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Place et rôle des pesticides dans la surmortalité des abeilles | Sciences et Démocratie

Place et rôle des pesticides dans la surmortalité des abeilles

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Mots-clés : abeilles pesticides
Crop Dusting

La notion de risque encouru par les abeilles domestiques dépend de la toxicité intrinsèque de l’insecticide ainsi que de l’exposition de l’abeille à celui-ci. Cette exposition varie avec la rémanence de l’insecticide dans les sols (pour les futures plantes), les plantes traitées et le corps de l’abeille. L’enrobage de la graine des plantes par des insecticides systémiques est une innovation certaine pour l’agriculture, mais s’agit-il d’un progrès ou d'une régression en faveur de la protection des abeilles ? Si le Gaucho, le Régent étaient déjà des insecticides systémiques, le thiaméthoxam en est un nouveau dont l’autorisation provisoire a réveillé de sombres souvenirs aux apiculteurs…

Cliquez sur l'image ci-dessous pour accéder au schéma interactif de l'action des pesticides sur les abeilles.

actant.jpg

Au sommaire :

very toxic...

Dangerosité intrinsèque des pesticides

par SciencesPo Controverses

Quels sont les effets sur les abeilles des molécules actives des pesticides et de leurs produits de dégradation ?» lire la suite

Abeilles et pesticidesAbeilles et pesticidescomprendrecomprendretout publictout public0
exposed bee hive

Les modes d'exposition des abeilles aux pesticides

par SciencesPo Controverses

Différentes voies doivent être considérées : contact direct, ingestion mais aussi exposition indirecte...» lire la suite

Abeilles et pesticidesAbeilles et pesticidescomprendrecomprendretout publictout public2
Colorful Beehives

Une conjonction de facteurs à l'origine de la surmortalité

par SciencesPo Controverses

L'hypothèse la plus largement admise est celle d'une conjugaison de plusieurs facteurs, incluant ou non les pesticides selon les sources...» lire la suite

Abeilles et pesticidesAbeilles et pesticidesdécouvrirdécouvrirtout publictout public1
Seeders

Des innovations techniques en cause ?

par SciencesPo Controverses

Les firmes innovent pour délivrer leur pesticide de façon toujours plus précise et efficace. Mais pour les abeilles, ces innovations constituent-elles un progrès ou une régression ?» lire la suite

Abeilles et pesticidesAbeilles et pesticidescomprendrecomprendretout publictout public0

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Commentaires

Exprimez-vous ! L'association Sciences et Démocratie se bat pour donner la parole aux citoyens dans les débats « science société ». Vos messages renforceront notre motivation.

sur la systémie des insecticides incriminés

une erreur je crois dans votre paragraphe d'introduction : si l'imidaclopride, matière active du Gaucho, est effectivement systémique, ce n'est pas le cas du fipronil, matière active du Régent, considéré comme un très mauvais systémique (demandez au Pr Ravanel de l'Université de Grenoble, il pourra vous donner les quantités de fipronil qui se retrouvent dans le pollen (exemple du tournesol ou du maïs) à partir de semences traitées au Régent... mais peut-être que ça rentre dans la question des modes d'exposition des abeilles aux insecticides en TS...

Sinon bravo pour votre dossier !!
Un livre à vous conseiller pour mettre dans votre liste de référence : "Abeille, l'imposture écologique", de Gilles Rivière, qui présente un aspect trop longtemps occulé de ce dossier de la surmortalité des abeilles.
Cordialement

Re: sur la systémie...

Bonjour "anonyme éclairé",

En fait, dans l'article Des innovations techniques en cause ? les auteurs parlent de systémie relative à propos du fipronil. Cette formulation vous paraît-elle acceptable ?


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