APHIS Honey Bee Survey

APHIS Data Download

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Background

The USDA Animal Plant Health Inspection Service (APHIS) National Honey Bee Survey (NHBS), is a comprehensive examination of colonies throughout the US. The Survey began in 2009 to address the emerging concern about diminishing health in honey bees and invasive threats to honey bees, including Tropilaelaps clareae, Apis cerana, and Slow Bee Paralysis Virus. For more information about this program, see and the USDA APHIS website. ushoneybeehealthsurvey.info and the USDA APHIS website.

Data Description

Each row of the table represents an event where samples were taken at a single location and date. The year, month, state and county are given to represent the date and location while protecting the identity of participants. Diagnostic results are reported from the composite of samples from 8 colonies at each location. Diagnostic results are reported for Varroa and Nosema sp. levels, molecular targets, and pesticide detections. More information about sampling protocols can be found at ushoneybeehealthsurvey.info

Molecular Targets

Molecular targets with a negative result are represented with a '-' in their cell, while positve results are represented with a '+'. Some data has quantitaive results that have been ranked into percentiles. The percentile shows the percent of samples found at the same level, or below, for that particular target. You can think of it as a ranking from 0 to 100, with lower rank is "better" (less virus). For example, a pathogen found to be postive and ranked at 'below 30th', would be a relatively low level at the lower third compared to other samples. Sampling targets are described below.

ABPVAcute Bee Paralysis Virus
CBPVChronic Bee Paralysis Virus
DWV-ADeformed Wing Virus A (formerly DWV)
DWV-BDeformed Wing Virus B (formerly VDV)
IAPVIsraeli Acute Paralysis Virus
KBVKashmir Bee Virus
LSV2Lake Sinai Virus 2
SBPVSlow Bee Paralysis Virus
MKVMoku Virus
Nosema ceranaeunicellular gut parasite that causes Nosema disease

Pesticide Results

Not all locations were sampled for pesticides. If pesticide results are available, the sample type is given (examples: Bee Bread or Wax) first, then the pesticides that were found are listed followed by the level detected. If no detections were found, "No Detections" is listed. For more information about pesticide sampling protocols and results, see the following pages.

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