Extrapolating from Honeybees to Bumblebees in Pesticide Risk Assessment

  title={Extrapolating from Honeybees to Bumblebees in Pesticide Risk Assessment},
  author={Helen M Thompson and Lynn V. Hunt},
Bumblebees are important pollinators of many crops and wild flowers and there are both conservation and economic reasons for taking action to assess the impact of pesticides on bumblebees. Pesticide risk assessments for honeybees are based on hazard ratios which rely on application rates and toxicity data and are unlikely to be appropriate for bumblebees. Bumblebees are active at different times and on different crop species and are, therefore, likely to have different exposure profiles. Unlike… 

Insecticide Resistence of Bumblebee Species

Bumblebees are important pollinators of many crops and wild flowers and there are both conservation and economic reasons for taking action to assess the impact of pesticides on bumblebees. Pesticide

Assessing the exposure and toxicity of pesticides to bumblebees (Bombus sp.)

There is a need to protect foraging bumblebees from direct overspray in the early morning and late evening when pesticides which are repellent but highly toxic are applied, i.e. pyrethroids.

Problems and Challenges to Determine Pesticide Residues in Bumblebees

The development of new analytical procedures that would use of sample preparation techniques meeting the requirements of green chemistry or the improvement of existing analytical methods can be helpful in developing legal norms regarding the maximum residue levels of pesticides in wild bee organisms.

Risk to pollinators from the use of chlorpyrifos in the United States.

The use of CPY in agriculture in North America does not present an unacceptable risk to honeybees, and compliance with the label precautions and good agricultural practice with the product is the norm in North American agriculture.

Pesticide Residues and Bees – A Risk Assessment

Risks appear to be low, but analysis indicates that residues of pyrethroid and neonicotinoid insecticides pose the highest risk by contact exposure of bees with contaminated pollen, and the synergism of ergosterol inhibiting fungicides with those two classes of insecticides results in much higher risks in spite of the low prevalence of their combined residues.

Impact of chronic exposure to a pyrethroid pesticide on bumblebees and interactions with a trypanosome parasite

Chronic exposure to k-cyhalothrin has a significant impact on worker size, a key aspect of bumblebee colony function, particularly under conditions of limited food resources, which could indicate that under times of resource limitation, colonies exposed to this pesticide in the field may fail.

A novel method for assessing risks to pollinators from plant protection products using honeybees as a model species

A procedure to assess exposure and risk for pollinators based on the foraging behaviour of honeybees (Apis mellifera) and using this species as indicator representative of pollinating insects is developed.

Bombus (Hymenoptera: Apidae) Microcolonies as a Tool for Biological Understanding and Pesticide Risk Assessment

This review closely examines the microcolonies model using peer-reviewed published literature identified by searching three databases through November 2018 and identified a series of recommendations for standardizing core elements of microcolony studies.

Risk Assessment for Honeybees from Pesticide-Exposed Pollen

An exposure index was developed, based on physico-chemical properties, persistence and application rates, which may represent a preliminary tool for a comparative screening of the risk for pollinator insects due to this particular exposure route.

Comparison of buckwheat, red clover, and purple tansy as potential surrogate plants for use in semi-field pesticide risk assessments with Bombus impatiens

B. impatiens foraging activity was significantly greater on buckwheat plots than red clover or purple tansy, but plant type had no effect on number of individuals produced per colony or colony weight, and buckwheats is recommended as a surrogate plant for use in semi-field pesticide toxicity assessments with bumble bees.



Foraging activity of bumblebees (Bombus) in relation to flower resources on arable land

Flower usage by bumble-bees : a basis for forage plant management

Bumble-bees allocate a disproportionately high percentage of their visits to perennial plants of later successional stages, which could be used to indicate which bumble-bee groups visit particular crops, and to plan vegetation management to favour particular bumblebee species selectively.

The superiority of bumblebees to honeybees as pollinators: insect visits to raspberry flowers

Bumblebees are likely to be substantially more important as pollinators of raspberries than are honeybees, especially as rasp berries though moderately self‐fertile may exhibit metaxenia.

Pyrethroids and terrestrial non-target organisms†

The effects of pyrethroids on other components of the terrestrial non-target fauna are considered, with particular reference to effects on ‘beneficial’ organisms, including natural pest-control agents, pollinators, and organisms responsible for the maintenance of soil structure and fertility.

Evaluation of herbaceous plants for attractiveness to bumble bees for use near cranberry farms

Twenty-one herbaceous bee forage species were evaluated for attractiveness to bumble bees and honey bees and for their potential to grow in tandem with cranberry plantings to increase native bee populations for pollination.

Forage for bumble bees and honey bees in farmland: a case study.

The main forage plants important for both long-tongued bumble bee species comprised a seasonal succession of labiates: Lamium album, Stachys sylvatica and Ballota nigra, and probably other plants outside the survey area.

Effect on Honey Bees of Nectar from Systemic Insecticide-Treated Plants

Phosphamidon does not appear to be hazardous at recommended field dosages but dimethoate should not be applied to flowering crops attractive to bees, and Granular applications created less nectar toxicity than sprays at equal amounts of active ingredient per acre.