Table 1. Table of all predator and prey species sampled in this study, separated by trophic group (TG2 – 5). Mean (± SD) δ13C and δ15N values are for white muscle for all species except crustaceans (analyzed whole). δ13C values are arithmetically lipid-corrected according to Logan et al. 2008.
| Species | Common name | Code | Mean δ13C (SD) | Mean δ15N (SD) | Mean length (SD) (cm) | n |
|---|---|---|---|---|---|---|
| Trophic Group 5 | ||||||
| Isurus oxyrinchus | mako shark | MAKO | −18.21 (0.24) | 16.36 (0.80) | 109.8 (17.9) | 10 |
| Sarda chiliensis | bonito | BON | −17.68 (0.32) | 16.16 (0.18) | 47.8 (0.6) | 12 |
| Seriola lalandi | yellowtail jack | YT | −17.26 (0.57) | 15.90 (0.62) | 73.7 (13.0) | 34 |
| Tetrapturus audax | striped marlin | STM | −17.63 | 15.44 | 215.9 | 1 |
| Xiphias gladius | swordfish | SWD | −17.36 (1.17) | 15.74 (0.80) | 135.2 (29.4) | 21 |
| Thunnus orientalis | Pacific bluefin tuna | PBFT | −17.48 (0.26) | 15.20 (0.34) | 84.8 (3.1) | 42 |
| Thunnus albacares | yellowfin tuna | YFT | −17.70 (0.31) | 15.42 (0.77) | 77.6 (9.7) | 64 |
| Dosidicus gigas | jumbo squid | DG | −18.42 (0.23) | 15.40 (0.52) | 22.4 (4.3) | 17 |
| Loligo opalescens | market squid | LOL | −17.99 (0.65) | 15.29 (0.50) | 4.2 (1.5) | 21 |
| Trophic Group 4 | ||||||
| Lampris guttatus | opah | OPA | −18.26 (0.55) | 14.57 (0.69) | 97.2 (3.7) | 4 |
| Prionace glauca | blue shark | BLSK | −19.01 (0.57) | 15.19 (0.64) | 111.2 (31.8) | 9 |
| Thunnus alalunga | albacore tuna | ALB | −18.35 (0.26) | 14.85 (0.79) | 86.0 (8.2) | 61 |
| Auxis thazard | frigate mackerel | FM | −18.32 | 14.82 | nd | 1 |
| Scomber japonicus | Pacific mackerel | PM | −18.34 (0.64) | 14.40 (0.98) | 18.6 (1.9) | 16 |
| Abraliopsis spp. | squid | ABRL | −18.95 (0.49) | 15.18 (0.36) | 1.9 (0.3) | 4 |
| Lestidiops ringens | slender barracudina | SL BARR | −19.68 (0.16) | 14.73 (0.34) | nd | 5 |
| Onychoteuthis spp. | clubhook squid | ONYC | −18.52 (0.15) | 14.41 (0.34) | 10.3 (1.4) | 6 |
| Trophic Group 3 | ||||||
| Sardinops sagax | sardine | SARD | −19.79 (0.21) | 13.59 (0.57) | 8.2 (1.5) | 18 |
| Cololabis saira | saury | SAUR | −18.85 (0.26) | 13.21 (0.76) | 9.2 (3.1) | 20 |
| Trachurus symmetricus | jack mackerel | JM | −18.89 (0.65) | 13.92 (0.58) | 7.9 (2.8) | 27 |
| Gonatopsis spp. | gonatid squid | GON | −19.46 (0.29) | 13.61 (1.25) | 7.9 (1.8) | 7 |
| Sebastes juv. | rockfish juveniles | SEB | −19.14 (0.78) | 13.76 (0.44) | 6.2 (4.0) | 7 |
| Oxyjulis californica | señorita | SEN | −18.89 (0.01) | 13.11 (0.04) | 17.8 (0.4) | 2 |
| Melanostigma pammelas | midwater eelpout | EELPT | −18.98 (0.31) | 13.94 (0.32) | 7.2 (1.0) | 8 |
| Magnisudis atlantica | duckbill barracudina | DB BARR | −18.90 (0.31) | 13.57 (0.22) | 28.1 (5.7) | 5 |
| Argonauta spp. | argonauta | ARGO | −19.16 (0.37) | 13.51 (0.03) | 1.8 (0.4) | 2 |
| Pleuroncodes planipes | pelagic red crab | RC | −18.65 (0.21) | 13.99 (0.69) | 2.0 (0.1) | 5 |
| Myctophidae spp. | myctophid | MYCT | −18.81 (0.25) | 14.04 (0.17) | 5.6 (1.3) | 5 |
| Trophic Group 2 | ||||||
| Euphausidae spp. | krill | KRILL | −20.06 (0.49) | 12.39 (0.77) | 2.2 (0.3) | 14 |
| Copepoda | calanoid copepod | COPE | −20.26 (0.15) | 11.77 (0.87) | 0.1 (0) | 25 |