Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the anadromous run

Table 2 Summary of the population genetic statistics, both for anadromous trout ascending the river Guddal in 2006–2016 and for smolts sampled in 2017

	Sample	Sample size	Sex-ratio (Nf:Nm)	Number of alleles	A_r	H_O	H_E	HWE deviations	F_IS	N_e (CI_95%)
Ascending trout	2006	85	1.43	193	8.14	0.75 ± 0.07	0.75 ± 0.07	1	− 0.012 ± 0.024	99 (60–207)
	2007	34	1.83	169	7.98	0.76 ± 0.08	0.76 ± 0.07	0	0.000 ± 0.040	121 (51–∞)
	2008	79	1.55	196	8.15	0.72 ± 0.07	0.74 ± 0.07	0	0.019 ± 0.040	568 (202–∞)
	2009	81	2.12	209	8.28	0.73 ± 0.07	0.74 ± 0.07	0	0.005 ± 0.027	280 (137–2854)
	2010	25	1.78	159	7.64	0.75 ± 0.09	0.76 ± 0.08	0	− 0.007 ± 0.044	3646 (94–∞)
	2011	63	1.25	187	8.16	0.74 ± 0.07	0.75 ± 0.07	0	0.002 ± 0.030	196 (110–639)
	2012	53	1.21	199	8.46	0.71 ± 0.08	0.76 ± 0.08	2	0.049 ± 0.039	275 (96–∞)
	2013	39	1.05	169	7.84	0.72 ± 0.08	0.76 ± 0.07	0	0.032 ± 0.039	108 (55–598)
	2014	58	1.42	191	8.17	0.73 ± 0.08	0.74 ± 0.08	0	− 0.005 ± 0.040	83 (45–252)
	2015	96	1.18	192	8.02	0.74 ± 0.07	0.74 ± 0.07	0	− 0.010 ± 0.025	135 (78–332)
	2016	87	1.42	203	8.23	0.73 ± 0.07	0.75 ± 0.07	0	0.010 ± 0.024	149 (93–313)
Smolt	2017	851	2.15	287	7.32	0.74 ± 0.04	0.75 ± 0.04	17	0.020 ± 0.006	51 (46–56)

N: number of individuals sampled, Nf:Nm: number of females divided by number of males, Ar: allelic richness, H_O: mean observed heterozygosity, H_E: mean unbiased expected heterozygosity, F_IS: mean individual inbreeding coefficient. H_O, H_E and F_IS are followed by their 95% confidence interval. HWE deviations: number of deviations from Hardy–Weinberg equilibrium out of the 18 loci tested, after false discovery rate correction. N_e: effective population size estimated by the linkage disequilibrium method, lowest frequency used 0.05, CI95%: Jack knife confidence interval, ∞: infinite value

ISSN: 2730-7182