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In this work the authors investigated the patterns of intraspecific variation and …


Biology Articles » Evolutionary Biology » Evolution of male genitalia: environmental and genetic factors affect genital morphology in two Drosophila sibling species and their hybrids » Tables

Tables
- Evolution of male genitalia: environmental and genetic factors affect genital morphology in two Drosophila sibling species and their hybrids

Table 1
Shape variation.

Intraespecific analyses
Interespecific analysis

D. koepferae
D. buzzatii
Parental species + hybrids
Shape variables
Eigenvalue
Proportion(%)
Eigenvalue
Proportion(%)
Eigenvalue
Proportion(%)
PC1
1.94E-03
36.6
2.63E-03
30.3
6.26E-03
50.4
PC2
8.95E-04
16.8
1.57E-03
18.1
2.02E-03
16.3
PC3
4.85E-04
9.1
1.21E-03
13.9
1.05E-03
8.4
PC4
3.70E-04
7
8.16E-04
9.4
5.57E-04
4.5
PC5
2.50E-04
4.7
5.22E-04
6
4.97E-04
4
Percent of genital morphological variance explained by the first 5 principal components (PCs) in intraspecific and global (Dorosphila buzzattii + D. Koepferace + hybrids) analyses.

 

Table 2
Sources of variation of male genitalia in Drosophila buzzatii and D. koepferae.
Sources of variation
df
Size
Shape



PC1
PC2
PC3
PC4
PC5
a)







Species (Sp)
1
1812.95*
3519.85*
3.39
0.15
0.11
5.07*
Cactus
1
6.56*
0.04
0.95
1.47
0.39
2.62
Species × Cactus
1
0.77
0.53
0.02
0.99
1.42
1.18
Line(Sp)
28
2.05*
5.91*
2.36*
3.66*
3.08*
1.75
Line(Sp)*Cactus
28
1.99*
1.33
1.72*
0.99
1.88*
1.74*
Error
487














b)







Drosophila koepferae







Line
14
4.71*
6.99*
4.35*
3.97*
3.29*
2.63*
Cactus
1
4.02
0.62
0.24
0.5
0.49
0.23
Line × Cactus
14
1.12
0.89
1.1
2.00*
1.41
1.35
Error
264














Drosophila buzzatii







Line
14
1.39
3.25*
3.71*
4.08*
6.87*
3.65*
Cactus
1
3.31
0.07
1.67
2.71
1.88
0.04
Line × Cactus
14
2.47*
2.18*
1.1
1.06
1.25
1.33
Error
224






F values of the ANOVAs and MANOVAs for aedeagus size and shape respectively in interspecific (a) and intraspecific (b) analyses. * p
Table 3
Within organ allometry. Correlation coefficients between size and each one of the principal components (PC) scores accounting for shape variation in the aedeagus of D. koepferae, D. buzzatii and F1 hybrids.
Shape variables
Genital size

D. koepferae
D. buzzatii
F1 Hybrids
PC1
-0.08
-0.17*
0.61*
PC2
-0.07
0.45*
-0.21
PC3
-0.03
0.24*
0.1
PC4
0.02
0.16*
0.14
PC5
0.03
0.01
-0.02
Total allometric shape variance (%)
0.0
16.6
30.7
Allometric shape variance was calculated as the sum of partial allometric variance of each PC significantly correlated with size. * p
Table 4
Sources of variation of male genitalia interspecific crosses.
Sources of variation
Crosses

3512
4855
8832
4853
Size









df
F
df
F
df
F
df
F
Genotype
2
359.96**
2
204.17**
2
609.06**
2
176.73**
Cactus
1
0.33
1
0.41

-

-
Genotype × Cactus
2
0.14
2
4.49*

-

-
Error
38

69

56

34










Shape









df
λ
df
λ
df
λ
df
λ
Genotype
20
0.015**
20
0.095**
20
0.015**
20
0.014**
Cactus
10
0.865
10
0.914

-

-
Genotype × Cactus
20
0.635
20
0.672

-

-
F values of the ANOVAs and Wilk's lambda of MANOVAs for aedeagus size and shape respectively. *p p

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