Parasitic mite syndrome
What is parasitic mite syndrome?
When varroa reaches high population levels in a colony the brood starts to show a range of disease symptoms known as parasitic mite syndrome (PMS). When the colony is near death most of the brood will exhibit these symptoms.
Where to look for symptoms
Symptoms are found in cells both before and after capping. The cell cappings can appear sunken, dark and perforated identical to prepupae with AFB. However, unlike AFB, only larvae and prepupae are affected. Prepupae are usually stretched out along the bottom wall of the cell (Fig. 52). Affected larvae and prepupae vary in colour between white and yellow.
Larvae may spiral up the walls of the cell (Fig. 53) like larvae with European foulbrood or half-moon syndrome.
The larvae may also curl around the entrance of the cell (Fig. 54) and at time,s form a dry scale around the entrance of the cell (Fig. 55).
Unlike AFB, PMS larval remains can be completely removed with a match stick (Fig. 56) and will not rope out. When PMS symptoms appear the colony is close to death. However, if a varroa treatment is administered, the colony may survive and the PMS symptoms will disappear.
Unlike AFB, PMS-affected larvae do not rope out and can be completely removed from their cell with a match stick.
Take the AFB 5 minute quiz
How well do you know what you need to know about AFB and beekeeping? Take our short quiz and find out.
Our videos cover everything from your legal obligations to how to recognise AFB, collecting cell and bee samples and more.
There’s a lot of good information here, telling you everything you need to know about recognising AFB: the visual symptoms, smell of AFB and more.
Inspection and Diagnosis
Successfully eliminate AFB by telling the difference between symptoms of AFB and other brood diseases in the hive. We tell you the best methods for inspecting your hives.
New Zealand beekeepers have a number of legal obligations that must be met regarding AFB disease. Read the shortened list in summary, here.
Most hives become infected because bees, honey or equipment have been put into a hive from another hive that is infected with AFB. Lower your chances of an AFB infection by reading this section.
AFB Recognition Course Info
Find out when the next AFB Recognition and Competency Courses, or Refresher Courses are available. These are held throughout the year in various New Zealand locations across the South Island and North Island.
The AFB App
Follow the link below to open the App. Once open to save to your device you need to bookmark the URL on your phone so you can find it easily again. Please click here to open.