Table 1.

Estimates of yield per cohort, probability of population decline [Pr(R₀ < 1)], and F associated with four types of northern cod fishing gear, three ages at full recruitment to the gear, and ages at maturity, averaged across fishing mortalities of F = 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6

Gear	Age at full recruitment to gear (year)	Age at maturity (year)	Average yield for F0.1–0.6 (tonnes per 1012 eggs)	Average Pr(R0 < 1) for F0.1–0.6	Fevol
Trap	4	4	6186	0.141	0.21
		7	9694	0.326
	6	4	6243	0.005	0.19
		7	14 094	0.145
	8	4	5092	0.003	0.31
		7	15 897	0.021
Gillnet	4	4	5240	0.168	0.36
		7	7004	0.226
	6	4	6180	0.079	0.20
		7	10 155	0.295
	8	4	6069	0.006	0.21
		7	13 830	0.115
Handline	4	4	5320	0.205	0.32
		7	7266	0.270
	6	4	6189	0.169	0.19
		7	9868	0.381
	8	4	6377	0.010	0.18
		7	13 810	0.187
Trawl	4	4	7054	0.473	0.14
		7	11 600	0.612
	6	4	7712	0.062	0.14
		7	14 385	0.485
	8	4	7268	0.004	0.16
		7	17 442	0.105