Mosquito's copulaiting

Question 1

What type of modulaiton do mosuqitos display?

Answer 1

State-dependent auditory modulation!

Question 2

Frequency range for female mos

Answer 2

550hz

Question 3

What happens when males and females Mos meet to copulate

Answer 3

Flight tone change -Frequencies line up 1200hz

Question 4

Why are mosquitos better models than drosophilia?

Answer 4

JO of drophilia are much smaller

Question 5

Frequency range for male mos

Answer 5

800hz

Question 6

What system regulates mos flight tone

Answer 6

Circadian rhythym
Male increase flight tone around dusk time from 750 → 844 Hz

While female increase to 556hz.

Question 7

How does male mos increase flight tone?

Answer 7

• Fibrillae erection helps detect faint sounds at dusk
• Sexually dimorphic sound receiver

Question 8

How do mosquitos hear?

Answer 8

antenna- sound reciver which is equivelent to our ear drums.

sound receiver of the mos use air particles velocities which cuaes virbaition in frigella- moves and exites neruons in the johnson organ

Question 9

What are the 4 male-specific behaviours?

Answer 9

• Modulate sound receiver (conformation and oscillation)
• ↑ Wing beat frequency
• Harness distortion products
• Attracted to female sounds specifically at dusk (swarming)

Question 10

What is oscillation?

Answer 10

• Oscillation of sound receiver act as active
  mechanical amplification
• Reminiscent of mammalian cochlear amplifier

Question 11

What are distortion products?

Answer 11

In the case of male mos, they will take the tone of the female sound (tone 1 ) and other noise (tone 2) and create a distortion product. Distortion products are predictable and normally the male and female are not tuned to the distortion product (top graph) but when it’s mating time, frequency of distortion products is now tuned for the male mos by overlapping.

Question 12

What does the mos efferent system do?

Answer 12

modulates sound reciver

(GABA,
Octopamine, 5HT) modulate
peripheral auditory system

Question 13

describe Efferent control of auditory modulation

Answer 13

• Tunes sound receiver to female sound
• Change conformation sound receiver
• Induce self-sustain oscillation

Question 14

Do male JO tune to female sound

Answer 14

No

Question 15

What male part does tune to female sound

Answer 15

the sound recivier

Question 16

What is the JO of the mos? and what channels does it contain?

Answer 16

‘inner ear’
contained mechnically gated channels to transduce to an electrical signal

Question 17

What is an attractant for mos to be used as a control

Answer 17

carbon dixoide co2