Table 3. Average, minimum, and maximum values of δ13C and δ15N for prey species, average for prey groups used in the analysis Simmr, Bayesian Contribution Interval (BCI) obtained for every prey group, Importance Relative Index (IRI)

Prey* Prey species in the study area δ13C (‰) Mean (min-max) δ15N (‰) Mean (min-max) Prey group for Simmr analysis Average δ13C Average δ15N Simmr 97.5% BCI IRI (%)* n
Palaemonidae Macrobrachium panamense –21.9 (–23.5 to –19.3) 7.6 (6.4–9.3) Shrimps and prawns omnivores (SHRIMPS-OMN) –22.0 ± 1.2 8.1 ± 1.2 6 (1–14) 6 14
Processidae Ambidexter panamensis –22.2 (–24.0 to –21.3) 8.8 (7.9–10.0) 6
Alpheidae Leptalpheus canterakintzi –22.7 9.3 1
Estomatopoda Cloridopsis dubia –21.9 9.9 1
Penaeidae Farfantepenaeus sp. –22.1 (–23.7 to –20.5) 7 (6.0–7.9) Shrimps and prawns detritivores (SHRIMPS-DET) –25.9 ± 2.0 5.3 ± 1.0 25 (13–35) 8 10
Alpheidae Alpheus colombiensis –25.6 (–27.1 to –23.8) 4.9 (4.0–5.7) 20
Salmoneus malagensis –6.9 (–27.4 to –26.2) 6.5 (6.0–7.3) 7
Sesarmidae Sesarma rizophorae –24.9 (–22.4 to –27.5) 3.5 (2.2–5.4) Herbivore crabs (CRABS-HER) –24.7 ± 1.1 3.8 ± 1.2 9 (2–19) 5 9
Aratus pacificus –24.5 (–26.2 to –23.1) 4.1 (2.1–6.2) 13
Grapcidae Goniosis pulchra –24.2 (–25.2 to –23.1) 5.9 (4.5–7.8) Omnivore and carnivore crabs (CRABS-OMN) –22.9 ± 2.1 7.0 ± 1.6 6 (1–13) 6 21
Xanthidae Panopeus chilensis –22.9 (–20.9 to 25.6) 7.7 (5.5–9.9) 14
Portunidae Callinectes arcuatus –20.7 (–16.2 to –23.1) 8.3 (3.1–10.0) 10
Porcellanidae Petrolisthes zacae –20.8 (–22.6 to 18.6) 5.2 (4.3–6.4) Porcelain crabs (PORCE) –20.8 ± 1.2 5.2 ± 0.6 4 (1–8) 23 20
Fish Intertidal fish –24.3 (–27.5 to –22.3) 8.3 (7.5–9.2) Benthic fish (FISH-BEN) –23.6 ± 1.7 8.6 ± 0.6 28 (12–42) 37 30
Subtidal fish –22.9 (–27.5 to –22.3) 9.4 (7.5–9.2) Subtidal fish (FISH-SUB) –23.4 ± 1.6 9.5 ± 1.2 12 (2–24) 35
Annelida Annelida undetermined –26.0 (–23.9 to –28.3) 5.6 (2.3–8.0) Mangrove worms (WORMS) –25.6 ± 1.7 4.3 ± 1.5 11 (2–21) 0.2 15
Data from Ramirez-Martínez et al. (2016).
n, number of specimens analyzed for isotopic data; SHRIMPS-OMN, Omnivore crabs; SHRIMPS-DET, Detritivore shrimps; CRABS-HER, Herbivore crabs; CRABS-OMN, Omnivore crabs; PORCE, Porcelain crabs; FISH-BEN, Benthonic fish; FISH-SUB, Subtidal fish; WORMS, annelids.