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Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector

The leafhopper Scaphoideus titanus is the vector of a major phytoplasma grapevine disease, Flavescence dorée. The vector’s distribution is in Eastern and Northern Europe, and its population dynamics varies as a function of vineyard latitude. We tested the hypothesis that hatching dynamics are cued b...

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Detalles Bibliográficos
Autores principales: Chuche, Julien, Thiéry, Denis
Formato: Texto
Lenguaje:English
Publicado: Springer-Verlag 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2705727/
https://www.ncbi.nlm.nih.gov/pubmed/19401803
http://dx.doi.org/10.1007/s00114-009-0541-x
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author Chuche, Julien
Thiéry, Denis
author_facet Chuche, Julien
Thiéry, Denis
author_sort Chuche, Julien
collection PubMed
description The leafhopper Scaphoideus titanus is the vector of a major phytoplasma grapevine disease, Flavescence dorée. The vector’s distribution is in Eastern and Northern Europe, and its population dynamics varies as a function of vineyard latitude. We tested the hypothesis that hatching dynamics are cued by cold temperatures observed in winter. We exposed eggs from a natural population to simulated “cold” and “mild” winters and varied the exposure time at 5 °C from 0 to 63 days. We show that temperature cooling mainly affected the onset of hatching and is negatively correlated to the cold time exposure. The majority of hatchings occurred more quickly in cold rather than in mild winter simulated conditions, but there was no significant difference between the duration of hatching of eggs whatever the cold time exposure. In agreement with the Northern American origin of the vector, the diapause termination and thus the timing regulation of egg hatching require cold winters.
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spelling pubmed-27057272009-07-07 Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector Chuche, Julien Thiéry, Denis Naturwissenschaften Original Paper The leafhopper Scaphoideus titanus is the vector of a major phytoplasma grapevine disease, Flavescence dorée. The vector’s distribution is in Eastern and Northern Europe, and its population dynamics varies as a function of vineyard latitude. We tested the hypothesis that hatching dynamics are cued by cold temperatures observed in winter. We exposed eggs from a natural population to simulated “cold” and “mild” winters and varied the exposure time at 5 °C from 0 to 63 days. We show that temperature cooling mainly affected the onset of hatching and is negatively correlated to the cold time exposure. The majority of hatchings occurred more quickly in cold rather than in mild winter simulated conditions, but there was no significant difference between the duration of hatching of eggs whatever the cold time exposure. In agreement with the Northern American origin of the vector, the diapause termination and thus the timing regulation of egg hatching require cold winters. Springer-Verlag 2009-04-29 2009-07 /pmc/articles/PMC2705727/ /pubmed/19401803 http://dx.doi.org/10.1007/s00114-009-0541-x Text en © The Author(s) 2009
spellingShingle Original Paper
Chuche, Julien
Thiéry, Denis
Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
title Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
title_full Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
title_fullStr Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
title_full_unstemmed Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
title_short Cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
title_sort cold winter temperatures condition the egg-hatching dynamics of a grape disease vector
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2705727/
https://www.ncbi.nlm.nih.gov/pubmed/19401803
http://dx.doi.org/10.1007/s00114-009-0541-x
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