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Behavioural thermoregulation in Acyrthosiphon pisum (Homoptera: Aphididae): The effect of parasitism by Aphidius ervi (Hymenoptera: Braconidae)

Authordc.contributor.authorLagos, Nelson A. 
Authordc.contributor.authorFuentes-Contreras, Eduardo 
Authordc.contributor.authorBozinovic, Francisco 
Authordc.contributor.authorNiemeyer, Hermann M. 
Cita de ítemdc.identifier.citationJournal of Thermal Biology, Volumen 26, Issue 2, 2018, Pages 133-137
Abstractdc.description.abstractThe effects of parasitisation by Aphidius ervi on the thermoregulatory behaviour of the pea aphid Acyrtosiphon pisum were studied in alfalfa fields and in an experimental thermal gradient. In the field, mummies were found exclusively on the adaxial surface of the upper leaves, and aphids in the mid canopy. The adaxial surface of the upper leaves was ca. 2°C hotter that the mid-canopy. In the thermal gradient, the thermal effect (selected minus exposure temperature) was higher in magnitude in non-parasitised than in parasitised aphids; the thermal effects of both types of aphids were linearly and negatively correlated with exposure temperature (i.e. aphids showed negative thermal sensitivity). The thermal sensitivity of parasitised aphids was lower than that of non-parasitised aphids. The results are discussed in relation to hypotheses on factors governing the host-parasite relationship. © 2001 Elsevier Science Ltd.
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
Link to Licensedc.rights.uri
Sourcedc.sourceJournal of Thermal Biology
Keywordsdc.subjectAcyrthosiphon pisum
Keywordsdc.subjectAphidius ervi
Keywordsdc.subjectHost-parasitoid system
Keywordsdc.subjectThermal environments
Títulodc.titleBehavioural thermoregulation in Acyrthosiphon pisum (Homoptera: Aphididae): The effect of parasitism by Aphidius ervi (Hymenoptera: Braconidae)
Document typedc.typeArtículo de revista
Indexationuchile.indexArtículo de publicación SCOPUS

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile