Anhthu Midterm 2 Study Questions

Anhthu Midterm 2 Study Questions - Bales study questions...

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Bales study questions Male Reproductive Behavior 1. Define the four types of mating systems discussed in class. How do these differ in frequency between birds and mammals? Birds are very monogamous while mammals are mostly promiscuous. Promiscuity- multiple males with multiple females Polygyny- 1 male with multiple females Polyandry- 1 female with multiple males, but males only mate with her Monogamy- 1 male with 1 female 2. How do different types of mating system affect reproductive variation in males and females? Sexual selection gives rise to secondary sex characteristics. Balancing selection counters sexual selection because predatory see the superfluous shit. Anisogamy - different sized gametes and so sexes have different life strategies. Reproductive variation- how many kids can you produce: female humans have low reproductive variation. Male humans have very high. Robert Trivers said species with one sided high reproductive variation and have a nice characteristic will easily pass on traits for species that have higher fitness traits. 3. Define appetitive vs. consummatory behavior in the context of a) sexual behavior, b) addictive behavior, c) parental behavior. Appetitive- generally means seeking/source of motivation. Sexual behavior: sex drive/libido. Addictive behavior: seeking/source of motivation. Courtship behavior: parental behavior. Consummatory- generally means taking part in sexual behavior. Sexual behavior: performance, potency/mounting behavior + intromission + ejaculation. Addictive behavior: groom themselves and fall over? Parental behavior: will sing? Dang prof needs to write main points on slides… 4. With regards to sexual behavior, do males spend more time in the appetitive or consummatory phase? Males spend like 80% of the time in appetitive phase while consummatory period is very short. 5. Define: 1) mounting, 2) intromission, 3) ejaculation, 4) refractory period. Mounting- male grabs female haunches and is positioned behind her Intromission- p n vajay sandwiches Ejaculation- skeet skeet Refractory period- period where male isn’t interested in sex
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6. What happens hormonally to a male when he meets an estrus female? Male sees estrus female and GnRH is released from hypothalamus, LH (important thing that’s released with sight) and FSH from the anterior pituitary, Testosterone (abbrev. T from now on) from testes because of LH release and spermatogenesis from FSH, and T is then converted to estrogen and DHT. 7. How does castration affect sexual behavior in males of most species? How does time since castration affect the amount of testosterone needed to reinstate sexual behavior? How does previous sexual experience affect sexual behavior after castration? Castration removes T, which decreases sexual behavior.
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This note was uploaded on 05/14/2011 for the course CHE 118 taught by Professor Shaw during the Spring '10 term at UC Davis.

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Anhthu Midterm 2 Study Questions - Bales study questions...

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