TABLE 2.

Estimates of the effective number of breeding adults and the number of distinct inferred parental genotypes in the pedigree (N _s) for each stream and sea lamprey cohort

Location	Full‐sibs	Clusters	Cohort	n	$\overline{k}$	V k	LD	SF	N s	${\widehat{N}}_{\mathrm{s}}$‐ Chao	${\widehat{N}}_{\mathrm{s}}$‐ Jackknife
Lower Black Mallard River (A)	96	11	2015	1011	20.22	918.39	24 (22–25)	31 (20–52)	100	122 ± 13	120 ± 5
Lower Black Mallard River (A)	8	3	2016	29	4.14	26.55	3 (2–3)	6 (3–20)	14	45 ± 28	22 ± 4
Upper Black Mallard River (A)	9	4		34	5.23	24.02	3 (2–6)	7 (4–21)	13	15 ± 3	16 ± 2
Ocqueoc River (B)	87	17		389	10.24	799.50	50 (46–55)	9 (5–24)	76	91 ± 8	99 ± 6
Pigeon River (C)	6	3		19	3.17	4.81	8 (3–22)	10 (5–28)	12	16 ± 5	16 ± 3

Locations are shown with the letter abbreviations from the table in Figure 1. Full‐sibs and Clusters refer to the number of full‐sibling groups and Colony cluster groups in the reconstructed pedigree for each stream population, and the cohort is the inferred spawning year for locations with multiple cohorts. n is the number of larval sea lamprey for each cohort inferred by combining Gaussian mixture analysis and reconstructed pedigree data. V _k and $\overline{k}$ represent the variance in reproductive success and mean number of offspring for contributing parents in the represented stream population, respectively. LD refers to N _b estimates from the linkage disequilibrium method and SF refers to N _b estimates from the sibship frequency method. ${\widehat{N}}_{\mathrm{s}}$ – Chao and – Jackknife represent ${\widehat{N}}_{\mathrm{s}}$ estimates using the Chao and the jackknife methods, respectively