2019-04-122019-04-122009-12-21GARCIA, Thiely Oliveira. Hábito alimentar e nível trófico de espécies de peixes marinhos e estuarinos da costa brasileira. Orientador: Tommaso Giarrizzo. 2009. 67 f. Trabalho de Curso (Bacharelado em Oceanografia) – Faculdade de Oceanografia, Instituto de Geociências, Universidade Federal do Pará, Belém, 2009. Disponível em: http://bdm.ufpa.br/jspui/handle/prefix/1288. Acesso em:.http://bdm.ufpa.br/jspui/handle/prefix/1288With the aim to better define the ecological role of marine fish fauna and to contribute to mass balance trophic model construction, this study presents standardized diet compositions and trophic levels (TL) calculated for 80 fish species of 39 families and 21 orders. All available quantitative information (peer-viewed and gray literature articles) on stomach content of Brazilian marine fishes was tabulated by species, study area and year. TL values were calculated using TrophLab, which is a stand alone application for estimating TL and their standard errors (SE) from quantitative diet composition data. TL ranged from 2.03 ± 0.12 for the herbivorous Hyporhamphus unifasciatus (Hemiramphidae) to 4.80 ± 0.63 for the piscivorous Prionace glauca (Carcharhinidae). The median value of TL was 3.54, whereas 50% of the value of TL ranged between 3.37 and 4.00. Differences were detected between our TL estimations and those obtained for the same species from FishBase. The observed differences could be explained by a number of factors including prey availability and/or composition, sampling procedure, total number of stomachs analyzed and range of length of the sample populations. Significant relationship between of two datasets of TL (present study and FishBase) was determined. Across the datasets analyzed, TL and mean TL per species increased with a corresponding increase in species’ maximum body length. Cluster analysis carried out on contributions of main food items differentiated at a similarity of 45%, nine trophic groups characterized by herbivorous and carnivorous with different preference for crustaceans, fish and cephalopods.Acesso AbertoHábito alimentarPeixeCNPQ::CIENCIAS EXATAS E DA TERRA::OCEANOGRAFIATrabalho de Curso - Graduação - Monografia