The weakest link: Haploid honey bees are more susceptible to neonicotinoid insecticides

Friedli, Andrea; Williams, Geoffrey R.; Bruckner, Selina; Neumann, Peter; Straub, Lars (2020). The weakest link: Haploid honey bees are more susceptible to neonicotinoid insecticides. Chemosphere, 242, p. 125145. Elsevier 10.1016/j.chemosphere.2019.125145

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Neonicotinoid insecticides are currently of major concern for the health of wild and managed insects that provide key ecosystem services like pollination. Even though sublethal effects of neonicotinoids are well known, there is surprisingly little information on how they possibly impact developmental stability, and to what extent genetics are involved. This holds especially true for haploid individuals because they are hemizygous at detoxification loci and may be more susceptible. Here we take advantage of haplodiploidy in Western honey bees, Apis mellifera, to show for the first time that neonicotinoids affect developmental stability in diploid females (workers), and that haploid males (drones) are even more susceptible. Phenotypic fore wing venation abnormalities and fluctuating wing asymmetry, as measures of developmental instability, were significantly increased under field-realistic neonicotinoid-exposure of colonies. The higher susceptibility of haploid drones suggests that heterozygosity can play a key role in the ability to buffer the sublethal effects of neonicotinoids. Aiming to improve conservation efforts, our findings highlight the urgent need to better understand the role that genetics plays at enabling non-target organisms to cope with insecticide exposure.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Bee Health

UniBE Contributor:

Neumann, Peter and Straub, Lars

Subjects:

500 Science > 590 Animals (Zoology)
600 Technology > 630 Agriculture

ISSN:

0045-6535

Publisher:

Elsevier

Language:

English

Submitter:

Anna Papach

Date Deposited:

31 Mar 2020 16:18

Last Modified:

05 Apr 2020 02:50

Publisher DOI:

10.1016/j.chemosphere.2019.125145

PubMed ID:

31678852

BORIS DOI:

10.7892/boris.142074

URI:

https://boris.unibe.ch/id/eprint/142074

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