Lecture 12

Question 1

What is reproduction influenced by

Answer 1

Sense of smell

Question 2

Was connections does the vomeronasal organ have with the hypothalamus

Answer 2

Neural connections

Question 3

What is the vomeronasal organ

Answer 3

Blind sac which opens into nasopalatine canal

Question 4

What is the flehmen response

Answer 4

Head elevation and lip curl

Question 5

What is a primer pheromone

Answer 5

Chemical signals passing though the air or aqueous media between members of the same species to produce a relatively long-term physiological change

Question 6

What is the Bruce effect (3)

Answer 6

1. Exposure of a pregnant mouse to a foreign male that did not mate her can terminate her pregnancy
2. The wider the genetic difference, the greater the effect
3. due to blockage of release of prolactin

Question 7

What is the Whittem Effect

Answer 7

1Tendency for synchronisation of oestrous cycles

Question 8

What occurs when releaser pheromones are released

Answer 8

Emmited by one individual of a species to cause an immediate behavioural effect in another member of the same species

Question 9

What are the major pheromones (2)

Answer 9

1. 5a-androstenone

2. 3a-androstenol steroids

Question 10

What are the major pheromones produced by

Answer 10

Submaxillary salivary glands

Question 11

How to induce puberty in female pigs

Answer 11

1. House boar next to group of immature gilts

2. 3a-androstenol from the submaxillary salivary Gand