Skip to main content

Table 4 Hierarchical partitioning of the genetic variance.

From: Spatial and temporal variation in population genetic structure of wild Nile tilapia (Oreochromis niloticus) across Africa

Stat.

 

Variance components (%)

Φ Statistics

Estim.

Grouping

Within pops

Among groups

Among pops within groups

ΦST

ΦCT

ΦSC

 

Macro-geographic scale

      
 

All populations in one group

54.69

 

45.31

0.453 ***

  
 

All populations grouped by region 0

43.90

49.42

6.68

0.561 ***

0.494 ***

0.132 ***

 

All populations grouped by basin 1

46.74

49.78

3.48

0.533 ***

0.498 ***

0.069 ***

 

All populations grouped by taxonomy 2

43.72

47.14

9.14

0.563 ***

0.471 ***

0.173 ***

R ST

within Sudano-Sahelian region

90.61

 

9.39

0.090 ***

  
 

within Sudano-Sahel. grouped by basin3

75.03

24.79

0.18

0.250 ***

0.248 ns

0.002 ns

 

within Ethiopian region (Awash)

61.16

 

38.84

0.388 ***

  
 

within Nilotic region (Turkana & Nile)

73.05

 

26.95

0.269 ***

  
 

within Volta basin

100.45

 

-0.45

0.004 ns

  
 

Micro-geographic & temporal scale

      
 

within Volta basin

93.67

 

6.33

0.063 ***

  

F ST

within Volta grouped by site 4

91.56

6.48

1.96

0.084 ***

0.065 **

0.021 ***

 

within Kpandu (all temporal samples)

98.71

 

1.29

0.013 *

  
 

within Nyinuto (all temporal samples)

92.61

 

7.39

0.074 **

  
  1. Hierarchical analysis of molecular variance (AMOVA) calculated based on (1) R-Statistics for the macro-geographic scale and on (2) F-Statistics for the micro-geographic and temporal scales, considering the results of the test suggested by Hardy et al. [35]; the populations grouping reflects ichthyological provinces and regions, hybrographic basins, and taxonomy status (cf. Table 1).
  2. 0 3 groups: (Ethiopian: Hr, Kk, Me), (Nilotic: Mz, Tu), (Sudano-Sahelian: Se, Nb, Ko, Kp, Ny)
  3. 1 6 groups: (Awash: Hr, Kk, Me), (Nile: Mz), (Turkana: Tu), (Senegal: Se), (Niger: Nb), (Volta: Ko, Kp, Ny)
  4. 2 4 groups: (O.n.cancellatus: Hr, Kk), (O.n.filoa: Me), (O.n.vulcani: Tu), (O.n.niloticus: Mz, Se, Nb, Ko, Kp, Ny)
  5. 3 3 groups: (Senegal: Se), (Niger: Nb), (Volta: Ko, Kp, Ny)
  6. 4 3 groups: (Ko), (Kp: KpN1, KpM2, KpJ2, KpF3), (Ny: NyN1, NyM2, NyF3)
  7. Test significance: ns = non-significant, * P < 0.05, ** P < 0.01, *** P < 0.001.
Back to article page

BMC Genomic Data

ISSN: 2730-6844

Contact us