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Defensive behavior is linked to altered surface chemistry following infection in a termite society
- The care-kill response determines whether a sick individual will be treated or eliminated from an insect society, but little is known about the physiological underpinnings of this process. We exploited the stepwise infection dynamics of an entomopathogenic fungus in a termite to explore how care-kill transitions occur, and identify the chemical cues behind these shifts. We found collective responses towards pathogen-injected individuals to vary according to severity and timing of pathogen challenge, with elimination, via cannibalism, occurring sooner in response to a severe active infection. However, injection with inactivated fungal blastospores also resulted in increased albeit delayed cannibalism, even though it did not universally cause host death. This indicates that the decision to eliminate an individual is triggered before pathogen viability or terminal disease status has been established. We then compared the surface chemistry of differently challenged individuals, findingThe care-kill response determines whether a sick individual will be treated or eliminated from an insect society, but little is known about the physiological underpinnings of this process. We exploited the stepwise infection dynamics of an entomopathogenic fungus in a termite to explore how care-kill transitions occur, and identify the chemical cues behind these shifts. We found collective responses towards pathogen-injected individuals to vary according to severity and timing of pathogen challenge, with elimination, via cannibalism, occurring sooner in response to a severe active infection. However, injection with inactivated fungal blastospores also resulted in increased albeit delayed cannibalism, even though it did not universally cause host death. This indicates that the decision to eliminate an individual is triggered before pathogen viability or terminal disease status has been established. We then compared the surface chemistry of differently challenged individuals, finding increased amounts of long-chained methyl-branched alkanes with similar branching patterns in individuals injected with both dead and viable fungal blastospores, with the latter showing the largest increase. This coincided with the highest amounts of observed cannibalism as well as signs of severe moribundity. Our study provides new mechanistic insight into the emergent collective behaviors involved in the disease defense of a termite society.…
Autor*innen: | M. Alejandra Esparza-Mora, Tilottama Mazumdar, Shixiong Jiang, Renate Radek, Julian N. Thiem, Linshan Feng, Vesta Petrašiūnaitė, Ronald Banasiak, Marek Golian, Melanie Gleske, Lucas Christophe, Andreas Springer, Jan Buellesbach, Dino McMahonORCiD |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Scientific Reports |
Jahr der Erstveröffentlichung: | 2023 |
Organisationseinheit der BAM: | 4 Material und Umwelt |
4 Material und Umwelt / 4.6 Molekulare und angewandte Entomologie | |
Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
Verlag: | Macmillan Publishers Limited, part of Springer Nature |
Verlagsort: | London |
Jahrgang/Band: | 13 |
Ausgabe/Heft: | 1 |
Aufsatznummer: | 20606 |
Erste Seite: | 1 |
Letzte Seite: | 16 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Sanitär- und Kommunaltechnik; Umwelttechnik |
Freie Schlagwörter: | CHC; Pathogen; Social Immunity; Termite |
Themenfelder/Aktivitätsfelder der BAM: | Umwelt |
Umwelt / Umwelt-Material-Interaktionen | |
DOI: | 10.1038/s41598-023-42947-9 |
URN: | urn:nbn:de:kobv:b43-594468 |
ISSN: | 2045-2322 |
Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
Lizenz (Deutsch): | Creative Commons - CC BY - Namensnennung 4.0 International |
Datum der Freischaltung: | 30.01.2024 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 07.02.2024 |
Schriftenreihen ohne Nummerierung: | Wissenschaftliche Artikel der BAM |