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Diet of the south polar skua Catharacta maccormicki and the brown skua C. antarctica lonnbergi at Cierva Point, Antarctic Peninsula

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Abstract

South polar skuas, SPS, (Catharacta maccormicki) and brown skuas, BS, (C. antarctica lonnbergi) are regarded as opportunistic predators. When breeding in sympatry, BS feed mainly on penguin eggs and chicks, while SPS forage almost exclusively at sea. The objective of this study was to determine the diet composition of adult SPS and BS breeding in sympatry, in order to assess food resource partitioning between these species. The total number of food items consumed was 375 for BS and 682 for SPS in 1992–93, and 427 for BS and 579 for SPS in 1995–96. The pellets composition was significantly correlated between skua species for the same breeding season (r s = 0.67, p = 0.0062 and r s = 0.81, p < 0.001, for 1992–93 and 1995–96, respectively), and between breeding seasons for the same skua species (r s = 0.71, p = 0.001 and r s = 0.81, p < 0.001, for SPS and BS, respectively). Trophic niche breadth of BS was wider than that of SPS (B A(BS) = 0.28 and B A(SPS) = 0.24; Z = 7.67; p < 0.001). The trophic niche overlap between BS and SPS was over 65% in both breeding seasons. In agreement with other studies on the diet of these skua species in situations of sympatry, SPS consumed more fish and BS consumed more birds.

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References

  • Agraz JL, Quintana RD, Acero JM (1994) Ecología de los ambientes terrestres de Punta Cierva, Costa de Danco, Península Antártica. Contr Inst Ant Arg 439:1–32

    Google Scholar 

  • Baker SC, Barbraud C (2001) Foods of the south polar skua Catharacta maccormicki at Ardery Island, Windmill Islands, Antarctica. Polar Biol 24:59–61

    Article  Google Scholar 

  • Barrett RT, Camphuysen KCJ, Anker-Nilssen T, Chardine JW, Furness RW, Garthe S, Hüppop O, Leopold MF, Montevecchi WA, Veit RR (2007) Diet studies of seabirds: a review and recommendations. ICES J Mar Sci 64:1675–1691

    Article  Google Scholar 

  • Bó MS, Copello S (2001) Distribution and abundance of breeding birds at Deception Island, South Shetland Islands, Antarctica. Mar Ornithol 29:39–42

    Google Scholar 

  • Carss DN, Bevan RM, Bonetti A, Cherubini G, Davies J, Doherty D, El Hili A, Feltham MJ, Grade N, Granadeiro JP, Gremillet D, Gromadzka J, Harari Y, Holden T, Keller T, Lariccia G, Mantovani R, McCarthy TM, Mellin M, Menke T, Mirowska-Ibron I, Muller W, Musil P, Nazirides T, Suter W, Trauttmansdorff JFG, Volponi S, Wilson B (1997) Techniques for assessing cormorant diet and food intake: towards a consensus review. Supplemento alle Ricerche di Biologia della Selvaggina 26:197–230

    Google Scholar 

  • Casaux RJ, Barrera-Oro ER (1993) The diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis feeding in the Bransfield Strait. Antarct Sci 5:335–338

    Article  Google Scholar 

  • Coria N, Blendiger PG, Montalti D (1996) The breeding birds of Cape Geddes, Laurie Island, South Orkney Islands, Antarctica. Mar Ornithol 24:43–44

    Google Scholar 

  • De Villa-Meza A, Martínez Meyer E, López González C (2002) Ocelot (Leopardus pardales) food habits in a tropical deciduous forest of Jalisco, México. Am Midl Nat 148:146–154

    Article  Google Scholar 

  • Duffy DC, Jackson S (1986) Diet studies of seabirds: a review of methods. Colon Waterbirds 9:1–17

    Article  Google Scholar 

  • Emslie SD, Karnovsky N, Trivelpiece W (1995) Avian predation at penguin colonies on King George Island, Antarctica. Wilson Bull 107:317–327

    Google Scholar 

  • Eklund CR (1961) Distribution and life history studies of the south polar skua. Bird Banding 32:187–123

    Google Scholar 

  • Favero M, Bellagamba PJ, Farenga M (1991) Abundancia y distribución espacial de las poblaciones de aves de Punta Armonía y Punta Dedo, Isla Nelson, Shetland del Sur. Riv Ital Ornitol 61:85–96

    Google Scholar 

  • Favero M, Silva RM, Mauco L (2000) Diet of royal (Thalasseus masimus) and sandwich (T. sandvicensis) terns during the austral winter in the Buenos Aires Province, Argentina. Ornitol Neotrop 11:259–262

    Google Scholar 

  • Furness RW (1987) The skuas. Poyser, Calton

    Google Scholar 

  • Furness RW, Hislop JRG (1981) Diets and feeding ecology of great skuas Catharacta skua during the breeding season in Shetland. J Zool 195:1–23

    Article  Google Scholar 

  • Gales RP (1985) Validation of the stomach-flushing technique for obtaining stomach contents of penguins. Ibis 129:335–343

    Article  Google Scholar 

  • Green K (1986) Observations on the food of the south polar skua Catharacta maccormicki near Davis, Antarctica. Polar Biol 6:185–186

    Article  Google Scholar 

  • Hahn S, Peter HU (2003) Feeding territoriality and the reproductive consequences in brown skuas Catharacta antarctica lonnbergi. Polar Biol 26:552–559

    Article  Google Scholar 

  • Hemmings AD (1984) Aspects of the breeding biology of McCormick´s skua Catharacta maccormicki at Signy Island, South Orkney Islands. Br Antarct Surv Bull 65:65–79

    Google Scholar 

  • Hetch T (1987) A guide to the otoliths of Southern Ocean fishes. S Afr J Antarct Res 17:1–87

    Google Scholar 

  • Hull C, Carter C, Whitehead MD (1994) Aspects of breeding chronology and success of the Antarctic skua Catharacta maccormicki at Magnetic Island, Prydz Bay, Antarctica. Corella 18:37–40

    Google Scholar 

  • Hurlbert S (1978) The measurement of niche overlap and some relatives. Ecology 59:67–77

    Article  Google Scholar 

  • Jaksic F, Medel R (1987) El acuchillamiento de datos como método de obtención de intervalos de confianza y de prueba de hipótesis para índices ecológicos. Medio Ambiente 8:95–103

    Google Scholar 

  • Jackson S, Ryan PG (1986) Differential digestion rates of prey by white-chinned petrels Procellaria aequinoctialis. Auk 103:617–619

    Google Scholar 

  • Jackson S, Duffy DC, Jenkins G (1987) Gastric digestion in marine vertebrate predators: in vitro standards. Funct Ecol 1:287–291

    Article  Google Scholar 

  • Jahncke J, Rivas C (1998) Recovery, erosion and retention of otoliths in pellets of guanay cormorant: are pellets really good diet indicators? Bol Inst Mar Perú 17:35–46

    Google Scholar 

  • Krebs C (1999) Ecological methodology, 2nd edn. Benjamin Cummings, Menlo Park

    Google Scholar 

  • Kubetzki U, Garthe S (2003) Distribution, diet and habitat selection by four sympatrically breeding gull species in the south-eastern North Sea. Mar Biol 143:199–207

    Article  Google Scholar 

  • Le Morvan P, Mougin JL, Prévost J (1967) Ecologie du skua antarctique (Stercorarius skua maccormicki) dans l´archipel de Pointe Geologie (Terre Adelie). Oiseau 37:193–220

    Google Scholar 

  • Maxon SJ, Bernstein NP (1982) Kleptoparasitism by south polar skuas on blue-eyed shags in Antarctica. Wilson Bull 92:157

    Google Scholar 

  • Moncorsps S, Chapuis JL, Hanbreux D, Bretagnolle V (1998) Diet of brown skua Catharacta skua lonnbergi on the Kerguelen archipelago: comparison between techniques and between islands. Polar Biol 19:9–16

    Article  Google Scholar 

  • Montalti D, Soave GE (2002) The birds of Seymour Island, Antarctica. Ornitol Neotrop 13:267–271

    Google Scholar 

  • Moors PJ (1980) Southern great skuas on Antipodes Islands, New Zealand: observations on foods, breeding, and growth of chicks. Notornis 27:133–146

    Google Scholar 

  • Mougeot F, Genevois F, Bretagnolle V (1998) Predation on burrowing petrels by the brown skua (Catharacta skua lönnbergi) at Mayes Island, Kerguelen. J Zool 244:429–438

    Google Scholar 

  • Müller-Schwarze D, Müller-Schwarze C (1973) Differential predation by south polar skuas in an Adélie penguin rookery. Condor 75:127–131

    Article  Google Scholar 

  • Müller-Schwarze D, Müller-Schwarze C (1977) Interaction between south polar skuas and Adélie penguins. In: Llano GA (ed) Adaptations within Antarctic ecosystems. Smithsonian Institution, Washington, pp 619–646

    Google Scholar 

  • Mund MJ, Miller GD (1995) Diet of the south polar skua Catharacta maccormicki at Cape Bird, Ross Island, Antarctica. Polar Biol 15:453–455

    Article  Google Scholar 

  • Norman FI, Ward SJ (1990) Foods of the south polar skua at Hop Island, Rauer Group, East Antarctica. Polar Biol 10:489–493

    Article  Google Scholar 

  • Norman FI, McFarlane RA, Ward SJ (1994) Carcasses of Adélie penguins as food source for south polar skuas: some preliminary observations. Wilson Bull 106:26–34

    Google Scholar 

  • Osborne BC (1985) Aspects of the breeding biology and feeding behaviour of the subantarctic skuas Catharacta lonnbergi on Bird Island, South Georgia. Br Antarct Surv Bull 66:57–71

    Google Scholar 

  • Parmelee DF, Bernstein NP, Neilson DR (1978) Impact of unfavourable ice conditions on bird productivity at Palmer Station during the 1977–78 field season. Antarct J US 13:146–147

    Google Scholar 

  • Peter HU, Kaiser M, Gebaner A (1990) Ecological and morphological investigations on south polar skua (Catharacta maccormicki) and brown skua (Catharacta skua lonnbergi) on Fildes Peninsula, King George Island, South Getland Islands. Zool JB Syst 117:201–218

    Google Scholar 

  • Pietz PJ (1987) Feeding and nesting ecology of sympatric south polar and brown skuas. Auk 104:617–627

    Google Scholar 

  • Quintana RD, Cirelli V, Orgeira JL (2000) Abundance and spatial distribution of birds popularions at Cierva Point, Antarctic Peninsula. Mar Ornithol 28:21–27

    Google Scholar 

  • Raya Rey AN, Montalti D (2000) Dieta del skua polar del sur Catharacta maccormicki y del skua pardo C. Antarctica. IX Congreso de Biodiversidad y Zoología de Vertebrados, Buenos Aires. pp 112

    Google Scholar 

  • Reid K (1996) A guide to the use of otholits in the study of predators at South Georgia. British Antarctic Survery, Cambridge

    Google Scholar 

  • Reinhardt K (1997) Nahrung und fütterung antarktischer Raubmöwen Catharacta antarctica lombergi und C. maccormicki. J Ornithol 138:193–213

    Article  Google Scholar 

  • Reinhardt K, Hahn S, Peter H-U, Wemhoff H (2000) A review of the diet of southern hemisphere skua. Mar Ornithol 28:7–19

    Google Scholar 

  • Ritz MS (2007) Sex-specific mass loss in chick-rearing south polar skuas Stercorarius maccormicki: stress induced or adaptive? Ibis 149:156–165

    Article  Google Scholar 

  • Ritz MS, Hahn S, Janicke T, Peter H-U (2006) Hydridisation between south polar skua (Catharacta maccormicki) and brown skua (C. antarctica lonnbergi) in the Antarctic Peninsula region. Polar Biol 29:153–159

    Article  Google Scholar 

  • Ryan PG, Moloney CL (1991) Prey selection and temporal variation in the diet of subantarctic skuas at Inaccessible Island, Tristan da Cunha. Ostrich 62:52–58

    Google Scholar 

  • Schulz M, Gales R (2004) Winter diet of the subantarctic skua Catharacta antarctica at Macquarie Island. Mar Ornithol 32:179–181

    Google Scholar 

  • Siegel S, Castellán NJ (1988) Nonparametric statistics for the behavioural sciences. Mc Graw-Hill, New York

    Google Scholar 

  • Thomas D, Taylor E (1990) Study designs and test for comparing resource use and availability. J Wildl Manage 54:332–330

    Google Scholar 

  • Trillmich F (1978) Feeding territories and breeding success of south polar skuas. Auk 95:23–33

    Google Scholar 

  • Trivelpiece W, Butler RG, Volkman NJ (1980) Feeding territories of brown skuas (Catharacta lonnbergi). Auk 97:669–676

    Google Scholar 

  • Votier SC, Bearhop S, Ratcliffe N, Furness RW (2001) Pellets as indicators of diet in great skuas Catharacta skua. Bird Study 48:373–376

    Article  Google Scholar 

  • Votier SC, Bearhop S, MacCormick A, Ratcliffe N, Furness RW (2003) Assessing the diet of great skuas, Catharacta skua, using five different techniques. Polar Biol 26:20–26

    Google Scholar 

  • Votier SC, Furness RW, Bearhop S, Crane JE, Caldow RWG, Catry P, Ensor K, Hamer KC, Hudson AV, Kalmbach E, Klomp NI, Pfeiffer S, Philips RA, Prieto I, Thompson DR (2004a) Changes in fisheries discard rates and seabird communities. Nature 427:727–730

    Article  PubMed  CAS  Google Scholar 

  • Votier SC, Bearhop S, Ratcliffe N, Philips RA, Furness RW (2004b) Predation by great skuas at a large seabird colony. J Appl Ecol 41:1117–1128

    Article  Google Scholar 

  • Votier SC, Bearhop S, Crane JE, Arcos JM, Furness RW (2007) Seabird predation by great skuas: intra-specific competition for food? J Avian Biol 38:234–246

    Article  Google Scholar 

  • Williams R, McEldowney A (1990) A guide to the fish otholits from waters of the Australian Antarctic Territory, Heard and Mcquire Islands. ANARE Res Notes 75:1–173

    Google Scholar 

  • Young EC (1963) Feeding habits of the south polar skua Catharacta maccomircki. Ibis 105:301–318

    Article  Google Scholar 

  • Young EC (1970) The techniques of a skua-penguin study. In: Holdgate MW (ed) Antartic ecology. Academic Press, London, pp 568–584

    Google Scholar 

  • Young EC (1978) Behavioural ecology of lonnbergi skuas in relation to environment on the Chatham Islands, New Zealand. NZ J Zool 5:401–416

    Google Scholar 

  • Young EC (1990) Diet of the south polar skua Catharacta maccormichi determined from regurgitated pellets: limitations of a technique. Polar Rec 26:124–125

    Article  Google Scholar 

  • Young EC (1994) Skua and penguin: predator and prey. Cambridge University Press, Cambridge

    Google Scholar 

  • Young EC, Millar CD (1999) Skua (Catharacta sp.) foraging behaviour at the Cape Crozier Adélie penguin (Pysoscelis adeliae) colony, Ross Island, Antarctica, and implications for breeding. Notornis 46:287–297

    Google Scholar 

  • Zar J (1996) Biostatistical analysis, 4th edn. Prentice-Hall, New Jersey

    Google Scholar 

  • Zipan W, Norman FI (1993) Foods of the south polar skua Catharacta maccormichi in the eastern Larseman Hills, Princess Elizabeth Land. Polar Biol 13:255–262

    Article  Google Scholar 

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Acknowledgments

We want to express our gratitude to the logistic team of the Primavera Station for their cooperation during 1992–93 and 1995–96, to J. L. Agraz, A. Ripalta, O. Benítez, and V. Cirelli for field support, to G. Denari (MACN) and A.Volpedo (FCEyN, UBA) for their help in the analysis of otoliths, and to D. Echeverría, V. Villar, P.Saccone, and G. Rosa for laboratory support. A special thank to Silvia Pietrokovsky for the English translation and to the anonymous reviewers for constructive criticism. This work was supported by the Instituto Antártico Argentino and the University of Buenos Aires.

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  1. Laboratorio de Ecología Regional, Dpto. de Ecología, Genética y Evolución, FCEyN, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428, Buenos Aires, Argentina

    Silvina L. Malzof & Rubén D. Quintana

  2. National Scientific and Technical Council (CONICET), Buenos Aires, Argentina

    Rubén D. Quintana

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  1. Silvina L. Malzof
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Correspondence to Rubén D. Quintana.

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Malzof, S.L., Quintana, R.D. Diet of the south polar skua Catharacta maccormicki and the brown skua C. antarctica lonnbergi at Cierva Point, Antarctic Peninsula. Polar Biol 31, 827–835 (2008). https://doi.org/10.1007/s00300-008-0421-4

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