Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability

Parasitism is a key factor in the population dynamics of many herbivorous insects, although its impact on host populations varies widely, for instance, along latitudinal and altitudinal gradients. Understanding the sources of geographical variation in host–parasitoid interactions is crucial for reli...

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Autores: Stefanescu, Constantí, Colom, Pau, Barea-Azcón, José Miguel, Horsfield, David, Komac, Benjamin, Miralles, Adrià, Shaw, Mark R., Ubach, Andreu, Gutiérrez, David
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/272857
Acceso en línea:http://hdl.handle.net/10261/272857
Access Level:acceso abierto
Palabra clave:Altitudinal gradients
Host plant availability
Host–parasitoid interactions
Mediterranean basin
Nettle-feeding butterfly
Parasitism rate
Phenology
Trailing-edge populations
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
title Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
spellingShingle Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
Stefanescu, Constantí
Altitudinal gradients
Host plant availability
Host–parasitoid interactions
Mediterranean basin
Nettle-feeding butterfly
Parasitism rate
Phenology
Trailing-edge populations
title_short Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
title_full Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
title_fullStr Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
title_full_unstemmed Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
title_sort Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability
dc.creator.none.fl_str_mv Stefanescu, Constantí
Colom, Pau
Barea-Azcón, José Miguel
Horsfield, David
Komac, Benjamin
Miralles, Adrià
Shaw, Mark R.
Ubach, Andreu
Gutiérrez, David
author Stefanescu, Constantí
author_facet Stefanescu, Constantí
Colom, Pau
Barea-Azcón, José Miguel
Horsfield, David
Komac, Benjamin
Miralles, Adrià
Shaw, Mark R.
Ubach, Andreu
Gutiérrez, David
author_role author
author2 Colom, Pau
Barea-Azcón, José Miguel
Horsfield, David
Komac, Benjamin
Miralles, Adrià
Shaw, Mark R.
Ubach, Andreu
Gutiérrez, David
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Junta de Andalucía
Universidad de Granada
Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Altitudinal gradients
Host plant availability
Host–parasitoid interactions
Mediterranean basin
Nettle-feeding butterfly
Parasitism rate
Phenology
Trailing-edge populations
topic Altitudinal gradients
Host plant availability
Host–parasitoid interactions
Mediterranean basin
Nettle-feeding butterfly
Parasitism rate
Phenology
Trailing-edge populations
description Parasitism is a key factor in the population dynamics of many herbivorous insects, although its impact on host populations varies widely, for instance, along latitudinal and altitudinal gradients. Understanding the sources of geographical variation in host–parasitoid interactions is crucial for reliably predicting the future success of the interacting species under a context of global change. Here, we examine larval parasitism in the butterfly Aglais urticae in south-west Europe, where it is a mountain specialist. Larval nests were sampled over 2 years along altitudinal gradients in three Iberian mountain ranges, including the Sierra Nevada, home to its southernmost European population. Additional data on nettle condition and adult butterflies were obtained in the study areas. These data sources were used to investigate whether or not differences in parasitism rates are related to the geographical position and phenology of the host, and to the availability of the host plants. Phenological differences in the host populations between regions were related to the severity of summer drought and the corresponding differences in host plant availability. At the trailing-edge of its distribution, the butterfly's breeding season was restricted to the end of winter and spring, while in its northern Iberian range the season was prolonged until mid-summer. Although parasitism was an important source of mortality in all regions, parasitism rates and parasitoid richness were highest in the north and lowest in the south. Moreover, within a region, there was a notable increase in parasitism rates over time, which probably led to selection against an additional late summer host generation in northern regions. Conversely, the shorter breeding season in Sierra Nevada resulted in a loss of synchrony between the host and one important late season parasitoid, Sturmia bella, which may partly explain the high density of this butterfly species at the trailing-edge of its range. Our results support the key role of host phenology in accounting for differences in parasitism rates between populations. They also provide insights into how climate through host plant availability affects host phenology and, ultimately, the impact of parasitism on host populations.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/272857
url http://hdl.handle.net/10261/272857
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//CGL2014-57784-P
Stefanescu, Constantino; Colom, Pau; Barea-Azcón, José Miguel; Horsfield, David; Komac, Benjamin; Miralles, Adrià; Shaw, Mark R.; Ubach, Andreu; Gutiérrez, David; 2022; Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability [Dataset]; Dryad; Versión 2; https://doi.org/10.5061/dryad.gb5mkkwrn
https://doi.org/10.1111/1365-2656.13689
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availabilityStefanescu, ConstantíColom, PauBarea-Azcón, José MiguelHorsfield, DavidKomac, BenjaminMiralles, AdriàShaw, Mark R.Ubach, AndreuGutiérrez, DavidAltitudinal gradientsHost plant availabilityHost–parasitoid interactionsMediterranean basinNettle-feeding butterflyParasitism ratePhenologyTrailing-edge populationsParasitism is a key factor in the population dynamics of many herbivorous insects, although its impact on host populations varies widely, for instance, along latitudinal and altitudinal gradients. Understanding the sources of geographical variation in host–parasitoid interactions is crucial for reliably predicting the future success of the interacting species under a context of global change. Here, we examine larval parasitism in the butterfly Aglais urticae in south-west Europe, where it is a mountain specialist. Larval nests were sampled over 2 years along altitudinal gradients in three Iberian mountain ranges, including the Sierra Nevada, home to its southernmost European population. Additional data on nettle condition and adult butterflies were obtained in the study areas. These data sources were used to investigate whether or not differences in parasitism rates are related to the geographical position and phenology of the host, and to the availability of the host plants. Phenological differences in the host populations between regions were related to the severity of summer drought and the corresponding differences in host plant availability. At the trailing-edge of its distribution, the butterfly's breeding season was restricted to the end of winter and spring, while in its northern Iberian range the season was prolonged until mid-summer. Although parasitism was an important source of mortality in all regions, parasitism rates and parasitoid richness were highest in the north and lowest in the south. Moreover, within a region, there was a notable increase in parasitism rates over time, which probably led to selection against an additional late summer host generation in northern regions. Conversely, the shorter breeding season in Sierra Nevada resulted in a loss of synchrony between the host and one important late season parasitoid, Sturmia bella, which may partly explain the high density of this butterfly species at the trailing-edge of its range. Our results support the key role of host phenology in accounting for differences in parasitism rates between populations. They also provide insights into how climate through host plant availability affects host phenology and, ultimately, the impact of parasitism on host populations.Sierra Nevada fieldwork was partly supported by the Global Change Observatory of Sierra Nevada that is funded by the Andalusian Government (Ministry of Agriculture, Livestock, Fisheries and Sustainable Development) with the collaboration of the University of Granada. Funding for this research was provided by Ministerio de Ciencia e Innovación, R + D Programa Nacional, Proyecto I + D + I (grant CGL2014-57784-P to D.G.).Peer reviewedJohn Wiley & SonsJunta de AndalucíaUniversidad de GranadaMinisterio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/272857reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//CGL2014-57784-PStefanescu, Constantino; Colom, Pau; Barea-Azcón, José Miguel; Horsfield, David; Komac, Benjamin; Miralles, Adrià; Shaw, Mark R.; Ubach, Andreu; Gutiérrez, David; 2022; Larval parasitism in a specialist herbivore is explained by phenological synchrony and host plant availability [Dataset]; Dryad; Versión 2; https://doi.org/10.5061/dryad.gb5mkkwrnhttps://doi.org/10.1111/1365-2656.13689Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2728572026-05-22T06:33:51Z
score 15.812429

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