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dc.contributor.author
Punta, Gabriel  
dc.contributor.author
Yorio, Pablo Martin  
dc.contributor.author
Herrera, Gonzalo  
dc.date.available
2020-04-23T18:26:01Z  
dc.date.issued
2003-09  
dc.identifier.citation
Punta, Gabriel; Yorio, Pablo Martin; Herrera, Gonzalo; Temporal patterns in the diet and food partitioning in Imperial Cormorants (Phalacrocorax atriceps) and Rock Shags (P. magellanicus) breeding at Bahía Bustamante, Argentina; Wilson Ornithological Society; Wilson Bulletin; 115; 3; 9-2003; 307-315  
dc.identifier.issn
0043-5643  
dc.identifier.uri
http://hdl.handle.net/11336/103486  
dc.description.abstract
We studied the diet of Imperial Cormorants (Phalacrocorax atriceps) and Rock Shags (P.magellanicus) at Bahý´a Bustamante, Argentina, between 1992 and 1994. We analyzed pellet casts (1887 from Imperial Cormorants and 799 from Rock Shags) and regurgitations of stomach contents (260 from Imperial Cormorants and 24 from Rock Shags). Imperial Cormorants and Rock Shags fed on at least 22 and 21 different types of prey, respectively. The main prey species during all study years were fish: Engraulis anchoita for Imperial Cormorants and Patagonothen sp. for Rock Shags. For both species, the consumption of the main food categories as estimated by pellet analysis was similar among years. A significant relationship was found between Imperial Cormorant and Rock Shag diets during the three years, while the diet overlap index was relatively high. During all years, Imperial Cormorants consumed a significantly larger proportion of pelagic or demersal fish than did Rock Shags, while Rock Shags consumed benthic fish in a greater proportion than did Imperial Cormorants. Mean maximum diving depth, determined using capillary tube depth gauges, of Imperial Cormorants (24.4 m 6 18.8 SD) was significantly greater but more variable than that of Rock Shags (9.3 m 6 4.1 SD).  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wilson Ornithological Society  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
IMPERIAL CORMORANTS  
dc.subject
ROCK SHAGS  
dc.subject
BAHÍA BUSTAMANTE  
dc.subject
ARGENTINA  
dc.subject
PELLET CAST  
dc.subject
REGURGITATIONS  
dc.subject.classification
Ecología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Temporal patterns in the diet and food partitioning in Imperial Cormorants (Phalacrocorax atriceps) and Rock Shags (P. magellanicus) breeding at Bahía Bustamante, Argentina  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-04-06T16:09:07Z  
dc.journal.volume
115  
dc.journal.number
3  
dc.journal.pagination
307-315  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Punta, Gabriel. Dirección General de Intereses Marítimos y Pesca Continental, Chubut; Argentina  
dc.description.fil
Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos  
dc.description.fil
Fil: Herrera, Gonzalo. Dirección General de Intereses Marítimos y Pesca Continental, Chubut; Argentina  
dc.journal.title
Wilson Bulletin  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/the-wilson-journal-of-ornithology/volume-115/issue-3/02-119/TEMPORAL-PATTERNS-IN-THE-DIET-AND-FOOD-PARTITIONING-IN-IMPERIAL/10.1676/02-119.short  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1676/02-119