Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system
- Autores
- Knapp, Michal; Řeřicha, Michal; Haelewaters, Danny; González, Ezequiel
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Winter represents a challenging period for insects inhabiting temperate regions. A plethora of studies have investigated how environmental conditions such as temperature affect insect overwintering success. However, only a few studies have focused on biotic factors and the mechanisms affecting the overwintering performance of insects. Here, we investigated the effects of the parasitic fungus Hesperomyces virescens on the overwintering performance and immune system functioning of the invasive ladybird Harmonia axyridis. Winter survival was significantly lower for infected than for uninfected ladybirds. Body mass loss during overwintering tends to be higher for infected individuals compared to uninfected ones and for larger ladybirds. In addition, parasitic infection reduced post-winter longevity without food in male but not female ladybirds. Total haemocyte and protein concentration as well as antimicrobial activity against Escherichia coli significantly decreased during ladybird overwintering. However, haemolymph parameters were only poorly affected by Hesperomyces infection, with the exception of antimicrobial activity against E. coli that tended to be higher in infected ladybirds. Interestingly, none of the pre-winter haemolymph parameters were good predictors of ladybird winter survival. Overall, our results indicate that energy exhaustion unrelated to immune system challenge is the most probable explanation for increased overwintering mortality in infected ladybirds.
Fil: Knapp, Michal. Czech University Of Life Sciences Prague; República Checa
Fil: Řeřicha, Michal. Czech University Of Life Sciences Prague; República Checa
Fil: Haelewaters, Danny. University of Ghent; Bélgica
Fil: González, Ezequiel. Czech University Of Life Sciences Prague; República Checa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina - Materia
-
BODY CONDITION
ECOPHYSIOLOGY
MICROSPORIDIA LOAD
PATHOGEN
SEXUALLY TRANSMITTED DISEASES
STRESS RESISTANCE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/200617
Ver los metadatos del registro completo
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Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune systemKnapp, MichalŘeřicha, MichalHaelewaters, DannyGonzález, EzequielBODY CONDITIONECOPHYSIOLOGYMICROSPORIDIA LOADPATHOGENSEXUALLY TRANSMITTED DISEASESSTRESS RESISTANCEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Winter represents a challenging period for insects inhabiting temperate regions. A plethora of studies have investigated how environmental conditions such as temperature affect insect overwintering success. However, only a few studies have focused on biotic factors and the mechanisms affecting the overwintering performance of insects. Here, we investigated the effects of the parasitic fungus Hesperomyces virescens on the overwintering performance and immune system functioning of the invasive ladybird Harmonia axyridis. Winter survival was significantly lower for infected than for uninfected ladybirds. Body mass loss during overwintering tends to be higher for infected individuals compared to uninfected ones and for larger ladybirds. In addition, parasitic infection reduced post-winter longevity without food in male but not female ladybirds. Total haemocyte and protein concentration as well as antimicrobial activity against Escherichia coli significantly decreased during ladybird overwintering. However, haemolymph parameters were only poorly affected by Hesperomyces infection, with the exception of antimicrobial activity against E. coli that tended to be higher in infected ladybirds. Interestingly, none of the pre-winter haemolymph parameters were good predictors of ladybird winter survival. Overall, our results indicate that energy exhaustion unrelated to immune system challenge is the most probable explanation for increased overwintering mortality in infected ladybirds.Fil: Knapp, Michal. Czech University Of Life Sciences Prague; República ChecaFil: Řeřicha, Michal. Czech University Of Life Sciences Prague; República ChecaFil: Haelewaters, Danny. University of Ghent; BélgicaFil: González, Ezequiel. Czech University Of Life Sciences Prague; República Checa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaThe Royal Society2022-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/200617Knapp, Michal; Řeřicha, Michal; Haelewaters, Danny; González, Ezequiel; Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 289; 1971; 3-2022; 1-100962-84521471-2954CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2021.2538info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rspb.2021.2538info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:58:26Zoai:ri.conicet.gov.ar:11336/200617instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:58:26.538CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
title |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
spellingShingle |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system Knapp, Michal BODY CONDITION ECOPHYSIOLOGY MICROSPORIDIA LOAD PATHOGEN SEXUALLY TRANSMITTED DISEASES STRESS RESISTANCE |
title_short |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
title_full |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
title_fullStr |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
title_full_unstemmed |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
title_sort |
Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system |
dc.creator.none.fl_str_mv |
Knapp, Michal Řeřicha, Michal Haelewaters, Danny González, Ezequiel |
author |
Knapp, Michal |
author_facet |
Knapp, Michal Řeřicha, Michal Haelewaters, Danny González, Ezequiel |
author_role |
author |
author2 |
Řeřicha, Michal Haelewaters, Danny González, Ezequiel |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
BODY CONDITION ECOPHYSIOLOGY MICROSPORIDIA LOAD PATHOGEN SEXUALLY TRANSMITTED DISEASES STRESS RESISTANCE |
topic |
BODY CONDITION ECOPHYSIOLOGY MICROSPORIDIA LOAD PATHOGEN SEXUALLY TRANSMITTED DISEASES STRESS RESISTANCE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Winter represents a challenging period for insects inhabiting temperate regions. A plethora of studies have investigated how environmental conditions such as temperature affect insect overwintering success. However, only a few studies have focused on biotic factors and the mechanisms affecting the overwintering performance of insects. Here, we investigated the effects of the parasitic fungus Hesperomyces virescens on the overwintering performance and immune system functioning of the invasive ladybird Harmonia axyridis. Winter survival was significantly lower for infected than for uninfected ladybirds. Body mass loss during overwintering tends to be higher for infected individuals compared to uninfected ones and for larger ladybirds. In addition, parasitic infection reduced post-winter longevity without food in male but not female ladybirds. Total haemocyte and protein concentration as well as antimicrobial activity against Escherichia coli significantly decreased during ladybird overwintering. However, haemolymph parameters were only poorly affected by Hesperomyces infection, with the exception of antimicrobial activity against E. coli that tended to be higher in infected ladybirds. Interestingly, none of the pre-winter haemolymph parameters were good predictors of ladybird winter survival. Overall, our results indicate that energy exhaustion unrelated to immune system challenge is the most probable explanation for increased overwintering mortality in infected ladybirds. Fil: Knapp, Michal. Czech University Of Life Sciences Prague; República Checa Fil: Řeřicha, Michal. Czech University Of Life Sciences Prague; República Checa Fil: Haelewaters, Danny. University of Ghent; Bélgica Fil: González, Ezequiel. Czech University Of Life Sciences Prague; República Checa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina |
description |
Winter represents a challenging period for insects inhabiting temperate regions. A plethora of studies have investigated how environmental conditions such as temperature affect insect overwintering success. However, only a few studies have focused on biotic factors and the mechanisms affecting the overwintering performance of insects. Here, we investigated the effects of the parasitic fungus Hesperomyces virescens on the overwintering performance and immune system functioning of the invasive ladybird Harmonia axyridis. Winter survival was significantly lower for infected than for uninfected ladybirds. Body mass loss during overwintering tends to be higher for infected individuals compared to uninfected ones and for larger ladybirds. In addition, parasitic infection reduced post-winter longevity without food in male but not female ladybirds. Total haemocyte and protein concentration as well as antimicrobial activity against Escherichia coli significantly decreased during ladybird overwintering. However, haemolymph parameters were only poorly affected by Hesperomyces infection, with the exception of antimicrobial activity against E. coli that tended to be higher in infected ladybirds. Interestingly, none of the pre-winter haemolymph parameters were good predictors of ladybird winter survival. Overall, our results indicate that energy exhaustion unrelated to immune system challenge is the most probable explanation for increased overwintering mortality in infected ladybirds. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/200617 Knapp, Michal; Řeřicha, Michal; Haelewaters, Danny; González, Ezequiel; Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 289; 1971; 3-2022; 1-10 0962-8452 1471-2954 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/200617 |
identifier_str_mv |
Knapp, Michal; Řeřicha, Michal; Haelewaters, Danny; González, Ezequiel; Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 289; 1971; 3-2022; 1-10 0962-8452 1471-2954 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2021.2538 info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rspb.2021.2538 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
The Royal Society |
publisher.none.fl_str_mv |
The Royal Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613741278134272 |
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13.070432 |