Thread: black nosed crappie

I looked up a study on blacknose crappie. I'll try to summarize here to provide info for answering the numerous questions above.

The blacknose crappie is a black crappie that possess a gene that causes the black stripe from mouth to dorsal fin.

The gene that causes the stripe was found to be 'completely dominant' in this study.

Presence or absence of the blacknose trait is not tied to sex of the fish.

In this study, four progeny groups were produced. Groups 1 & 2 were produced by crossing a black crappie with no stripe with a 'blacknose crappie'. Group 1 parents consisted of females with no stripe and males with stripe and resulted in 100% of offspring with stripe. Group 2 parents consisted of females with stripe and males with no stripe and resulted in 100% of offspring with stripe.

Groups 3 & 4 were produced from fish from progeny group 1. Group 3 parents were female with stripe and male with stripe and resulted in 79.2% of offspring with stripe and 20.8% without stripe. Group 4 parents were female with stripe and male with stripe and resulted in 78.6% of offspring with stripe and 21.4% without stripe. Basically, 3:1 ratio for Groups 3 and 4.

Progeny group 3 exhibited a 1:1 ratio of males to females for both striped and no stripe fish.

Based on the findings of that study, If I had a pond, I'd keep any blacknose I caught alive and put them in the pond. You'd think that after a few years, if you're lucky you'd have a decent population of them, if you're lucky.

Originally Posted by mduncan62

Based on the findings of that study, If I had a pond, I'd keep any blacknose I caught alive and put them in the pond. You'd think that after a few years, if you're lucky you'd have a decent population of them, if you're lucky.

Being as Blacknose are simply Black Crappie (with a distinguishing marking gene) ... you wouldn't need "luck" to have a decent population, just simply a large enough pond ... with adequate conditions (temp/cover/foodsource/depth) for their survival ... same as you would have to have for any Black Crappie population. You would also need a source of predation, be it angling pressure or predatory fish, in order to help keep the population in check. It would only take a few breeding pairs a couple of spawns to overpopulate the waters & create a stunting of growth.

... cp