Vibert Boxes/ Brown Trout Eggs Dec 6, 2016 7:30:55 GMT -6
Post by tsfarling on Dec 6, 2016 7:30:55 GMT -6
Although they are a different species, browns share nearly identical spawning habitats and habits as rainbows. The idea of them only spawning if they are born in a river is not correct. That is a myth. The Chattahoochee is a perfect example of that. The rainbows have done better than browns because every two weeks several thousand rainbows are dumped into the river whereas a couple times a year the LMF gets a shipment of browns. It's all about adult spawning numbers and total population. The population of browns in the LMF is a lot smaller than that of rainbows but again we do not know exactly how many adults are spawning of each species. When you say successfully spawning, are we talking about percentages or volume of off-spring? If we state it that way then maybe the 50 brown trout that are in the river are 50% successful at spawning because 25 spawn and the rainbows are 30% successful because 300 of 1,000 spawn (but in reality their numbers would have a greater impact on the population) So, I would say that spawning is better with rainbows due to the larger amount of spawning events occurring such as what we're seeing now and that reason is because the volume of rainbows in the population is much greater. Hopefully that makes sense.