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Free Content Estimation of Growth, Mortality and Yield Per Recruit for Lutjanus Synagris (Linnaeus) in Puerto Rico

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Growth and mortality parameters of lane snapper Lutjanus synagris were estimated from length-frequency data collected from the Puerto Rican commercial fisheries using the ELEFAN method. The von Bertalanffy growth parameters were estimated as K = 0.23 year−1 and L = 450 mm. The length-weight relationship was W (g) = 0.000061FL2.75. The growth parameters from Puerto Rico fall within reported growth values for lane snapper and lutjanids elsewhere. Total mortality rate was estimated using length-converted catch curve analysis Z = 1.65 year−1. Natural mortality was estimated by Ralston's empirical formula: M = 0.527 year−1. Fishing mortality, F, was 1.13 year−1. A Beverton-Holt yield-per-recruit model indicated that the current fishery harvests approximately 91% of the potential yield.

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Document Type: Research Article

Publication date: 1992-03-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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