Fig. 1
Sampling sites of Phalacrocorax atriceps pellets at Punta León, Chubut coast, and Phalacrocorax gaimardii at Isla Elena, Ría Deseado, Santa Cruz Province, Argentina.
Table 1
Occurrence of prey items in pellets of the Imperial shag Phalacrocorax atriceps from Punta León, Chubut province coast, Argentina.
| Taxa | Species | Ocurrence (%) |
|---|---|---|
| Ophididae | Raneya brasiliensis | 75.31 |
| Genypterus blacodes | 1.23 | |
| Batrachoididae | Triathalassothia argentina | 65.43 |
| Clinidae | Ribeiroclinus eigenmanni | 50.62 |
| Nototheniidae | Patagonotothen sp. | 19.75 |
| Engraulidae | Engraulis anchoita | 24.92 |
| Agonidae | Agonopsis chiloensis | 12.35 |
| Pinguipedidae | Pinguipes brasilianus | 10.28 |
| Pseudopercis sp. | 12.35 | |
| Cheilodactylidae | Nemadactylus bergi | 6.17 |
| Serranidae | Acanthistius brasilianus | 4.94 |
| Zoarcidae | Austrolycus laticinctus | 3.70 |
| Paralichthyidae | Paralichthys sp. | 4.02 |
| Xystreurys rasile | 2.47 | |
| Percophidae | Percophis brasiliensis | 2.43 |
| Atherinopsidae | Odontesthes sp. | 10.48 |
| Merlucciidae | Merluccius hubbsi | 5.23 |
| Triglidae | Prionotus sp. | 1.28 |
| Myxinidae | Myxine sp. | 1.25 |
| Rajidae | Raja sp. | 1.2 |
| Octopodidae | Enteroctopus megalocyathus | 22.22 |
| Octopus tehuelchus | 19.75 | |
| Bivalvia | Heterodonta | 9.88 |
| Prosobranchia | Tegula sp. | 8.64 |
| Ostracoda | Ostracoda | 8.64 |
| Amphipoda | Gammaridae | 2.47 |
| Anomura | Pachicheles chubutensis | 2.47 |
| Caridea | Atlantopandalus sp. | 4.94 |
| Nauticaris sp. | 1.29 | |
| Chorismus sp. | 1.26 | |
| Campylonotus sp. | 1.23 | |
| Betaeus sp. | 1.21 | |
| Pterygosquilla sp. | 1.19 | |
| Brachiura | Coenophthalmus tridentatus | 4.93 |
| Solenoceridae | Pleoticus muelleri | 1.23 |
| Polychaeta | Eunice sp. | 12.35 |
| Polyonidae | 6.17 | |
| Aphrodita sp. | 3.70 | |
Table 2
Occurrence of prey items in pellets of the Red-legged cormorant Phalacrocorax gaimardi from Isla Elena, Ría Deseado, Santa Cruz province coast, Argentina.
| Taxa | Species | Ocurrence (%) |
|---|---|---|
| Clupeidae | Sprattus fueguensis | 32.86 |
| Ramnogster arcuata | 14.29 | |
| Nototheniidae | Patagonotothen sp. | 2.86 |
| Pinguipedidae | Pinguipes brasilianus | 1.43 |
| Atherinopsidae | Odontesthes sp. | 10.68 |
| Zoarcidae | Zoarcid | 1.43 |
| Loliginidae | Loligo gahi | 8.57 |
| Loligo sp. | 12.86 | |
| Crustacea | Eurypodius latreilli | 4.29 |
| Nereididae | Nereidid | 4.23 |
Fig. 2
Results of Correspondence Analysis (CA) revealing the larvae-prey associations in pellets of Phalacrocorax atriceps from Punta León, Chubut coast, Argentina. Contr: Contracaecum sp. L3; Anisk: Anisakis sp. L3; Pseud: Pseudoterranova sp. L3; Terran: Terranova sp. L3; En: Engraulis anchoita; Od: Odontesthes sp.; Ra: Raneya brasiliensis; Tr: Triathalassothia argentina; Ri: Ribeiroclinus eigenmanni; Pt: Patagonotothen sp.; Ag: Agonopsis chiloensis; Au: Austrolycus laticinctus; Pa: Paralichthys sp.; Pe: Percophis brasiliensis; Et: Enteroctopus megalocyathus; Oc: Octopus tehuelchus; Os: Ostracoda; Ga: Gammaridae; At: Atlantopandalus sp.; Co: Coenophthalmus tridentatus; Eu: Eunice sp.; Po: Polynoidae; Af: Aphrodita sp.
Fig. 3
Results of Correspondence Analysis (CA) revealing the parasite-pray associations in pellets of Phalacrocorax gaimardii from Isla Elena, Cruz Province, Argentina. Contr: Contracaecum sp. L3; Hyster: Hysterothylacium sp. L3; Sp: Sprattus fueguensis; Rg; Ramnogster arcuata; Od: Odontesthes sp.; Pt: Patagonotothen sp.; Lg: Loligo gahi; Lo: Loligo sp.; Ne: Nereididae.