lakers with crooked backs

[huntr-]

I have seen a lot of 18" to 24" lakers this year on camera with a severe crooked back thing going on. Does anyonknow what excactly it is?They seem fine as far as swimming or feeding. The ones I caught were stiff not flexible like most fish.

[surflizard]

I tracked it down to a parasite that attacks the cartilage in the spine, I'll try and find the study they did on it.

[huntr-]

Thanks ,I really am interested ,I've been seeing more every year.

[NH Trout Fisherman]

I have seen a couple posts here with the lakers and crooked backs? Ive never caught one like that, but I did catch a couple Browns this past fall with a similar problem... I was also told it was due to some sort of parasite?

[NHSlabbinCabin]

Whirling disease or something like that

[surflizard]

Nope whirling disease is a bacterial virus, the crook back is from a parasite infestation.

[ScreaminSpool]

I caught a laker during the derby like that, but it was really fat above the crook.  When I cut open the gut, a bunch of corn-like looking eggs flowed out of it!

[surflizard]

I found this on the national fisheries website.

 

HOME | FISH DISEASE DIAGNOSTICS | FISH DISEASES |
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Broken back disease

Broken back disease
Latin name:
Other names: scoliosis
Pathogen:
Symptoms: Scoliosis (bent spine)

Curved Spine, especially at the rear end.

Description:
It can be caused by consanguineous mating (inbreeding) of livebearers, mineral salt deficiency, and traumas at the larvae stage caused by water temperature fluctuations.
 
 

[Hardwata]

Some places have hybrid trout... New Hampshire has inbred trout...

[cantcatchsquat]

caught the same laker 3 times during derby on winni..same deal...looked like someone put a foot on the back and pulled up...kinda a "w" shape...odd

[icefsh4gold]

cantcatchsquat, the issue you're talking about is probably the whirling disease.

[cantcatchsquat]

idk...ill see if i can figure out how to post the video