European Foulbrood:
* Larvae die in a coiled, twisted, or irregular
position in their cells. Cells are usually
uncapped.
* Larvae color may change from light cream to
grayish brown, darkening as the dead larvae
dry up.
* Sour odor may be present.
* Dead larvae are not ropy as in American
Foulbrood.
Recommended treatment:
Treat with Tylosin or Terramycin. Terramycin is
available in Terra-Patties® or Terra-Pro,
treat in spring and fall. Additional information
see pages 50-51.
American Foulbrood:
* Brood pattern is irregular rather than compact.
* Healthy larvae are glistening white color;
diseased ones lose this appearance, and turn
from light brown to dark brown and are
upright, not twisted in cells.
* Larvae long dead develop the consistency of
glue and are difficult for bees to remove
* Cappings become concave and some will be
punctured by bees attempting to remove the
dead brood.
* Surface of cappings will be moist or wet rather
than dry.
* Some dead pupae, shrunken into scales, have
their tongues protruding at right angle to their
scale or straight up. This may be the only
recognizable characteristic.
Recommended Treatment:
Treat with Tylosin or Terramycin. Terramycin is
available in Terra-Patties® or Terra-Pro
treat in spring and fall. Additional information
see pages50-51.
Tracheal Mite:
* Very hard to detect without dissection. If
you notice bees disappearing from your hive,
you may want your State Inspector to test
your bees for this mite.
Recommended Treatment:
Is best to treat this on a preventative measure
by using Mite-a-Thol®. Alternative treatment is Formic Acid Pads.
Additional information see page 46 & 49. |
Varroa Mites:
* Infested capped drone brood.
* Disfigured adult bees, deformed legs or
wings.
* Bees discarding larvae and pupae.
* Pale or dark reddish brown spots on other
wise
white pupae.
* Visible on the outside of bee.
* Spotty brood pattern.
Recommended Treatment:
Treat with either CheckMite+TM or Apistan® strips. Follow your states label
instructions.For additional treatments see pages 45-48.
Nosema Disease:
* Bees unable to fly or able to fly only short
distances.
* Bees seen trembling and quivering, colony
restless.
* Feces on combs, bottom boards, and
outside walls of hive.
* Bees seen crawling aimlessly on bottom
board, near entrance, or on ground; some
dragging along as if their legs are paralyzed.
* Wings positioned at various angles from
body – not folded in normal position over
abdomen.
* Abdomen distended (swollen).
* When bee is dissected, midgut is swollen,
dull, grayish white color and circular
constructions of gut are no longer evident;
normal gut color is brownish red or
yellowish with many circular constructions.
Recommended Treatment:
Treat with a mixture of Fumagilin®-B and sugar syrup in the spring and fall.
Additional information see page 49.
For more information about honeybee pests
and
diseases see our book
selection on pages 97-100
and check out our
website at www.mannlakeltd.com |
|
Wax Moths:
* Tunnels in combs.
* Silk trails, crisscrossing one another
over combs.
* Small dark objects (excrement of wax
moth larvae) in the silk trails in a hive.
* Silk cocoons attached to wooden parts.
* Destroyed comb, piles of debris on
bottom board.
* A strong hive usually controls moths
without assistance. Remove any
unnecessary supers or brood boxes
so they have less area to defend.
Recommended Treatment: Treat with
Para-Moth. Only use in stored supers.
Additional information see page 48 .
Chalkbrood:
* Mummified bodies of brood can often be seen in
cells, on bottom boards, or at the hive entrance.
* Very rare.
Recommended Treatment: There is no
registered control agent for use against chalkbrood
disease in Canada or the U.S. Although most reports
indicate that chalkbrood does not cause serious
economic losses, diseased colonies can have reduced
populations and reduced honey production. Since
adult bees can remove chalkbrood mummies, the
disease often disappears as colonies increase
in population and/or nectar flow commences.
Hive Beetle:
* White egg masses deposited by the
adult female
into crevices within the
hive.
* Larvae tunnel through the combs,
killing brood
and ruining newly drawn
comb.
* Cream-colored larvae feed on pollen
and honey
for 10-16 days before exiting
the hive to pupate
in the soil around the
hive.
* Pupae are light tan to blueish tan in
color.
* Winged adults emerge from the soil in
2-3 weeks, re-enter the hive to feed and
reproduce.
* Life span is up to 6 months.
Recommended Treatment:
Treat with one Checkmite+™ strip per hive ( in
approved states only). Also treat with ground
drench GardStar® to kill larvae that enter
the soil.For additional
information see pages 47 & 50.
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