Supplemental table 1 - Numerical abundance (%N), weight (%W), frequency of occurrence (%F) and Index of Relative Importance (%IRI = %F *[%N+%W]) for each food item found in the stomach contents of dusky grouper (Epinephelus marginatus) captured in littoral zone (n = 78) and the neritic zone (n = 113) of the southern Brazilian coast.

Prey items / Littoral zone / Neritic zone
%F / %N / %W / %IRI / %F / %N / %W / %IRI
Mollusca
Gastropoda
Columbellidae
Anachis isabellei / 1.30 / 0.56 / 0.05 / 0.03
Anachis spp / 2.60 / 2.22 / 0.23 / 0.25
Gastropoda unidentified / 3.54 / 2.00 / 0.14 / 0.32
Bivalvia
Mytilidae
Mytilus edulis platensis / 2.60 / 1.11 / 0.00 / 0.11
Perna perna / 1.30 / 0.56 / 0.08 / 0.03
Ostreidae
Ostrea equestris / 1.30 / 0.56 / 0.03 / 0.03
Bivalve unidentified / 2.60 / 1.11 / 0.18 / 0.13 / 3.54 / 1.60 / 0.46 / 0.31
Cephalopoda
Octopodidae
Octopus vulgaris / 0.88 / 0.40 / 0.07 / 0.02
Octopus tehuelchus / 0.88 / 0.40 / 4.04 / 0.17
Arthropoda
Maxillopoda
Balanomorpha
Balaenidae unidentified / 0.88 / 0.40 / 0.01 / 0.02
Malacostraca
Anomura
Porcellanidae
Pachycheles chubutensis / 1.30 / 0.56 / 0.26 / 0.04
Porcellanidae unidentified / 0.88 / 0.40 / 0.07 / 0.02
Diogenidae
Loxopagurus loxochelis / 0.88 / 0.40 / 0.16 / 0.02
Brachyura
Majidae
Libinia spinosa / 5.19 / 2.78 / 0.77 / 0.72
Podochela gracilipes / 0.88 / 0.40 / 0.21 / 0.02
Majidae unidentified / 5.31 / 2.80 / 0.58 / 0.76
Xanthidae
Eurypanopeus abbreviatus / 5.19 / 2.22 / 6.02 / 1.66 / 2.65 / 1.60 / 2.61 / 0.47
Hexapanopeus schmitti / 3.90 / 1.67 / 0.34 / 0.30 / 0.88 / 0.40 / 0.07 / 0.02
Hexapanopeus caribbaeus / 1.30 / 0.56 / 0.03 / 0.03
Menippe nodifrons / 18.18 / 12.78 / 21.33 / 24.10
Panopeus austrobesus / 6.49 / 3.89 / 3.98 / 1.98
Panopeus bermudensis / 3.54 / 2.40 / 0.85 / 0.49
Eurytium limosum / 0.88 / 0.40 / 1.77 / 0.08
Pilumnus caribaeus / 5.31 / 3.20 / 1.77 / 1.12
Rhithropanopeus harrisii / 0.88 / 0.40 / 0.10 / 0.02
Xanthidae unidentified / 7.79 / 3.89 / 1.10 / 1.51 / 14.16 / 10.00 / 10.91 / 12.56
Varunidae
Cyrtograpsus altimanus / 1.30 / 0.56 / 0.03 / 0.03
Cyrtograpsus angulatus / 7.08 / 5.60 / 2.47 / 2.42
Neohelice granulata / 1.77 / 1.60 / 0.70 / 0.17
Varunidae unidentified / 0.88 / 0.40 / 0.10 / 0.02
Pilumnidae
Pilumnus dasypodus / 5.19 / 2.78 / 0.50 / 0.66
Portunidae
Arenaeus cribrarius / 1.30 / 0.56 / 0.06 / 0.03
Callinectes danae / 9.09 / 7.22 / 11.26 / 6.53
Callinectes sapidus / 12.99 / 7.22 / 15.67 / 11.55 / 2.65 / 1.20 / 13.01 / 1.60
Callinectes unidentified / 5.19 / 2.22 / 1.32 / 0.71 / 3.54 / 2.80 / 2.73 / 0.83
Portunus spinimanus / 2.65 / 2.00 / 0.73 / 0.31
Portunidae unidentified / 5.31 / 4.80 / 1.54 / 1.43
Brachyura unidentified / 23.38 / 13.89 / 9.34 / 21.10 / 23.01 / 11.20 / 6.40 / 17.18
Caridea
Hippolytidae
Lysmata wurdemanni / 3.90 / 1.67 / 0.44 / 0.32
Caridae unidentified / 6.49 / 6.11 / 1.93 / 2.03 / 20.35 / 13.20 / 2.39 / 13.46
Dendrobranchiata
Penaeidae
Farfantepenaeus paulensis / 1.77 / 1.60 / 0.41 / 0.15
Penaeidae unidentified / 10.62 / 5.60 / 1.30 / 3.11
Solenoceridae
Pleoticus muelleri / 3.90 / 3.33 / 1.07 / 0.67
Chordata
Actinopterygii
Epinephelidae
Epinephelus marginatus / 0.88 / 0.40 / 11.48 / 0.45
Ariidae
Genidens barbus / 1.30 / 1.67 / 4.20 / 0.30
Genidens unidentified / 0.88 / 0.40 / 0.29 / 0.03
Labridae
Labridae unidentified / 1.77 / 1.20 / 0.58 / 0.13
Sciaenidae
Micropogonias furnieri / 6.19 / 2.80 / 14.71 / 4.60
Umbrina canosai / 1.30 / 0.56 / 0.02 / 0.03 / 0.88 / 0.40 / 0.09 / 0.02
Engraulidae
Lycengraulis grossidens / 1.30 / 0.56 / 3.37 / 0.20
Batrachoididae
Porichthys porosissimus / 1.30 / 0.56 / 0.17 / 0.04 / 0.88 / 0.80 / 2.15 / 0.11
Phycidae
Urophycis brasiliensis / 0.88 / 0.40 / 0.02 / 0.02
Gobiidae
Gobionellus unidentified / 1.30 / 0.56 / 0.05 / 0.03 / 0.88 / 0.40 / 0.13 / 0.02
Blenniidae
Hypleurochilus fissicornis / 6.49 / 2.78 / 1.90 / 1.18
Pleuronectiformes unidentified / 0.88 / 0.40 / 0.26 / 0.02
Actinopterygii unidentified / 22.08 / 13.33 / 14.26 / 23.67 / 29.20 / 15.60 / 14.69 / 37.52
Non-blue crabs combined / 71.43 / 52.48 / 51.97 / 75.29 / 57.52 / 41.60 / 28.79 / 52.40
Fishes combined / 32.47 / 17.82 / 20.52 / 12.56 / 37.17 / 22.80 / 44.40 / 32.32
Blue crabs combined / 24.68 / 15.35 / 24.24 / 9.86 / 10.62 / 10.80 / 18.00 / 3.96
Shrimps combined / 14.29 / 9.90 / 2.94 / 1.85 / 32.74 / 20.40 / 4.09 / 10.38
Mollusks combined / 9.09 / 4.46 / 0.33 / 0.44 / 7.96 / 4.40 / 4.71 / 0.94