Effect of acute pesticide exposure on bee spatial working memory using an analogue of the radial-arm maze. / Samuelson, Elizabeth; Chen-Wishart, Zachary; Gill, Richard; Leadbeater, Ellouise.

In: Scientific Reports, Vol. 6, 38957, 13.12.2016, p. 1-11.

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Effect of acute pesticide exposure on bee spatial working memory using an analogue of the radial-arm maze. / Samuelson, Elizabeth; Chen-Wishart, Zachary; Gill, Richard; Leadbeater, Ellouise.

In: Scientific Reports, Vol. 6, 38957, 13.12.2016, p. 1-11.

Research output: Contribution to journalArticlepeer-review

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@article{26b0e662bc02411592495f09f12372c3,
title = "Effect of acute pesticide exposure on bee spatial working memory using an analogue of the radial-arm maze",
abstract = "Pesticides, including neonicotinoids, typically target pest insects by being neurotoxic. Inadvertent exposure to foraging insect pollinators is usually sub-lethal, but may affect cognition. One cognitive trait, spatial working memory, may be important in avoiding previously-visited flowers and other spatial tasks such as navigation. To test this, we investigated the effect of acute thiamethoxam exposure on spatial working memory in the bumblebee Bombus terrestris, using an adaptation of the radial-arm maze (RAM). We first demonstrated that bumblebees use spatial working memory to solve the RAM by showing that untreated bees performed significantly better than would be expected if choices were random or governed by stereotyped visitation rules. We then exposed bees to either a high sub-lethal positive control thiamethoxam dose (2.5 ng−1 bee), or one of two low doses (0.377 or 0.091 ng−1) based on estimated field-realistic exposure. The high dose caused bees to make more and earlier spatial memory errors and take longer to complete the task than unexposed bees. For the low doses, the negative effects were smaller but statistically significant, and dependent on bee size. The spatial working memory impairment shown here has the potential to harm bees exposed to thiamethoxam, through possible impacts on foraging efficiency or homing.",
author = "Elizabeth Samuelson and Zachary Chen-Wishart and Richard Gill and Ellouise Leadbeater",
year = "2016",
month = dec,
day = "13",
doi = "10.1038/srep38957",
language = "English",
volume = "6",
pages = "1--11",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Effect of acute pesticide exposure on bee spatial working memory using an analogue of the radial-arm maze

AU - Samuelson, Elizabeth

AU - Chen-Wishart, Zachary

AU - Gill, Richard

AU - Leadbeater, Ellouise

PY - 2016/12/13

Y1 - 2016/12/13

N2 - Pesticides, including neonicotinoids, typically target pest insects by being neurotoxic. Inadvertent exposure to foraging insect pollinators is usually sub-lethal, but may affect cognition. One cognitive trait, spatial working memory, may be important in avoiding previously-visited flowers and other spatial tasks such as navigation. To test this, we investigated the effect of acute thiamethoxam exposure on spatial working memory in the bumblebee Bombus terrestris, using an adaptation of the radial-arm maze (RAM). We first demonstrated that bumblebees use spatial working memory to solve the RAM by showing that untreated bees performed significantly better than would be expected if choices were random or governed by stereotyped visitation rules. We then exposed bees to either a high sub-lethal positive control thiamethoxam dose (2.5 ng−1 bee), or one of two low doses (0.377 or 0.091 ng−1) based on estimated field-realistic exposure. The high dose caused bees to make more and earlier spatial memory errors and take longer to complete the task than unexposed bees. For the low doses, the negative effects were smaller but statistically significant, and dependent on bee size. The spatial working memory impairment shown here has the potential to harm bees exposed to thiamethoxam, through possible impacts on foraging efficiency or homing.

AB - Pesticides, including neonicotinoids, typically target pest insects by being neurotoxic. Inadvertent exposure to foraging insect pollinators is usually sub-lethal, but may affect cognition. One cognitive trait, spatial working memory, may be important in avoiding previously-visited flowers and other spatial tasks such as navigation. To test this, we investigated the effect of acute thiamethoxam exposure on spatial working memory in the bumblebee Bombus terrestris, using an adaptation of the radial-arm maze (RAM). We first demonstrated that bumblebees use spatial working memory to solve the RAM by showing that untreated bees performed significantly better than would be expected if choices were random or governed by stereotyped visitation rules. We then exposed bees to either a high sub-lethal positive control thiamethoxam dose (2.5 ng−1 bee), or one of two low doses (0.377 or 0.091 ng−1) based on estimated field-realistic exposure. The high dose caused bees to make more and earlier spatial memory errors and take longer to complete the task than unexposed bees. For the low doses, the negative effects were smaller but statistically significant, and dependent on bee size. The spatial working memory impairment shown here has the potential to harm bees exposed to thiamethoxam, through possible impacts on foraging efficiency or homing.

U2 - 10.1038/srep38957

DO - 10.1038/srep38957

M3 - Article

VL - 6

SP - 1

EP - 11

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 38957

ER -