Abstract
Abstract During the summers of 1980 and 1981, we analyzed techniques to produce, handle, and feed fingerling black crappies Pomoxis nigromaculatus. Production of black crappies was extremely variable, ranging from 0 to a maximum of 164,700 fingerlings/hectare. Brood-fish sex ratios near 1.0 and densities of 100–125/hectare resulted in the highest production of fingerlings per hectare and per female. Brush additions to ponds were unnecessary for successful black crappie spawning. Handling mortality of fingerlings in 1980 ranged from 80 to 100% within the first 3 h following harvest. Use of quinaldine (22 mg/L), a mixture of quinaldine (22 mg/L) and salt (0.5%), or sodium bicarbonate (100 mg/L) as handling treatments did not reduce handling mortality in 1981. However, harvesting at night (at approximately 2300 hours) reduced 3-d mortality of fingerlings to 8%. Fingerling black crappies (25–35 mm) were trained to accept a pelleted ration (Biodiet) with 85–95% success. A 7-d training sequence beginning with c...
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call