FN Archimer Export Format
PT J
TI Trophic structure of a nektobenthic community exploited by a multispecific bottom trawling fishery in Northeastern Brazil
BT 
AF LIRA, Alex Souza
   Lucena--Frédou, Flávia
   Ménard, Frédéric
   Frédou, Thierry
   Guazzelli Gonzalez, Julio
   Ferreira, Valdimere
   Souto Rosa Filho, José
   Munaron, Jean-Marie
   LE LOCH, Francois
AS 1:1,2;2:1;3:3;4:1;5:1,4;6:1;7:1;8:1;9:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brazil
   IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280 Plouzané, France
   Aix Marseille Univ, Univ Toulon, CNRS, IRD, MIO, UM110, Marseille, France
   MARBEC, Univ. Montpellier, CNRS, IRD, Ifremer, 34095, Montpellier, France
C2 UNIV FED RURAL PERNAMBUCO UFRPE, BRAZIL
   IRD, FRANCE
   UNIV AIX MARSEILLE, FRANCE
   IRD, FRANCE
UM LEMAR
   MARBEC
IN WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.752
TC 2
UR https://archimer.ifremer.fr/doc/00678/79040/81479.pdf
   https://archimer.ifremer.fr/doc/00678/79040/81480.docx
   https://archimer.ifremer.fr/doc/00678/79040/81481.docx
LA English
DT Article
AB We used complementary stable isotope (SIA) and stomach content (SCA) analyses to investigate feeding relationships among species of the nektobenthic communities and the potential ecological effects of the bottom trawling of a coastal ecosystem in northeastern Brazil. Carbon (δ13C) and nitrogen (δ15N) compositions were determined for five basal sources and 28 consumers, from zooplankton to shrimp and fish species. Fishes and basal sources showed a broad range of δ15N (fishes: 6.49–14.94‰; sources: 2.58–6.79‰) and δ13C values (fishes: -23.86 to -13.71‰; sources: -24.32 to -13.53‰), while shrimps and crabs exhibited similar nitrogen and carbon ratios. Six trophic consumer groups were determined among zooplankton, crustaceans and fishes by SIA, with trophic pathways associated mostly with benthic sources. SCA results indicated a preference for benthic invertebrates, mainly worms, crabs and shrimps, as prey for the fish fauna, highlighting their importance in the food web. In overall, differences between SCA and the SIA approaches were observed, except for groups composed mainly for shrimps and some species of high δ15N values, mostly piscivorous and zoobenthivores. Given the absence of regulation for bottom trawling activities in the area, the cumulative effects of trawling on population parameters, species composition, potentially decreasing the abundance of benthic preys (e.g., shrimps, worms and crabs) may lead to changes in the trophic structure potentially affect the food web and the sustainability of the fishery. 
PY 2021
PD FEB
SO Plos One
SN 1932-6203
PU Public Library of Science (PLoS)
VL 16
IS 2
UT 000617379900020
DI 10.1371/journal.pone.0246491
ID 79040
ER

EF