BLACK DRUM X RED DRUM HYBRIDIZATION AND GROWTH

• Published in: Journal of the World Mariculture Society
• Main Authors: Henderson‐Arzapalo, Anne, Colura, Robert L.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1984
• Subjects: General Medicine; Red drum; Sciaenops ocellatus
• Online Access: http://dx.doi.org/10.1111/j.1749-7345.1984.tb00175.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1749-7345.1984.tb00175.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1749-7345.1984.tb00175.x

ABSTRACT Hybridization, development, juvenile growth in ponds, and morphological characteristics of black drum ( Pogonias cromis ) female x red drum ( Sciaenops ocellatus ) male hybrids are described. Hormone (HCG) injection was used to induce ovulation in a field collected black drum. Spermatogenesis was induced in a laboratory maintained red drum by temperature and photoperiod manipulation. Hybridization was accomplished by strip‐spawning with a fertilization rate of 66%. Hatching began 30 hours post‐fertilization at 21–22°C, and mean total length of newly hatched fry was 1.6 mm. Mouthpart development was complete 58 hours post‐hatch, at which time larval fish were stocked into a 0.8 hectare fertilized pond. After 34 days, mean total length was 33.1 mm and survival was 16.6%. Approximately 13,000 hybrids were retained, fed commercial salmon feed, and harvested after 197 days. Mean total length at harvest was 189 mm. Mean daily growth rate was 0.81 mm/day while the food conversion efficiency was 1.9. Hybrid pigmentation patterns, number of anal rays, and the number of gill rakers were intermediate between the parent species.