ENVS 2210 Lecture 11: envs 2210 unit 11

• School: University of Guelph
• Department: Environmental Sciences
• Course: ENVS 2210
• Professor: Ernesto Guzman

Document Summary

Main diseases include american foulbrood, european foolbrood, chalkbrood and sackbrood. Relatively easy to identify in the field with some practice, which allows for early control which minimizes their damaging effects. An infectious and highly contagious disease that causes old larvae and pupae to decay. Can kill colonies and spread to others if not treated. Etiology: afb is caused by paenibacillus larvae, which is a spore forming fram + bacterium with a rod length of 2. 5-5 icrons, spores are very resistant to moist antiseptic substances, heat, cold and. It can be diagnosed in lab as well: they look at spores under a microscope, biochemical, immulogical or molecular tests, when diagnosed in ontario it much be reported to omafra. Control: omafra recommends preventative treatments of all colonies with oxytetracycline mixed with powdered sugar in spring and fall. Afb, these produce bees that are resistant to afb.