Fitness costs in spatially structured environments
1. Fitness costs in
spatially structured environments
F. Débarre
@flodebarre
Symposium :
Evolutionary ecology of cooperation:
theory and experiment
Slides available at
http://bit.ly/eseb15
F. Débarre Costs in Space ESEB – -- /
2. Evolution in a spatially structured environment
F. Débarre Costs in Space ESEB – -- /
3. Evolution in a spatially structured environment
Non spatial
F. Débarre Costs in Space ESEB – -- /
4. Evolution in a spatially structured environment
Non spatial
F. Débarre Costs in Space ESEB – -- /
5. Evolution in a spatially structured environment
Non spatial Spatial
F. Débarre Costs in Space ESEB – -- /
6. Evolution in a spatially structured environment
Non spatial Spatial
Eects of spatial structure on the evolution of...
Hamilton May
Ferrière Le Galliard
Pen
Lion
Lehmann Keller
Lehmann Rousset
Boots Sasaki
Lion Boots
Best et al.
Débarre et al.
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7. Living next to your kin is a double-edged sword
F. Débarre Costs in Space ESEB – -- /
8. Living next to your kin is a double-edged sword
Kin selection
F. Débarre Costs in Space ESEB – -- /
9. Living next to your kin is a double-edged sword
Kin selection Kin competition
F. Débarre Costs in Space ESEB – -- /
10. Living next to your kin is a double-edged sword
Kin selection Kin competition
Taylor
Wilson et al.
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11. Living next to your kin is a double-edged sword
Kin selection Kin competition
Taylor
Wilson et al.
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12. Traits and costs
There ain’t no such thing as a free lunch
F. Débarre Costs in Space ESEB – -- /
13. Traits and costs
There ain’t no such thing as a free lunch
Susceptibility to disease Fecundity
F. Débarre Costs in Space ESEB – -- /
14. Traits and costs
There ain’t no such thing as a free lunch
Susceptibility to disease Fecundity
(c)Fastily
Integumental defenses
in Silkworms Mechanical
defense against pathogens.
Ashida Brey
(c)CDC
Humans vs.
Mycobacterium
tuberculosis Genetic
variability in susceptibility.
Cooke Hill
F. Débarre Costs in Space ESEB – -- /
15. Traits and costs
There ain’t no such thing as a free lunch
Susceptibility to disease Fecundity
(c)Fastily
Integumental defenses
in Silkworms Mechanical
defense against pathogens.
Ashida Brey
(c)CDC
Humans vs.
Mycobacterium
tuberculosis Genetic
variability in susceptibility.
Cooke Hill
(c)Jpeccoud
Aphids vs. endoparasitic
wasps Positive relationship
between fecundity and
susceptibility to attack.
Gwynn et al.
(c)FrankVassen
Collared flycatchers
Immune response correlates
negatively with reproductive
success.
Gustafsson et al.
F. Débarre Costs in Space ESEB – -- /
16. Traits and costs
There ain’t no such thing as a free lunch
Susceptibility to disease Fecundity
(c)Fastily
Integumental defenses
in Silkworms Mechanical
defense against pathogens.
Ashida Brey
(c)CDC
Humans vs.
Mycobacterium
tuberculosis Genetic
variability in susceptibility.
Cooke Hill
(c)Jpeccoud
Aphids vs. endoparasitic
wasps Positive relationship
between fecundity and
susceptibility to attack.
Gwynn et al.
(c)FrankVassen
Collared flycatchers
Immune response correlates
negatively with reproductive
success.
Gustafsson et al.
F. Débarre Costs in Space ESEB – -- /
18. Outline
Investigate the eects of spatial structure
on the evolution of
Demographic parameters
F. Débarre Costs in Space ESEB – -- /
19. Outline
Investigate the eects of spatial structure
on the evolution of
Demographic parameters
Host resistance against parasites
F. Débarre Costs in Space ESEB – -- /
20. Outline
Investigate the eects of spatial structure
on the evolution of
Demographic parameters
Host resistance against parasites
F. Débarre Costs in Space ESEB – -- /
30. Demographic parameters (fecundity, mortality)
dp
dt
= b
⇣
( gR) q | + gR p
⌘
p d p .
Add mutant , with parameters (b + @b, d + @d)
F. Débarre Costs in Space ESEB – -- /
31. Demographic parameters (fecundity, mortality)
dp
dt
= (b + @b)
⇣
( gR) q | + gR p
⌘
p (d + @d) p .
F. Débarre Costs in Space ESEB – -- /
32. Demographic parameters (fecundity, mortality)
dp
dt
= (b + @b)
⇣
( gR) q | + gR p
⌘
p (d + @d) p .
Can the mutant invade the population?
F. Débarre Costs in Space ESEB – -- /
33. Can the mutant invade the population?
@b and @d
Selection gradient
F. Débarre Costs in Space ESEB – -- /
34. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
F. Débarre Costs in Space ESEB – -- /
35. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Self
F. Débarre Costs in Space ESEB – -- /
36. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
F. Débarre Costs in Space ESEB – -- /
37. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
F. Débarre Costs in Space ESEB – -- /
38. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
F. Débarre Costs in Space ESEB – -- /
39. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
F. Débarre Costs in Space ESEB – -- /
40. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
F. Débarre Costs in Space ESEB – -- /
41. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
Non spatial
gR =
F. Débarre Costs in Space ESEB – -- /
42. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
4.0 4.5 5.0 5.5
0.000
0.001
0.002
0.003
Selectiongradient
Fecundity
Non spatial
gR =
F. Débarre Costs in Space ESEB – -- /
43. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
4.0 4.5 5.0 5.5
0.000
0.001
0.002
0.003
Selectiongradient
Fecundity
Non spatial
gR =
Spatial
gR =
F. Débarre Costs in Space ESEB – -- /
44. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
4.0 4.5 5.0 5.5
0.000
0.001
0.002
0.003
Selectiongradient
Fecundity
Non spatial
gR =
Spatial
gR =
F. Débarre Costs in Space ESEB – -- /
45. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
4.0 4.5 5.0 5.5
0.000
0.001
0.002
0.003
Selectiongradient
Fecundity
Non spatial
gR =
Spatial
gR =
F. Débarre Costs in Space ESEB – -- /
46. Can the mutant invade the population?
@b and @d
Selection gradient
@R = @b
d
b
@d + ( gR) b @q | .
Demographic
structure
Self
4.0 4.5 5.0 5.5
0.000
0.001
0.002
0.003
Selectiongradient
Fecundity
Non spatial
gR =
Spatial
gR =
F. Débarre Costs in Space ESEB – -- /
47. Outline
Investigate the eects of spatial structure
on the evolution of
Demographic parameters
F. Débarre Costs in Space ESEB – -- /
48. Outline
Investigate the eects of spatial structure
on the evolution of
Demographic parameters
Host resistance against parasites
F. Débarre Costs in Space ESEB – -- /
57. Epidemiological model
dp
dt
=b
⇣
( gR) q | + gR p
⌘
p d p
↵
⇣
( gT) q | + gT p
⌘
p ,
dp
dt
= ↵
⇣
( gT) q | + gT p
⌘
p .
F. Débarre Costs in Space ESEB – -- /
58. Epidemiological model
dp
dt
=b
⇣
( gR) q | + gR p
⌘
p d p
↵
⇣
( gT) q | + gT p
⌘
p ,
dp
dt
= ↵
⇣
( gT) q | + gT p
⌘
p (d + ⌫) p .
F. Débarre Costs in Space ESEB – -- /
59. Epidemiological model
dp
dt
=b
⇣
( gR) q | + gR p
⌘
p d p
↵
⇣
( gT) q | + gT p
⌘
p ,
dp
dt
= ↵
⇣
( gT) q | + gT p
⌘
p (d + ⌫) p .
Add mutant , with parameters (↵ + @↵, b + @b)
F. Débarre Costs in Space ESEB – -- /
60. Epidemiological model
dp
dt
=(b + @b)
⇣
( gR) q | + gR p
⌘
p d p
↵
⇣
( gT) (q | + q | ) + gT p
⌘
p ,
dp
dt
=(↵ + @↵)
⇣
( gT) (q | + q | ) + gT p
⌘
p (d + @d + ⌫) p .
F. Débarre Costs in Space ESEB – -- /
61. Epidemiological model
dp
dt
=(b + @b)
⇣
( gR) q | + gR p
⌘
p d p
↵
⇣
( gT) (q | + q | ) + gT p
⌘
p ,
dp
dt
=(↵ + @↵)
⇣
( gT) (q | + q | ) + gT p
⌘
p (d + @d + ⌫) p .
Can the mutant invade the population?
F. Débarre Costs in Space ESEB – -- /
62. Can the mutant invade the population?
Selection gradient
F. Débarre Costs in Space ESEB – -- /
63. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
+ ( gR) b @q | ( gT) @(qI’|S’ + qI|S’) ↵ .
F. Débarre Costs in Space ESEB – -- /
64. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q | ( gT) @(qI’|S’ + qI|S’) ↵ .
F. Débarre Costs in Space ESEB – -- /
65. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
F. Débarre Costs in Space ESEB – -- /
66. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
F. Débarre Costs in Space ESEB – -- /
67. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
F. Débarre Costs in Space ESEB – -- /
68. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
Epidemiological
structure
F. Débarre Costs in Space ESEB – -- /
69. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
Epidemiological
structure
F. Débarre Costs in Space ESEB – -- /
70. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
Epidemiological
structure
F. Débarre Costs in Space ESEB – -- /
71. Can the mutant invade the population?
Selection gradient
@R = @b
⇣
( gR) q⇤
|
+ gR p⇤
⌘
@↵
⇣
( gT) q⇤
|
+ gT p⇤
⌘
Self
+ ( gR) b @q |
Demographic
structure
( gT) @(qI’|S’ + qI|S’) ↵ .
Epidemiological
structure
Ecology matters as well!
F. Débarre Costs in Space ESEB – -- /
73. Trait and cost
=
Susceptibility to the disease ↵
Fecundity b
F. Débarre Costs in Space ESEB – -- /
74. Trait and cost
=
Susceptibility to the disease ↵
Fecundity b
1.0 1.2 1.4 1.6 1.8 2.0
4
5
6
7
8
submat00$pr
birth(submat00$pr)
Susceptibility (α)
Fecundity(b) Trade-o
F. Débarre Costs in Space ESEB – -- /
75. Trait and cost
=
Susceptibility to the disease ↵
Fecundity b
@R .cm
= @R .cm
+ @R .cm
F. Débarre Costs in Space ESEB – -- /
76. Trait and cost
=
Susceptibility to the disease ↵
Fecundity b
@R .cm
= @R .cm
+ @R .cm
Compare selection gradients @R
Non spatial gR = gT = : all interactions are global
Spatial gR = gT = : all interactions are local
F. Débarre Costs in Space ESEB – -- /
97. Take Home Messages
I When reproduction is density-dependent,
fitness costs are less costly in a spatial setting
than in a non-spatial setting;
F. Débarre Costs in Space ESEB – -- /
98. Take Home Messages
I When reproduction is density-dependent,
fitness costs are less costly in a spatial setting
than in a non-spatial setting;
I Need to consider costs not just as costs, but as
correlated traits , and study their evolution as well.
@R = @R + @R
F. Débarre Costs in Space ESEB – -- /
99. Take Home Messages
I When reproduction is density-dependent,
fitness costs are less costly in a spatial setting
than in a non-spatial setting;
I Need to consider costs not just as costs, but as
correlated traits , and study their evolution as well.
@R = @R + @R
I For more details, see
F. Débarre Costs in Space ESEB – -- /
100. Take Home Messages
I When reproduction is density-dependent,
fitness costs are less costly in a spatial setting
than in a non-spatial setting;
I Need to consider costs not just as costs, but as
correlated traits , and study their evolution as well.
@R = @R + @R
I For more details, see
Acknowledgements
F. Débarre Costs in Space ESEB – -- /
101. Take Home Messages
I When reproduction is density-dependent,
fitness costs are less costly in a spatial setting
than in a non-spatial setting;
I Need to consider costs not just as costs, but as
correlated traits , and study their evolution as well.
@R = @R + @R
I For more details, see
Acknowledgements
and you for
your attention!
F. Débarre Costs in Space ESEB – -- /