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Titre :
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Patterns in Flight Phenology of a Migrant Cereal Aphid Species
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Auteurs :
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M. Hullé ;
S. Coquio ;
V. Laperche
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Type de document :
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article/chapitre/communication
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Année de publication :
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1994
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Format :
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49-58
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Langues:
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= Anglais
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Mots-clés:
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Flight Phenology
;
Multivariate Analysis
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Rhopalosiphum-Padi
;
Suction Trap
;
Temperature Influence
;
Piegeage
;
Piege a succion
;
Analyse multivariable
;
Analyse discriminante
;
Deplacement
;
Temperature
;
Aphididae
;
Rhopalosiphum padi
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Résumé :
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1. Flight phenologies of the migrant cereal aphid Rhopalosiphum padi, as indicated by suction trap catches throughout France between 1978 and 1988, were compared using multivariate methods. 2. Cluster analysis identified seven main patterns of flight phenology for this species. 3. Discriminant analysis of patterns using monthly mean temperatures allowed the effect of weather on patterns of flight phenology to be identified. 4. The range of life-cycle strategies displayed by R. padi in France can explain partially the different types of patterns and their variations in space and time. 5. In the regions characterized by a balance between holocycly and anholocycly, the annual variability of patterns in flight phenologies decreases with the increasing prevalence of holocycly. 6. Temperature plays a more important role for the prediction of likely patterns when a high proportion of the population is anholocyclic. 7. The biological status of R. padi, and therefore the biological functions of migrations, have to be specified to improve interpretation of phenological analysis in pest forecasts relating to the spread of barley yellow dwarf virus in winter cereal crops.
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Source :
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Journal of Applied Ecology - 0021-8901, vol. 31, n° 1
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