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Data from: Defensive aphid symbiont Hamiltonella defensa effects on Aphelinus glycinis and Aphelinus atriplicis

Published by Agricultural Research Service | Department of Agriculture | Metadata Last Checked: January 27, 2026 | Last Modified: 2025-11-21
Endosymbiont interactions with hosts have important effects on fitness, including the fitness of many pest and beneficial species. Among these interactions, facultative endosymbiotic bacteria can protect aphids from parasitoids. Aphis craccivora and Acyrthosiphon pisum can harbor the symbiotic bacteria Hamiltonella defensa and its bacteriophage APSE. Infection by H. defensa defends these aphids against some but not all parasitoid species in the hymenopteran family Braconidae. Here, we report results on the effect of H. defensa on parasitism of these aphids by species in the other major lineage of aphid parasitoids, Aphelinus species in the family Aphelinidae. Parasitism of aphids infected with H. defensa /APSE by two Aphelinus species did not differ from that of uninfected aphids. While Aphelinus atriplicis showed no difference in fitness components between infected and uninfected aphids, Aphelinus glycinis actually produced more adult progeny and larger female progeny on infected than on uninfected aphids. Aphelinus glycinis may increase host quality for itself by changing the titer of nutritional versus protective bacteria in such a way that aphids infected with H. defensa can be made more suitable for parasitoid development than uninfected aphids. Our results and reasoning suggest that these Aphelinus species may be less prone to harm by H. defensa /APSE that affect eggs because they have anhydropic, heavily chorionated eggs, which may not absorb toxins during embryogenesis. See the included methods-DefensiveAphidSymbiont.txt file for more information on the methods and design structure of this study.

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Complete Metadata
@type dcat:Dataset
accessLevel public
accrualPeriodicity irregular
bureauCode 
                                            [
  "005:18"
]
contactPoint 
                                            {
  "fn": "Hopper, Keith R.",
  "hasEmail": "mailto:Keith.Hopper@ars.usda.gov"
}
description <p>Endosymbiont interactions with hosts have important effects on fitness, including the fitness of many pest and beneficial species. Among these interactions, facultative endosymbiotic bacteria can protect aphids from parasitoids. <em>Aphis craccivora</em> and <em>Acyrthosiphon pisum</em> can harbor the symbiotic bacteria <em>Hamiltonella defensa</em> and its bacteriophage APSE. Infection by <em>H. defensa</em> defends these aphids against some but not all parasitoid species in the hymenopteran family Braconidae. Here, we report results on the effect of <em>H. defensa</em> on parasitism of these aphids by species in the other major lineage of aphid parasitoids, <em>Aphelinus</em> species in the family Aphelinidae. Parasitism of aphids infected with <em>H. defensa</em> /APSE by two <em>Aphelinus</em> species did not differ from that of uninfected aphids. While <em>Aphelinus atriplicis</em> showed no difference in fitness components between infected and uninfected aphids, <em>Aphelinus glycinis</em> actually produced more adult progeny and larger female progeny on infected than on uninfected aphids. <em>Aphelinus glycinis</em> may increase host quality for itself by changing the titer of nutritional versus protective bacteria in such a way that aphids infected with <em>H. defensa</em> can be made more suitable for parasitoid development than uninfected aphids. Our results and reasoning suggest that these Aphelinus species may be less prone to harm by <em>H. defensa</em> /APSE that affect eggs because they have anhydropic, heavily chorionated eggs, which may not absorb toxins during embryogenesis. </p> <p>See the included methods-DefensiveAphidSymbiont.txt file for more information on the methods and design structure of this study.</p>
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "Parasitism_Hamiltonella.csv",
    "format": "csv",
    "mediaType": "text/plain",
    "downloadURL": "https://ndownloader.figshare.com/files/44335895"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Data Dictionary -  Defensive aphid symbiont Hamitonella defensa effects on Aphelinus glycinis and Aphelinus atriplicis_1.csv",
    "format": "csv",
    "mediaType": "text/plain",
    "downloadURL": "https://ndownloader.figshare.com/files/44335898"
  },
  {
    "@type": "dcat:Distribution",
    "title": "file-list-DefensiveAphidSymbiont.txt",
    "format": "txt",
    "mediaType": "text/plain",
    "downloadURL": "https://ndownloader.figshare.com/files/44335901"
  },
  {
    "@type": "dcat:Distribution",
    "title": "methods-DefensiveAphidSymbiont.txt",
    "format": "txt",
    "mediaType": "text/plain",
    "downloadURL": "https://ndownloader.figshare.com/files/44335904"
  }
]
identifier 10.15482/USDA.ADC/1356635
keyword 
                                            [
  "APSE",
  "ARS",
  "Acyrthosiphon pisum",
  "Aphelinus atriplicis",
  "Aphelinus glycinis",
  "Aphis craccivora",
  "China",
  "Hamiltonella defensa",
  "NP304",
  "Republic of Georgia",
  "aphid endosymbionts",
  "beneficial insects",
  "biological control",
  "data.gov",
  "introduced species"
]
license https://www.usa.gov/publicdomain/label/1.0/
modified 2025-11-21
programCode 
                                            [
  "005:040"
]
publisher 
                                            {
  "name": "Agricultural Research Service",
  "@type": "org:Organization"
}
spatial 
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temporal 2000-06-01/2007-07-01
title Data from: Defensive aphid symbiont Hamiltonella defensa effects on Aphelinus glycinis and Aphelinus atriplicis

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