<https://info.yahoo.com/legal/us/yahoo/utos/terms/>
.
__,_._,___
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sonic.net/pipermail/pollinator/attachments/20180627/8c50a36d/attachment-0001.html>
More information about the Pollinator
mailing list