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Table 4 Empirical pedigree statistics

From: Molecular pedigree reconstruction and estimation of evolutionary parameters in a wild Atlantic salmon river system with incomplete sampling: a power analysis

  ‘77-‘81 (28 loci) ‘78-‘82 ‘79-’83 (28 loci) ‘80-‘84 ‘81-‘85 ‘82-‘86 Across all cohorts3
Samples available 1        
Candidate mothers 120 (120) 61 193 (193) 111 135 129 749
Candidate fathers 22 (22) 6 74 (74) 13 17 20 152
Offspring 145 (151) 150 201 (205) 118 213 49 876
Total 287 (293)2 217 468 (472)2 242 365 198 1482
Offspring with parent(s) identified        
Maternal links identified 38 (51) 63 60 (93) 32 90 14 297
Paternal links identified 3 (3) 0 12 (21) 4 23 2 44
Total (at least one parent) 41 (54) 63 67 (109) 34 93 14 312
Total (both parents) 0 (0) 0 5 (5) 2 20 2 29
Maternal half sib families 4        
Total family number 10 (11) 13 12 (18) 7 21 1 64
Mean family size 2.5 (2.8) 3.6 2.6 (2.9) 2.4 2.6 2.0 2.8
Maximum family size 4 (7) 6 6 (8) 3 5 2 75
Paternal half sib families 4        
Total family number 1 (1) 0 0 (4) 1 5 0 7
Mean family size 3 (3) 0 0 (2.5) 2 3.6 0 3.3
Maximum family size 3 (3) 0 0 (3) 2 6 0 6
Other        
Full-sib families4 0 (0) 0 0 (0) 0 4 0 4
Two generational links - - -   - - 20
  1. Statistics are given for six parent – offspring cohorts and the combined pedigree using 14 microsatellite loci and 95% confidence threshold for all cohorts and combined pedigree, and also with 28 microsatellite markers for the two parent – offspring cohorts (i.e. ‘77 – ‘81 and ‘79 – ‘83, listed in parentheses).
  2. 1Successfully genotyped individuals that were included in the parentage analysis (see also: Table 1).
  3. 2The total number of individuals with 28 loci is slightly more than that of with 14 loci, as fewer individuals were filtered out due to the minimum number of loci genotyped (N <7) threshold.
  4. 3Based on 14 loci.
  5. 4Includes only families with more than 1 offspring identified.
  6. 5Maximum family size when cohorts’ combined is more than that of individual cohorts’ number due to a multiyear spawner having the highest clutch number.