Diet of South Polar Skua Chicks in Two Areas of Sympatry with Brown Skua

Waterbirds ◽  
2011 ◽  
Vol 34 (4) ◽  
pp. 495-498 ◽  
Author(s):  
Maricel Graña Grilli ◽  
Marcela Libertelli ◽  
Diego Montalti
Keyword(s):  
Brown Skua ◽  
South Polar Skua ◽  
South Polar

scholarly journals Thelebolus microsporus Mycelial Mats in the Trachea of Wild Brown Skua (Catharacta antarctica lonnbergi) and South Polar Skua (C. maccormicki) Carcasses

2002 ◽  
Vol 38 (2) ◽  
pp. 443-447 ◽  
Author(s):  
Gerardo A. Leotta ◽  
Jean A. Paré ◽  
Lynne Sigler ◽  
Diego Montalti ◽  
Germán Vigo ◽  
...  
Keyword(s):  
Brown Skua ◽  
South Polar Skua ◽  
South Polar ◽  
Catharacta Antarctica

Skeletal morphoanatomy of the Brown Skua Stercorarius antarcticus lonnbergi and the South Polar Skua Stercorarius maccormicki

Polar Biology ◽  
2009 ◽  
Vol 32 (5) ◽  
pp. 759-774 ◽  
Author(s):  
Carolina Acosta Hospitaleche ◽  
Diego Montalti ◽  
Lucas José Marti
Keyword(s):  
The South ◽  
Brown Skua ◽  
South Polar Skua ◽  
South Polar

PELLETS AND PREY REMAINS AS INDICATORS OF THE DIET OF TWO SYMPATRIC SKUAS (AVES: STERCORARIIDAE) ON KING GEORGE ISLAND, ANTARCTICA

2021 ◽  
Vol 25 (03) ◽  
pp. 674-684
Author(s):  
Ana Olívia de Almeida Reis ◽  
◽  
Erli Schneider Costa ◽  
João Paulo Machado Torres ◽  
Maria Alice Santos Alves ◽  
...  
Keyword(s):  
Breeding Season ◽  
Marine Debris ◽  
King George Island ◽  
Brown Skua ◽  
Admiralty Bay ◽  
South Polar Skua ◽  
Food Items ◽  
Wide Range ◽  
Prey Remains ◽  
South Polar

South Polar skua (Stercorarius maccormicki) and Brown skua (Stercorarius antarcticus lonnbergi) have opportunistic feeding habits and are the dominant predators in terrestrial Polar regions. These skuas exploit a wide range of food items, including marine organisms, other birds, and even garbage. In the present study, we compare the diets of these two skua species during the breeding season, using pellets and prey remains collected within their territories. The samples were collected at six sites in Admiralty Bay, on King George Island, Antarctica. We identified eight different items, which we classified as “penguin”, “flying bird”, “skua”, “fish”, “gastropod”, “krill”, “egg” and “marine debris”. In the first breeding season (2008/2009), penguins and flying birds were the food resources more abundant for both skua species, and their diet composition was similar. In the second breeding season (2010/2011) South Polar skua exploited more fish and flying birds than Brown skua; the latter exploited more eggs and penguins. Our findings corroborate those of previous studies, demonstrating that in sympatry South Polar skua exploit more fish than Brown skua. The diet of South Polar skua also varied between breeding seasons, reflecting the opportunistic foraging behavior of these skuas. As in other studies, we recorded that skua is a food resource for both skua species, but it was more common in the diet of South Polar skua. Marine debris was recorded only in the samples of Brown skua. Birds are important food items for both skuas, although significant differences were found in the diets of these sympatric species, with shifts in the composition of the diet probably reflecting fluctuations in the abundance of prey populations, which are known to be common at Admiralty Bay, although more data will be needed to confirm this link.

scholarly journals Within and between breeding-season changes in contaminant occurrence and body condition in the Antarctic breeding South polar skua

2021 ◽  
pp. 117434
Author(s):  
Hilde Karin Midthaug ◽  
Daniel J. Hitchcock ◽  
Jan Ove Bustnes ◽  
Anuschka Polder ◽  
Sébastien Descamps ◽  
...  
Keyword(s):  
Breeding Season ◽  
Body Condition ◽  
South Polar Skua ◽  
The Antarctic ◽  
South Polar

Polychlorinated dibenzo-p-dioxins, dibenzofurans and polychlorinated biphenyls in polar bear, penguin and south polar skua

2002 ◽  
Vol 119 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Kurunthachalam Senthil Kumar ◽  
Kurunthachalam Kannan ◽  
Simonetta Corsolini ◽  
Thomas Evans ◽  
John P Giesy ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Polar Bear ◽  
South Polar Skua ◽  
South Polar

South Polar Skua breeding populations in the Ross Sea assessed from demonstrated relationship with Adélie Penguin numbers

Polar Biology ◽  
2016 ◽  
Vol 40 (3) ◽  
pp. 577-592 ◽  
Author(s):  
Deborah J. Wilson ◽  
Philip O’B. Lyver ◽  
Terry C. Greene ◽  
Amy L. Whitehead ◽  
Katie M. Dugger ◽  
...  
Keyword(s):  
Ross Sea ◽  
Adélie Penguin ◽  
Adelie Penguin ◽  
South Polar Skua ◽  
Breeding Populations ◽  
South Polar
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