11_Female sex behavior I

Page 1

• Quiz Announcement:

  • Take Quiz 5 on Male Reproductive Behavior.

  • Administer during the first 15 minutes of class on iCollege.

Page 2

• Female Sex Behavior Concepts:

  • Mention of Dr. Kinsey and the Kinsey Report.

  • Pricing mention indicates it might be a reference material.

Page 3

• Today's Outline:

  • Focus on Mammalian sexual behavior and reproductive cycles.

Page 4

• Successful Sexual Behavior:

  • Leads to pregnancy through 4 key steps:

    1. Successful ovulation.

    2. Sexual intercourse and stimulation.

    3. Successful fertilization of the egg.

    4. Successful implantation in the uterus.

Page 5

• Definitions:

  • Distinguish between estrus (the state of being in heat) and anestrus (the state of being out of heat).

Page 6

• Behavior of Estrous Females:

  • Will actively seek males, initiate copulation, and prefer proximity to males.

  • Attractiveness to males increases during estrus.

  • Key Differences:

    • Estrous females are receptive and permit mating.

    • Anestrous females do not engage in these behaviors and are not attractive to males.

Page 7 and 8

• Estrous Cycle Stages in Canines:

  • Estrous cycle consists of 4 stages.

  • Estrus is the stage where dogs can become pregnant.

  • Detection of estrus is vital for effective swine breeding programs.

  • Male aggression increases in the presence of estrous females.

  • Rodents’ estrous cycle lasts about 4 to 5 days.

Page 9

• Precopulatory Behaviors:

  • Include various ways females gain access to males.

  • Courtship or proceptive behaviors are defined.

  • Proceptivity quantifies female's initiation of copulation, influenced by gonadal hormones.

Page 10

• Ovulatory Shifts in Human Female Behavior:

  • Women exhibit changes in clothing styles and behavior near ovulation for increased attractiveness.

  • Statistical analysis of differences in clothing choices between high and low fertility phases.

Page 11

• Female Sexual Interest:

  • Increased sexual interest and fantasies about non-primary partners near ovulation.

  • No significant increase in interest towards primary partners.

  • Notable increase in attentiveness from primary partners.

Page 12

• Copulatory Behaviors:

  • This occurs when the female displays receptivity, enabling fertile copulation.

  • In rodents, receptivity is quantified by specific behaviors such as lordosis.

Page 13

• Pacing Behavior:

  • Models natural behavioral patterns and is used to measure female sexual motivation.

  • Quantified through the frequency of approaches and withdrawals from males.

Page 14

• No Key Information Provided.

Page 15

• Paced Mating:

  • Enhances reproduction significantly.

  • Comparison between paced and non-paced mating outcomes shows higher pregnancy rates with paced mating.

Page 16

• Meerkat Social Structure:

  • Cooperative breeders with groups of 20-50.

  • Only one breeding couple; other members act as subordinates, which may be influenced by social environment.

Page 17

• Reproductive Suppression in Meerkats:

  • Study points to dominant females controlling breeding success through aggression and eviction of subordinates.

Page 18

• Social Environment's Impact on Mouse Reproduction:

  • Factors include chemical signaling from males and social hierarchy impacting reproductive function.

  • Notable effects include estrous cycle length alteration and puberty acceleration.

Page 19

• Mouse Social Reproductive Effects:

  • Lee-Boot effect: Extended estrous cycles without males.

  • Whitten effect: Cycle acceleration by male presence.

  • Bruce effect: Pregnancy interruption due to exposure to unfamiliar males.

  • Vandenbergh effect: Influences on juvenile female mice's puberty in relation to housing.

Page 20

• Key Drivers of Female Sexual Behavior:

  • Discussion on hormonal influences and behavioral outcomes.

Page 21

• Hormonal Influences:

  • Injections demonstrating the role of Estrogen in generating estrus and Progesterone in sustaining gestation.

Page 22

• Today's Outline Recap:

  • Focus on Mammalian sexual behavior and reproductive cycles reiterated.

Page 23

• Rodent Estrous Cycle Stages:

  • Stages including Estrus, Metestrus, Diestrus, and Proestrus discussed alongside hormones and LH roles.

Page 24

• Endocrine Control:

  • Social factors influencing receptivity are questioned, particularly in primates.

Page 25

• Birth Control and Mate Choice:

  • Study findings on hormonal contraceptive effects on women’s relationship satisfaction upon cessation.

Page 26

• Female Reproductive Anatomy:

  • Diagram overview of human reproductive system including oviducts, ovaries, uterus, etc.

Page 27

• Cyclic Reproduction in Female Vertebrates:

  • Describes the stages and events leading to ovulation and hormone production.

Page 28

• Comparison of Mammalian Uteri:

  • Overview of differences in reproductive anatomy among various species, including marsupials.

Page 29

• Events in the Ovaries:

  • Discusses phases including follicular and luteal phases and related hormonal changes over the menstrual cycle.

Page 30

• Graphical Representation of the Human Cycle:

  • Overview of hormonal cycling, with highlighting of LH surge leading to ovulation.

Page 31

• Estrous Cycle Lengths in Species:

  • Table providing details on the cycle lengths of various common species under optimal conditions.

Page 32

• Homework Assignment:

  • Assignment 7 on male sexual behavior due via iCollege.

Page 33

• Presentation Instructions:

  • Guidelines on discussion and multiple choice questions for approval two days prior to the presentation.

  • Structure and timing for the final presentation.

Page 34

• Presentation Tips:

  • Recommendations for effective delivery, including practicing, eye contact, and engagement techniques.