Table 4.

Nest fidelity (proportion of time spent with nesting female) during paired competitive breeding trials of mature male parr that were growth hormone transgenic and nontransgenic. The first (A) and second (B) spawns from each trial were analysed for the period 52.5–12.5 min before the spawn (prespawn), 12.5 min on either side of the spawn (spawn), and 12.5–22.5 after the spawn (postspawn)

Spawn	Period	Genotype	N	Median	0.25 Quantile	0.75 Quantile	Range	Statistics
A	Prespawn	Transgenic	11	0	0	0.04	0–0.88	χ2 = 5.27
		Nontransgenic*	11	0.87	0.09	1	0–1	P = 0.022
	Spawn	Transgenic	11	0	0	0.04	0–1	χ2 = 4.70
		Nontransgenic*	11	0.98	0.64	1	0.01–1	P = 0.030
	Postspawn	Transgenic	11	0	0	0.38	0–1	χ2 = 1.58
		Nontransgenic	11	0.77	0.11	1	0–1	P = 0.209
B	Prespawn	Transgenic	10	0.02	0	0.72	0–1	χ2 = 4.51
		Nontransgenic*	10	0.98	0.52	1	0–1	P = 0.034
	Spawn	Transgenic	10	0.02	0	0.40	0–1	χ2 = 5.19
		Nontransgenic*	10	1	0.55	1	0.05–1	P = 0.023
	Postspawn	Transgenic	10	1	0	0.39	0–1	χ2 = 5.89
		Nontransgenic*	10	1	1	1	0–1	P = 0.015

^*The genotype with greater nest fidelity.