Sensory systems & communication I Flashcards
1
Q
Mechanoreception
A
an insect’s sense of touch
2
Q
mechanoreception - where is it located
A
- Antenna
- Cerci
- All over body
3
Q
mechanoreception - Antenna
A
- All antennae are sensitive to touch, but in some groups, they project ahead as sort of ‘feelers’ (Roach and katydid)
- Antennae are also chemo-receptors
4
Q
mechanoreceptors - Cerci
A
- “Rear view” antennae
- Most insects don’t have cerci
5
Q
mechanoreception - all over body
A
- Trichoid sensillum (sensilla, plural)
- Hair in socket connected to neuron. Hair can move, motion activates nerve
- Can be extremely sensitive
6
Q
Proprioception
A
sense of body position
7
Q
proprioception - where is it located
A
- Hair-plate sensila (touch of adjacent plate)
- Campaniform sensillum (distortion of cuticle associated with motion)
- Stretch receptors (sense stretch of membrane)
8
Q
Vibrational communication
A
- Using vibrations through substrate or touch to communicate
- Senders produce vibrations
- Receiver detects them via mechanoreceptors
9
Q
vibrational communication - examples
A
- Sharpshooter mating calls
- Termite
- Honeybee dance communication
10
Q
vibrational communication - sharpshooter mating calls
A
- they use substrate vibrations on plants
- Male calls female
- Role of female dominance: female signals other females
- Works bc they are all on the plant together
11
Q
vibrational communication: Termites
A
- Banging the nest with their head sends signal throughout, alerts other termites
- Takes place in tunnels in wood or dirt
12
Q
vibrational communication - honeybee
A
the waggle dance conveys info about distance and direction to food source
13
Q
vibrational communication - waggle dance: vertical
A
direction of azimuth
14
Q
vibrational communication - waggle dance: azimuth
A
vertical line dropped down from the sun
15
Q
vibrational communication - waggle dance: length
A
distance to food source
