Tag-Archive for » Fluvalinate «

Monday, March 16th, 2009 | Author:

What does LD50 mean? What about TLV?

LD50 stands for Lethal Dose 50. It is the amount of a material that, when administered to a population of animals or insects at the stated level, will be lethal for 50% of the population tested. For example and LD50 of 0.015 ?g / bee means that 15 trillionths of a kilogram will kill 50% of the bees that are exposed. The LD50 is established during safety testing conducted during product development. (return to What Has Been Found)

TLV, or Threshold Limit Value, on the other hand, is an occupational exposure level frequently printed on the MSDS (Material Safety Data Sheet) or label of a product. It is the maximum level to which a person can be safely exposed to that product when in use in accordance with the personnel protective equipment described on the label. The level is the amount believed a worker can be exposed day after day for a working lifetime without adverse health effects. The TLV does not relate to the amount that can be safely ingested as TLV values are typical inhalation or skin exposure related.

MORE GREAT DETAILS about CCD and pesticides: http://montcobee1.farming.officelive.com/CCDUpdate.aspx

Tuesday, March 18th, 2008 | Author:

Today’s juicy find on da Net delivered via google news alert came from a little story in the Meadville Tribune which included a reference to MAAREC, “a regional group focused on addressing the pest management crisis facing the beekeeping industry in the Mid-Atlantic Region.”

“The focus of MAAREC research has been on the identification of alternatives to chemical controls and promotion of less reliance on chemical pesticides for mite control. (More) http://maarec.cas.psu.edu/

New On This Site:

  • New! “How to Live With Black Bears” by Craig Cella, June 2005 Am. Bee Journal (Part 1, Part 2)
  • New! Participate in NASA sponsored climate and scale hive study (3/11/2008)
  • New! Pesticide Residue Testing (3/11/2008) - (see copy of PDF below)
  • New! Online Beekeeping Course – University of Delaware (3/11/2008)
  • New! Häagen-Dazs recently presented a gift to Penn State to support entomology research and education on the honey bee crisis. (press release) The ice cream company has unveiled a new interactive website promoting honey bee education and research on colony collapse disorder. (2/22/2007)
  • Mid-Atlantic Beekeepers’ IPM Priorities Survey


Pesticide Analysis of Honey Bee Hive Products and Matrixes

Many beekeepers have expressed an interest in having their hive products or other materials within the hive, such as pollen, wax or nectar, tested for pesticide residues. Because these pesticide analyses are costly, we are working with potential funding agencies to generate monies that would allow us to share the cost of the analysis with beekeepers. This program to share the cost of the analysis would have additional benefits. The information from individual samples would become part of a large centralized, and confidential database maintained at Penn State. Pesticide preparation

We could then provide individual beekeepers with their information in light of all samples analyzed up until that point in time (their levels compared to the average levels in the entire data base). We could also provide additional information about the pesticides detected, such as their relative toxicity to bees (LD50).

To date we do not have the monies to fund this program, however we are working to obtain these funds. In the meantime, beekeepers who wish to have samples analyzed can send them directly to the USDA-AMS-National Science Laboratory (see directions below). If you are willing to allow your data to be available to the Penn State research group working on pesticides for inclusion into the overall database, please state this in writing when you send your sample(s) to the NSL. If you have questions or concerns, please contact Maryann Frazier at mfrazier@psu.edu or by phone at 814-865-4621.

Direct testing through the USDA-AMS-National Sciences Lab

USDA-AMS-National Science Laboratory (NSL)
801 Summit Crossing Place, Suite B
Gastonia, NC 28054

The NSL can provide fee-for-service pesticide residue testing of honey bee hive products, including honey, wax, pollen, royal jelly, bees, brood, and bee bread. We can also test other sample types upon request and consultation.

The fee schedule is as follows: Comprehensive pesticide residue testing of 170 pesticides and metabolites – $252.00

Focused pesticide residue testing of Amitraz and its metabolites (2,4-dimethyl aniline and 2,4-dimethylphenyl formamide), Coumaphos and its metabolites (Coumaphos oxon, Chlorferon and Potasan), and Fluvalinate – $126.00

Samples can be submitted directly to the laboratory address above with the attention to Roger Simonds.

The information needed for any sample submittal is as follows:
• Sample type
• Unique identifier
• Type of testing desired
• Contact information of sample submitter

The results will be reported directly to the sample submitter unless permission is given in writing with the sample that PSU or any other party is to also receive the results.

The sample size should be no less than 1 gram if possible, and preferably greater than 10 grams. A larger sample size is more representative and also allows us to subsample and save some of the original material in case a re-extraction is necessary due to a problem during analysis. Samples should be submitted in very clean, leak-proof, crush-proof (preferably not glass), containers.

Does anyone know of other pesticide testing labs and pricing? Comment here.

Amitraz Tick collar
Etofenprox and Methoprene collar
ZODIAC pet warning… yikes!
Carbaryl flea collar
Permethrin Flea collar
Propoxur flea collar

Incidentally, I was in a feed store/hardware store in Mendocino County, CA on March 1, and noticed the flea collars, and remembered reading about neonicotinoids being suspected of lowering honey bee immunity and causing “CCD” and how they are in flea collars and pet products. Well, I took some pics for later research. Turns out fipronil is the active ingredient in FRONTLINE cream, and that was a substance banned in France in 2004 for killing bees! Is this substance under EPA and public scrutiny? Imagine where all those used collars end up… landfills, garbage cans, places where insects and worms are supposed to thrive and do the work of breaking down our waste. Imagine all the places your dogs and cats wander around outdoors, laying, rubbing against, scratching away hairs that contain residues of this chemical. How long does the chemical survive? Is it one of those found in water supplies across the U.S. by the Associated Press Investigative team (followup)? Who’s got a report back on the EPA status of this “active ingredient, fipronil?” A 10 second google search found this public discussion… Comment, please.

Flea collar with fipronil - product name “FRONTLINE”