04-24-2014, 08:23 PM
HnH, Jacks are sexually mature male fish that spend 1 year in the salt. The same gene that makes a fish a jack makes females spend an extra year in the salt resulting in those toad females we see occasionally. The Jacks do breed with regular felames, as well as the larger oversize 3 salt females in the wild.
The F&G has in the past selectivley breed jacks with the 3 salt females, hoping to propogate that gene a little, which may explain why some years we see a bunch of jacks and yet the next year we do not get the big run that was projected, based on the previous years jack numbers. That is one of the biggist indicators of what the next years run will be, jack counts...
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The F&G has in the past selectivley breed jacks with the 3 salt females, hoping to propogate that gene a little, which may explain why some years we see a bunch of jacks and yet the next year we do not get the big run that was projected, based on the previous years jack numbers. That is one of the biggist indicators of what the next years run will be, jack counts...
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