behavioral endocrinology

Question 1

what does the implant corpus allatum gland do to the insect Rhodnius

Answer 1

producing chemicals to stay young

Question 2

what is vertebrate endocrinology

Answer 2

motivation controlled by endocrine system = combo of neural and glandular mechanisms

Question 3

what are hormones

Answer 3

chemical messages from neurons or glands that influence target organs

Question 4

what is phase 1 of ringneck dove reproductive feedback loop

Answer 4

photoperiod + nest material -> hypothalamus -> gonadotropins -> steroids -> courtship

Question 5

what is phase 2 of ringneck dove reproductive feedback loop

Answer 5

nest construction -> rising female progesterone -> egg laying

Question 6

what is phase 3 of ringneck dove reproductive feedback loop

Answer 6

incubation -> prolactin -> crop develops, gonadotropins down

Question 7

what is phase 4 of ringneck dove reproductive feedback loop

Answer 7

hatching -> chicks mature -> prolactin down -> gonadotropins up -> phase 1

Question 8

what is the main theme of behavioral endocrinology

Answer 8

each behavior sets off endocrine or other motivational changes that alters receptivity to subsequent stimuliw

Question 9

how is monogamy in voles controlled by vasopressin

Answer 9

males: arginine vasopressin (AVP): chemically blocking AVP preventing pair bonding. female presence matters

females: oxytocin added to female brain when she is with a male, accelerates partner bonding. chemically blocking oxytocin prevents bonding. male presence matters

Question 10

why should animals use external information to control hormone levels

Answer 10

animals need to time their behavior, such as reproduction, to correct environmental conditions

Question 11

what is an ethogram

Answer 11

a record of behavioral activities

Question 12

what are the effects of behaviors in castrated males

Answer 12

-castration decreased but did not eliminate some reproductive, territorial behaviors
-castrated males still occupied territories