Shared Flashcard Set

Details

Unit 5:Colony Reproduction & Sex Determination
colony repro & sex det
30
Agriculture
Undergraduate 2
04/21/2016

Additional Agriculture Flashcards

 


 

Cards

Term
Male bees develop via...
Definition
parthenogenesis
Term
What are drone layers?
Definition
queens with empty spermatica (didn't mate, or sperm got used up)
Term
How many eggs can a queen lay per day?
Definition
1500-2000
Term
What is queen substance?
Definition
a pheromone which attracts drones to the queen
Term
What is thelytoky? What subsepecies do we see this in?
Definition
when worker bees lay other worker bees or queens

apis melifera capensis
Term
What is efficient supersedure? Inefficient?
Definition
when an old mated queen and virgin queen coexist

old queen killed before virgin queen emerges
Term
When does supersedure typically occur?
Definition
summer or early fall
Term
What is reproduction at the colony level?
Definition
swarming
Term
What causes swarming?
Definition
high population density

increasing hive temperature

reduced queen pheromone distribution throughout the hive

queen receives too little queen substance
Term
Do queens lose or gain weight prior to swarming?
Definition
lose weight (feed less)
Term
Do worker bees lose or gain weight prior to swarming?
Definition
gain weight (gorge with honey)
Term
Do swarms include drones?
Definition
yes
Term
Signs of swarming
Definition
-reduced foraging activity
-change in queen/worker bee weight
-bees form a beard at entrance
-queen cells in brood nest
Term
If swarming, europeean bees will seek out a site that is at least ______ in volume
Definition
15-80 liters
Term
What is a recruitment dance?
Definition
dance scouts perform to convey location about potential nest sites when colony wants to swarm
Term
Is sex determined by genes or chromosomes?
Definition
gene with up to 15 alleles
Term
Do female bees of pairs or individual chromosomes?
Definition
pairs
Term
Which is dominant in honeybees, the allele for black eyes or white?
Definition
black
Term
What is a hymenoptera?
Definition
refers to four-winged insects
Term
If a queen has the genotype a/b for sex genes,and mates with a drone of genotype a, what will the genotype of the offspring be?
Definition
Males: either a or b
Females: a/a or b/a
Term
Why do populations with only two sex alleles tend to be weak?
Definition
workers will eat homozygous diploid larvae
Term
What is the relationship between brood pattern and number of sex alleles?
Definition
more solid brood pattern associated with larger number of sex alleles
Term
Where is semen stored in the queen? What part of the body is this found in?
Definition
spermatheca

the abdomen
Term
True or False

The number of subfamilies of workers in a colony is equal to the number of drones the mother of that colony mated with
Definition
true
Term
Two workers from the same father will share ____ of their genes
Definition
75%

(25% from the queen, 50% from the drone)
Term
Have sisters have a relationship of ____. Why?
Definition
25%

share the same queen mother but different father
Term
What are super sisters?
Definition
workers with the same father (and mother)
Term
What is kin selection?
Definition
tendency for workers to preferentially feed supersister queen larvae more than half sister queen larvae
Term
What does it mean that 'different subfamilies tend to specialize in different tasks'?
Definition
workers from different subfamilies have different thresholds for different stimuli e.g. some may be more driven to remove dead bees, others to care for brood etc
Term
What model of reproduction to bees follow?
Definition
haplodiploid
Supporting users have an ad free experience!