BLACK DRUM X RED DRUM HYBRIDIZATION AND GROWTH
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. Spermatogenes...
| Published in: | Journal of the World Mariculture Society |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1984
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| Subjects: | |
| 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 |
| Summary: | 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. |
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