Reproduction and growth of black drum, Pogonias cromis, in Northeast Florida
Murphy, M.D.; Taylor, R.G. (1989). Reproduction and growth of black drum, Pogonias cromis, in Northeast Florida. N.E. Gulf Sci. 10(2): 127-137
In: Northeast Gulf Science. Marine Environmental Science Consortium of Alabama: Dauphin Island. ISSN 0148-9836, more
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| Keywords |
Age
Age determination
Age determination > Otolith reading
Aquatic organisms > Marine organisms > Fish > Marine fish
Life history
Population functions > Growth
Properties > Biological properties > Sexual maturity
Reproduction
Reproduction > Sexual reproduction
Pogonias cromis (Linnaeus, 1766) [WoRMS]
Marine/Coastal |
| Authors | | Top |
- Murphy, M.D.
- Taylor, R.G.
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| Abstract |
Age, growth, and reproduction of black drum, Pogonias cromis, in northeast Florida were investigated between December 1983 and April 1985. Male black drum began maturing at 450-499 mm total length (TL), with 50% of them reaching maturity at about 590 mm (age 4 or 5). Vitellogenesis began at 450-550 mm TL, with 50% of the females reaching maturity at 650-699 mm (age 5 or 6). Spawning occurred during January-April. Thin sections of otoliths displayed distinct opaque bands; the first three or four of these bands were verified by marginal increment analysis as being annuli deposited during March-May. The growth rate was about 100 mm/yr for ages 1-3 and gradually slowed to 10-30 mm/yr for ages 15-20. |
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