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Please contact me if you have any questions

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Please contact me if you have any questions about my lecture. Leslie Vosshall leslie_at_mail.rockefeller.edu April 3, 2006 What is a Pheromone? Broader Definition ... – PowerPoint PPT presentation

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Title: Please contact me if you have any questions


1
Please contact me if you have any questions about
my lecture. Leslie Vosshall leslie_at_mail.rockefelle
r.edu April 3, 2006
2
Pheromones Animal Behavior
Leslie B. Vosshall
3
April 3 Lecture (PPT available this afternoon)
http//njc.rockefeller.edu/BN2006.php
April 10 Presentations (PDFs available April 4)
http//njc.rockefeller.edu/Vosshall.php
4
Suggested Reading
5
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6
  • Formula for the perfect social signal
  • Cheap to transmit
  • Cheap to receive
  • Discreet
  • Selective
  • Effective in the dark/barriers
  • Long-range
  • Long-lasting
  • Easy homing/identification

7
VISUAL
8
http//www.wildsong.demon.co.uk/LR/listening.html
AUDIO
http//www.bentler.us/eastern-washington/insects/s
nd/crickets.wav
9
CHEMICAL
Brennan Keverne, Curr. Biol. 14R81R89 (2004)
10
What is a Pheromone?
defined chemical signal between members of the
same species, eliciting a particular behavior or
physiological change...
11
Broader Definition Pheromones
any chemical signal conveying information
between members of the same species
Recognition of Individuals or Kin Differences
between signals essential
12
Pheromones
Health and Fitness Mate Choice/ Sexual
Selection Mate Selection to Avoid Incest/Genetic
Relatedness Sexual Maturation Successful
Fertilization (Aquatic Animals) Kin
Recognition Caste and Reproductive Status (Social
Animals) Menstrual Synchrony Maternal-Infant
Bonding Infant SucklingNipple Recognition Dominan
ce Hierarchy Aggression Territory and Trail
Marking Deception (Plant-gtAnimal) Deception
(Animal-gtAnimal) Aggregation Intruder Alarm
13
Semiochemicals Infochemicals
Pheromones Within species
Sender Receiver
Allelochemicals Between species
Synomones Sender Receiver
Kairomones Sender - Receiver
Allomones Sender Receiver -
14
Primer Pheromones
Wyatt Book
15
Evolution of Pheromones
Wyatt Book
16
Pheromones Odor Imprinting
Wyatt Book
17
Pheromones and behavior (phenomenology)
18
Silkmoth Bombyx mori
19
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Sex (Releaser) Pheromones
21
Mate Quality Courtship Pheromones
monocrotaline pyrrolizidine alkaloids
hydroxydanaidal
Wyatt Book
22
Pheromones-Dominance Hierarchy
23
Aggregation pheromoneDesert Locust
24
Aggregation Pheromones Barnacles
Wyatt Book
25
Ant caste determination
26
Primer pheromones-Termites
Wyatt Book
27
Dauer pheromones-C.elegans
High Density/Limiting Food
28
Alarm Pheromones
29
Marking Behavior-Mara rodent
Wyatt Book
30
Marking Behavior-desert ant
31
Trail Marking-leaf cutter ant
32
Marking, Territorial Behavior-Badger
Wyatt Book
33
Mimicry Pheromones Subverted for Deception
Australian orchid D. glyptodon traps male
Z.Trilobatus wasps
Bolas spiders vs. moths
34
Mate Quality MHC
35
Models for the MHC Effect 1. The MHC molecule
hypothesis (MHC fragments in urine and sweat) 2.
The peptide hypothesis (MHC peptide metabolites
in urine) 3. The microflora hypothesis (MHC
shapes allele-specific populations of commensal
microbes) 4. The carrier hypothesis (MHC carries
volatile aromatics, including those produced by
bacteria) 5. The peptide-microbe hypothesis (MHC
alters odor by restricting peptides available to
commensal bacteria)
36
Coolidge Effect (Remating with arrival of new
potential mate) Bruce Effect (Pregnancy block
when exposed to foreign male) Vandenbergh
Effect (Males accelerate puberty in young
females) Whitten Effect (Males induce oestrus in
adult females) Lee-Boot Effect (Group-housed
females show suppressed oestrus oestrus
synchronized by contact with males)
37
The Coolidge Effect
One day President and Mrs. Coolidge were
visiting a government farm. Soon after their
arrival they were taken off on separate tours.
When Mrs. Coolidge passed the chicken pens she
paused to ask the man in charge if the rooster
copulates more than once each day. "Dozens of
times" was the reply. "Please tell that to
the President," Mrs. Coolidge requested. When the
President passed the pens and was told about the
rooster, he asked "Same hen everytime?" "Oh no,
Mr. President, a different one each time." The
President nodded slowly, then said "Tell that to
Mrs. Coolidge."
38
Vandenbergh Effect (Males accelerate puberty in
young females)
Whitten Effect (Males induce oestrus in adult
females)
Lee-Boot Effect (Group-housed females show
suppressed oestrus oestrus synchronized by
contact with males)
39
Pheromone chemistry
40
Where do pheromones come from? Urine Sweat Tears
Other glands
41
Pheromone-Producing Glands-Insects
Wyatt Book
42
Pheromone-Producing Glands-Mammals
Wyatt Book
43
Manduca sexta female pheromone blend
44
Sex Pheromones
Wyatt Book
45
Schaal et al., Nature 424, 68-72 , 2003
46
Lin et al., Nature 434, 470 - 477, 2005
47
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48
C. elegans dauer pheromone
(- )-6R-(3'R, 5'R-dihydroxy-6'S-methyltetrahydro-p
yran-2'R-yloxy) heptanoic acid
Jeong et al., Nature 433541, 2005.
49
Pheromone reception (neural circuitry)
50
Olfaction vs. Pheromone Perception (vertebrates)
51
Vomeronasal or Jacobsons Organ (VNO)
52
VNO Pathways
53
Brennan Keverne, Curr. Biol. 14R81R89 (2004)
54
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56
Brennan Keverne, Curr. Biol. 14R81R89 (2004)
57
Brennan Keverne, Curr. Biol. 14R81R89 (2004)
58
Olfaction vs. Pheromone Perception (invertebrates)
59
Male Insect Antennae Specialized to Detect
Female Pheromones
60
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61
Pheromone receptors
62
Odorant Receptors (vertebrate)
63
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65
Pheromone Receptors (vertebrate)
66
V1R expressed with Gai and TRP2
67
V2R expressed with Gao and TRP2 (and MHC M10)
68
Pheromone Receptors (invertebrate)
69
come to me
go away
70
Nakagawa et al., Science 2005
71
Nakagawa et al., Science 2005
72
Pheromone reception (humans)
73
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74
Sequential Sensory Decisions in Sexual
Courtship Correct Species? Correct
Gender? Sexually Receptive? Other Quality
Control Criteria (usually monitored by
Females) Size? Strength? Other indicators of good
gene pool?
75
PHEROMONES IN HUMANS?
  • Kin recognition-family member vs. partner

76
PHEROMONES IN HUMANS?
  • Kin recognition-partner vs. stranger

77
PHEROMONES IN HUMANS?
  • Kin recognition-mother/child

78
PHEROMONES IN HUMANS?
  • Menstrual synchrony

79
Stern McClintock Nature 1998 392177
80
Realm Men by Realm Pheromone for Men
Realm Pheromones Women by Realm Pheromone for
Women
Realm, the fragrances with human pheromones.
Only Realm adds this extra dimension of human
Pleasure. Awaken your sixth sense. Experience
REALM. Contains human pheromones.
Active Ingredient androstenone (pig pheromone)
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