Parmi les m\u00e9thodes permettant de d\u00e9tecter l\u2019infestation par le varroa dans les ruches, on a \u00e9galement sugg\u00e9r\u00e9 l\u2019utilisation de l\u2019anhydride carbonique. Cette m\u00e9thode non l\u00e9tale consiste \u00e0 anesth\u00e9sier les abeilles par l\u2019injection de CO2 dans un r\u00e9cipient et \u00e0 compter les acariens expuls\u00e9s des insectes. Mais selon une \u00e9tude r\u00e9cente men\u00e9e aux \u00c9tats-Unis, l\u2019efficacit\u00e9 de cette m\u00e9thode est faible, ce qui conduit \u00e0 des estimations inexactes du taux d\u2019infestation. Les chercheurs ont conclu que les m\u00e9thodes les plus fiables restent le lavage des abeilles \u00e0 l\u2019eau savonneuse ou \u00e0 l\u2019alcool. En revanche, selon une autre \u00e9tude, la m\u00e9thode la plus efficace reste la manipulation du sucre en poudre.<\/p>\n\n\n\n
Acc\u00e9dez au document scientifique sur la m\u00e9thode \u00e0 base de dioxyde de carbone ici<\/a><\/strong>, et sur du sucre glace ici<\/a><\/strong>.<\/p>\n\n\n\n <\/p>","protected":false},"excerpt":{"rendered":" Among the methods for monitoring varroa infestation into beehive, the use of carbon dioxide has also been suggested. This non-lethal method consists in anaesthetising honey bees by CO2 in a jar and counting the mites dislodged from the insects. But according a recent study carried out in the US by the, the efficacy of this method is low, resulting in inaccurate estimates of the infestation level. The researchers concluded that the most accurate methods remain yet washing bees with soapy water or alcohol. Instead, for non-lethal methods, according an other study the best one is the powdered sugar shaking.<\/p>","protected":false},"author":3,"featured_media":4026,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,6],"tags":[],"class_list":["post-4025","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t