Cargando…

The preference–performance relationship as a means of classifying parasitoids according to their specialization degree

Host range in parasitoids could be described by the preference–performance hypothesis (PPH) where preference is defined as host acceptance and performance is defined as the sum of all species on which parasitoid offspring can complete their life cycle. The PPH predicts that highly suitable hosts wil...

Descripción completa

Detalles Bibliográficos
Autores principales: Monticelli, Lucie S., Nguyen, Le Thu Ha, Amiens‐Desneux, Edwige, Luo, Chen, Lavoir, Anne‐violette, Gatti, Jean‐Luc, Desneux, Nicolas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6708433/
https://www.ncbi.nlm.nih.gov/pubmed/31462919
http://dx.doi.org/10.1111/eva.12822
_version_ 1783446009737641984
author Monticelli, Lucie S.
Nguyen, Le Thu Ha
Amiens‐Desneux, Edwige
Luo, Chen
Lavoir, Anne‐violette
Gatti, Jean‐Luc
Desneux, Nicolas
author_facet Monticelli, Lucie S.
Nguyen, Le Thu Ha
Amiens‐Desneux, Edwige
Luo, Chen
Lavoir, Anne‐violette
Gatti, Jean‐Luc
Desneux, Nicolas
author_sort Monticelli, Lucie S.
collection PubMed
description Host range in parasitoids could be described by the preference–performance hypothesis (PPH) where preference is defined as host acceptance and performance is defined as the sum of all species on which parasitoid offspring can complete their life cycle. The PPH predicts that highly suitable hosts will be preferred by ovipositing females. However, generalist parasitoids may not conform to this hypothesis if they attack a large range of hosts of varying suitability. Under laboratory conditions, we tested the PPH relationship of three aphid parasitoids currently considered as generalist species (Aphelinus abdominalis, Aphidius ervi, Diaeretiella rapae). As expected, the three parasitoids species showed low selectivity, i.e., females stung all aphid species encountered (at least in some extent). However, depending on the parasitoid species, only 42%–58% of aphid species enabled producing parasitoid offspring. We did not find a correlation between the extent of preference and the performance of three generalist aphid parasitoids. For A. ervi, host phylogeny is also important as females showed higher attack and developmental rates on hosts closely related to the most suitable one. In addition, traits such as (a) the presence of protective secondary endosymbionts, for example, Hamiltonella defensa detected in Aphis fabae and Metopolophium dirhodum and (b) the sequestration of plant toxins as defense mechanism against parasitism, for example, in Aphis nerii and Brevicoryne brassicae, were likely at play to some extent in narrowing parasitoid host range. The lack of PPH relationship involved a low selectivity leading to a high adaptability, as well as selection pressure; the combination of which enabled the production of offspring in a new host species or a new environment. Testing for PPH relationships in parasitoids may provide useful cues to classify parasitoids in terms of specialization degree.
format Online
Article
Text
id pubmed-6708433
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher John Wiley and Sons Inc.
record_format MEDLINE/PubMed
spelling pubmed-67084332019-08-28 The preference–performance relationship as a means of classifying parasitoids according to their specialization degree Monticelli, Lucie S. Nguyen, Le Thu Ha Amiens‐Desneux, Edwige Luo, Chen Lavoir, Anne‐violette Gatti, Jean‐Luc Desneux, Nicolas Evol Appl Original Articles Host range in parasitoids could be described by the preference–performance hypothesis (PPH) where preference is defined as host acceptance and performance is defined as the sum of all species on which parasitoid offspring can complete their life cycle. The PPH predicts that highly suitable hosts will be preferred by ovipositing females. However, generalist parasitoids may not conform to this hypothesis if they attack a large range of hosts of varying suitability. Under laboratory conditions, we tested the PPH relationship of three aphid parasitoids currently considered as generalist species (Aphelinus abdominalis, Aphidius ervi, Diaeretiella rapae). As expected, the three parasitoids species showed low selectivity, i.e., females stung all aphid species encountered (at least in some extent). However, depending on the parasitoid species, only 42%–58% of aphid species enabled producing parasitoid offspring. We did not find a correlation between the extent of preference and the performance of three generalist aphid parasitoids. For A. ervi, host phylogeny is also important as females showed higher attack and developmental rates on hosts closely related to the most suitable one. In addition, traits such as (a) the presence of protective secondary endosymbionts, for example, Hamiltonella defensa detected in Aphis fabae and Metopolophium dirhodum and (b) the sequestration of plant toxins as defense mechanism against parasitism, for example, in Aphis nerii and Brevicoryne brassicae, were likely at play to some extent in narrowing parasitoid host range. The lack of PPH relationship involved a low selectivity leading to a high adaptability, as well as selection pressure; the combination of which enabled the production of offspring in a new host species or a new environment. Testing for PPH relationships in parasitoids may provide useful cues to classify parasitoids in terms of specialization degree. John Wiley and Sons Inc. 2019-06-17 /pmc/articles/PMC6708433/ /pubmed/31462919 http://dx.doi.org/10.1111/eva.12822 Text en © 2019 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Monticelli, Lucie S.
Nguyen, Le Thu Ha
Amiens‐Desneux, Edwige
Luo, Chen
Lavoir, Anne‐violette
Gatti, Jean‐Luc
Desneux, Nicolas
The preference–performance relationship as a means of classifying parasitoids according to their specialization degree
title The preference–performance relationship as a means of classifying parasitoids according to their specialization degree
title_full The preference–performance relationship as a means of classifying parasitoids according to their specialization degree
title_fullStr The preference–performance relationship as a means of classifying parasitoids according to their specialization degree
title_full_unstemmed The preference–performance relationship as a means of classifying parasitoids according to their specialization degree
title_short The preference–performance relationship as a means of classifying parasitoids according to their specialization degree
title_sort preference–performance relationship as a means of classifying parasitoids according to their specialization degree
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6708433/
https://www.ncbi.nlm.nih.gov/pubmed/31462919
http://dx.doi.org/10.1111/eva.12822
work_keys_str_mv AT monticellilucies thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT nguyenlethuha thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT amiensdesneuxedwige thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT luochen thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT lavoiranneviolette thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT gattijeanluc thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT desneuxnicolas thepreferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT monticellilucies preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT nguyenlethuha preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT amiensdesneuxedwige preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT luochen preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT lavoiranneviolette preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT gattijeanluc preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree
AT desneuxnicolas preferenceperformancerelationshipasameansofclassifyingparasitoidsaccordingtotheirspecializationdegree