---
_id: '2284'
abstract:
- lang: eng
  text: 'Background: The brood of ants and other social insects is highly susceptible
    to pathogens, particularly those that penetrate the soft larval and pupal cuticle.
    We here test whether the presence of a pupal cocoon, which occurs in some ant
    species but not in others, affects the sanitary brood care and fungal infection
    patterns after exposure to the entomopathogenic fungus Metarhizium brunneum. We
    use a) a comparative approach analysing four species with either naked or cocooned
    pupae and b) a within-species analysis of a single ant species, in which both
    pupal types co-exist in the same colony. Results: We found that the presence of
    a cocoon did not compromise fungal pathogen detection by the ants and that species
    with cocooned pupae increased brood grooming after pathogen exposure. All tested
    ant species further removed brood from their nests, which was predominantly expressed
    towards larvae and naked pupae treated with the live fungal pathogen. In contrast,
    cocooned pupae exposed to live fungus were not removed at higher rates than cocooned
    pupae exposed to dead fungus or a sham control. Consistent with this, exposure
    to the live fungus caused high numbers of infections and fungal outgrowth in larvae
    and naked pupae, but not in cocooned pupae. Moreover, the ants consistently removed
    the brood prior to fungal outgrowth, ensuring a clean brood chamber. Conclusion:
    Our study suggests that the pupal cocoon has a protective effect against fungal
    infection, causing an adaptive change in sanitary behaviours by the ants. It further
    demonstrates that brood removal-originally described for honeybees as &quot;hygienic
    behaviour&quot;-is a widespread sanitary behaviour in ants, which likely has important
    implications on disease dynamics in social insect colonies.'
acknowledgement: "The study was funded by the European Research Council (Marie Curie
  ERG 036569) and Marie Curie IEF 302204 to LVU\r\nCC BY 2.0\r\n"
article_number: '225'
article_processing_charge: No
author:
- first_name: Simon
  full_name: Tragust, Simon
  id: 35A7A418-F248-11E8-B48F-1D18A9856A87
  last_name: Tragust
- first_name: Line V
  full_name: Ugelvig, Line V
  id: 3DC97C8E-F248-11E8-B48F-1D18A9856A87
  last_name: Ugelvig
  orcid: 0000-0003-1832-8883
- first_name: Michel
  full_name: Chapuisat, Michel
  last_name: Chapuisat
- first_name: Jürgen
  full_name: Heinze, Jürgen
  last_name: Heinze
- first_name: Sylvia
  full_name: Cremer, Sylvia
  id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
  last_name: Cremer
  orcid: 0000-0002-2193-3868
citation:
  ama: Tragust S, Ugelvig LV, Chapuisat M, Heinze J, Cremer S. Pupal cocoons affect
    sanitary brood care and limit fungal infections in ant colonies. <i>BMC Evolutionary
    Biology</i>. 2013;13(1). doi:<a href="https://doi.org/10.1186/1471-2148-13-225">10.1186/1471-2148-13-225</a>
  apa: Tragust, S., Ugelvig, L. V., Chapuisat, M., Heinze, J., &#38; Cremer, S. (2013).
    Pupal cocoons affect sanitary brood care and limit fungal infections in ant colonies.
    <i>BMC Evolutionary Biology</i>. BioMed Central. <a href="https://doi.org/10.1186/1471-2148-13-225">https://doi.org/10.1186/1471-2148-13-225</a>
  chicago: Tragust, Simon, Line V Ugelvig, Michel Chapuisat, Jürgen Heinze, and Sylvia
    Cremer. “Pupal Cocoons Affect Sanitary Brood Care and Limit Fungal Infections
    in Ant Colonies.” <i>BMC Evolutionary Biology</i>. BioMed Central, 2013. <a href="https://doi.org/10.1186/1471-2148-13-225">https://doi.org/10.1186/1471-2148-13-225</a>.
  ieee: S. Tragust, L. V. Ugelvig, M. Chapuisat, J. Heinze, and S. Cremer, “Pupal
    cocoons affect sanitary brood care and limit fungal infections in ant colonies,”
    <i>BMC Evolutionary Biology</i>, vol. 13, no. 1. BioMed Central, 2013.
  ista: Tragust S, Ugelvig LV, Chapuisat M, Heinze J, Cremer S. 2013. Pupal cocoons
    affect sanitary brood care and limit fungal infections in ant colonies. BMC Evolutionary
    Biology. 13(1), 225.
  mla: Tragust, Simon, et al. “Pupal Cocoons Affect Sanitary Brood Care and Limit
    Fungal Infections in Ant Colonies.” <i>BMC Evolutionary Biology</i>, vol. 13,
    no. 1, 225, BioMed Central, 2013, doi:<a href="https://doi.org/10.1186/1471-2148-13-225">10.1186/1471-2148-13-225</a>.
  short: S. Tragust, L.V. Ugelvig, M. Chapuisat, J. Heinze, S. Cremer, BMC Evolutionary
    Biology 13 (2013).
corr_author: '1'
date_created: 2018-12-11T11:56:46Z
date_published: 2013-10-14T00:00:00Z
date_updated: 2025-09-29T14:24:13Z
day: '14'
ddc:
- '570'
department:
- _id: SyCr
doi: 10.1186/1471-2148-13-225
ec_funded: 1
external_id:
  isi:
  - '000326620500001'
file:
- access_level: open_access
  checksum: c16ef36f2a10786a7885e19c4528d707
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:13:41Z
  date_updated: 2020-07-14T12:45:37Z
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  file_size: 281736
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file_date_updated: 2020-07-14T12:45:37Z
has_accepted_license: '1'
intvolume: '        13'
isi: 1
issue: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 25DC711C-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '243071'
  name: 'Social Vaccination in Ant Colonies: from Individual Mechanisms to Society
    Effects'
- _id: 25DAF0B2-B435-11E9-9278-68D0E5697425
  grant_number: CR-118/3-1
  name: Host-Parasite Coevolution
publication: BMC Evolutionary Biology
publication_status: published
publisher: BioMed Central
publist_id: '4647'
pubrep_id: '402'
quality_controlled: '1'
related_material:
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  - id: '9753'
    relation: research_data
    status: public
scopus_import: '1'
status: public
title: Pupal cocoons affect sanitary brood care and limit fungal infections in ant
  colonies
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 13
year: '2013'
...
