Jean-François Germain

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Mealybugs (Hemiptera: Pseudococcidae) are pests constraining the international trade of Brazilian table grapes. They damage grapes by transmitting viruses and toxins, causing defoliation, chlorosis, and vigor losses and favoring the development of sooty mold. Difficulties in mealybug identification remain an obstacle to the adequate management of these(More)
We consider an estimator b β n (t) defined as the element φ ∈ Φ minimizing a contrast process Λn(φ, t) for each t. We give some general results for deriving the weak convergence of √ n(b β n − β) in the space of bounded functions, where, for each t, β(t) is the φ ∈ Φ minimizing the limit of Λn(φ, t) as n → ∞. These results are applied in the context of(More)
Pseudococcus comstocki (Hemiptera: Pseudococcidae) is a mealybug species native to Eastern Asia and present as an invasive pest in northern Italy and southern France since the start of the century. It infests apple and pear trees, grapevines and some ornamental trees. Biocontrol programmes against this pest proved successful in central Asia and North(More)
Brazil has the greatest insect diversity in the world; however, little is known about its scale insect species (Hemiptera: Coccomorpha). Mealybugs (Pseudococcidae) have been found in at least 50% of persimmon orchards Diospyros kaki L. in the southern part of the country. In this study three new mealybug species on persimmon trees located in the Serra(More)
Sélection de modèlesà l'aide des chemins de régularisation pour l'objectivation mono et multi-prestations. Applicationà l'agrément de conduite. particulier mes chers parents qui m'ont toujours suivi et encouragé. Désoléà tous de vous avoir seriné avec acharnement avec mes travaux auxquels vous ne com-preniez parfois pas grand chose. Merci pour votre infinie(More)
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