week 5 Flashcards
(69 cards)
what are european honey bees used for
Is a Managed pollinator
Pollination services
-Main purpose (pollinating crops)
Production of honey and other hive products
what makes honeybees eusocial
Cooperative care of the brood
Overlapping generations
-Different generations alive at the same time
Division of labour
-Individuals in charge of reproduction only (queens/drones)
-Individuals only in charge of work (workers)
what is the population of a honey bee colony made up of
One queen
Thousands of workers
Hundreds of drones
A colony has 20 000 to 100 000 individuals
what are the different castes of honey bees
queen
worker
drone
what does a queen look like
Big abdomen for reproduction
what does a worker honey bee look like
Hairs for collecting pollen
what does a drone honey bee look like
Chubby
Huge eyes to identify queen
Big abdomen to hold reproductive organs (penis)
what type of reproduction does honey bee have
Haplodypoid
Fertilized eggs become female (queen, worker)
Diploid (2 sets of chromosomes)
Unfertilized eggs become male (drone)
Haploid (1 set of chromosomes)
what do honey bee cells look like
Peanut shaped cells for holding queens
Hexagon cells for everyone else
how many larval instars do honey bees have
5 larval instars
how long do honey bee eggs last before they hatch
3 days
how do honey bee larva move from one larval instar to the next
Mouts (ecdysis)
Last moult turns into pupa
how long does each type of honey bee take to develop
Drones take 24 days to develop
Workers take 21 days to develop
Queens take 16 days to develop
what are the characteristics of a honey bee egg
Oval shape
White
Vertical to horizontal position
1.2-1.8mm in size
0.12-0.22 mg weight
what are the parts of a honeybee egg
Micropyle
-Where sperm goes in to fertilize egge
Chorion
-Shell of egg
Cytoplasm with yolk
nucleus
what is embryogenesis
Development of an embryo from an egg
what is an embryo
Unhatched offspring in process of development
what is hatching
Emergence of larva (from egg) at end of embryonic development
what are the steps of development inside a honeybee egg
- Cleavage (from unicellular to multicellular)
- Formation of blastoderm
- Formation of a germ band
- Formation of germ layers
-Endoderm
-Mesoderm
-Ectoderm
Formation of organs and tissues
what are the characteristics of a honeybee larva
Comma shape
Pearly white color
Position: lateral to upright
Size: 2.7 to 26.5 mm
what is the weight of different honeybee larva
Worker: 140mg (x900)
Queen: 250mg (x1700)
Drone: 346mg (x2300)
what do honeybee larva eat and why is it important for development
Worker bees eat royal jelly during first 3 days
Queens only fed royal jelly
After 3 days workers fed worker jelly
larva have potential of becoming queen or worker based on their food
what are the characteristics of honeybee pupae
Shape: resembles adult
Color: pearly white to brown/yellow/black
Position: upright
Size: 40mm
what is the weight of different types of honeybee pupae at emergence
Worker: 120mg
Queen: 200mg
Drone: 220-290 mg