Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?

Arthropods at the surface of plants live in particular microclimatic conditions that can differ from atmospheric conditions. The temperature of plant leaves can deviate from air temperature, and leaf temperature influences the eco-physiology of small insects. The activity of insects feeding on leaf...

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Main Authors: Thomas Cahon, Robin Caillon, Sylvain Pincebourde
Format: Article
Language:English
Published: MDPI AG 2018-03-01
Series:Insects
Subjects:
Online Access:http://www.mdpi.com/2075-4450/9/1/34
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author Thomas Cahon
Robin Caillon
Sylvain Pincebourde
author_facet Thomas Cahon
Robin Caillon
Sylvain Pincebourde
author_sort Thomas Cahon
collection DOAJ
description Arthropods at the surface of plants live in particular microclimatic conditions that can differ from atmospheric conditions. The temperature of plant leaves can deviate from air temperature, and leaf temperature influences the eco-physiology of small insects. The activity of insects feeding on leaf tissues, may, however, induce changes in leaf surface temperatures, but this effect was only rarely demonstrated. Using thermography analysis of leaf surfaces under controlled environmental conditions, we quantified the impact of presence of apple green aphids on the temperature distribution of apple leaves during early infestation. Aphids induced a slight change in leaf surface temperature patterns after only three days of infestation, mostly due to the effect of aphids on the maximal temperature that can be found at the leaf surface. Aphids may induce stomatal closure, leading to a lower transpiration rate. This effect was local since aphids modified the configuration of the temperature distribution over leaf surfaces. Aphids were positioned at temperatures near the maximal leaf surface temperatures, thus potentially experiencing the thermal changes. The feedback effect of feeding activity by insects on their host plant can be important and should be quantified to better predict the response of phytophagous insects to environmental changes.
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spelling doaj.art-7e06abbdffee4a47a4d8553f0e5264612022-12-21T18:32:05ZengMDPI AGInsects2075-44502018-03-01913410.3390/insects9010034insects9010034Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?Thomas Cahon0Robin Caillon1Sylvain Pincebourde2Institut de Recherche sur la Biologie de l’Insecte, UMR 7261, CNRS, Université de Tours, 37200 Tours, FranceInstitut de Recherche sur la Biologie de l’Insecte, UMR 7261, CNRS, Université de Tours, 37200 Tours, FranceInstitut de Recherche sur la Biologie de l’Insecte, UMR 7261, CNRS, Université de Tours, 37200 Tours, FranceArthropods at the surface of plants live in particular microclimatic conditions that can differ from atmospheric conditions. The temperature of plant leaves can deviate from air temperature, and leaf temperature influences the eco-physiology of small insects. The activity of insects feeding on leaf tissues, may, however, induce changes in leaf surface temperatures, but this effect was only rarely demonstrated. Using thermography analysis of leaf surfaces under controlled environmental conditions, we quantified the impact of presence of apple green aphids on the temperature distribution of apple leaves during early infestation. Aphids induced a slight change in leaf surface temperature patterns after only three days of infestation, mostly due to the effect of aphids on the maximal temperature that can be found at the leaf surface. Aphids may induce stomatal closure, leading to a lower transpiration rate. This effect was local since aphids modified the configuration of the temperature distribution over leaf surfaces. Aphids were positioned at temperatures near the maximal leaf surface temperatures, thus potentially experiencing the thermal changes. The feedback effect of feeding activity by insects on their host plant can be important and should be quantified to better predict the response of phytophagous insects to environmental changes.http://www.mdpi.com/2075-4450/9/1/34Aphis pomiappleherbivoryleaf temperaturestomatal behaviorthermal heterogeneitythermography
spellingShingle Thomas Cahon
Robin Caillon
Sylvain Pincebourde
Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
Insects
Aphis pomi
apple
herbivory
leaf temperature
stomatal behavior
thermal heterogeneity
thermography
title Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
title_full Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
title_fullStr Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
title_full_unstemmed Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
title_short Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
title_sort do aphids alter leaf surface temperature patterns during early infestation
topic Aphis pomi
apple
herbivory
leaf temperature
stomatal behavior
thermal heterogeneity
thermography
url http://www.mdpi.com/2075-4450/9/1/34
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AT robincaillon doaphidsalterleafsurfacetemperaturepatternsduringearlyinfestation
AT sylvainpincebourde doaphidsalterleafsurfacetemperaturepatternsduringearlyinfestation