Table 1 Summary of genetic surveys estimating population-based admixture rates in wild wolf samples, as well as confirming hybrids suspected from morphological, behavioral and/or preliminary genetic analyses.

From: Two decades of non-invasive genetic monitoring of the grey wolves recolonizing the Alps support very limited dog introgression

Location

Period

Admixed/Confirmed

Resources

Remarks

Ref.

Admixture estimation in wild populations

Italian Apennines (full range)

~1984–1999

1/107 (0.9%)

18 STRs

7

Italian Apennines (full range)

1987–2002

11/220 (5.0%)

16 linked-STRs

9

Italian Apennines (central-southern)

2000–2012

7/107 (6.5%)

18 STRs

53

Italian Apennines (northern)

2000–2009

16/430 (3.7%)

12 STRs + mtDNA CR + 4 Y-linked STRs

68

Italian Apennines (central, two areas)

2004–2013

14/47 (29.8%)

12 STRs + mtDNA CR + 2 Y-linked STRs

local hybridization events

21

Spain (north-western)

0/20 (0.0%)

13 STRs + mtDNA CR

69

Spain (north-western, one area)

2013

4/67 (6.0%)

18 STRs + mtDNA CR

three-months sampling

36

Spain + Portugal (full range)

1996–2009

8/212 (3.8%)

42 STRs + mtDNA CR + 6 Y-linked STRs

11

Portugal (central-western, one area)

2011–2014

1/21 (4.8%)

24 STRs + mtDNA CR

three packs studied

70

Georgia (full range)

2008–2012

14/102 (13.7%)

8 STRs + mtDNA CR

guarding dogs widespread

22

Bulgaria (full range) and Greece

2000–2011

10/102 (9.8%)

14 STRs + mtDNA CR

feral dogs widespread

71

Croatia (full range)

1996–2011

5/176 (2.8%)

12 STRs + mtDNA CR + 4 Y-linked STRs

hybrids restricted to anthropogenic areas

19

Confirmation of presumptive hybrids

Italian Apennines

1996–2011

24/30

39 STRs

 

17

Italian Apennines

1992–2015

68/68

170 K SNPs

 

18

Italian Tuscany

1993–2001

3/3

18 STRs

 

72

Spain

2011

9/13

13 or 52 STRs + mtDNA CR

 

54

Latvia

1997–1999

12/12

16 STRs + mtDNA CR

 

8

Estonia and Latvia

2008–2009

8/8

11 STRs

 

12

Norway

1998–1999

1/1

18 STRs + mtDNA CR + 1 Y-linked STR

 

10

Iran

7/7

15 STRs

 

73

  1. Admixture rates depend on the Q admixture threshold chosen, which varied between 0.8 and 0.95 across studies.