Disperse with the leaves and develop locally: a successful strategy for invasive leafminers?
2004
Gilbert, Marius | Castellana, F. | Svatoš, Aleš | Augustin, Sylvie | Grégoire, Jean-Claude | Department of Natural Products, . | Lutte biologique et Ecologie spatiale (LUBIES) ; Université libre de Bruxelles (ULB)-Ecole Interfacultaire de Bioingénieurs | Fonds national de la recherche scientifique | Max Planck Institute for Chemical Ecology ; Max-Planck-Gesellschaft | Unité de recherche Zoologie Forestière (URZF) ; Institut National de la Recherche Agronomique (INRA) | Czech Academy of Sciences [Prague] (CAS)
International audience
اظهر المزيد [+] اقل [-]إنجليزي. The very fast spread of the horse-chestnut leafminer Cameraria ohridella throughout Europe has been mainly attributed to a very high dispersal ability combined with wind or human passive transportationover long distances.However, the species effective dispersal characteristics remain to be better understood. Here we present data of experiments aiming to describe the decrease in population estimate as a function of distance to a population source. Firstly, we analysed the decrease in infestation level on horse-chestnut trees along three transect avenues departing from population source located in green areas in Brussels. Secondly, we describe the decrease in catches of pheromone traps disposed along two transects departing from an isolated group of infested chestnut trees. Results of these two experiments suggest that the active dispersal ability might be very short (approx. 100m), and that the largest part of the dispersal could be the result of infested leaves (or fragments) blown from population source during the winter.The evolutionary perspective of this hypothesis (i.e. do leafminers benefit from being dispersed with their leaves) and applied consequences for pest management at the scale of cities is discussed.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique