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  1. #1
    Join Date
    May 2016
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    Deer Lodge MT
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    Default How long does a mite live?

    I'm not asking for it's life cycle but more of how long does one live before it dies of old age? Do we know? I've tried looking it up but all I can find is information on its life cycle.

    The reason I ask is when we are looking at a sticky board how many mites may be dead as a result of old age and not necessarily a result of any treatment we may have done?
    4a

  2. #2
    Join Date
    Nov 2011
    Location
    Rader, Greene County, Tennessee, USA
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    9,732

    Default Re: How long does a mite live?

    A couple of references are in this thread:
    http://www.beesource.com/forums/show...-mite-lifespan

    Update:
    Well, the Clemson page linked in that thread is dead, but the UFL link is still viable.
    Graham
    USDA Zone 7A Elevation 1400 ft

  3. #3
    Join Date
    May 2016
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    Deer Lodge MT
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    711

    Default Re: How long does a mite live?

    Thanks...kind of answers my question. 27 days unless brood isn't present. Then several months.
    4a

  4. #4
    Join Date
    May 2016
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    Deer Lodge MT
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    711

    Default Re: How long does a mite live?

    I guess here's the reason I ask. I treated for mites last year with Apivar at the end of the season. I saw a lot of mites on the bottom board and landing when I did that. I also treated with a single OAV in late December. Yesterday I went into the hive and discovered a ton of bees. Much more than I had expected.

    Along with cleaning things up and reversing the brood boxes I replaced the old bottom board with a screened bottom board/solid bottom board so could monitor mites a bit better.

    Today I thought I should go out and spray some cooking oil on the plastic tray. When I pulled it out I noticed a bunch of mites on the tray that definitely were dead.

    I'm planing on a 4 week OAV treatment starting tomorrow but I'm a bit confused as to where these mites came from. Could they be from last years treatment that became dislodged when I moved things around?

    Could I have a mite infestation that bad already? I know the Apivar worked. I think my hive wouldn't have made the winter as well as they did if it hadn't.
    4a

  5. #5
    Join Date
    Feb 2013
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    Humboldt Co., California
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    410

    Default Re: How long does a mite live?

    I don't know what the weather has been like in your area, or if bees are even flying, but if they are, perhaps the mites came from robbing out other hives in the area that died from mite infestation???

  6. #6
    Join Date
    May 2016
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    Deer Lodge MT
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    711

    Default Re: How long does a mite live?

    Quote Originally Posted by orthoman View Post
    I don't know what the weather has been like in your area, or if bees are even flying, but if they are, perhaps the mites came from robbing out other hives in the area that died from mite infestation???
    Interesting thought. It has just started warming up. No real flying weather up until about a week to 10 days ago. They do have a lot of honey. Not sure of any hives close enough to rob.
    4a

  7. #7
    Join Date
    Oct 2011
    Location
    Grayson, KY
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    330

    Default Re: How long does a mite live?

    We never kill all the mites. We only reduce their numbers. So you still had mites.

  8. #8
    Join Date
    May 2016
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    Deer Lodge MT
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    711

    Default Re: How long does a mite live?

    Quote Originally Posted by BigGun View Post
    We never kill all the mites. We only reduce their numbers. So you still had mites.
    I was just surprised to see so many dead ones without any treatment on a tray that didn't have any 'sticky' on it in only a 24 hour period.
    4a

  9. #9
    Join Date
    May 2016
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    Deer Lodge MT
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    711

    Default Re: How long does a mite live?

    Still confused. I put the sticky board on yesterday....Sunday....today I checked it and found about 4 mites on it.

    It's as though my digging through the hive caused mites to drop which I don't understand. When I checked the board before I sprayed it with cooking oil a 24 hour period saw about 20 or 30.....
    4a

  10. #10
    Join Date
    Feb 2013
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    Humboldt Co., California
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    410

    Default Re: How long does a mite live?

    Who knows - perhaps is was your manipulations, perhaps you just had a lot of brood hatch out and the new mites were leaving the cells and were falling off

    I think it also points out that trying to use the sticky board to monitor mite counts isn't very representative -- that is why the alcohol wash and the powerded sugar shake method are the preferred method.

  11. #11
    Join Date
    Jul 2016
    Location
    Somerset, NJ
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    222

    Default Re: How long does a mite live?

    Also, any time frame less than 3 days is probably meaningless for sticky boards.

  12. #12
    Join Date
    Dec 2008
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    SOMERSET, ENGLAND
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    389

    Default Re: How long does a mite live?

    Quote Originally Posted by Aroc View Post
    Interesting thought. It has just started warming up. No real flying weather up until about a week to 10 days ago. They do have a lot of honey. Not sure of any hives close enough to rob.
    The dead mites could of ended up in empty cells after your last treatments and over winter, now the bees are expanding and becoming more active they are cleaning out these cells ready to use and, removing any dead mites as they do so.

  13. #13
    Join Date
    Oct 2015
    Location
    Finland
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    21

    Default Re: How long does a mite live?

    Quote Originally Posted by Aroc View Post
    Thanks...kind of answers my question. 27 days unless brood isn't present. Then several months.
    If this is true we would have zero mites after the winter here in Finland. We have at least 50 days of no brood and october-december, february very little brood. The total broodless petiod is in december and january.

  14. #14
    Join Date
    Jul 2016
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    Somerset, NJ
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    222

    Default Re: How long does a mite live?

    Quote Originally Posted by Hunajavelho View Post
    If this is true we would have zero mites after the winter here in Finland. We have at least 50 days of no brood and october-december, february very little brood. The total broodless petiod is in december and january.
    ?? Do you think 50 days is longer than several months?

  15. #15
    Join Date
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    Rader, Greene County, Tennessee, USA
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    Default Re: How long does a mite live?

    Here is the original quote that Aroc was referring to in his comment ...
    The phoretic period may last 4.5 to 11 days when brood is present in the hive or as long as five to six months during the winter when no brood is present in the hive. Consequently, female mites living when brood is present in the colony have an average life expectancy of 27 days, yet in the absence of brood, they may live for many months.

    http://entnemdept.ufl.edu/creatures/...arroa_mite.htm
    Graham
    USDA Zone 7A Elevation 1400 ft

  16. #16
    Join Date
    Oct 2015
    Location
    Finland
    Posts
    21

    Default Re: How long does a mite live?

    Quote Originally Posted by Hunajavelho View Post
    If this is true we would have zero mites after the winter here in Finland. We have at least 50 days of no brood and october-december, february very little brood. The total broodless petiod is in december and january.
    oops, my bad. did not notice the "then several months".

  17. #17
    Join Date
    Dec 2016
    Location
    Algérie
    Posts
    27

    Smile Re: How long does a mite live?

    Bonjour
    Je n'ai pas assez d'expérience en apiculture mais je pense que le traitement contre les acariens est efficace contre les acariens visibles mais inefficace contre les acariens qui sont logés dans les cellules des faux -bourdons.
    Je crois qu'il faut détruire les cellules des faux-bourdons(drones).
    Les cellules de (drones) sont des réservoirs d'acariens.Peut-être.

  18. #18
    Join Date
    Mar 2017
    Location
    Россия
    Posts
    2

    Big Grin Re: How long does a mite live?

    С наступлением безрасплодного периода клещи распределяются на уходящих в зимовку рабочих пчелах. На протяжении осени активность пищеварительных ферментов у них в основном не снижается. Только активность амилазы снижается в четыре раза и остается на таком уровне до конца весны. В зимние месяцы, особенно в наиболее холодные из них, у клещей активность пищеварения снижается в два-три раза, несмотря на то, что в середине зимы, в связи с появлением первого пчелиного расплода, клещи активизируются. В первой половине весны активность пищеварения у клещей практически еще не повышается, хотя немного возрастает активность инвертазы. Только в конце весны, накануне появления в семье трутневого расплода, активность всех исследованных пищеварительных ферментов достигает летнего уровня. Таким образом, на протяжении безрасплодного периода активность пищеварения у клещей не снижается. Напротив, активность пищеварительных ферментов падает уже после активации клещей во второй половине зимы и первой половине весны. Это снижение, вероятнее всего, связано с действием на клеща пониженных температур, так как в наиболее холодные зимние месяцы температура довольно значительно меняется не только на периферии, но и в центре пчелиного клуба. Низкая активность пищеварительных ферментов, отмеченная у клеща также в первой половине весны, скорее всего, связана с обеднением гемолимфы пчелы питательными веществами к концу зимовки:аплодисменты: With the onset of bezrazbornoe period, mites are distributed on leaving in the winter working bees. During the autumn activity of digestive enzymes have largely not reduced. Only the amylase activity is reduced four times and remains at this level until late spring. In the winter months, especially in the most cold of them, ticks the activity of digestion is reduced two to three times, despite the fact that in the middle of winter, in connection with the appearance of the first bee brood, mites aktiviziruyutsya. In the first half of spring, the activity of digestion in mites almost have not increased, although increases slightly the activity of invertase. Only in the late spring, before appearing in the family of drone brood, the activity of all studied digestive enzymes reaches the summer level. Thus, for bezrazbornoe period, the activity of digestion in ticks is not reduced. In contrast, the activity of digestive enzymes decreases after the activation of mites in the second half of winter and the first half of spring. This decrease is likely due to the effect on the tick low temperatures, as in the coldest winter months the temperature varies quite considerably, not only in the periphery but in the center of the bee club. Low activity of digestive enzymes, was observed in the tick also in the first half of the spring, most likely related to depletion of the hemolymph of bees with nutrients by the end of the wintering

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