Age and Growth of Red Hind and Rock Hind Collected from North Carolina Through the Dry Tortugas, Florida
Opaque bands on sectioned sagittal otoliths were used to age red hind, Epinephelus guttatus (N = 146), and rock hind, E. adscensionis (N = 144), sampled from the recreational headboat fishery between North Carolina and the Dry Tortugas, Florida, 1980–1992. Marginal increment analysis revealed that annuli form from March through May for red hind, and April and May for rock. hind. The maximum age estimated for red hind was 11 years, compared with 12 years for rock hind. Mean back-calculated total lengths (in mm) at ages 1, 5, and 10 were similar for both species: 228-, 358-, and 436-mm for red hind; and 214-, 362-, and 441-mm for rock hind. The von Bertalanffy growth equations for red hind and rock hind were Lt = 471.4(1 − e−0.200(t+2.397)), and Lt = 499.4(1 − e−0.167(t+2.495)), respectively, where t = age in years. The length-weight relationship for red hind was W = 1.8 × 10−7L2.614, where W = weight in kilograms, and was W = 6 × 10−9L3.193 for rock hind. Age-length keys are provided for each species. Red and rock hinds appear to grow faster and do not live as long as many serranids from the southeastern United States.
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Document Type: Research Article
Publication date: 1995-05-01
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