Trapped in the extinction vortex? Strong genetic effects in a declining vertebrate population

Table 1 Population data for southern dunlins and overview of samples used in the genetic analyses

Year	Total no. of pairs*	No. of finger- printed pairs^†	Total no. of hatchlings	No. of genotyped hatchlings^‡
1993	35	2	47	1
1994	38	2	54	2
1995	37	0	62	8
1996	24	2	26	2
1997	30	7	42	10
1998	25	2	36	3
1999	32	2	34	3
2000	28	0	34	8
2001	26	6	56	2
2002	26	7	65	13
2003	22	10	42	2
2004	16	0	48	10

*Minimum number based on confirmed breeding attempts (all local populations combined).
^† Each pair is only listed the first year it was recorded breeding (most pairs bred in more than one year). Total number of fingerprinted pairs n = 40.
^‡ Total number of microsatellite genotyped hatchlings n = 64, representing one randomly selected hatchling of each of 64 parental combinations. All individuals were typed at 9 loci (see Table 2).

ISSN: 2730-7182