Stable isotopes reveal trophic segregation by sex and age in the southern giant petrel in two different food webs

• Published in: Marine Ecology Progress Series
• Main Authors: Forero, Manuela G., González-Solís, Jacob, Hobson, Keith A., Donázar, José A., Bertellotti, Néstor Marcelo, Blanco, Guillermo, Bortolotti, Gary R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Inter-Research
• Subjects: CARBON; NITROGEN; DIET; INTERSPECIFIC VARIABILITY; SEXUAL SEGREGATION; MACRONECTES GIGANTEUS; https://purl.org/becyt/ford/1.6; https://purl.org/becyt/ford/1; Antarctic; The Antarctic; Patagonia; Bird Island; Giganteus; Antarc*; Antarctica; Giant Petrel; Macronectes giganteus
• Online Access: http://hdl.handle.net/11336/107598

We investigated trophic ecology variation among colonies as well as sex- and age-related differences in the diet of the southern giant petrel Macronectes giganteus, a long-lived seabird that is sexually dimorphic in size. We measured stable isotopes (δ13C, δ15N) in blood samples collected during bre...