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Bee hygiene > Bee questions 3 > Flashcards

Bee questions 3 Flashcards

1
Q

How does the bee show the place of food to other if it is within 10km radius?

A

Waggle dance

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2
Q

Signs of healthy brood?

A
  • Expanding circles
  • Larvae in unsealed cells = plump, mottled or pear coloured, capping slightly
    ahead and dark brown
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3
Q

Winter activity of apiary?

A

Covering combs, closing lines, controlling enemies

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4
Q

Composition of honey?

A
  1. Sugar
  2. vitamins
  3. minerals
  4. organic and F acids
  5. Enzymes.
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5
Q

What is swarming?

A

Queen leaves with 50% of the workers to another nest site

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6
Q

Who has venom?

A

Queen and workers

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7
Q

Number of combs in strong and weak colony?

A
  • Strong 7-8 combs
  • Weak < 5 combs
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8
Q

Summer activity in apiary?

A
  • Moving to rasp + sunflower, returning home, raising new queen + swarming
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9
Q

Pathogen of CVP?

A
  • RNA virus
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10
Q

APV vector, host, symptoms, mission

A
  • Vector: V. destructor
  • Host: Mainly workers
  • Symptoms: Non
  • Mission: Nurse bees infect larva via gland secrete, larvae die before cell
    sealing

APV = Acute Paralysis Virus

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11
Q

Spring activity in apiary?

A

Open hives, stimulating feed, develop colony, veterinary control, move to pollen position

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12
Q

Autumn activity in apiary?

A

Cleaning, sugar syrup feeding, Varroa control, winter preparation

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13
Q

Can aspergillus reproduce on adult bees?

A
  • Fungi can multiply on adult bees
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14
Q

How many bee species?

A
  • Worldwide there’s roughly 25.000 species of bees, but only 7 species of honey bees with a totalt of 44 subspecies
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15
Q

How many bees on both sides of a comb?

A
  • 1kg bee = 10.000 individuals
  • 1 comb with bees on both sides = about 1 kg
  • 10 x 10 cm honey comb = 300-350gram honey
  • 10 x 10 cm comb = 800-850 brood cells
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16
Q

Which lives in the malphigian tubes?

A
  • Malphigamoeba mellificae
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17
Q

What do bees use to sterilise the cells?

A
  • Propolis (from bud of trees)
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18
Q

Name an asian mite?

A
  • Tropilaelaps clareae, T. mercedesae - considered serous mites for Apis mellifera
  • Varroa destructor - Asian big bee mite
  • Acarapis woodi - Tracheal mite
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19
Q

Cyst is infective stage of nosema? (true/false)

A
  • False (the infective part is the spore)
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20
Q

Can Varroa jacobsoni infect apis mellifera brood/adult?

A
  • NO, only V. destructor can
21
Q

The louse is often mixed up with?

A
  • Often confused with Varroa mites
22
Q

What produces pheromones?

A
  • The queen; produce airborne pheromones called queen substance that keep the colony functioning orderly
23
Q

What glands do queen and drones not have?

A
  • Pharyngeal gland: Produce royal jelly and also the most important digestive gland (invertase)

Queen and workers have dufour gland

24
Q

When does nosema start to decline - winter, spring, summer or autumn?

A
  • Clinical manifestation mainly at the end of winter and spring, very rarely in summer and winter
25
Q

Chilled brood would be found where in the comb?

A
  • Usually occurs early spring when brood nests expand rapidly as there is a shortage of adult bees to cover all the brood and weather suddenly turn cold
  • Often found on the fringes of the brood area
  • In extreme cases, brood cells are punctured and uncapped for the adult bees to decapitate the pupae
26
Q

Whit nosema, would you see; Dysentry, failure to fly, both or neither?

A
  • Both
27
Q

Who can Deformed Wing Virus infect?

A
  • In workers and broods
  • Vector: V. destructor
  • Causing deformed or poorly developed shrunken wings
28
Q

Most destructive causative agent (in Europe)

A
  • Number 1: American foul brood
  • Number 2: Nosemosis
29
Q
  • Who has the longest larvae stage?
A
  • All have 5 larval stages
  • Queen has 6 days long
  • Worker has 5 days long
  • Drone has 7 days long
30
Q

Dance of bees: vertical, wiggling, both?

A
  • Round dance and waggle dance
31
Q

Causative agent for swollen abdomen?

A
  • Nosema apis (microsporidium)
32
Q

Causative agent for Isle of Wight disease?

A
  • CPV (chronic paralysis virus)
33
Q

Which larvae scales easily?

A
  • Paenibacillus larvae
34
Q

Which is NOT parasitic to Apis mellifera?

A
  • Japan + Thailand haplotype
35
Q

Scientific name of European foul brood?

A
  • Putrificatio polybacteritica larvarum
36
Q

Where can you find the corbicula?

A
  • On the hind legs (its the pollen busket)
37
Q

What is a worker

A
  • Non fertile female
38
Q

Where do you find the eggs of drones?

A
  • In the fringes of brood
38
Q

How old are the larvae most commonly infected with AFB?

A
  • 12-36 hours after hatching from egg
39
Q

How many day old larvae will die of Nosemosis?

A
  • None, they can’t be infected
40
Q

In which infection does dirt appear in the hive?

A
  • Nosemosis apium
41
Q

How many minutes does it take for the milk to curd in case of AFB?

A
  • 1 minute
42
Q

Which of the larvae of the large wax moth can be confused with another larvae?

A
  • Larvae of small hive beetle (Aethina tumida)
43
Q

If honey is treated for 20 minutes on 100 degrees C, can the spores of AFB survive?

A
  • Yes!
    Need minimum 1 hour on 112 degrees and honey can only be used for industrial purposes after this treatment
44
Q

How long does AFB spores survive?

A
  • 3-5 decades

30-50 years??

45
Q

How long is the incubation time of AFB?

A
  • 15 days

AFB = American foulbrood

46
Q

EU directive for honey quality?

A
  • Council directive 2001/110/EC of 20 December 2001 relating to honey
47
Q

Which one will make noise when comb is shaken?

A
  • Stone brood
48
Q

Where do you find the tracheal mites at dissection?

A
  • In the first pair of thoracic spiracle of the adult bees - first segment of the
    respiratory tract - thorax

Bee hygiene (19 decks)

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