RAH I was not referring to your post but to the material from studies in the links as genetic theory. You did a good job with your comment IMO.

My understanding based on the genetic studies is that Fla and Northern LMB genetics are close enough that you don't get hybrid vigor followed by outbreeding depression. Not different species (although some say they are) but subspecies.Either way separate species or not the genetics are very close and not like crossing true different species. In the F-1s you don't see hybrid vigor (better than either parental). Instead you see (using Fla females and Northern males) fish larger than Northern's but smaller than Fla's and more aggressive than Fla's but less than Northern's. I also think but am not sure you see life spans in-between the 2 sub-species also - longer than Northern's but shorter than Fla's. The F-1's are intermediate to both parental in most traits. You see ,across much of the deep south outside of peninsular Fla. , natural integrades of all Fx % between the 2 subspecies. In that area there are not to my knowledge reports of outbreeding depression in LMB nor hybrid vigor.

There is a lot left to learn and either side could be right or wrong. Time will tell. In order to avoid the problem I stock some of all and may the best fish win.