Table 1.

Number of sire, dam and progeny in pond and cage environments.

Environment	Spawning year	Line	Sire	Dam	Progeny
Pond	2009	Base population	79	79	7,283
	2010	Selection	46	55	2,375
	2011	Selection	43	50	2,080
	2012	Selection	52	69	3,265
	Sub-total		220	253	15,003
Cage	2009	Base population	–	–	–
	2010	Selection	35	38	1,366
	2011	Selection	39	44	1,344
	2012	Selection	45	60	2,203
	Sub-total	Selection	119	142	4,913
Total			224	262	19,916

Total number of common sires and dams in both environments.