Conservation genomics reveals pesticide and pathogen exposure in the declining bumble bee Bombus terricola.
insecticides
pollinators
transcriptional signs
transcriptomics
Journal
Molecular ecology
ISSN: 1365-294X
Titre abrégé: Mol Ecol
Pays: England
ID NLM: 9214478
Informations de publication
Date de publication:
09 2021
09 2021
Historique:
revised:
21
06
2021
received:
01
03
2021
accepted:
24
06
2021
pubmed:
29
6
2021
medline:
7
9
2021
entrez:
28
6
2021
Statut:
ppublish
Résumé
In recent years, many pollinators have experienced large population declines, which threaten food security and the stability of natural ecosystems. Bumble bees are particularly important because their ability to "buzz" pollinate and tolerate cooler conditions make them critical pollinators for certain plants and regions. Here, we apply a conservation genomics approach to study the vulnerable Bombus terricola. We sequenced RNA from 30 worker abdomens, 18 of which were collected from agricultural sites and 12 of which were collected from nonagricultural sites. We found transcriptional signatures associated with exposure to insecticides, with gene expression patterns suggesting that bumble bees were exposed to neonicotinoids and/or fipronil-two compounds known to negatively impact bees. We also found transcriptional signatures associated with pathogen infections. In addition to the transcriptomic analysis, we carried out a metatranscriptomic analysis and detected five pathogens in the abdomens of workers, three of which are common in managed honey bee and bumble bee colonies. Our conservation genomics study provides functional support for the role of pesticides and pathogen spillover in the decline of B. terricola. We demonstrate that conservation genomics is an invaluable tool which allows researchers to quantify the effects of multiple stressors that impact pollinator populations in the wild.
Identifiants
pubmed: 34181797
doi: 10.1111/mec.16049
pmc: PMC8457087
doi:
Substances chimiques
Insecticides
0
Neonicotinoids
0
Pesticides
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
4220-4230Informations de copyright
© 2021 The Authors. Molecular Ecology published by John Wiley & Sons Ltd.
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