Table 3 Detected prey and their frequency of occurrence in scat samples
From: How animals distribute themselves in space: energy landscapes of Antarctic avian predators
Taxa | Gentoo | Chinstrap | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec 2013 | Dec 2014 | Dec 2016 | Jan 2017 | |||||||||
New I., South | New I., South | New I., North | Livingston I. | Deception I. | ||||||||
Adults | First chicks | Second chicks | Unk. | All a | All a | Adult (%) | First chicks (%) | Second chicks (%) | Adults (%) | First chicks (%) | Second chicks (%) | |
n = 17 (17) | n = 24 (19) | n = 15 (14) | n = 17 (14) | n = 32 (31) | n = 29 (29) | n = 36 (16) | n = 11 (6) | n = 5 (3) | n = 19 (18) | n = 23 (10) | n = 23 (8) | |
Arthropoda, Crustacea, Malacostraca | ||||||||||||
Amphipoda, Hyperiidae | ||||||||||||
Themisto sp. | – | – | – | D | D | D | – | – | – | – | – | – |
Decapoda | ||||||||||||
Pandalidae (shrimps) | ||||||||||||
Pandalus sp. | – | – | – | D | D | D | – | – | – | – | – | – |
Galatheidae | ||||||||||||
Munida gregaria lobster krill | – | – | – | D | D | D | – | – | – | – | – | – |
Euphausiacea | ||||||||||||
Euphausia superba Antarctic krill | – | – | – | – | – | – | 100 | 100 | 100 | 100 | 100 | 100 |
Thysanoessa macrura | – | – | – | – | – | – | 25 | 50 | 33 | 1 | 10 | 25 |
Mollusca, Cephalopoda | ||||||||||||
Octopoda | ||||||||||||
Enteroctopus megalocyathus Southern red octopus | – | – | – | D | – | – | – | – | – | – | – | – |
Oegopsida | ||||||||||||
Onychoteuthidae (squids) | ||||||||||||
Moroteuthis sp. | D | – | – | D | D | D | `- | – | – | n | – | – |
Ommastrephidae (squids) | – | – | – | – | – | D | – | – | – | – | – | – |
Pyroteuthidae (fire squids) | – | – | – | – | D | – | – | – | – | – | – | – |
Sepida | ||||||||||||
Sepiolidae (bobtail squids) | – | – | – | – | – | D | – | – | – | – | – | – |
Chordata, Vertebrata, Actinopterygii, Teleostei | ||||||||||||
Clupeiformes | ||||||||||||
Clupeidae | ||||||||||||
Sprattus sp. (spratts) | D | D | D | D | D | D | – | – | – | – | – | – |
Gadiformes | ||||||||||||
Gadidae (codfishes) | D | D | D | D | D | D | – | – | – | – | – | – |
Micromesistius sp. (blue whitings) | D | D | D | D | D | D | – | – | – | – | – | – |
Myctophiformes | ||||||||||||
Myctophidae | D | – | – | – | – | – | – | – | – | – | – | – |
Electrona sp. | – | – | – | D | – | – | – | – | – | – | – | – |
Electrona antarctica Antarctic lanternfish | – | – | – | – | – | – | – | – | – | 1 | – | – |
Gymnoscopelus nicholsi Nichol’s lanternfish | – | – | – | – | – | – | – | – | – | 1 | – | – |
Perciformes | ||||||||||||
Channichthyidae (crocodile icefishes) | – | – | – | – | – | D | – | – | – | – | – | – |
Chaenodraco wilsoni spiny icefish | – | – | – | – | – | – | – | – | 33 | – | – | – |
Champsocephalus gunnari icefish | D | D | D | D | D | D | 13 | – | – | – | – | – |
Chionodraco sp. | – | – | – | – | – | – | – | 17 | – | 1 | – | – |
Cryodraco antarcticus long-fingered icefish | – | – | – | – | – | – | – | 17 | – | – | – | – |
Nototheniidae | ||||||||||||
Dissostichus eleginoides Chilean sea bass | – | D | D | – | – | – | – | – | – | – | – | – |
Notothenia coriiceps black rockcod | – | – | – | – | – | – | 19 | – | – | – | – | – |
Patagonotothen sp. | D | – | – | – | – | – | – | – | – | – | – | – |
Patagonotothen tessellata black Southern cod | D | D | D | D | D | D | – | – | – | – | – | – |
Patagonotothen wiltoni | – | D | – | – | D | – | – | – | – | – | – | – |
Paranotothenia sp. | – | – | – | – | – | – | 6 | – | – | 1 | – | – |
Scorpaeniformes | ||||||||||||
Agonidae (alligatorfishes) | D | D | D | D | D | D | – | – | – | – | – | – |
Psychrolutidae (blobfishes) | ||||||||||||
Psychrolutes sp. | D | D | – | D | D | – | – | – | – | – | – | – |