Bees

Question 1

How many of our crops depend on bees

Answer 1

1/3

Question 2

How many species of bees, how many workhorses

Answer 2

400, 1 (honey bee. easy to move, was to work with )

Question 3

Pollination

Answer 3

Movement of pollen from anther to stigma (not the same thing as fertilization

Question 4

how many bees do we need

Answer 4

1-3 colanies (10000-30000 bees) per career needed for adequate pollination

Question 5

Wild bees

Answer 5

Often better pollinators but there are not as many of them

Question 6

Insufficient pollination/ fertilization

Answer 6

Apple has 5 chambers in which seeds develop

Effective pollination: Pollen must more between different apple varieties

No fertilization, no seeds, lopsided apples

Question 7

Why are there not enough bees

Answer 7

Bees are sick q

Question 8

Why are bees sick

Answer 8

Poor nutrition 
Pasasitic mites 
Viruses 
Gut paracites
Paracites 
Stress 
Weather 
Immunity

Question 9

Parasitic mites: Varroa desertctor

Answer 9

Most serious pest of honey bees world wide

Mated female mite enters the cell with mature large and reproduces on pupa, then bites bees and drinks the blood. Then viruses get transferred from bee to bee

Question 10

Deformed wing virus: effect on leaves

Answer 10

Varro mites transform DWV to larvae when adult mites feed on body fluids of leaves

Shrivelled wings were first believed to be caused by mite feeding

Now known ti be due to deformed wing virus

Mites without viruses have very little effect on bees

Question 11

Pesticides

Answer 11

Toxic in mixtures

Detoxification of pesticides reduce immune function

Neonics are heavily used, lost accumulates in environment and soil

Question 12

Nutrition of bees

Answer 12

Bees fed a mixture of pollens from different plant sources have more active immune systems than those fed only one type of pollen

Question 13

neonics

Answer 13

Systemic insecticides are translocated through the plant (kills insects)

Kills bees by accident