| |
Young
|
Old
|
|---|
| |
Median
|
1. Quartile
|
3. Quartile
|
Median
|
1. Quartile
|
3. Quartile
|
|---|
|
Body size [cm]
|
4.90
|
4.70
|
5.10
|
5.20
|
4.95
|
5.40
|
|
Body mass [g]
|
1.562
|
1.372
|
1.712
|
1.812
|
1.617
|
2.031
|
|
Body condition
|
1.30
|
1.25
|
1.36
|
1.29
|
1.24
|
1.35
|
|
Red area [%]
|
14.84
|
6.22
|
27.21
|
13.74
|
6.29
|
21.94
|
|
Carotenoid chroma (A)
|
0.450
|
0.287
|
0.538
|
0.392
|
0.189
|
0.501
|
|
UV chroma (A)
|
0.271
|
0.244
|
0.291
|
0.245
|
0.209
|
0.273
|
|
Red/orange hue (A) [nm]
|
506.0
|
502.0
|
509.5
|
505.0
|
501.0
|
508.5
|
|
Total brightness (A)
|
2701.70
|
2072.17
|
3719.65
|
3267.38
|
2489.20
|
4939.09
|
|
Total brightness (R)
|
3075.86
|
2374.82
|
4326.12
|
1963.18
|
1402.66
|
3114.35
|
|
Absolute testis mass [g]
|
0.0107
|
0.0084
|
0.0140
|
0.0165
|
0.0135
|
0.0202
|
|
Relative testis mass (GSI)
|
0.697
|
0.585
|
0.862
|
0.951
|
0.731
|
1.103
|
|
Testis melanisation (L*total)
|
39.00
|
26.88
|
47.13
|
60.50
|
49.38
|
67.50
|
|
Sperm number
|
9.3*106
|
6.0*106
|
12.2*106
|
10.7*106
|
7.9*106
|
14.4*106
|
|
Head length [μm]
|
1.106
|
1.067
|
1.128
|
0.991
|
0.958
|
1.011
|
|
Tail length [μm]
|
18.033
|
16.946
|
19.280
|
17.017
|
16.036
|
17.600
|
|
Head width [μm]
|
1.076
|
1.048
|
1.104
|
0.999
|
0.979
|
1.018
|
|
Mid-piece width [μm]
|
0.782
|
0.761
|
0.813
|
0.766
|
0.731
|
0.792
|
|
Mid-piece volume [μm3]
|
0.284
|
0.268
|
0.311
|
0.256
|
0.239
|
0.281
|
|
Mid-piece length [μm]
|
0.587
|
0.548
|
0.614
|
0.583
|
0.515
|
0.621
|
|
Head to tail length ratio
|
0.094
|
0.089
|
0.099
|
0.091
|
0.087
|
0.098
|
- (A) colour measurements were made directly below the eye (breeding coloration).
- (R) measurements were taken at the dorsum below the first dorsal spine.
- (GSI) gonadosomatic index after de Vlaming et al. (1982).
- (L*total) testis brightness (see Mehlis et al. 2012 for details).
