Persistence and Recycling of Bioinsecticidal Bacillus thuringiensis subsp. israelensis Spores in Contrasting Environments: Evidence from Field Monitoring and Laboratory Experiments

Autor: Claire Duchet, Christophe Lagneau, Laurence Després, Margot Paris, Delphine Rey, Albane Marie, Jean-Philippe David, Yvon Perrin, Guillaume Tetreau, Gilles Besnard
Přispěvatelé: Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Laboratoire d'Ecologie Alpine (LECA), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA), Entente Interdépartementale pour la Démoustication du Littoral Méditerranéen, Centre national d'expertise des vecteurs, Montpellier (CNEV), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Université Joseph Fourier - Grenoble 1 (UJF), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique et Technologie (LMT), École normale supérieure - Cachan (ENS Cachan)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Aménagement, Développement, Environnement, Santé et Sociétés (ADES), Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Segalen - Bordeaux 2-Université Bordeaux Montaigne, Laboratoire de Biologie des Populations d'Altitude, Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Université Bordeaux Segalen - Bordeaux 2-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Mosquito Control
[SDV]Life Sciences [q-bio]
Bacillus thuringiensis
Soil Science
Environment
recycling
Persistence (computer science)
mosquito larvae
[SDV.EE.ECO]Life Sciences [q-bio]/Ecology
environment/Ecosystems
Botany
parasitic diseases
Animals
Organic matter
Ecology
Evolution
Behavior and Systematics
ComputingMilieux_MISCELLANEOUS
chemistry.chemical_classification
Spores
Bacterial
Bacillus thuringiensis subsp israelensis
geography
geography.geographical_feature_category
Ecology
biology
fungi
persistence
15. Life on land
biology.organism_classification
field
[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology
Spore
Salinity
Horticulture
Mosquito control
Culicidae
chemistry
Brackish marsh
Larva
[SDE]Environmental Sciences
France
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Microcosm
Zdroj: Microbial Ecology
Microbial Ecology, Springer Verlag, 2014, 67 (3), pp.576-586. ⟨10.1007/s00248-013-0360-7⟩
Microbial Ecology, Springer Verlag, 2014, 67 (3), pp.576-586
ISSN: 0095-3628
1432-184X
Popis: Sprays of commercial preparations of the bacterium Bacillus thuringiensis subsp. israelensis are widely used for the control of mosquito larvae. Despite an abundant literature on B. thuringiensis subsp. israelensis field efficiency on mosquito control, few studies have evaluated the fate of spores in the environment after treatments. In the present article, two complementary experiments were conducted to study the effect of different parameters on B. thuringiensis subsp. israelensis persistence and recycling, in field conditions and in the laboratory. First, we monitored B. thuringiensis subsp. israelensis persistence in the field in two contrasting regions in France: the Rhone-Alpes region, where mosquito breeding sites are temporary ponds under forest cover with large amounts of decaying leaf matter on the ground and the Mediterranean region characterized by open breeding sites such as brackish marshes. Viable B. thuringiensis subsp. israelensis spores can persist for months after a treatment, and their quantity is explained both by the vegetation type and by the number of local treatments. We found no evidence of B. thuringiensis subsp. israelensis recycling in the field. Then, we tested the effect of water level, substrate type, salinity and presence of mosquito larvae on the persistence/recycling of B. thuringiensis subsp. israelensis spores in controlled laboratory conditions (microcosms). We found no effect of change in water level or salinity on B. thuringiensis subsp. israelensis persistence over time (75 days). B. thuringiensis subsp. israelensis spores tended to persist longer in substrates containing organic matter compared to sand-only substrates. B. thuringiensis subsp. israelensis recycling only occurred in presence of mosquito larvae but was unrelated to the presence of organic matter.
Databáze: OpenAIRE
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