This observation will be useful for the sustainable management and conservation of this species in the study area. However, responses to fishing pressure can be expected, whether the structure of the stock changes with its intensity. synagris in the Maranhão continental shelf shows that this stock is possibly not yet overexploited. The understanding of the biological aspects of L. The temporal variation of the reproductive period is associated with two periods of seasonality in the Maranhão continental shelf, intensifying their reproductive strategies. The estimated average length of first sexual maturity (L50) for grouped sexes was 27.8 cm total length, and the length at which all the individuals were mature (L100) was 42.0 cm. Many post-ovulatory follicles indicated that the ovaries developed a reproductive peak before the spawning season. The monthly frequency of maturation stages for females and males showed a high prevalence of individuals in the development stage. The sex ratio for TL classes significantly deviated for females when the TL was between 36 and 39.9 cm (χ² = 12.46 df = 1 p < 0.05). To clarify the reproductive activity of lane snapper, Lutjanus synagris, a total of 359 specimens of lane snapper were collected in partnership with an artisanal fleet monitored in a fishing area in the Maranhão continental shelf between May 2018 and June 2019 and verified frequency of size and sex ratio, length/weight ratio (LWR), spawning season, fecundity, and size at maturity. The weight-length relations were W = 1.31 × 10-5元.03(n = 78, r2 = 0.99) and W = 5.40 × 10-6元.15(n = 79, r2 = 0.79) for dog snapper and mahogany snapper, respectively, where W = whole weight in grams. = 334(1-e(0.31(t+1.19))) for dog snapper and mahogany snapper, respectively. The Von Bertalanffy growth equations were L Dog snapper ranged from 200-837 mm total length (TL) and ages 2-33, while mahogany snapper ranged from 270-416 mm TL and ages 2-18. Analysis of otolith edge-type revealed that annuli formed between May and July on both species. Otoliths of both species were easily interpretable and agreement between readers was acceptable. Fish were aged (56 dog snapper and 54 mahogany snapper) by counting opaque zones on sectioned sagittal otoliths. The species were opportunistically sampled from commercial and recreational fisheries in the southeastern U.S. primarily occurring off of southern Florida.
Dog snapper (Lutjanus jocu Bloch and Schneider 1801) and mahogany snapper (Lutjanus mahogoni Cuvier 1828) are infrequently caught snappers in the southeastern U.S.
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