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Table 2 Diet composition of S. randalli (n = 3), S. fuscescens (n = 2) and S. lineatus (n = 3) caught in Goro, New Caledonia, and expressed in frequency of occurrence (%F), percent by number (%N) and percent by weight (%W). %IRI: Percent of Index of Relative Importance

From: First record of Siganus randalli (Teleost, Siganidae) in New Caledonia, and comments on its diet

Items prey S. randalli S. lineatus S. fuscescens
F% N% W% %IRI F% N% W% %IRI F% N% W% %IRI
Magnoliophyta
Halophila spp. - - - - - - - - 50.0 1.0 2.8 1.5
Thalassia hemprichii - - - - - - - - 100.0 5.7 8.3 11.5
Rhodophyta
Amphiroa sp. - - - - - - - - 50.0 42.9 55.5 40.2
Bostrychia sp. 100.0 75.6 67.2 74.2 100.0 49.0 44.6 62.0 - - - -
Centroceras sp. - - - - 25.0 0.1 ˂0.1 ˂0.1 - - - -
Ceramiaceae spp. 100.0 0.4 0.1 0.3 50.0 3.0 0.1 1.0 100.0 18.1 1.4 15.9
Ceramium spp. - - - - 50.0 0.9 0.1 0.3 - - - -
Gelidiella sp. - - - - - - - - 50.0 17.1 18.5 14.6
Gelidium sp. 66.7 3.7 3.8 2.6 50.0 0.7 0.4 0.4 - - - -
Gracilaria sp. - - - - 25.0 0.1 0.1 ˂0.1 - - - -
Hypnea spp. - - - - 25.0 ˂0.1 0.1 ˂0.1 50.0 1.0 2.3 1.3
Hypoglossum sp. 33.3 ˂0.1 0.1 ˂0.1 - - - - - - - -
Lomentaria sp. 100.0 4.2 6.9 5.7 100.0 4.6 6.4 7.3 - - - -
Polysiphonia sp. 66.7 1.1 1.8 1.0 50.0 9.0 16.1 8.3 - - - -
Tolypiocladia sp. - - - - 25.0 0.3 0.1 0.1 - - - -
Chlorophyta
Caulerpa verticillata 66.7 0.7 0.4 0.4 75.0 3.3 1.7 2.5 - - - -
Chlorodesmis sp. - - - - 25.0 6.0 10.7 2.8 - - - -
Ulva sp. - - - - - - - - 50.0 4.8 0.9 2.3
Phaeophyta
Padina sp. 33.3 1.5 2.0 0.6 25.0 4.2 2.3 1.1 - - - -
Dictyota sp. 100.0 10.7 17.7 14.8 50.0 9.9 16.7 8.8 - - - -
Invertebrates
 Amphipods 66.7 0.2 0.1 0.1 75.0 0.4 0.3 0.4 - - - -
 Ascidians 33.3 0.3 ˂0.1 0.1 25.0 0.1 0.1 ˂0.1 50.0 2.9 3.8 2.7
 Copepods - - - - 75.0 0.5 ˂0.1 0.2 - - - -
 Foraminiferans 66.7 0.3 ˂0.1 0.1 100.0 3.1 ˂0.1 2.2 50.0 1.9 ˂0.1 0.8
 Halacarids 33.3 0.5 ˂0.1 0.1 25.0 0.2 ˂0.1 ˂0.1 - - - -
 Hydrozoans - - - - - - - - 100.0 4.8 6.6 9.2
 Isopods - - - - 25.0 0.1 ˂0.1 ˂0.1 - - - -
 Diptera larvae - - - - 25.0 0.4 ˂0.1 0.1 - - - -
 Nematods 33.3 0.5 ˂0.1 0.1 100.0 3.3 ˂0.1 2.2 - - - -
 Polychaetes 33.3 0.3 ˂0.1 0.1 75.0 0.8 ˂0.1 0.4 - - - -